Syntec 6515-01-556-9563 Vitreoretinal Surgical System Maint - VitMan Oxygen Blender Instruction Manual

©

Syntec VitMan

MAINTENANCE

MANUAL

Syntec, Inc.

733 Mansion Rd. Phone: [phone]
Winfield, Mo. 63389 Fax: [phone]

1000742D

Table of Contents

System Description........................................................................................... 2

Theory of Operation.......................................................................................... 3

System Interconnect Block Diagram .............................................................. 28

Connector Pinouts .......................................................................................... 29

Pneumatic Block Diagram .............................................................................. 31

Status Line Messages .................................................................................... 32

System Test Procedures................................................................................. 5 6

System Operation Check................................................................................ 57

System Trouble Shooting Chart...................................................................... 6 1

Trouble Shooting Steps .................................................................................. 66

System Adjustment Procedures ..................................................................... 97

Adjust Pressure Regulators............................................................................ 9 8

Adjust Vacuum Regulator ............................................................................... 99

Calibrate Aspiration ...................................................................................... 101

System Assembly/Disassembly Procedures................................................ 102

Light Source Lamp Replacement ................................................................. 103

System Fan Filter Maintenance.................................................................... 1 05

System Fuse Replacement .......................................................................... 106

System Cover Removal ................................................................................ 107

System Cover Installation............................................................................. 108

Hydrophobic Filter Replacement ................................................................... 110

Pneumatic Module Removal.......................................................................... 112

Pneumatic Module Installation ....................................................................... 116

Replace Vacuum Regulator.......................................................................... 122

Analog Electronics Removal ......................................................................... 123

Analog Electronics Installation ..................................................................... 125

Front Panel Removal .................................................................................... 129

Front Panel Installation................................................................................. 133

CPU Electronics Removal ............................................................................ 139

CPU Electronics Installation ......................................................................... 140

Back Panel Removal .................................................................................... 141

Back Panel Installation ................................................................................. 143

Ultrasound Electronics Removal .................................................................. 147

Ultrasound Electronics Installation ............................................................... 148

System Fan Removal ................................................................................... 149

System Fan Installation ................................................................................ 150

Software Procedures .................................................................................... 152

Load Syntec VitMan Software ...................................................................... 15 3

Save Syntec VitMan Status Information....................................................... 155

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Contents

System Description

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System Description

Theory of Operation

The Syntec VitMan is a complex microprocessor controlled, electromechanical system for
use in support of ophthalmic surgery. Operationally it can be broken down into surgical
functions or into subsystems that can be grouped together logically because of their func­tion in the system.

The surgical functions are as follows:
Vitrector drive
Aspiration
Irrigation
Illumination
Air exchange
Ultrasound

Operation of the system’s menus is required to access all of the features of the system.
The owner’s manual includes comprehensive information on the operation of the menus.
This document will refer to a specific series of menu selections separated by a back slash
(\). For example Values \ Current A/D Values signifies selecting Values from the Main
menu, then selecting Current A/D Values from the Values menu. When a reference is
made to a specific selection a complete listing of the menu selections will be given from the
main menu, even if a shorter route from the current screen could be taken in the menu
tree.
Vitrector - The vitrector surgical function provides a variable rate pressure pulse used to
drive a guillotine type vitrector.
The vitrector surgical function LED (located on the front panel of the system) will display
the current state of the vitrector surgical function. If the LED is dark, the vitrector surgical
function is off. If the LED is green, the vitrector surgical function is operating within accept­able limits. If the LED is red a problem exists which may effect the operation of the vitrec­tor surgical function. If the LED is red, the front panel display will show a status line mes­sage indicating the problem.
The vitrector surgical function will operate in one of two modes. The vitrector on/off button
is used to change the mode of the vitrector surgical function. Each time the vitrector on/off
button is pressed the mode will change. Starting with the vitrector surgical function off, if
the vitrector on/off button is pressed the vitrector surgical function will come on and enter
the posterior vitrectomy mode. If pressed again the vitrector surgical function will enter
anterior vitrectomy mode. The vitrector up and down buttons can be used to change the
vitrector cut rate setting. The vitrector cut rate setting has a range of five cuts-per-minute
to twelve hundred cuts-per-minute, or it can be placed in single cut mode. If the up or

The logically grouped subsystems are as follows:
Light source- see Illumination surgical function
Cassette housing assembly
System Pneumatics- Includes Pneumatic module
Floppy disk drive
LCD display
CPU electronics board
Analog electronics board
Ultrasound electronics board
Power supply
Speaker
System cooling
Foot pedal

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Theory of operation

System Description

down buttons are pressed and released, the vitrector cut rate setting will change by five
cuts-per-minute. If the up or down buttons are pressed and held, the vitrector cut rate
setting will continue to change (in five cuts-per-minute steps) until the end of the range is
reached or the button is released. If the vitrector cut rate setting is at the minimum setting,
and the down button is pressed, the vitrector surgical function will enter single cut mode.
While in single cut mode, if the up button is pressed, the cut rate will change to the mini­mum setting.
The foot pedal position is used to control when the vitrector cuts. A foot pedal side switch
(left or right) is selected by the user, to enable cutting functions (ultrasound or vitrector). By
specifying which switch is used to actuate reflux (Current Settings \ Aspiration Values),
the other switch is used to enable cutting functions. The default cut enable switch is the
right switch. Two modes are available for the cut enable switch, toggle or momentary
(Current Settings \ Vitrector Values). If the user selects the toggle mode, actuating the
switch will toggle the cut enable state. If cutting is enabled, it will be disabled. If cutting is
disabled, it will be enabled. If the user selects momentary mode, the switch needs to be
actuated to enable cutting. In addition to enabling cutting (using a side switch), the foot
pedal must be depressed before cutting begins. The user is allowed to specify the foot
pedal movement required before cutting begins (Current Settings \ Pedal Thresholds).
When the foot pedal is depressed far enough that the vitrector threshold is reached, the
vitrector will cut.
Several subsystems are involved in performing the vitrector surgical function (refer to figure

1). The foot pedal is the main tool available to the surgeon for control of how the system
operates the vitrector. Refer to the foot pedal subsystem for details about how it operates.
The foot pedal connects to the system back panel via an integral cable. A connector at the
back panel makes the transition from the external cable to an internal cable.

External Foot Pedal

Foot Pedal

System Front Panel

Output Tubing

Pneumatic Module

Signal Cable

Theory of operation

Drive
Tubing

Analog-Pneumatics

Control Cable

System Pressure
Sensor Tubing

System Back Panel

Internal Foot Pedal
Signal Cable

Foot Pedal Isolation
Electronics Board

CPU Electronics Board

CPU-Analog Board
Signal Cable

Analog Electronics Board

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Figure 1.
Block diagram of subsystems
used for the vitrector drive
surgical function.

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The internal cable terminates at a connector on the foot pedal isolation electronics board.
The board optically isolates the foot pedal signals and passes them through a board to
board connector to the CPU electronics board. The microprocessor on the CPU electronics
board analyzes inputs from the foot pedal to determine what action to take. If the system
pressure is OK and the foot pedal position is correct as defined in the system settings, then
it will send a signal to the analog electronics board to activate the vitrector. A signal cable
connects the CPU electronics board to the analog electronics board. Addresses and data
are passed on this cable. The analog board decodes the command to operate the vitrector
and applies ground to the appropriate pin on the analog-pneumatics cable. This cable
constantly provides 12Vdc to the vitrector valve, which is turned on when the return wire is
grounded. The vitrector valve is located in the pneumatic module. A tube connects the air
output from the vitrector valve to the system front panel. A tube connects the main system
air pressure from the pneumatic module to a sensor on the analog electronics board. The
analog electronics board communicates the system pressure back to the microprocessor
through the CPU-analog signal cable. The system monitors the system air pressure only. It
can’t determine if the vitrector valve is actually operating. Nor does it measure the pressure
pulses sent from the vitrector valve.
Aspiration - The aspiration surgical function is used to provide vacuum to the connected
surgical instrument.
The aspiration surgical function LED will display the current state of the aspiration surgical
function. If the LED is dark, the aspiration surgical function is off. If the LED is green, the
aspiration surgical function is operating within acceptable limits. If the LED is red a prob­lem exists which may effect the operation of the aspiration surgical function. If the LED is
red, the front panel display will show a status line message indicating the problem.
The aspiration on/off button is used to change the state of the aspiration surgical function.
The effect on the aspiration surgical function is dependent upon the state of other surgical
functions as detailed below. With either the vitrector or ultrasound surgical functions on, if
the aspiration surgical function is on and the aspiration on/off button is pressed, the aspira­tion function will be turned off. If the aspiration surgical function is off and the aspiration
on/off button is pressed, the aspiration function will be turned on. The aspiration mode
used (anterior or posterior) is the mode selected by either the vitrector or ultrasound surgi­cal function (whichever is active). With both the vitrector and ultrasound surgical functions
off; the aspiration on/off button is used to place the aspiration surgical function in one of
three states. Starting with the aspiration surgical function off, when the aspiration on/off
button is pressed the aspiration surgical function will come on and enter posterior mode. If
the aspiration on/off button is pressed again the aspiration surgical function will enter ante­rior mode. If pressed again the aspiration surgical function will be turned off.
Two types of vacuum control are provided, fixed and linear. While in fixed aspiration, the
user can select the desired vacuum level using the aspiration up and down buttons. The
foot pedal position is monitored and when the activity threshold is reached, the aspiration
valve will open and selected vacuum level is applied to the surgical instrument. The activity
threshold can be specified by the user (Current Settings \ Pedal Thresholds). In linear
aspiration, the vacuum applied to the surgical instrument is proportional to the posi

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Theory of operation

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tion of the foot pedal. When the activity threshold is reached, the aspiration pinch valve will
open, but initially, no vacuum is applied. As the foot pedal is further depressed, the
vacuum level will increase linearly, until the maximum vacuum setting is reached when the
foot pedal is fully depressed. Reflux is used to apply a small positive pressure to the aspira­tion tubing. This small pressure is used to release any tissue trapped at the end of the
surgical instrument. With the foot pedal up, the surgeon can activate the reflux function
using a foot pedal side switch. Either the left or right side foot pedal switch can be selected
for reflux function activation (Current Settings \ Aspiration Values).
The aspiration up and down buttons can be used to change the maximum vacuum setting.
The up button will increase the maximum vacuum setting and the down button will de­crease the maximum setting. The maximum vacuum setting has a range from zero mmHg
to five hundred mmHg. If the up or down buttons are pressed and released, the maximum
vacuum setting will change by five mmHg. If the up or down buttons are pressed and held,
the maximum vacuum setting will continue to change (in five mmHg steps) until the end of
the range is reached or the button released. While the aspiration surgical function is off,
the aspiration up and down buttons will have no effect, unless a prime is in progress.
The aspiration valve open/close button can be used to open and close the aspiration pinch
valve and, when pressed and held, can be used to initiate a prime cycle. If the foot pedal is
not active, when the aspiration valve open/close button is pressed and released, the aspi­ration valve will change state. If the valve is open, it will close. If the valve is closed, it will
open. If the aspiration valve is opened, using the aspiration valve open/close button, it will
close after thirty seconds or if any foot pedal activity is sensed..
If the aspiration open/close button is pressed and held for one second, a prime cycle will
start. A prime cycle will apply the specified vacuum level (Current Settings \ Prime Pa-

rameters) to the 50cc chamber of the aspiration cassette, for the duration specified (Cur­rent Settings \ Prime Parameters). One of two prime methods can be selected ( Current
Settings \ Prime Parameters \ Prime Mode Select). In timed prime mode, the duration of

the prime cycle is determined by the prime cycle duration for the selected surgical function.
In continuous prime mode, once started the prime cycle will stop when the aspiration valve
button is pressed, foot pedal activity is detected or the cassette over fills. The normal
method to terminate a continuous prime cycle is to press the aspiration valve button.
The aspiration cassette (refer to figure 2) is the connection between the aspiration tubing
and the vacuum system. It also provides for aspirant storage. A dual chamber design is
used. The larger 500cc chamber is used to store vacuum and aspirant. The smaller 50cc
chamber is connected to aspiration tubing that communicates the vacuum to the surgical
instrument. It’s relatively small volume allows for high speed control of it’s vacuum level. A
float valve controls the opening of a channel connecting the two chambers. During use,
approximately 25cc of fluid is allowed to enter the smaller chamber. Any additional fluid
entering the smaller chamber causes the float valve to transfer an equivalent amount into
the larger chamber. Two prisms are used to allow the system to sense the fluid level in
each chamber. A third prism is used to reflect visible light towards the front of the cassette.

Theory of operation

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Valve float

Output
connection

Valve

System Description

Vacuum connections

50cc chamber

500cc chamber

Level sense prisms

Illumination
prism

Figure 2.
Aspiration Cassette

External Foot Pedal
Signal Cable

V acuum Tubing

Vacuum Sense Tubing

Analog-Pneumatics
Control Cable

System Back Panel

Internal Foot Pedal
Signal Cable

Foot Pedal Isolation
Electronics Board

CPU Electronics Board

Analog Electronics Board

Aspiration
Tubing

Manifold

Cassette

Pinch V alves

System Front Panel

Foot Pedal

Hydrophobic
Filters

Pneumatic Module

Pinch V alve
Control Tubing

Figure 3.
Block diagram of subsystems used for the aspiration surgical function.

CPU-Analog Board
Signal Cable

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Theory of operation

System Description

Various subsystems are used to perform the aspiration surgical function (refer to figure 3).
The foot pedal is the primary method for controlling how the system applies vacuum. Refer
to the foot pedal subsystem for details about how it operates. The foot pedal is connected
to the system back panel with a cable that is permanently connected to the foot pedal. A
connector at the back panel makes the transition from the external cable to an internal
cable. The internal cable terminates at a connector on the foot pedal isolation electronics
board. The board optically isolates the foot pedal signals and passes them through a board
to board connector to the CPU electronics board. The microprocessor on the CPU electron­ics board analyzes inputs from the foot pedal to determine what action to take. If the foot
pedal position is correct as defined in the system settings, then it will send a signal to the
analog electronics board to either deliver a vacuum, change the aspiration pinch valve
state, or change the reflux valve state. A signal cable connects the CPU electronics board
to the analog electronics board. Addresses and data are passed on this cable. The analog
board decodes the commands from the CPU electronics board. If the command is to acti­vate one of the pinch valves (aspiration pinch valve or reflux pinch valve) then the analog
electronics board applies ground to the appropriate pin on the analog-pneumatics cable.
This cable constantly provides 12Vdc to the valves (in the pneumatic module) that control
the pinch valves. The valves turn on when their return wire is grounded. Tubing connects
the control valves in the pneumatic module to the pinch valves on the system front panel. If
the command is to change the vacuum level of the smaller chamber of the cassette then
the gain on a multiplying D/A converter is set and the analog signal from the foot pedal is
passed through the analog-pneumatics cable to a vacuum regulator in the pneumatic
module. The vacuum regulator in the pneumatic module is a closed loop V to P convertor.
It takes vacuum from the larger chamber of the cassette and uses it to control the level of
vacuum in the smaller chamber of the cassette. Tubing connects the cassette to the pneu­matic module. The tubing includes two hydrophobic air filters to protect the system from
fluid ingress. The cassette manifold provides the connection between the tubing and the
cassette. Additionally the cassette manifold is connected to pressure sensors on the ana­log electronics board with two tubes. The sensors monitor the vacuum level of both cham­bers in the cassette. The analog electronics board communicates the chamber vacuums
back to the microprocessor through the CPU-analog signal cable. The system monitors the
vacuum level in the 50cc chamber and makes command adjustments as necessary to
maintain the vacuum level requested by the foot pedal. The system monitors the 500cc
chamber vacuum level and will give an error if the vacuum level measures too low.
Irrigation - The irrigation pinch valve is used to control irrigation fluid flow. While in any
anterior mode, the irrigation pinch valve will open just prior to the application of aspiration
vacuum and close just after vacuum is removed. The foot pedal position is used to control
when the pinch valve opens. The user is allowed to specify the foot pedal movement re­quired before the pinch valve opens (Current Settings \ Pedal Thresholds). While in
posterior modes, the irrigation pinch valve will open (if closed) just prior to the application of
aspiration vacuum and will remain open, until closed using the irrigation valve button (or by
entering anterior mode). The irrigation pinch valve is to be used only in anterior modes,
however, if used in posterior modes the valve will open and remain open.

Theory of operation

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The irrigation surgical function requires multiple subsystems to operate (refer to figure 4).
The foot pedal is the main means available for control of how the system operates the
irrigation pinch valve. Refer to the foot pedal subsystem for details about how it operates.
The foot pedal connects to the system back panel with a cable integral with the pedal. A
connector at the back panel makes the transition from the external cable to an internal
cable. The internal cable terminates at a connector on the foot pedal isolation electronics
board. The board optically isolates the foot pedal signals and passes them through a board
to board connector to the CPU electronics board. The microprocessor on the CPU electron­ics board analyzes inputs from the foot pedal to determine what action to take. If the foot
pedal position is correct as defined in the system settings, then it will send a signal to the
analog electronics board to activate the pinch valve. A signal cable connects the CPU
electronics board to the analog electronics board. Addresses and data are passed on this
cable. The analog board decodes the command to operate the pinch valve and applies

External Foot Pedal
Signal Cable

System Back Panel

Internal Foot Pedal
Signal Cable

Foot Pedal Isolation
Electronics Board

CPU Electronics Board

Figure 4.
Block diagram of subsystems
used for the irrigation surgical
function.

Foot Pedal

Pinch V alve

System Front Panel

Pinch V alve
Control Tubing

Pneumatic Module

Analog Electronics Board

Analog-Pneumatics
Control Cable

CPU-Analog Board
Signal Cable

ground to the appropriate pin on the analog-pneumatics cable. This cable constantly pro­vides 12Vdc to the valve (in the pneumatic module) that controls the pinch valve. The valve
is turned on when it’s return wire is grounded. Tubing connects the control valve in the
pneumatic module to the pinch valve on the system front panel.
Illumination - The illumination surgical function is used to provide illumination for surgery
through fiber optic instruments. Three fiber optic connection ports are provided. All three
ports are illuminated using the same bulb. Two bulbs are available, the primary bulb and a
back up bulb. The system monitors the condition of both bulbs and switches to the back
up bulb when required. The system warms each bulb prior to turning it on. The user
changes the intensity of the light output by adjusting the dimming knob on the light source

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Theory of operation

System Description

tray. The illumination on/off button can be used to turn on and off the illumination surgical
function. When the illumination surgical function is turned on, the system will warm the
bulb, then turn the bulb full on.
The system uses several subsystems to support the illumination surgical function (see
figure 5). The microprocessor on the CPU electronics board analyzes inputs from the front
panel controls and the current bulb status (good or bad) to determine what action to take.
When a request to turn on a bulb is made, a series of commands is sent to the analog
electronics board through the CPU-Analog board signal cable. The analog board decodes
the commands. If the command is to move the bulb position (move a backup bulb into
position) then it applies ground to the appropriate pins (2) on the analog-pneumatics cable.
This cable constantly provides 12Vdc to the valves (in the pneumatic module) that control
the backup mechanism in the light source. The valves are turned on when their return wires
are grounded. Tubing connects the valves in the pneumatic module to the backup mecha­nism in the light source. The backup mechanism moves to the “A” position when the valves
are off and the “B” position when the valves are on. If the command is to warm a bulb then
ground is applied to the appropriate pin on the appropriate analog-bulb cable. Each bulb
has it’s own power resistor, which is connected in series with the bulb to warm it prior to
applying full current. The power resistors are mounted to the air duct. If the command is to
turn on a bulb then ground is applied to the appropriate pin on the appropriate analog-bulb
cable (different pin than the warm pin). The analog-bulb cables constantly provide 24Vdc to
the bulbs. The bulb is turned on when it’s return wire is grounded. The majority of the light
source components are mounted on the light source tray. This allows the light source to be
opened for bulb replacement. The two analog-bulb cables terminate in a drawer style
connector inside the light source enclosure. The connection is broken whenever the light
source tray is opened.
The light source output connector (see figure 6) contains an integral dimming disk and the

CPU Electronics Board

CPU-Analog Board
Signal Cable

Pneumatic Module

Backup Control Tubing

Light Source

Analog-Pneumatics

Control Cable

Analog Electronics Board

Light Source
Fan Cable

Analog-Bulb Cables

Figure 5.
Block diagram of subsystems
used for the illumination
surgical function.

mechanism for retaining the fiber optic connectors. The light source dimming mechanism is
controlled by the dimming knob located on the front of the light source tray. Rotating the
dimming knob will change the position of the dimming disk relative to the ends of the fiber
optic cables and change the amount of light allowed to enter the fiber optic cable.

Theory of operation

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Guide bushings

Figure 6.
Illustration of light source connector

Fiber optic illuminator

Dimming disk

Connector catches

The light source enclosure has a fan to cool the light source optics (refer to figure 7). The
light source fan pulls air from the inside of the system and forces it past the light source
optics and out the air duct. The light source fan will run when the system power is on.
Power for the light source fan is provided by the light source fan cable connected to the
analog electronics board.

Figure 7.
Light source enclosure,
bottom back

Bulb warming power
resistors

Light source

System speaker

fan

Analog-bulb cables

The light source tray contains the optics used to focus the light from the illuminated bulb to
the ends of the fiber optic cables (refer to figure 8). Light passes through a collimating lens
onto a hot mirror. The visible light which passes through the hot mirror then passes through
a focusing lens onto the ends of the fiber optic cables. A spherical mirror reflects light from
behind the bulb towards the front.

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Theory of operation

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The light source drawer is held in the light source enclosure by the light source lock knob
(refer to figure 9). When the lock knob is in the unlocked position, the light source drawer
may be slid to the open position. The light source drawer stop cable (see figure 8) prevents
the light source drawer from being removed from the system.

Figure 8.

Drawer connector

Spherical mirror

Opened light source tray

Output connector

Dimming knob

Lock knob

Lens

Hot mirror

Stop cable

Backup mechanism

Figure 9
Light source tray bottom

Theory of operation

Tubing connectors

Drawer connector

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System Description

Air Exchange - The air exchange surgical function is used to provide a variable flow con­stant pressure source of air.
The air exchange surgical function LED will display the current state of the air exchange
surgical function. If the LED is dark, the air exchange surgical function is off. If the LED is
green, the air exchange surgical function is operating within acceptable limits. If the LED is
red a problem exists which may effect the operation of the air exchange surgical function. If
the LED is red, the front panel display will show a status line message indicating the prob­lem.
The air exchange on/off button can be used to turn on and off the air exchange surgical
function. The air exchange up and down buttons can be used to change the user specified
pressure setting. The up button will increase the pressure setting and the down button will
decrease the pressure setting. The user specified pressure setting has a range from one
mmHg to one hundred mmHg. If the up or down buttons are pressed and released, the
user specified pressure setting will change by one mmHg. If the up or down buttons are
pressed and held, the user specified pressure setting will continue to change (in one mmHg
steps) until the end of the range is reached or the button is released. While the air ex­change surgical function is off, the air exchange up and down buttons will change the user
specified pressure setting.
The system uses several subsystems to support the air exchange surgical function (see
figure 10). The microprocessor on the CPU electronics board analyzes inputs from the front
panel controls and the current function status to determine what action to take. When the
air exchange surgical function is turned on, the current output port pressure is used as the
desired low pressure compressor pressure set point. A command is sent to the analog
electronics board through the CPU-Analog board signal cable to enable the low pressure
compressor. The analog board decodes the commands. It applies ground to the appropri­ate pin on the analog-pneumatics cable, enabling the low pressure compressor. It also sets
the desired pressure point for the low pressure compressor control circuit which supplies a
positive drive voltage to the appropriate pin on the analog-pneumatics cable. This cable
connects to the low pressure compressor on the pneumatic module. A tube connects the
output of the low pressure compressor to the system front panel (after it passes through a
valve). Two pressure sense tubes (one for measuring pressure at the air exchange output,
called “eye”, and another for measuring the compressor output pressure, called “pump”)

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Figure 10
Block diagram of systems used for Air Exchange surgical function.

VitMan

System Front Panel

Output T ubing

Pneumatic Module

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Analog-Pneumatics

Control Cable

"Eye" pressure sensor tubing

"Pump" pressure sensor tubing

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CPU Electronics Board

CPU-Analog Board
Signal Cable

Analog Electronics Board

Theory of operation

System Description

connect to sensors on the analog electronics board. The low pressure compressor control
circuit on the analog electronics board uses the pump sensor output as feedback to vary
the low pressure compressor drive voltage. The output of the pressure sensors is commu­nicated back to the CPU electronics board through the CPU-analog board signal cable.
When the current compressor pressure is less than ten mmHg above the initial output port
pressure, the microprocessor will send a command for the air exchange valve to open. It
will also send a command to change the desired low pressure compressor pressure set
point to the user specified air exchange pressure setting. The analog board decodes the
commands. It applies ground to the appropriate pin on the analog-pneumatics cable that
connects to the air exchange valve in the pneumatic module. This cable constantly pro­vides 12Vdc to the air exchange valve, which is turned on when the return wire is
grounded. When the valve is on, output from the low pressure compressor is connected to
the air exchange output on the system front panel. When the valve is off, the output from
the low pressure compressor is disconnected and the air exchange output on the system
front panel is blocked. Once the air exchange valve is open, if the eye sensor pressure
exceeds the user specified value by fifteen mmHg, the microprocessor will command the
air exchange valve to close until the pressure is reduced. If the eye sensor pressure is not
within five mmHg of the user specified air exchange pressure setting, the air exchange
surgical function will be in alarm (system beeps, LED goes red, and a status line message
appears).
The low pressure compressor control circuit monitors the pump pressure sensor. If exces­sive pressure is detected by the control circuit, it will disable the low pressure compressor.
This event is communicated to the microprocessor through the CPU-analog board signal
cable. If excessive pressure is reported to the microprocessor, the air exchange valve will
be commanded to close. If the excessive pressure condition is removed, the microproces­sor will enable the low pressure compressor control circuit. When appropriate the air ex­change valve will be opened. Note that this excess pressure control method is separate
from the normal, software dependent, method. This method is built into the control circuit
and cannot be disabled by the system software.
Ultrasound - The ultrasound surgical function is used to apply energy to an attached
ultrasound handpiece. The energy can be delivered in either continuous or pulse mode.
The relative power and pulse rate are specified by the user.
The ultrasound surgical function LED will display the current state of the ultrasound surgical
function. If the LED is dark, the ultrasound surgical function is off. If the LED is green, the
ultrasound surgical function is operating within acceptable limits. If the LED is red a prob­lem exists which may effect the operation of the ultrasound surgical function. If the LED is
red, the front panel display will show a status line message indicating the problem.
The ultrasound surgical function will operate in one of four modes. The ultrasound on/off
button is used to change the mode of the ultrasound surgical function. Each time the ultra­sound on/off button is pressed the ultrasound mode will change. Starting with the ultra­sound surgical function off, if the ultrasound on/off button is pressed the ultrasound surgical
function will come on and enter posterior fragmentation mode. If pressed again the ultra­sound surgical function will enter anterior linear phaco. mode. If pressed again the

Theory of operation

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ultrasound surgical function will enter anterior fixed phaco mode. If pressed again the
ultrasound surgical function will enter anterior fragmentation mode. If pressed again the
ultrasound surgical function will be turned off. When the ultrasound surgical function enters
a new mode, the aspiration surgical function is turned on, the aspiration mode (anterior or
posterior, linear or fixed) is set to be compatible with the ultrasound mode.
The ultrasound up and down buttons can be used to change the ultrasound power setting.
While in fixed power modes the setting will select the power level delivered to the hand
piece, when energized. In linear power mode, the setting will select the power level
reached upon fully depressing the foot pedal. If the ultrasound surgical function is on, the
up button will increase the ultrasound power setting and the down button will decrease the
ultrasound power setting. The ultrasound power setting has a range from one percent to
one hundred percent. If the up or down buttons are pressed and released, the ultrasound
power setting will change by one percent. If the up or down buttons are pressed and held,
the ultrasound power setting will continue to change until the end of the range is reached or
the button released. While the ultrasound surgical function is off, the ultrasound up and
down buttons will have no effect.
The pulse button is used to change the state of the ultrasound pulse mode. This is a toggle
operation and requires that the ultrasound surgical function be on. If pulse mode is off and
the pulse button is pressed, pulse mode will be turned on. If pulse mode is on and the
pulse button is pressed, pulse mode will be turned off. While the ultrasound surgical func­tion is off, the pulse button will have no effect.
The pulse up and down buttons can be used to change the pulse rate setting. If the ultra­sound surgical function is on and pulse mode is on, the up button will increase the pulse
rate setting and the down button will decrease the pulse rate setting. The pulse rate setting
has a range from one pulse-per-second to twenty pulses-per-second. If the up or down
buttons are pressed and released, the pulse rate setting will change by one pulse-per­second. If the up or down buttons are pressed and held, the pulse rate setting will continue
to change until the end of the range is reached or the button released. While pulse mode
is off, the pulse up and down buttons will have no effect.
Older versions of the ultrasound electronics require that the electronics be tuned in order to
transfer maximum power to the needle. New versions of the ultrasound electronics con­stantly tune, so maximum power is delivered to the handpiece at all times. A tune cycle
scans the entire range of frequencies looking for maximum power. The frequency of maxi­mum power is the resonant frequency of the hand piece. The tune button will initiate a tune
cycle. If the ultrasound hand piece is removed from the front panel, then reconnected, a
tune cycle will be required before the hand piece can be used. While the ultrasound surgi­cal function is off, the tune button will have no effect.
The foot pedal position is used to control when the energy is delivered to the ultrasound
hand piece. A foot pedal side switch (left or right) is selected by the user, to enable cutting
functions (ultrasound or vitrector). By specifying which switch is used to actuate reflux
(Current Settings \ Aspiration Values), the other switch is used to enable cutting func­tions. The default cut enable switch is the right switch. For ultrasound, the side switch is

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Theory of operation

System Description

only used in anterior frag. and posterior frag. modes. Two modes are available for the cut
enable switch, toggle or momentary (Current Settings \ Ultrasound Values). If the user
selects the toggle mode, actuating the switch will toggle the cut enable state. If cutting is
enabled, it will be disabled. If cutting is disabled, it will be enabled. If the user selects
momentary mode, the switch needs to be actuated to enable cutting. In all ultrasound
modes, the foot pedal must be depressed before energy is delivered to the ultrasound
hand piece. The user is allowed to specify the foot pedal movement required before cutting
begins (Current Settings \ Pedal Thresholds). When the foot pedal is depressed far
enough that the ultrasound threshold is reached, power will be delivered to the handpiece.
When energy is being delivered to the ultrasound hand piece, a tone is be generated. This
will provide audible feedback when energy is being delivered to the hand piece.
Several subsystems are involved in performing the ultrasound surgical function (refer to
figure 11). The foot pedal is the main tool available to the surgeon for control of how the
system delivers ultrasound power. Refer to the foot pedal subsystem for details about how
it operates. The foot pedal connects to the system back panel via an integral cable. A
connector at the back panel makes the transition from the external cable to an internal
cable. The internal cable terminates at a connector on the foot pedal isolation electronics
board. The board optically isolates the foot pedal signals and passes them through a board
to board connector to the CPU electronics board. The microprocessor on the CPU electron­ics board analyzes inputs from the foot pedal to determine what action to take. If the aspi­ration surgical function is OK, the ultrasound handpiece is present, and the foot pedal
position is correct as defined in the system settings, then it will send a signal to the analog
electronics board to set the ultrasound power and activate power output. The CPU-analog
signal cable connects the CPU electronics board to the analog electronics board. Ad

Figure 11.
Block diagram of subsystems used for the ultrasound surgical function.

Chassis Ground

Theory of operation

External Foot Pedal

Foot Pedal

System Front Panel

Ultrasound Output Cable

Ultrasound Electronics Board

Signal Cable

Handpiece Present

Analog-Ultrasound Control Cable

page 16

System Back Panel

Internal Foot Pedal
Signal Cable

Foot Pedal Isolation
Electronics Board

CPU Electronics Board

CPU-Analog Board
Signal Cable

Analog Electronics Board

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System Description

dresses and data are passed on this cable. The analog board decodes the command to operate ultrasound and applies +5Vdc to the appropriate pin on the analog-ultrasound control cable. It also sets the desired power level by applying a 0.5-5Vdc signal to the appropriate pin on the analog-ultrasound control cable. The ultrasound electronics board receives the command and outputs power to the ultrasound output cable. This cable con­nects to the ultrasound output connector on the system front panel. The ultrasound hand­piece connects to the front panel connector. The ultrasound handpiece has a multiple crystal piezoelectric motor. A single conductor supplies drive voltage to the motor. The return path is comprised of multiple conductors and is tied to chassis ground at the front panel. The ultrasound electronics board monitors the ground path for the handpiece. If it senses a loss of ground, it applies 5Vdc to the appropriate pin of the analog-ultrasound control cable. The analog electronics board communicates this to the CPU electronics board over the CPU-analog signal cable. The microprocessor inhibits ultrasound power output and the surgical function LED goes red. An additional connection for the ultrasound output cable connects from the ultrasound output connector on the system front panel to the CPU electronics board. It provides the handpiece present signal to the microprocessor. The microprocessor inhibits ultrasound power output and the surgical function LED will go red if the handpiece isn’t connected when the surgical function is on. Cassette Housing Assembly- Physical alignment of the various components that support the cassette is provided by the cassette housing assembly (refer to figures 12 and 13). Located on the bottom front of the housing is the lock knob. It is used to align the cassette front to back in the housing and to compress the top ports of the cassette to the seals in the cassette manifold. This is accomplished through a 270 degree rotation of the lock knob. Stops are provided at both extremes of knob rotation. The cassette manifold is

Figure 12.
Cassette housing

Vacuum connections

Figure 13.
View of cassette manifold seals

Cassette manifold

Sensors

Seals

Analog electronics
board

Lock knob

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Theory of operation

System Description

located towards the top front of the housing. It provides connections to the cassette, vacuum tubing, and sensors. The seals to the cassette are accomplished through O-rings mounted under the manifold. Both the manifold and the lock knob bracket are connected to the front panel providing it mechanical support. The left wall of the housing is used to mount the housing to the right side of the light source enclosure. It also contains a leaf spring that is used to hold the cassette against the right side of the housing. The rear wall also contains springs. They are used to eject the cassette after it is released by the lock knob. The right side of the housing holds the analog electronics board. The side has holes which allow LED’s and optical sensors access to the side of the cassette. A series of opti­cal sensors on the analog electronics board to monitor the prisms on the side of the cas­sette. Fluid in the cassette causes light to not be reflected back by the prism in the cas­sette. This allows the system to measure the amount of fluid in the cassette. It also allows the system to sense when a cassette is installed into the system. The front cross rail of the system mounts to the right side of the housing. System Pneumatics - The VitMan air system affects every surgical function of the system. The Pneumatic Module is designed to be removed from the system as a unit for mainte­nance or replacement. It contains every the pneumatic component in the system that doesn’t need to be elsewhere because of it’s function. Refer to figure 14 for a schematic of the system pneumatics and figures 15 and 16 for a picture of the pneumatic module. Pneu­matic components that are not mounted on the pneumatic module are drawn with a red outline. The various pressure sensors are all mounted on the analog electronics board. They contain the same references on the schematic as is used on the board. The three pinch valves and two function outputs (vitrector and air exchange) are mounted on the system front panel. The air cylinder is part of the light source backup mechanism. The cassette manifold is part of the cassette housing assembly, and is the connection to the aspiration cassette for vacuum control. The two filters are located to the rear of the cas­sette housing assembly. The pressure and vacuum input connections are mounted on the system back panel. The tubing that connects the different components is shown color coded for the size and type of tubing used. The schematic is a physical connection style schematic, the connections on the components are positioned similar to the physical con­nections used in the system. The bubble encapsulated numbers represent various fittings used to accomplish connections. Of special note is bubble 6. They are the quick discon­nects that must be disconnected to remove the pneumatic module. Beside them is the reference used to mark the tubes for easy reassembly. If a marker is missing or illegible, refer to these references to aid assembly. The pneumatic module contains seven valves, low pressure compressor, and the vacuum regulator that all require electrical control signals. The signals are provided by the analog­pneumatics control cable connected to the analog electronics board. Six of the valves (all except the vitrector valve) have wire connectors at the valve and an LED to indicate when the valve is on. The vitrector valve has permanently connected wiring and no indication of when it is on. All seven valves can be manually activated by pressing the button on their sides. The low pressure compressor has permanently connected wiring. The vacuum regulator wiring is connected to screw tightened terminals under the cover of the regulator. The cover can be removed by removing the two screws securing the cover to the regulator

Theory of operation

page 18

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System Description

Light Source Backup

16

Air Cylinder

16

8

Low Pressure

Compressor

P

V

11

25mm 0.3 micron GMF

Filter

Intake

Accumulator

4

12

12

2-Way Normally Closed

8
P

Air Ex

A
8

12

6

Air Exchange Out

7 on for A bulb

0 on for B bulb

"0"

6

Ref. Pinch Valve

8

Irr. Pinch Valve

8

Asp. Pinch Valve

6

"3"

"2"

6

"9"

"7"

6

"6"

6

"5"

6

"1"

6

0.005 Orifice

5

5

Pilot

4

"Pump"

Sensor

X103

0.005 Orifice

Sensor

X102

"Eye"

0.005 Orifice

8

8

8

8

A

8

8

P

1

Out Vac

1

Bleed

8

7

8

8

8

8

15

Vacuum

Regulator

E

9

3-way Normally Open

Light Y

A

E
8

Ref.

Pinch

3-way Normally Closed

Irr.

Pinch

8

Asp.

Pinch

8

Light X

8

60mm

1 micron

Filter

9

9

10

10

Cassette

Manifold

Exhaust

Air flow

Intake

Exhaust

Intake

Air flow

Air Input

Connector

Filter

50mm

1 micron

5

12

0.005 Orifice

Bleed

Open

4

Relief

Valve

13

13

Vacuum

Pump

Red

White

17

"500CC"

Sensor

X101

5

"50CC"

1/8 O.D Tube

1/4 O.D. Tube

3/16 O.D. Tube

1/4 O.D. Silicone Tube

5/32 O.D. Silicone Tube

2
Filter

17

2

5

4

Cylinder

Regulator

13

3

Manifold

4

3

2

3

Vitrector

Regulator

2

13

Vac Input
Connector

Sensor

X100

14

15

16

17

10-32 to 1/8 Barb (Large)

1/4 Quick Disconnect "T"

10-32 to 1/8 Quick Disconnect

1/4 NPT Plug

6

13

13

Vac. Reg.

Regulator

3

4

13

10

11

12

13

1/8 NPT to 1/8 Quick Disconnect

1/8 NPT to 3/16 Barb

1/8 Barb "T"

1/8 NPT Plug

Main Compressor

B

14

1

A

"4"

13

7

P
A

15

"8"

6

7

8

9
1/8 NPT to 1/4 Quick Disconnect

10-32 to 1/4 Barb

10-32 to 1/8 Barb

C

D
1

Sensor

X104

"Drive"

3-way Normally Closed

15

15

PE

E

Vit

Vitrector Out

1

234

5

6

1/8 Union Quick Disconnect

1/8 NPT to 1/4 Barb

1/8 NPT to 1/8 Barb

1/8 Barb to 3/16 Barb

1/8 NPT Nipple

1/4 NPT to 1/4 Barb "L"

Figure 14.
Schematic of system Pneumatics

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Theory of operation

System Description

body. Power for the main compressor and vacuum pump are provided by the analog­pneumatics power cable. Both sets of wires are permanently attached to the compressor and pump. System Pressure- The VitMan requires air pressure to operate. Two methods of providing pressure are provided. A connection for an external air pressure supply is accessible on the system back panel. The system will error if the system pressure is below 42psi. The system will vent any pressure above 50psi. Any external air supply should maintain be­tween these two pressures. It should also be clean, dry, and oil vapor free. An internal pressure compressor is contained in the pneumatic module. The compressor will maintain the appropriate pressure under all normal operating conditions. The intake of the compres­sor is connected to a length of tubing, which acts as a muffler. The output of the compres­sor is connected via a “T” to a coalescing air filter. The other leg of the “T” is connected to the external air input connector. The external air input connector has a built in shut-off valve that is opened when a hose is connected to it on the outside of the system. This is of inter­est if the system is relying on it’s internal compressor and a hose is connected to the exter­nal air input connector. If the hose isn’t shut off at the distal end or if it is connected to something that represents too great of a load, then the internal compressor will be unable to provide the necessary air to the system. The valves in the compressor do not put an additional load on the external air supply. The coalescing air filter will remove any water from the air, but will not remove water vapor. Water collected is plumbed to a spot where it will not do harm. It is normal for the system in humid environments to “make” water as it operates. Water that collects as a result of decompressing the air will eventually go to one of the exhausts and evaporate. If the vitrector is operated without connecting to the output port a small amount of water may spit from the port. This is normal. The output of the coalescing air filter is connected to system pressure manifold. The manifold distributes the air to various regulators that supply the rest of the air system. Also connected to the mani­fold are the system pressure sensor (X104) and the pressure relief valve. The system pressure sensor measures the current operating pressure of the system. This measure­ment is used to ensure that the system doesn’t try to operate certain functions if the supply pressure is too low i.e. vitrector. The pressure relief valve will vent any pressure above 50 psi. It is adjustable. Operating the relief valve at greater pressure will result in a system pressure too high message on the front panel display. It also will put excess stress on the air system components. Vitrector Drive- The vitrector pressure regulator connects to the system pressure mani­fold. It is adjusted to 42 psi. This pressure results in the correct pressure pulse being deliv­ered to the vitrector. The vitrector valve is connected to the regulator. It is a 3-way, normally closed, solenoid operated, air piloted valve. Two exhausts are routed to the valve manifold. The output pressure pulses are connected to the output connector on the system front panel. Timing, pressure, and air flow have all been optimized to provide the high speed cut rate that the VitMan possesses. Kinks in either the pressure or exhaust tubes can cause performance degradation. Air Cylinder Control- The cylinder pressure regulator connects to the system pressure manifold. It is adjusted to 30 psi. The regulated pressure output is connected to the valve manifold. This manifold directly supplies pressure to four 3-way, normally closed, solenoid

Theory of operation

page 20

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Vac. reg. regulator

Cylinder regulator

Relief valve

System Description

Figure 15.
Pneumatic module

Low pressure compressor
intake filter

Main compressor

Vac. reg. zero and
span adjust

Vacuum regulator

Vitrector regulator

Vibration mounts

Filter drain tube

Coalescing filter

Cylinder valves

Low pressure
compressor

Figure 16.
Pneumatic module, bottom

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Hydrophobic filters

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Vacuum pump

Theory of operation

System Description

operated, air piloted valves. Three of the valves are used to control air cylinders which drive the pinch valves on the system front panel. The fourth is connected to the air cylinder that is used in the light source backup mechanism. The exhausts on three of the valves is plumbed back to the valve manifold (separate from the pressure channel). The exhaust of the valve manifold is connected to a length of tubing that acts as a muffler. The pressure from the valve manifold is connected to an additional valve (Light Y). It is a 3-way, normally open, solenoid operated, air piloted valve. The valve is connected to the air cylinder in the light source backup mechanism. It works in concert with the normally closed valve (Light X), mounted on the valve manifold, to control the position of the air cylinder. Connections to the air cylinder from both valves contain an orifice. The orifices act to slow the cylinder motion. Vacuum Regulator Pilot Pressure- The vac. reg. pressure regulator connects to the system pressure manifold. It is adjusted to 20 psi. The regulated pressure is connected to the vacuum regulator. The vacuum regulator uses this pressure to drive the internal regula­tion valve. System Vacuum- The VitMan requires vacuum to operate. Two methods of providing vacuum are provided. A connection for an external vacuum supply is accessible on the system back panel. The system requires an minimum of 550 mmHg vacuum to operate correctly. An internal vacuum pump is contained in the pneumatic module. The pump will maintain the appropriate vacuum under all normal operating conditions. The exhaust of the pump is connected to a length of tubing, which acts as a muffler. The intake of the pump is connected via a “T” to the cassette manifold. The connection is protected with a hydropho­bic filter. The other leg of the “T” is connected to the external vacuum input connector. The external vacuum input connector has a built in shut-off valve that is opened when a hose is connected to it on the outside of the system. This is of interest if the system is relying on it’s internal pump and a hose is connected to the external vacuum input connector. If the hose isn’t shut off at the distal end or if it is connected to something that represents too great of a load, then the internal pump will be unable to provide the necessary vacuum to the system. The valves in the pump do not put an additional load on the external vacuum supply. The cassette manifold provides the connection to the aspiration cassette (see aspiration surgical function for explanation on how the cassette operates). The cassette manifold contains a channel that connects the source vacuum to the 500cc chamber of the cassette, which acts as an accumulator. Vacuum Output Control- The vacuum stored in the 500cc chamber of the aspiration cassette is used to control the vacuum level of the 50cc chamber of the aspiration cassette. Vacuum is routed from the cassette manifold to the input of the vacuum regulator. The vacuum regulator responds to a voltage control signal. It uses the pilot pressure to control the vacuum output. It contains an internal pressure sensor for feedback. The output of the vacuum regulator is protected with a hydrophobic filter and is then connected to the cas­sette manifold. The cassette manifold contains a channel that connects the output of the vacuum regulator to the 50cc chamber of the cassette. Two sensors (X101 and X100) are connected to the cassette manifold. They monitor the vacuum level in both chambers of the cassette. The system is able to modify the voltage command to the vacuum regulator to fine tune the output vacuum. The tubing connecting X100 to the cassette manifold in

Theory of operation

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System Description

cludes a “T” that is connected to an orifice. The orifice ensures that there is always a slight
load on the vacuum system, even when the output of the aspiration cassette is plugged.
This helps stabilize the control loop and improves response time.
Air Exchange- The components that comprise the air exchange portion of the system
pneumatics are separated from the rest of the pneumatics. The air pressure source is a
small rotary vane compressor. The intake of the compressor is protected by a filter. The
output of the compressor is connected to an accumulator. The accumulator dampens
pressure pulses. The other side of the accumulator is connected to a sensor, an orifice and
a valve. The sensor monitors the output pressure of the compressor, regardless of whether
the output of the air exchange surgical function is enabled or not. The orifice ensures that a
slight load is always placed on the compressor. The valve is a 2-way, solenoid operated, air
piloted valve. It is used to isolate the system air exchange output from the pressure source.
It allows the pressure source to start and stabilize before the output is connected. It also
allows the system to disconnect the output in case the pressure source exceeds allowable
limits. The output of the valve is connected to a sensor and to the air exchange output
connector. The sensor monitors the output pressure of the system. It allows the to compare
the output to the pressure source pressure and make decisions accordingly.
Floppy Disk Drive - The floppy disk drive can be used to perform system software up­dates, load diagnostics, configure the system to user preferences and to record system
function during surgery. Once a minute, the floppy disk drive is checked for the presence
of a diskette. If a disk is present (and not locked) the system function for the past minute
will be recorded. The data will be appended to the PC compatible file VITMAN.LOG. If the
file does not exist, it will be created. If the data cannot be saved, it is discarded.
Several menu mode commands are available to perform actions on a diskette. The direc­tory of a diskette may be displayed. The system software and user preferences may be
saved or loaded. The file VITMAN.LOG may be deleted. A diskette may be formatted.
The event log or system data may also be saved.
The floppy disk drive is mounted to the side of the system. It is controlled by the CPU
electronics board. The CPU-floppy signal cable routes control signals to the floppy disk
drive. The analog-floppy power cable is connected to the analog electronics board. It pro­vides power to the floppy disk drive.
LCD Display - The LCD display is used to display the current settings and operational
state of the surgical functions. Two modes are available, normal and menu mode. While in
normal mode the state of the surgical functions is displayed. The display area is divided
among the various surgical functions. The bottom line of the display area is the status line.
Any problem detected will result in a message being displayed in the status line. If more
than one problem exists a message will display for two seconds before changing to the
next message.
Menu mode allows the user to change all aspects of the system configuration. The
button is used to enter and exit menu mode. While in normal mode, if the

Display

pressed and held for one second, menu mode is entered. While in menu mode, pressing

Display

button is

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Theory of operation

System Description

the

Display

active. Only the LCD display is effected, however, values modified may effect the surgical
functions. The entire menu may be traversed and all information can be displayed without
using the
While in normal mode, the user can adjust the contrast and back light intensity. The left
and right arrow buttons can be used to change the LCD display contrast level. The left
arrow will make the contrast darker. The right arrow will make the contrast lighter. The up
and down arrow buttons can be used to change the LCD display back light intensity. The
up arrow will increase the back light intensity. The down arrow will decrease the back light
intensity.
The LCD electronics board is mounted to the CPU electronics board. It receives power and
control signals from the CPU electronics board via a board to board connector.
Power Supply- The VitMan receives electrical power through a detachable cord that con­nects to the power entry module on the system back panel. The main power switch for the

button will exit menu mode. While in menu mode, all surgical functions remain

Enter

button. The

Enter

button is required to save any change.

Figure 17.
Block diagram of power distribution

GND
A

Power Entry Module

CPU electronics board

Ultrasound electronics board

Floppy disk drive

Power Filter

Chassis

Analog electronics board

Power Supply
L1 +24
L2/N

GNDD

+S

-S

+12

+S

-S

-

-

system and the system fuse/s are contained in the power entry module. Care should be
taken that the proper rating and number of fuses are installed. The power entry module is
connected to the power filter, which is mounted on top of the power supply. The filter re­duces conducted electrical noise. The output of the filter is connected to the AC inputs of
the power supply. It is a dual output 600W “universal input” switching power supply. The
power supply provides an AC OK indication which is connected to the CPU electronics
board with the AC OK cable. If AC OK is lost a message is displayed in the status line, and
the system attempts to do an emergency shutdown. The power supply is mounted to the
system crossrails under the air duct. It provides +12 and +24 volts DC to the analog

Theory of operation

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System Description

electronics board via the analog-power supply cable. The analog electronics board serves
as a power conditioning and distribution point. Unregulated +12 and +24 volts, regulated
+12 and -12 volts, +5 volts, VCC, -22 volts, and various grounds are distributed from here.
Speaker - The speaker is used to generate warning and error tones at the request of the
surgical functions. If enabled (Audio Services \ Key Click), a key click tone will be gener­ated when a valid keyboard button is depressed. When energy is being delivered to the
ultrasound hand piece, a tone will be generated. The audio volume can be adjusted (Audio
Services \ Audio Amplitude). The speaker can be disabled ( Audio Services). Several
other options are available through menu mode.
The speaker is mounted to the bottom of the air duct behind the light source fan (refer to
figure 7). The analog-speaker signal cable is connected to the analog electronics board on
one end and permanently attached to the speaker at the other. A D/A channel on the ana­log electronics board is used by the system to generate tones. The output of the D/A is
connected to an audio amplifier. The output of the audio amplifier is connected to the
speaker. The gain of the audio amplifier is connected to another D/A channel.
System Cooling- The internal temperature of the system is maintained at an acceptable
level by the flowing room temperature air through the system. The system fan (mounted on
the system back panel) pulls in air from outside the system and forces it past the main
compressor. Air circulates within the system. The light source fan (mounted on the back of
the light source enclosure) draws air from inside the system and blows it into the light
source. Air passes through the light source and exits the back of the system through the air
duct. Directing air flow in this manner protects the rest of the system from the high tem­peratures developed by the light source. Both fans operate when the system power is on.
The analog-fan power cables provide power to the fans. The system fan’s power cable has
connectors to detach from the fan. The light source fan’s power cable is permanently
attached to the fan. The system fan has a filter on the intake side of the fan. The filter
should be monitored regularly and cleaned when it becomes dirty. A temperature sensor is
located on the analog electronics board. The system will detect and report excesses in the
system temperature. If the system temperature exceeds reasonable limits, the system
attempts to reduce it by turning off high current draw items. If the current system tempera­ture is 55 °C or higher, the message “Device disabled” will be displayed in the status line
and an audible indication will be given. Ten seconds after this error occurs the illumination
bulbs will be turned off and the pressure and vacuum pumps will be shut off.
Keyboard - The keyboard allows the user to communicate with the system. It can be used
to turn on and off the surgical functions, as well as modify their operating characteristics.
The keyboard is an integral portion of the front panel overlay. It is comprised of a matrix of
membrane switches. A ribbon cable exits the keyboard near the top of the system and
connects to the CPU electronics board.
Foot Pedal - The foot pedal allows the surgeon communicate control commands to the
system. This is accomplished through rotation of the foot pedal position. An analog vertical
rotation signal is produced with a linear potentiometer coupled to a gear. Refer to figure 18
for a schematic of the foot pedal wiring and figure 21 for a view inside the foot pedal.

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Theory of operation

System Description

Horizontal rotation is monitored with two switches. A cam mechanism causes horizontal
rotation to “stop” in three positions. Either left or right rotation causes a switch to activate.
The center position is neutral. The left and right switches are used to request reflux and
enable the vitrector and ultrasound surgical functions. Vertical rotation is used to change
the vacuum level in linear aspiration modes, and specify the power level for linear ultra­sound. An additional switch indicates when the foot pedal is all the way up (rest position).
The foot pedal up switch is used as an redundant indication that aspiration, irrigation, and

Top

7

Blue (Position)

6

Green (Up)

5

Yellow (Left)

4

Orange (Right)

3

Red (Present)

2

Brown (+5VDC)

1

Black (Gnd)

9

Drain (Chassis GND)

8

Shield (Chassis GND)

Bottom

NO

C

Left

C

Right

C

Up

NC

NO

NC

NC

NO

Figure 18.
Foot pedal schematic

Left switch is located on
the right side of the pedal

cutting (vitrector or ultrasound) should stop.
The top of the foot pedal includes a pair of adjustable foot guides (refer to figure 19). By
pressing on the lock release, located on the left front of the pedal, the guides are allowed to
move. This feature allows the foot pedal to accommodate a wide range of foot sizes with­out causing smaller feet to slide around in between the guides. The foot guides pivot near
the back of the foot pedal top. A guide rod, at the front of the foot guides, controls their
position. Underneath the cover for the foot pedal top is the locking mechanism for the guide
rods (refer to figure 20). When the lock release lever is depressed, the guide rods should
move freely in the lock mechanism. The top of the foot pedal may be removed from the
base by depressing the pivot pin located on either side of the pedal.

Theory of operation

page 26

Syntec

VitMan

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ã

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Pivot pin

System Description

Figure 19.
VitMan foot pedal

Foot guide

Lock release lever

Cable

Figure 20.
Foot guide lock mechanism

Potentiometer

Cam

Left switch

Guide rod

Position return springs

Syntec

VitMan

Up switch

ãã

ã

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Right switch

page 27

Figure 21.
Foot pedal internal mechanisms

Theory of operation

Keyboard

System Description

System Interconnect Block Diagram

Pneumatic moduleFront panel Rear panel

Foot Pedal

Ultrasound Out

Valve

Control

Analog Data

Pump
Power

Main Fan Power

AC

Connections

CPU electronics board

Floppy

Data

CPU Power

Floppy Power

Speaker

Drive

Analog electronics

board

"A"

Bulb

Light Source

Fan Power

Power

Floppy disk drive Light source

"B" Bulb

Power

Ultrasound Power

Ultrasound Data

AC OK Indication

System DC Power

Ultrasound electronics

board

Power supply

Earth ground

Speaker

System interconnect block diagram

page 28

Ground

ChassisSystem covers

Syntec

VitMan

ãã

ã

ãã

System Description

Connector Pinouts

CPU – Analog Signal Cable

niPnoitcnuF

1)BSL(0tibsuBataDlanoitceriD-iB
21tibsuBataDlanoitceriD-iB
32tibsuBataDlanoitceriD-iB
43tibsuBataDlanoitceriD-iB
54tibsuBataDlanoitceriD-iB
65tibsuBataDlanoitceriD-iB
76tibsuBataDlanoitceriD-iB
87tibsuBataDlanoitceriD-iB
98tibsuBataDlanoitceriD-iB

019tibsuBataDlanoitceriD-iB
1101tibsuBataDlanoitceriD-iB
2111tibsuBataDlanoitceriD-iB
3121tibsuBataDlanoitceriD-iB
4131tibsuBataDlanoitceriD-iB
5141tibsuBataDlanoitceriD-iB

61)BSM(51tibsuBataDlanoitceriD-iB
71dnuorG

81)woLevitcA(etirWrossecorporciM
91dnuorG

02)woLevitcA(daeRrossecorporciM
12dnuorG
221tibsuBsserddA
322tibsuBsserddA
423tibsuBsserddA
524tibsuBsserddA
625tibsuBsserddA
726tibsuBsserddA

82)woLevitcA(1tceleSpihCrossecorporciM
92desUtoN
03kcolCmorPEE

13)woLevitcA(2tceleSpihCrossecorporciM
23ataDmorPEElanoitceriD-iB
33dnuorG
43TOPlanretnisladeptoofehtmorfegatloV
53egatloverapmocDELlevelettessaC

63)woLevitcA(TESERrosneserutarepmeT

73)WOLevitcA(langisesnesdellatsnieceipdnahnoitatnemgarF
83kcolCrosneserutarepmeT
93dnuorG
04ataDlanoitceriD-iBrosneserutarepmeT
14dnuorG
24langistrevnoCfodnEretrevnocD/A
34dnuorG
44langiskcolCretrevnocD/A
54dnuorG

64)woLevitcA(tceleSpihCretrevnocD/A
74egatlovylppusTOPladeP
84langisNIDretrevnocD/A

94)woLevitcA(TESERrossecorporciM
05langisTUODretrevnocD/A

AC OK Cable

niPnoitcnuF
1+KOCAylppusrewopoT
2oTKOCAylppusrewop-

CPU – Analog Power Cable

niPnoitcnuF

1)CCV(CDV5+

2)CCVgolanA(CDV5+

3)DNG(dnuorG

4)A-CDV21-golanA(CDV21-

5)DNGgolanA(dnuorG

6)A-CDV21+golanA(CDV21+

7)ylppustsartnocDCL(CDV22­8desUtoN

CPU – Floppy Signal Cable

niPnoitcnuFnoitceriD

1)woLevitcA(teseRegnahCksiDoT

2)woLevitcA(egnahCksiDksiDmorF
3dnuorG

4)woLevitcA(esUnIksiDoT
5dnuorG
6desUtoN
7dnuorG
87tibsuBataDlanoitceriD-iB
9dnuorG

019tibsuBataDlanoitceriD-iB
11dnuorG
2111tibsuBataDlanoitceriD-iB
31dnuorG
41desUtoN
51dnuorG

61)BSM(51tibsuBataDlanoitceriD-iB
71dnuorG

81)woLevitcA(noitceriDpetSksiDoT
91dnuorG

02)woLevitcA(dnammoCpetSksiDoT
12dnuorG
22ataDetirWksiDksiDoT
32dnuorG
42dnammoCetirWksiDksiDoT
52dnuorG
62esnes0kcarTksiDmorF
72dnuorG

82)woLevitcA(1tceleSpihCrossecorporciMksiDoT
92dnuorG
03ataDdaeRksiDksiDmorF
13dnuorG

23)woLevitcA(tceleSdaeHksiDksiDoT
33dnuorG
43]nipetanretlA[)woLevitcA(egnahCksiDksiDmorF

Analog - Floppy Power Cable

niPnoitcnuF
1CDV5+
2dnuorG
3dnuorG
4CDV21+

Syntec

VitMan

ãã

ã

ãã

page 29

Connector pinouts

System Description

Analog - Bulb Cable

niPnoitcnuFnoitcennoC

1blubotCDV42+601FaivCDV42+
2nruterMRAWbluBrotsiserrewopaivblubrofnruteR
3nruterbluBdnuorgotdehctiwS

Analog - Pneumatics Power Cable

niPnoitcnuFnoitcennoC

1pmuPmuucaVotrewoPCDV21+101FaivCDV21+
2nruteRpmuPmuucaVdnuorgotdehctiwS

3

4nruteRrosserpmoCniaMdnuorgotdehctiwS

niaMotrewoPCDV21+

rosserpmoC

201FaivCDV21+

Foot Pedal Signal Cable (internal)

niPnoitcnuF

1dnuorG
22FesufaivylppusladepCDV5+
3C/N
4*dellatsnIladeP
5*thgiRladeP
6C/N
7*tfeLladeP

8)desutoN(*nwoDladeP
9*PUladeP

01noitisoPladeP

* This signal is active when the line is near 0Vdc

Analog - Pneumatics Control Cable

niPnoitcnuFnoitcennoC

1

)CDV5
2CDV21+rotalugeRmuucaVotrewoP
3dnuorGrotalugeRmuucaVotnruteR
4noitcennoCoN
5nruteRevlaVrotcertiV evlavrotcertivehtetavitcaotdnuorgotdehctiwS
6rewoPevlaVrotcertiVevlavehtotrewop001FaivCDV21+

7

nruteR

8

rewoP

9nruteRevlaVxulfeRevlavhcnipehtetavitcaotdnuorgotdehctiwS

01rewoPevlaVxulfeRevlavehtotrewop001FaivCDV21+

11nruteRevlaVnoitagirrI evlavhcnipehtetavitcaotdnuorgotdehctiwS

21rewoPevlaVnoitagirrIevlavehtotrewop001FaivCDV21+

31nruteRevlaVegnahcxEriA

41rewoPevlaVegnahcxEriAevlavehtotrewop001FaivCDV21+

51

nruteR

61

rewoP

bluBB/ApukcaBevlaV

71

nruteR

bluBB/ApukcaBevlaV

81

rewoP

91nruteRrotoMegnahcxEriA

02rewoProtoMegnahcxEriA .derisederusserpehtnognidnepedCDV22+ot0

-0(langiSlortnoCmuucaV

evlaVhcniPnoitaripsA

evlaVhcniPnoitaripsA

evlaVpukcaBbluBB/A

evlaVpukcaBbluBB/A

rotalugeRmuucaVoT

.tuptuoria

.71nipotsuoenatlumiS

.pukcabecruosthgil

rotomegnahcxEriAehtevird

evlavhcnipehtetavitcaotdnuorgotdehctiwS

evlavehtotrewop001FaivCDV21+

selbanE.evlavehtetavitcaotdnuorgotdehctiwS

.evlavehtetavitcaotdnuorgotdehctiwS

evlavehtotrewop001FaivCDV21+

sevoM.evlavehtetavitcaotdnuorgotdehctiwS

evlavehtotrewop001FaivCDV21+

otsedoidrenezV9.3owtaivdnuorgotdehctiwS

Analog - Fan Power Cable

niPnoitcnuF

1401FaivCDV21+

2dnuorG

Analog - Speaker Cable

niPnoitcnuF

1+rekaepsoT

2-rekaepsoT

Analog - Ultrasound Power Cable

niP

1detcennoCtoN1detcennoCtoN
2detcennoCtoN2detcennoCtoN
3detcennoCtoN3detcennoCtoN
4detcennoCtoN4detcennoCtoN
5detcennoCtoN5detcennoCtoN
6detcennoCtoN6detcennoCtoN
7detcennoCtoN7)DNG(dnuorG

8)DNG(dnuorG8)DNG(dnuorG

9)901Faiv(CDV42+9detcennoCtoN

draoBgolanA

rotcennoC

niP

01detcennoCtoN
11detcennoCtoN
21detcennoCtoN

31)901Faiv(CDV42+

41)901Faiv(CDV42+

rotcennoC

draoBdnuosartlU

Analog – Power Supply Cable

Analog - Ultrasound Control Cable

niPnoitcnuFsesuFsdeeF
1CDV21+311F,501F,401F
2CDV21+001F
3CDV42+901F,601F,301F
4dnuorG
5dnuorG
6dnuorG
7CDV21+101F,201F
8CDV21+
9dnuorG

dnuosartlUniP

noitcnuF

.nnoCdraoB

1detcennoCtoN
2dnuorG31
3detcennoCtoN
4detcennoCtoN
5detcennoCtoN
6detcennoCtoN
7dednuorg=wol,tluaFdnuorG8
8detcennoCtoN
9detcennoCtoN

01detcennoCtoN

11)CDV0.5-5.0+(lortnoCrewoP41
21detcennoCtoN
31hgihevitca,elbanEtuptuOrewoP6
41detcennoCtoN
51detcennoCtoN
61detcennoCtoN

golanAniP

.nnoCdraoB

Connector pinouts

page 30

Syntec

VitMan

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System Description

Pneumatic Block Diagram

Vitrector Out

Vitrector

Control

Valve

Regulator

Aspiration

Pinch Valve

Fluid Control

Control

Control

Valve

Regulator

Valve

Reflux

Pinch Valve

Control

Valve

Irrigation

Pinch Valve

Air Cylinder

Light Source Backup

Control

Valve

Control

Valve

Sensor

Sensor

Control

Valve

Air Exchange Out

Accumulator

Sensor

Air Supply

Main Compressor

Manifold

Filter

Relief

Valve

Aspiration

Regulator

Vacuum

Regulator

Vacuum Pump

Sensor

Aspiration Out

Controlled

Vacuum

Sensor

Vacuum Accumulator

and Aspirant Storage

Air Exchange

Low Pressure

Compressor

Syntec

VitMan

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page 31

Pneumatic block diagram

Status Line Messages

Status Line Messages

The status line of the LCD display will show information concerning the current state of the
device. All error and warning conditions will generate a status line message. In addition to
error and warning messages, informational messages are displayed as well. This list
contains all types of status line messages, sorted in alphabetical order. Following each
message is an explanation of, and in some cases a possible solution to, the condition
being reported.

dd-mmm-yy hh:mm:ss

The date and time will display when the date & time is selected for the status line default
and no other messages need to be displayed. The status line default may be selected
using the “Status Line Default” command in the “Display” menu. The date and time can be
modified using the “Date & Time” menu, found in the main menu. The date and time are
used to time stamp any files created.

Dr. Cutright

The user name will display when the user name is selected for the status line default and
no other messages need to be displayed. The status line default may be selected using
the “Status Line Default” command in the “Display” menu. The user name can be modified
using the “Edit User Name” command, found in the “Select User” menu.

+12 volt fuse problem

The +12 volt fuse on the analog board has opened. This fuse is resettable, powering the
VitMan off and then on may clear the problem.

This message indicates that the +12 volt power is not present. In addition to the fuse
opening, this message could be caused by a problem with the DC-DC converter that gener­ates the +12 volt power.

-12 volt fuse problem

The -12 volt fuse on the analog board has opened. This fuse is resettable, powering the
VitMan off and then on may clear the problem.

This message indicates that the -12 volt power is not present. In addition to the fuse open­ing, this message could be caused by a problem with the DC-DC converter that generates
the -12 volt power.

-22 volt fuse problem

The -22 volt fuse on the analog board has opened. This fuse is resettable, powering the
VitMan off and then on may clear the problem.

This message indicates that the -22 volt power is not present. The -22 volt power is used
to generate the contrast for the LCD display. If the -22 volt power is not present it is un­likely that this message will be legible. In addition to the fuse opening, this message could

Status line messages

page 32

Syntec

VitMan

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ã

ãã

Status Line Messages

be caused by a problem with the DC-DC converter that generates the -22 volt power or the
absence of the +12Vdc-Main voltage. The +12Vdc-Main voltage is fused and monitored.

500cc sensor problem

The vacuum sensor used to monitor the vacuum pump pressure is indicating a problem. If
the aspiration cassette is present and the vacuum level is zero or if the aspiration cassette
is missing and pressure is present, this message will be displayed in the status line. This
message may appear along with the “Low vacuum level”, “Check cassette tubing” and
“Please lock cassette” messages, when the aspiration cassette is present but not locked.

This message indicates that the 500cc sensors output voltage appears to be low. The
500cc sensors output voltage is read using an A/D converter. This voltage is then reduced
by the voltage present when the sensors port is at atmosphere. The result represents the
vacuum level present on the sensors port. If the voltage read is less than the previously
recorded voltage present at atmosphere, then pressure may be present on the sensor, the
A/D converter may have a problem or the sensor may have a problem. A leak in the
vacuum system may also cause this message.

50cc sensor problem

The vacuum sensor used to monitor the small chamber of the aspiration cassette is indicat­ing a problem. If the aspiration cassette is present and the vacuum level is zero (when
vacuum should be present) or if the aspiration cassette is missing and pressure is present,
this message will be displayed in the status line.

This message indicates that the 50cc sensors output voltage appears to be low. The 50cc
sensors output voltage is read using an A/D converter. This voltage is then reduced by the
voltage present when the sensors port is at atmosphere. The result represents the vacuum
level present on the sensors port. If the voltage read is less than the previously recorded
voltage present at atmosphere, then pressure may be present on the sensor, the A/D
converter may have a problem or the sensor may have a problem. A leak in the aspiration
system may also cause this message.

Air exchange xxx mmHg

While the desired air exchange pressure is modified, the current eye pressure will be dis­played in the status line, where “xxx” is the value of the eye pressure.

Air exchange excess

When the air exchange pressure exceeds the warning pressure limit for a time longer than
the warning time limit, this message is displayed in the status line. The warning pressure
limit and the warning time limit may be adjusted using the “Air Exchange Values” menu in
the “Current Settings” menu.

Air exchange problem

If the air exchange valve is open, the pressure difference between the eye pressure sensor
and the air exchange pump pressure sensor should be less than 15 mmHg (for low flow
rate conditions the pressure difference will be close to zero mmHg). If a pressure differ

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VitMan

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page 33

Status line messages

Status Line Messages

ence of 15 mmHg or greater is detected, this message will be displayed. This message will
appear along with the “Service required” message.

Air exchange set: xxx

While the air exchange surgical function is on, the pressure setting is displayed in the
status line, where “xxx” is the pressure setting value in mmHg.

Air pump fuse problem

The air exchange pump fuse on the analog board has opened. This fuse is not resettable
and will need to be replaced in order to clear the problem.

This message indicates that the +24 volt power is not present on the air exchange pump
control circuitry. This fuse also protects the audio circuitry. The speaker will not operate if
the fuse has failed. In addition to the fuse opening, this message could be caused by a
problem with the +24 volt output of the power supply.

Air pump hours excess

The run time on the air exchange pump has exceeded the maximum limit. The pneumatics
module needs to be serviced. The “Display Pump Hours” command, found in the “Service
Pneumatics” menu of the “Service Menu”, can be used to display the current air pump
hours.

If the air exchange pump hours exceed 2000, this message will be displayed. While the air
exchange surgical function is on this message is disabled.

Air pump problem

The test of the air exchange pump indicates that it may not be capable of generating pres­sure. This message may be accompanied by the “Air pump fuse problem” or the “Service
required” messages.

At power-up, a test is made of the ability of the air exchange pump to generate pressure. If
pressure is not detected at power-up, the test will be run each time the air exchange surgi­cal function is enabled. If the test fails, this message will be displayed.

Air sensor problem

The pressure sensor used to monitor the air pump used in the air exchange surgical func­tion is indicating a problem. If the air exchange surgical function is off and vacuum is
present or if the air exchange surgical function is on and no pressure is present, this mes­sage will be displayed in the status line.

This message indicates that the air exchange pump sensors output voltage appears to be
low. The air exchange pump sensors output voltage is read using an A/D converter. This
voltage is then reduced by the voltage present when the sensors port is at atmosphere.
The result represents the pressure level present on the sensors port. If the voltage read is
less than the previously recorded voltage present at atmosphere, then vacuum may be

Status line messages

page 34

Syntec

VitMan

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ã

ãã

Status Line Messages

present on the sensor, the A/D converter may have a problem or the sensor may have a
problem. A leak in the air exchange system may also cause this message.

Alarm cut off

While not in menu mode, the ENTER button will allow alarm cut off. Pressing and releas­ing the ENTER button will mute any currently playing alarm or warning tone. This is nor­mally only required when the error or warning tones are in continuous mode. The error and
warning tone modes may be adjusted using the “Audio Services” menu.

Anterior Aspiration

This message indicates that the aspiration surgical function has entered anterior aspiration
mode, using the aspiration on/off button.

Anterior Fixed Phaco

This message indicates that the ultrasound surgical function has entered the anterior fixed
phaco mode, using the ultrasound on/off button.

Anterior Frag

This message indicates that the ultrasound surgical function has entered the anterior frag
mode, using the ultrasound on/off button.

Anterior Linear Phaco

This message indicates that the ultrasound surgical function has entered the anterior linear
phaco mode, using the ultrasound on/off button.

Anterior Linear Rate

This message indicates that the vitrector surgical function has entered anterior linear cut
rate mode, using the vitrector on/off button.

Anterior Vitrectomy

This message indicates that the vitrector surgical function has entered the anterior vitrec­tomy mode, using the vitrector on/off button.

Bulb “A” FET problem

If bulb “A” is present and enabled but is not illuminated, this message will be displayed in
the status line. A field effect transistor (FET) is used to sink the bulb current and illuminate
the bulb. This message indicates a hardware problem that requires servicing.

A field effect transistor (FET) is used to sink the bulb current and illuminate the bulb. The
bulb detection logic uses the voltage across the FET to determine the status of the bulb.
The voltage across the FET is read using an A/D converter. If the voltage across the FET
is greater than 2.5 volts while the bulb is enabled, this message will be displayed. If the A/
D converter has a problem and reports a high voltage while the bulb is enabled, this mes­sage will be displayed.

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VitMan

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page 35

Status line messages

Status Line Messages

Bulb “A” hours xxx

This is the in use time for bulb “A”, where “xxx” is in hours. This message will be displayed
when the illumination surgical function is turned on, and the current bulb is bulb “A”.

Bulb “A” large hours

When the VitMan is powered up or if illumination is turned on while bulb “A” is selected, this
message will be displayed if the bulb “A” hours exceed 40 hours.

Bulb “A” missing

If bulb “A” is not detected when the VitMan is powered up, this message will be displayed.
A field effect transistor (FET) is used to sink the bulb current and illuminate the bulb. The

bulb detection logic uses the voltage across the FET to determine the presence of the bulb.
The voltage across the FET is read using an A/D converter. If the voltage across the FET
is less than 2.5 volts, if the A/D converter has a problem and reports a low voltage, if the
bulb power fuse is open or if the +24 volt output of the power supply is not present, the bulb
will not be detected.

Bulb “A” open

When bulb “A” is not detected, this message will be displayed in the status line. The most
likely solution is to replace the bulb.

A field effect transistor (FET) is used to sink the bulb current and illuminate the bulb. The
bulb detection logic uses the voltage across the FET to determine the presence of the bulb.
The voltage across the FET is read using an A/D converter. If the voltage across the FET
is less than .03 volts, this message will be displayed. If the A/D converter has a problem
and reports a low voltage, this message will be displayed. The power to the bulbs is fused
and if the fuse is open this message will be displayed. In addition to the fuse opening, this
message could be caused by a problem with the +24 volt output of the power supply.

Bulb “A” problem

If the bulb detection logic indicates bulb “A” is on, while the illumination surgical function is
off, this message will be displayed in the status line.

A field effect transistor (FET) is used to sink the bulb current and illuminate the bulb. The
bulb detection logic uses the voltage across the FET to determine the presence of the bulb.
The voltage across the FET is read using an A/D converter. If illumination is off and the
voltage across the FET is greater than .03 volts, but less than 2.5 volts, or if the A/D con­verter has a problem and reports a voltage within this range, this message will be dis­played. If illumination is on this message will not be displayed.

Bulb “B” FET problem

If bulb “B” is present and enabled but is not illuminated, this message will be displayed in
the status line. A field effect transistor (FET) is used to sink the bulb current and illuminate
the bulb. This message indicates a hardware problem that requires servicing.

Status line messages

page 36

Syntec

VitMan

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ãã

Status Line Messages

A field effect transistor (FET) is used to sink the bulb current and illuminate the bulb. The
bulb detection logic uses the voltage across the FET to determine the status of the bulb.
The voltage across the FET is read using an A/D converter. If the voltage across the FET
is greater than 2.5 volts while the bulb is enabled, this message will be displayed. If the A/
D converter has a problem and reports a high voltage while the bulb is enabled, this mes­sage will be displayed.

Bulb “B” hours xxx

This is the in use time for bulb “B”, where “xxx” is in hours. This message will be displayed
when the illumination surgical function is turned on, and the current bulb is bulb “B”.

Bulb “B” large hours

When the VitMan is powered up or if illumination is turned on while bulb “B” is selected, this
message will be displayed if the bulb “B” hours exceed 40 hours.

Bulb “B” missing

If bulb “B” is not detected when the VitMan is powered up, this message will be displayed.
A field effect transistor (FET) is used to sink the bulb current and illuminate the bulb. The

bulb detection logic uses the voltage across the FET to determine the presence of the bulb.
The voltage across the FET is read using an A/D converter. If the voltage across the FET
is less than 2.5 volts, if the A/D converter has a problem and reports a low voltage, if the
bulb power fuse is open or if the +24 volt output of the power supply is not present, the bulb
will not be detected.

Bulb “B” open

When bulb “B” is not detected this message will be displayed in the status line. The most
likely solution is to replace the bulb.

A field effect transistor (FET) is used to sink the bulb current and illuminate the bulb. The
bulb detection logic uses the voltage across the FET to determine the presence of the bulb.
The voltage across the FET is read using an A/D converter. If the voltage across the FET
is less than .03 volts, this message will be displayed. If the A/D converter has a problem
and reports a low voltage, this message will be displayed. The power to the bulbs is fused
and if the fuse is open this message will be displayed. In addition to the fuse opening, this
message could be caused by a problem with the +24 volt output of the power supply.

Bulb “B” problem

If the bulb detection logic indicates bulb “B” is on, while the illumination surgical function is
off, this message will be displayed in the status line.

A field effect transistor (FET) is used to sink the bulb current and illuminate the bulb. The
bulb detection logic uses the voltage across the FET to determine the presence of the bulb.
The voltage across the FET is read using an A/D converter. If illumination is off and

ãã

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Syntec

VitMan

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page 37

Status line messages

Status Line Messages

the voltage across the FET is greater than .03 volts, but less than 2.5 volts, or if the A/D
converter has a problem and reports a voltage within this range, this message will be dis­played. If illumination is on this message will not be displayed.

Bulb fuse problem

The illumination fuse on the analog board has opened. This fuse is resettable, powering
the VitMan off and then on may clear the problem.

This message indicates that the bulb power is not present. In addition to the fuse opening,
this message could be caused by a problem with the +24 volt output of the power supply.

Calibrate air pump

If the tables used to regulate the air exchange operation are invalid, this message will be
displayed in the status line. If this message is displayed, it is recommended that the air
exchange be calibrated before use. The air exchange can be calibrated using the “Calibra­tion Routines” found in the “Service Menu”.

Calibrate aspiration

If the tables used to regulate the aspiration operation are invalid, this message will be
displayed in the status line. If this message is displayed, it is recommended that the aspi­ration surgical function be calibrated before use. Aspiration can be calibrated using the
“Calibration Routines” found in the “Service Menu”.

Calibrate foot pedal

If the values used to regulate the foot pedal operation are invalid, this message will be
displayed in the status line. If this message is displayed, it is recommended that the foot
pedal be calibrated before use. The foot pedal can be calibrated using the “Calibration
Routines” found in the “Service Menu”.

Cassette full

If the cassette level detection logic determines that the aspiration cassette is full, this mes­sage will be displayed in the status line. This is the second level of warning and occurs
after about 300 cc of fluid are aspirated.

Cassette over full

If the cassette level detection logic determines that the aspiration cassette is over full, this
message will be displayed in the status line. This is the last level of warning and occurs
after about 325 cc of fluid are aspirated. When this condition is detected the vacuum pump
will stop and aspiration is no longer possible. Replacement the aspiration cassette is
recommended.

Cassette position bad

If the cassette level detection logic determines that the aspiration cassette is not properly
aligned, this message will be displayed in the status line. This generally indicates that the
cassette is pushed into the cassette chamber prior to rotating the knob into the lock posi­tion. To correct the problem, rotate the knob to the unlocked position then back to the

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locked position without pressing on the cassette. The “Re-position cassette” and “Use
locking knob only” messages will also be displayed.

Cassette problem

If a high fluid level is detected in the small chamber of the aspiration cassette, this mes­sage will be displayed in the status line. This condition will stop the vacuum pump and
prevent the use of aspiration. If this condition is suspected to have been detected in error,
remove the aspiration cassette, wait for one second, and reinsert the aspiration cassette. If
the condition persists, replace the aspiration cassette. The “Replace cassette” message
will also be displayed.

This message could be caused by fluid drops on the 50cc chamber prism. It could also be
caused by a failure of the cassette valve. If the valve doesn’t open, then the fluid level will
eventually cover the prism. Mechanical alignment of the analog electronics board could
cause this message to display when using functional cassettes. The analog electronics
board should be aligned directly against the inside of the front panel of the system enclo­sure.

Check cassette tubing

If the foot pedal is in the rest position and the vacuum level in the 500cc chamber falls
below 400 mmHg, this message will be displayed in the status line. This may be the result
of using the aspiration surgical function or requesting a prime cycle, with no tubing con­nected to the aspiration cassette. This message may appear along with the “Low vacuum
level” and “Please lock cassette” messages.

When the aspiration surgical function is on and the foot pedal is in the rest position, an
attempt is made to keep the 50cc chamber vacuum level at 1 mmHg. If tubing is not
present, the vacuum level of the 500cc chamber may be reduced to below an acceptable
value. If trying to keep the 50cc chamber at 1 mmHg causes a reduction in the 500cc
chamber vacuum level, the “Check cassette tubing” status line message will be displayed.
If the vacuum level is reduced during normal use, this status line message should not be
displayed.

Check external source

This message will be displayed if a problem is detected with the system pressure or
vacuum level and the external connections are selected for use. If the pressure compres­sor mode is set to external pressure or auto select and the “Low system pressure” or “High
system pressure” status line messages are displayed, this message will also be displayed.
If the vacuum pump mode is set to external vacuum or auto select and the “Low vacuum
level” status line message is displayed, this message will also be displayed. The most
likely cause of this message is that the hose(s) are connected to the VitMan, but not to the
external source of pressure (or vacuum). The user should check the external connections,
and if connected, then check the external source pressure levels.

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Status Line Messages

Contrast adjust

While not in menu mode, the LEFT ARROW and RIGHT ARROW can be used to adjust
the contrast of the LCD display. This message will be displayed as the contrast is adjusted.

Currently in stage 1

When the stage button is pressed and released, the current stage will be displayed. If the
current stage is stage one, this message will be displayed in the status line.

Currently in stage 2

When the stage button is pressed and released, the current stage will be displayed. If the
current stage is stage two, this message will be displayed in the status line.

Currently in stage 3

When the stage button is pressed and released, the current stage will be displayed. If the
current stage is stage three, this message will be displayed in the status line.

Currently in stage 4

When the stage button is pressed and released, the current stage will be displayed. If the
current stage is stage four, this message will be displayed in the status line.

Currently in stage 5

When the stage button is pressed and released, the current stage will be displayed. If the
current stage is stage five, this message will be displayed in the status line.

Currently in stage 6

When the stage button is pressed and released, the current stage will be displayed. If the
current stage is stage six, this message will be displayed in the status line.

Currently in stage 7

When the stage button is pressed and released, the current stage will be displayed. If the
current stage is stage seven, this message will be displayed in the status line.

Device disabled

If the internal device temperature is 55 °C or higher, this message is displayed in the status
line. This message indicates an error condition and after ten seconds the surgical functions
will be affected. The illumination surgical function will be turned off. The system pressure
compressor and vacuum pump will be turned off, effectively disabling aspiration, irrigation,
the vitrector and the ultrasound. The air exchange surgical function will remain unaffected.

The temperature sensor monitors the internal temperature of the system and resides on
the analog board. The temperature sensor is a serial device that provides a properly for­matted response to a number of commands. If proper communication is not established,
any values read are not used. If the temperature sensor has a problem and reports a high
temperature condition, this message may be displayed.

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Disk available hh:mm

This is the minimum time remaining to record data on the floppy disk, where “hh” is the
hours and “mm” is the minutes. After the data from the previous minute is saved on the
disk, this message is displayed in the status line.

Disk space warning

If the minimum time remaining is less than 30 minutes, this message will be displayed in
the status line.

Disk write protected

The write protect status of the floppy disk is checked when an attempt is made to save data
on the disk. If the floppy disk is write protected, this message will be displayed in the status
line.

Diskette is full

If no free space remains on the floppy disk, this message is displayed in the status line.

Diskette read problem

If the boot block, file allocation tables or root directory of the floppy disk cannot be read,
this message is displayed in the status line. If this condition persists, the disk may need to
be formatted.

If the data cable between the CPU board and the disk drive is faulty or if power is not
present on the disk drive, this message will be displayed. The disk drive has a jumper on
the drive select signal. If the jumper is missing or selecting drive 0, this message will be
displayed.

Drive fuse problem

The main compressor (vitrector drive pressure) fuse on the analog board has opened. This
fuse is not resettable and will need to be replaced in order to clear the problem.

This message indicates that the main compressor power is not present. In addition to the
fuse opening, this message could be caused by a problem with the +12 volt output of the
power supply.

Drive sensor problem

The pressure sensor used to monitor the main compressor (vitrector drive pressure) is
indicating a problem. The sensor is indicating that the system pressure is zero.

This message indicates that the system pressure sensors output voltage appears to be low.
The system pressure sensors output voltage is read using an A/D converter. This voltage
is then reduced by the voltage present when the sensors port is at atmosphere. The result
represents the pressure level present on the sensors port. If the voltage read is less than
the previously recorded voltage present at atmosphere, then vacuum may be

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Status line messages

Status Line Messages

present on the sensor, the A/D converter may have a problem or the sensor may have a
problem. A leak in the system pressure may also cause this message.

Eye pressure alarm

If the air exchange surgical function is on and the current eye pressure is not within (5
mmHg of the current set point, this message is displayed in the status line.

Eye sensor problem

The pressure sensor used to monitor the eye pressure, for the air exchange surgical func­tion, is indicating a problem. If the air exchange surgical function is off and vacuum is
present or if the air exchange surgical function is on and no pressure is present, this mes­sage will be displayed in the status line.

This message indicates that the eye pressure sensors output voltage appears to be low.
The eye pressure sensors output voltage is read using an A/D converter. This voltage is
then reduced by the voltage present when the sensors port is at atmosphere. The result
represents the pressure level present on the sensors port. If the voltage read is less than
the previously recorded voltage present at atmosphere, then vacuum may be present on
the sensor, the A/D converter may have a problem or the sensor may have a problem. A
leak in the air exchange system may also cause this message.

Fan fuse problem

The fan fuse on the analog board has opened. This fuse is resettable, powering the
VitMan off and then on may clear the problem.

This message indicates that the fan power is not present. In addition to the fuse opening,
this message could be caused by a problem with the +12 volt output of the power supply.

Floppy fuse problem

The disk drive fuse on the analog board has opened. This fuse is resettable, powering the
VitMan off and then on may clear the problem.

This message indicates that the disk drive power is not present. In addition to the fuse
opening, this message could be caused by a problem with the +12 volt output of the power
supply or the disk drives +5 volt regulator.

Foot pedal is active

When the foot pedal is active, several actions are prohibited. The user may not change the
mode of the aspiration, vitrector or ultrasound surgical functions. The ultrasound hand­piece may not be tuned. The aspiration valve button may not be used to open or close the
aspiration valve or start a prime cycle. While in anterior mode, the irrigation valve button
may not be used to open or close the irrigation valve. The stage button may not be used to
change mode of the surgical functions.

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Foot pedal problem

If the foot pedal down switch indicates that the foot pedal is up, but the foot pedal position
indicates depression of 10% or more, this message will be displayed in the status line.
This indicates a problem with the foot pedal down switch (internal to the foot pedal), the
foot pedal cable or connector. The hardware that senses the foot pedal down switch may
also have a problem.

The condition of the foot pedal, as measured by the system software, can be viewed using
the “Calibrate Foot Pedal” command under “Calibration Routines” under the “Service
Menu”.

Ground fault detected

If a ground fault is detected by the ultrasound hardware, this message will be displayed in
the status line. The ground fault indicates that the ultrasound handpiece is not properly
grounded. No energy will be delivered to an ungrounded ultrasound handpiece. This
problem may be corrected by disconnecting and reconnecting the ultrasound handpiece.

An interruption of the ground path anywhere can cause this message to display. Check the
ground connections of the ultrasound output cable at both the front and rear panels of the
system. Also, the ultrasound electronics board uses the board mounting hardware to sense
ground. If the mounting hardware isn’t grounded then a ground fault will be sensed. Note
that the entire system chassis is part of the ground path, so the front and rear panels of the
system are ground.

High cassette level

If the cassette level detection logic determines that the aspiration cassette level is high, this
message will be displayed in the status line. This is the first level of warning and occurs
after about 250 cc of fluid are aspirated.

High pump pressure

If the air exchange surgical function is on and the air exchange pump pressure exceeds the
current set point by more than 8 mmHg, this message is displayed in the status line.

High system pressure

If the main pressure pump pressure exceeds the upper limit, this message is displayed in
the status line. This is only a warning, no surgical functions will be disabled.

The nominal value for the main pump pressure is 2585 mmHg (50 psi). This message will
be displayed if the main pump pressure is above 2844 mmHg (55 psi).

High temperature xx (C

If the internal device temperature is 50 °C or higher, this message is displayed in the status
line. The current temperature is “xx”. This message is only a warning and no surgical
functions are effected. The temperature messages may be disabled in the “Display” menu.

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Status Line Messages

The temperature sensor monitors the internal temperature of the system and resides on
the analog board. The temperature sensor is a serial device that provides a properly for­matted response to a number of commands. If proper communication is not established,
any values read are not used. If the temperature sensor has a problem and reports a high
temperature condition, this message will be displayed. Under normal operating conditions,
the internal temperature of the system won’t reach this limit. Check for air flow restrictions
around the system. Especially near the main system fan and the air duct at the rear of the
system.

High vacuum level

If the aspiration surgical function is on and the 50cc vacuum level exceeds the desired level
by more than 20 mmHg, this message is displayed in the status line.

Hold for menu mode

While not in menu mode, holding the DISPLAY button for one second will enter menu
mode. If the button is released before entering menu mode, this message is displayed in
the status line.

Hold to change bulbs

When the illumination surgical function is turned off, this message will be displayed in the
status line. If the illumination surgical function is off, pressing and holding the illumination
on/off button can be used to switch to the backup bulb.

Hold to enter stage 1

When the stage button is pressed and held, if stage one will be entered when the stage
button is released this message will be displayed in the status line.

Hold to enter stage 2

When the stage button is pressed and held, if stage two will be entered when the stage
button is released this message will be displayed in the status line.

Hold to enter stage 3

When the stage button is pressed and held, if stage three will be entered when the stage
button is released this message will be displayed in the status line.

Hold to enter stage 4

When the stage button is pressed and held, if stage four will be entered when the stage
button is released this message will be displayed in the status line.

Hold to enter stage 5

When the stage button is pressed and held, if stage five will be entered when the stage
button is released this message will be displayed in the status line.

Hold to enter stage 6

When the stage button is pressed and held, if stage six will be entered when the stage
button is released this message will be displayed in the status line.

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Hold to enter stage 7

When the stage button is pressed and held, if stage seven will be entered when the stage
button is released this message will be displayed in the status line.

Hold to save stage 1

When the stage button is pressed and held, this message will be displayed in the status
line, prior to saving stage one. If the stage button is continued to be held, the current
system state will be saved.

Hold to save stage 2

When the stage button is pressed and held, this message will be displayed in the status
line, prior to saving stage two. If the stage button is continued to be held, the current sys­tem state will be saved.

Hold to save stage 3

When the stage button is pressed and held, this message will be displayed in the status
line, prior to saving stage three. If the stage button is continued to be held, the current
system state will be saved.

Hold to save stage 4

When the stage button is pressed and held, this message will be displayed in the status
line, prior to saving stage four. If the stage button is continued to be held, the current
system state will be saved.

Hold to save stage 5

When the stage button is pressed and held, this message will be displayed in the status
line, prior to saving stage five. If the stage button is continued to be held, the current sys­tem state will be saved.

Hold to save stage 6

When the stage button is pressed and held, this message will be displayed in the status
line, prior to saving stage six. If the stage button is continued to be held, the current sys­tem state will be saved.

Hold to save stage 7

When the stage button is pressed and held, this message will be displayed in the status
line, prior to saving stage seven. If the stage button is continued to be held, the current
system state will be saved.

Hold to start prime

When the aspiration valve button is pressed and released (and not held long enough to
start the prime cycle), this message will be displayed in the status line.

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Status Line Messages

LED/backlight adjust

While not in menu mode, the UP ARROW and DOWN ARROW can be used to adjust the
intensity of the LCD display backlight and the surgical function LEDs. This message will be
displayed as the intensity is adjusted.

Lift pedal to prime

To start a prime cycle the aspiration pinch valve button must be pressed and held for 1/2
second. If the foot pedal is down when a prime cycle is started, this message will be dis­played in the status line.

Lift pedal to reflux

If the foot pedal is depressed to a level that allows aspiration, reflux is disabled. If reflux is
attempted while aspirating, this message will be displayed in the status line.

Low air pump pressure

If the air exchange surgical function is on and the air exchange pump pressure is more
than 8 mmHg below the current set point, this message is displayed in the status line.

Low system pressure

If the main pressure pump pressure is below acceptable levels, this message is displayed
in the status line. When low system pressure is detected the vitrector, ultrasound and
aspiration surgical functions will be disabled.

When the vitrector is used at high cut rates the volume of air consumed may cause this
message to be displayed. The nominal value for the main pump pressure is 2585 mmHg
(50 psi). This message will be displayed if the main pump pressure is below 2172 mmHg
(42 psi). When the system is operating properly, the system pressure won’t drop this low.
Improper adjustment of the vitrector pressure regulator (too high), air leaks, clogged air
filter, and poor compressor performance could all cause this problem.

Low temperature (xx (C

If the internal device temperature is 10 °C or lower, this message is displayed in the status
line. The current temperature is “xx” and when below zero will be preceded by a minus
sign (-). This message is only a warning and no surgical functions are effected. The tem­perature messages may be disabled in the “Display” menu.

The temperature sensor monitors the internal temperature of the system and resides on
the analog board. The temperature sensor is a serial device that provides a properly for­matted response to a number of commands. If proper communication is not established,
any values read are not used. If the temperature sensor has a problem and reports a low
temperature condition, this message may be displayed.

Low vacuum level

If the vacuum pump vacuum is below acceptable levels, this message is displayed in the
status line. When this condition occurs aspiration is not disabled, however, not all levels of

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vacuum may be obtainable. This message may appear along with the “Check cassette
tubing” and “Please lock cassette” messages.

If the 500cc vacuum level is below the aspiration surgical function’s maximum vacuum
setting or is below 400 mmHg, then this message is displayed. This message indicates
that the 500cc sensors output voltage appears to be low. The 500cc sensors output volt­age is read using an A/D converter. This voltage is then reduced by the voltage present
when the sensors port is at atmosphere. The result represents the vacuum level present
on the sensors port. If the voltage read indicates a low vacuum level the A/D converter
may have a problem or the sensor may have a problem. A leak in the vacuum system may
also cause this message. When the aspiration surgical function is on and the foot pedal is
in the rest position, an attempt is made to keep the 50cc chamber vacuum level at 1
mmHg. If tubing is not present and connected properly, the vacuum level of the 500cc
chamber may be reduced to below an acceptable value.

Main +12 fuse problem

The Main +12 fuse on the analog board has opened. This fuse is resettable, powering the
VitMan off and then on may clear the problem.

This message indicates that the +12Vdc-Main power is not present. In addition to the fuse
opening, this message could be caused by a problem with the +12 volt output of the power
supply.

Minimum cut rate:xxxx

When the vitrector surgical function enters posterior or anterior linear rate mode this mes­sage will display the minimum cut rate, where “xxxx” is the cut rate.

No cassette present

If the aspiration cassette is not detected, this message will be displayed in the status line.
While the aspiration cassette is missing, the vacuum pump is disabled and the aspiration
cassette illumination is reduced.

The system uses the fluid level sensor array on the analog electronics board to detect the
presence of a cassette. The 500cc chamber prism causes light to be reflected back to the
sensor array. If the cassette is extremely full of fluid, the sensor array will fail to “see” the
prism.

No diskette present

Once a minute the trace data is written to the floppy disk. If no floppy disk is detected in
the disk drive, this message is displayed in the status line.

No foot pedal present

If the foot pedal cannot be detected, this message is displayed in the status line. Without
the foot pedal, many surgical functions are inoperable. Only the air exchange and illumina­tion will function without the foot pedal.

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Status line messages

Status Line Messages

The foot pedal presence is sensed through the cable connected to the foot pedal. Pin 1 is
shorted to pin 4 internal to the foot pedal. The condition of the foot pedal, as measured by
the system software, can be viewed using the “Calibrate Foot Pedal” command under
“Calibration Routines” under the “Service Menu”

No handpiece present

If the ultrasound surgical function is on and the handpiece is not present, this message will
be displayed in the status line.

The handpiece presence is sensed through the cable connector. 2 pins are shorted internal
to the cable connector. A connection is made between the ultrasound output connector on
the front panel and the CPU electronics board to enable the system to measure for the
presence of the handpiece.

No keyboard heartbeat

If the keyboard encoder does not answer a heartbeat request, this message will be dis­played in the status line. The heartbeat request is made once every second. If the heart­beat request is unanswered, the keyboard encoder is reset.

No stage selected

When the stage button is pressed and released, the current stage will be displayed. If no
stage was selected, this message will be displayed in the status line.

No stages enabled

If no stages (other than the current stage) are enabled, and the stage button is pressed
and held, this message will be displayed in the status line. This indicates that no stage is
available as the next stage

No ultrasound present

If the ultrasound option is not present when the ultrasound on/off button is pressed, this
message will be displayed in the status line.

The ultrasound electronics has a serial EEPROM that holds the serial number and other
parameters associated with the ultrasound surgical function. If the ultrasound data cable is
disconnected, if power is not present on the ultrasound board or if the serial EEPROM has
a problem, the serial EEPROM will not be detected. If the serial EEPROM is not detected
or if the contents are invalid, this message will be displayed.

Now saving stage 1

When the stage button is pressed and held, this message will be displayed in the status
line, when the current machine state is saved in stage one.

Now saving stage 2

When the stage button is pressed and held, this message will be displayed in the status
line, when the current machine state is saved in stage two.

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Now saving stage 3

When the stage button is pressed and held, this message will be displayed in the status
line, when the current machine state is saved in stage three.

Now saving stage 4

When the stage button is pressed and held, this message will be displayed in the status
line, when the current machine state is saved in stage four.

Now saving stage 5

When the stage button is pressed and held, this message will be displayed in the status
line, when the current machine state is saved in stage five.

Now saving stage 6

When the stage button is pressed and held, this message will be displayed in the status
line, when the current machine state is saved in stage six.

Now saving stage 7

When the stage button is pressed and held, this message will be displayed in the status
line, when the current machine state is saved in stage seven.

Over temperature

If the internal device temperature is 53 °C or higher, this message is displayed in the status
line. This message is only a warning and no surgical functions are effected.

The temperature sensor monitors the internal temperature of the system and resides on
the analog board. The temperature sensor is a serial device that provides a properly for­matted response to a number of commands. If proper communication is not established,
any values read are not used. If the temperature sensor has a problem and reports a high
temperature condition, this message may be displayed. Under normal operating conditions,
the internal temperature of the system won’t reach this limit. Check for airflow restrictions
around the system. Especially near the main system fan and the air duct at the rear of the
system.

Overpressure detected

If the current eye pressure exceeds the warning pressure limit, this message will be dis­played in the status line. The warning pressure level may be adjusted using the “Air Ex­change Values” menu in the “Current Settings” menu.

Pedal fuse problem

The foot pedal fuse on the CPU board has opened. This fuse is resettable, powering the
VitMan off and then on may clear the problem.

This message indicates that the foot pedal power is not present. The foot pedal power is a
fused version the CPU boards +5 volt power.

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Status Line Messages

Please lock cassette

If the aspiration cassette is present and the vacuum level is below acceptable limits, this
message will be displayed in the status line. This message may appear along with the
“Low vacuum level” and “Check cassette tubing” messages.

This message will be displayed if the 500cc vacuum level is below 50 mmHg, while the
cassette is present. A leak in the vacuum system, a problem with the 500cc vacuum sen­sor or a problem with the A/D converter, may also cause this message.

Please tune handpiece

If the ultrasound surgical function is on and the handpiece is not in tune, this message will
be displayed in the status line. If the handpiece is removed and replaced, it must be tuned.
If the power detection logic determines that the handpiece is out of tune, the probe should
be retuned.

Posterior Aspiration

This message indicates that the aspiration surgical function has entered posterior aspira­tion mode, using the aspiration on/off button.

Posterior Frag

This message indicates that the ultrasound surgical function has entered posterior frag
mode, using the ultrasound on/off button.

Posterior Linear Rate

This message indicates that the vitrector surgical function has entered posterior linear cut
rate mode, using the vitrector on/off button.

Posterior Vitrectomy

This message indicates that the vitrector surgical function has entered posterior vitrectomy
mode, using the vitrector on/off button.

Power fail detected

If the main power supply detects a problem with the mains input, this message will be
displayed in the status line. When this condition is detected, disk activity is inhibited for five
seconds.

The system power supply provides an AC LOW indication. The AC LOW indication is used
to generate a non-maskable interrupt (NMI) on the CPU.

Pressure pump hours

The run time on the main pressure pump has exceeded the maximum limit. The pneumat­ics module needs to be serviced. The “Display Pump Hours” command, found in the “Ser­vice Pneumatics” menu of the “Service Menu”, can be used to display the current pressure
pump hours.

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If the pressure pump hours exceed 2000, this message will be displayed. While the vitrec­tor surgical function is on this message is disabled.

Prime cycle aborted

This message indicates that the aspiration prime cycle was aborted. Any foot pedal activ­ity, or pressing the aspiration valve button, will abort a prime cycle.

Prime level xxx mmHg

While a prime cycle is in progress, the aspiration up and down buttons can be used to
change the aspiration level. This message will be displayed when a change is made to the
prime aspiration level. The aspiration prime level is “xxx”.

Re-position cassette

If the cassette level detection logic determines that the aspiration cassette is not properly
aligned, this message will be displayed in the status line. This generally indicates that the
cassette is pushed into the cassette chamber prior to rotating the knob into the lock posi­tion. To correct the problem, rotate the knob to the unlocked position then back to the
locked position without pressing on the cassette. The “Cassette position bad” and “Use
locking knob only” messages will also be displayed.

Replace cassette

If a high fluid level is detected in the small chamber of the aspiration cassette, this mes­sage will be displayed in the status line. If this condition is suspected to have been de­tected in error, remove the aspiration cassette, wait for one second, and reinsert the aspira­tion cassette. If the condition persists, replace the aspiration cassette. The “Cassette
problem” message will also be displayed.

Reverse flow detected

If the air exchange surgical function is on and the pressure on the air exchange port ex­ceeds the desired pressure level then this message will be displayed in the status line.
This generally indicates that the three way valve is incorrectly positioned to apply the saline
solution to the air exchange port rather than to the infusion cannula. When this condition is
detected, the air exchange valve is closed in an attempt to reduce fluid flow into the
VitMan.

Service pneumatics

If the time on the pneumatics module has exceeded the maximum limit, when the VitMan is
powered up this message will be displayed in the status line. The “Display Pump Hours”
command, found in the “Service Pneumatics” menu of the “Service Menu”, can be used to
display the current pressure pump hours.

If the pressure pump hours exceed 1000, this message will be displayed.

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Status Line Messages

Service required

This message indicates that a serious problem was detected and repair of the Syntec
VitMan is required. The message will be accompanied by other status line messages that
will indicate the problem area.

Air exchange problem - If the air exchange valve is open, the pressure difference between
the eye pressure sensor and the air exchange pump pressure sensor should be less than
15 mmHg (for low flow rate conditions the pressure difference will be close to zero mmHg).
If a pressure difference of 15 mmHg or greater is detected, this message will be displayed.

Air pump problem - At power-up, a test is made of the ability of the air exchange pump to
generate pressure. If pressure was not detected, this message will be displayed when the
air exchange surgical function is enabled.

Shutdown at 55°C

If the internal device temperature is 53 °C or higher, but less than 55 °C, this message is
displayed in the status line.

The temperature sensor monitors the internal temperature of the system and resides on
the analog board. The temperature sensor is a serial device that provides a properly for­matted response to a number of commands. If proper communication is not established,
any values read are not used. If the temperature sensor has a problem and reports a high
temperature condition, this message may be displayed. Under normal operating conditions,
the internal temperature of the system won’t reach this limit. Check for airflow restrictions
around the system. Especially near the main system fan and the air duct at the rear of the
system.

Stabilizing...

This message indicates that a hardware problem was detected while waiting for the pres­sure sensors to thermally stabilize. If this message is present, the VitMan will not function.
If this message should appear, power cycle the device.

Stage 1 selected

When the stage button is pressed and held, if stage one will be entered when the stage
button is released the message “Hold to enter stage 1” will be displayed. Releasing the
stage button will cause stage one to be entered and this message to be displayed in the
status line.

Stage 2 selected

When the stage button is pressed and held, if stage two will be entered when the stage
button is released the message “Hold to enter stage 2” will be displayed. Releasing the
stage button will cause stage two to be entered and this message to be displayed in the
status line.

Status line messages

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Status Line Messages

Stage 3 selected

When the stage button is pressed and held, if stage three will be entered when the stage
button is released the message “Hold to enter stage 3” will be displayed. Releasing the
stage button will cause stage three to be entered and this message to be displayed in the
status line.

Stage 4 selected

When the stage button is pressed and held, if stage four will be entered when the stage
button is released the message “Hold to enter stage 4” will be displayed. Releasing the
stage button will cause stage four to be entered and this message to be displayed in the
status line.

Stage 5 selected

When the stage button is pressed and held, if stage five will be entered when the stage
button is released the message “Hold to enter stage 5” will be displayed. Releasing the
stage button will cause stage five to be entered and this message to be displayed in the
status line.

Stage 6 selected

When the stage button is pressed and held, if stage six will be entered when the stage
button is released the message “Hold to enter stage 6” will be displayed. Releasing the
stage button will cause stage six to be entered and this message to be displayed in the
status line.

Stage 7 selected

When the stage button is pressed and held, if stage seven will be entered when the stage
button is released the message “Hold to enter stage 7” will be displayed. Releasing the
stage button will cause stage seven to be entered and this message to be displayed in the
status line.

Temp sensor problem

If the temperature sensor is undetectable, this message is displayed in the status line.
Powering the VitMan off and then on may clear the problem.

The temperature sensor monitors the internal temperature of the system and resides on
the analog board. The temperature sensor is a serial device that provides a properly for­matted response to a number of commands. If proper communication is not established,
any values read are not used. If the temperature sensor has a problem, this message will
be displayed.

Threshold is xx mmHg

The aspiration threshold allows the user to specify the vacuum level required in the 50cc
chamber, before the aspiration valve is opened. If aspiration is prevented by the current
threshold setting, this message is displayed in the status line, where “xx” is the current
threshold value. The aspiration threshold may be adjusted using the “Aspiration Threshold”
command, found in the “Aspiration Values” menu of the “Current Settings” menu.

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Status line messages

Status Line Messages

Tuning aborted

If the ultrasound handpiece tuning cycle is terminated by turning off the ultrasound surgical
function or by foot pedal activity, this message is displayed in the status line.

Tuning handpiece

While the ultrasound handpiece is being tuned, this message will be displayed in the status
line.

Tuning not allowed

If aspiration is off or in alarm, tuning of the ultrasound handpiece is not allowed. If an
attempt to tune the ultrasound handpiece is made, this message will be displayed in the
status line.

Tuning unsuccessful

If the ultrasound handpiece tuning cycle is unsuccessful, this message will be displayed in
the status line.

Ultrasound fuse open

The ultrasound fuse on the analog board has opened. This fuse is resettable, powering the
VitMan off and then on may clear the problem.

This message indicates that the +24 volt power is not present on the ultrasound electron­ics. In addition to the fuse opening, this message could be caused by a problem with the
+24 volt output of the power supply.

Urgent system problem

If a communications problem is detected between the CPU board and the analog board,
this message will be displayed in the status line. This is a serious problem that requires
attention before use. Powering the VitMan off and then on may clear the problem.

The A/D converter, present on the analog board, provides several constant values that are
used to determine the quality of information and integrity of the communications path. If
these values are found to be in error, this message will be displayed. The A/D converter is
the primary source of information on the status of the system. The quality of the informa­tion provided is vital to the proper operation of the system.

Use locking knob only

If the cassette level detection logic determines that the aspiration cassette is not properly
aligned, this message will be displayed in the status line. This generally indicates that the
cassette is pushed into the cassette chamber prior to rotating the knob into the lock posi­tion. To correct the problem, rotate the knob to the unlocked position then back to the
locked position without pressing on the cassette. The “Cassette position bad” and “Re­position cassette” messages will also be displayed.

Status line messages

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Status Line Messages

Vacuum fuse problem

The vacuum pump fuse on the analog board has opened. This fuse is resettable, powering
the VitMan off and then on may clear the problem.

This message indicates that the vacuum pump power is not present. In addition to the fuse
opening, this message could be caused by a problem with the +12 volt power.

Vacuum pump hours

The run time on the vacuum pump has exceeded the maximum limit. The pneumatics
module needs to be serviced. The “Display Pump Hours” command, found in the “Service
Pneumatics” menu of the “Service Menu”, can be used to display the current vacuum pump
hours.

Valve fuse problem

The valve fuse on the analog board has opened. This fuse is resettable, powering the
VitMan off and then on may clear the problem.

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Status line messages

System Test Procedures

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System Test Procedures

System Operation Check

The

Syntec

functions of a vitrectomy system. This procedure confirms that the system is assembled
correctly, and that no major system malfunctions exist. It does not verify calibration of the
internal pressure sensors or of internal operating pressures. Various circumstances require
verification of correct system operation:

In order to evaluate the system, certain items are required:

VitMan includes various subsystems that operate together to provide the

System installation
Complaint that system isn’t operating properly
After maintenance on the system
After upgrade of system hardware or software

VitMan system
Power cord
System foot pedal
System owner’s manual
Aspiration cassette
Vitrector
Air Exchange tubing w/ air exchange filter
Infusion cannula
Endoilluminator
Ultrasound handpiece (if appropriate)
Ultrasound needle (need not be new)
Beaker or bowl of water, at least 350cc

An assumption is made in this procedure that the operator of the system, is familiar with
system operation and setup. Refer to the owner’s manual for information on how to operate
the system. Operation of the system’s menus is required to verify system operation. The
owner’s manual includes comprehensive information on the operation of the menus. This
procedure will refer to a specific series of menu selections separated by a \. For example
Values \ Current A/D Values signifies selecting Values from the Main menu, then selecting
Current A/D Values from the Values menu. A complete listing of the menu selections will be
given from the main menu, even if a shorter route from the current screen could be taken in
the menu tree. This allows the operator to access the correct menu screen without follow­ing this procedure step by step. Perform the following steps. If the system does not react
as described, refer to the troubleshooting procedure for a remedy.

1. Connect the power cord and foot pedal to the system. Turn system on.

2. Install the aspiration cassette. Connect the vitrector (both pressure and aspiration
tubes, route the asp. tube correctly), endoilluminator, air exchange tubing, and infu­sion cannula..

3. Check the system light source.
a. Ensure that all other functions are off.
b. Remove both lamps from the light source. Close the light source drawer. Don’t

touch the lamps with fingers. Use a clean cloth or gloves. Refer to the light

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System operation check

System Test Procedures

source lamp replacement procedure for more information.
c. Turn the light source dimming knob fully clockwise. Turn the light source on. The

system display should indicate that both bulbs have failed. Turn the light source
off.

d. Install a lamp in the “B” socket (right socket). Close the light source drawer. Turn

the light source on. Light should radiate from the endoilluminator after a few
seconds for the bulb warm-up. Turn the light source off. The system display
should indicate that the “A” bulb has failed.

e. Wait approximately one minute for the lamp to cool. If the light source was turned

on for more than just a few seconds it will take longer for it to cool. Remove the
lamp from the “B” socket and install it in the “A” socket . (Note that the system
will automatically move the lamp sockets into the “A” position when the light
source drawer is opened. There could be a delay of a couple of seconds for this
to happen after the drawer is opened.) Close the light source drawer. Turn the
light source on. Light should radiate from the endoilluminator after a few seconds
for the bulb warm-up. Turn the light source off. The system display should indi­cate that the “B” bulb has failed.

f. Wait approximately one minute for the lamp to cool. Install the other lamp into

the “B” socket. Close the light source drawer.

g. Turn the light source on. The system display should indicate that the “A” bulb is

on. It should not indicate that either lamp has failed. Observe the light radiating
from the endoilluminator by projecting onto a surface from approximately 5cm. It
should appear very bright white. Turn the dimming knob counterclockwise. The
endoilluminator output should start to dim after some rotation of the knob. The
output should stay substantially unchanged, except for intensity, through most of
the rotation of the dimmer knob. Repeat this test for the other two connector
outputs. (Don’t forget to turn the dimmer back up.)

h. Turn the light source off. Press and hold the light source on/off button (This will

initiate a change in the illuminated lamp from A to B. Release the button after the
light source output has started to radiate light then has turned off again.). Ob­serve the light radiating from the endoilluminator by projecting onto a surface
from approximately 5cm. It should appear very bright white. Turn the dimming
knob counterclockwise. The endoilluminator output should start to dim after
some rotation of the knob. The output should stay substantially unchanged,
except for intensity, through most of the rotation of the dimmer knob. Repeat this
test for the other two connector outputs.

i. Turn the light source off.

4. Check aspiration function. Note that whenever an aspiration cassette is used to aspi­rate fluids (especially a cassette that may have been abused, as is usually the case
with test components), it is advisable to ensure that the float valve in the smaller
chamber is operating correctly. Fluid should start transferring from the smaller cham­ber to the larger chamber when the fluid level reaches approximately half way up the
float. If the fluid goes more than 3/4 up the float, then the cassette should be consid­ered faulty. Use of a faulty cassette could result in aspiration of fluids into the system.
a. Immerse the vitrector tip in water.
b. Turn aspiration function on. Enter anterior aspiration mode. The status LED

System operation check

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System Test Procedures

should turn green.
c. Adjust the maximum aspiration to 500 (or the system max).
d. Enter into the system menu, go to Values \ Current A/D Values.
e. The 500cc value should read greater than 550. The 50cc value should read 5

maximum.

f. Depress the foot pedal until the Pedal value is slightly more than the activity

threshold. The activity threshold default is 10%. It can be found under Current
Settings \ Pedal Thresholds \ Activity Threshold. The irrigation pinch valve
should open. Release the foot pedal. The irrigation pinch valve should close.

g. Depress the foot pedal until the Pedal value is slightly more than the irrigate to

aspirate threshold. The irrigate to aspirate threshold default is 10%. It can be
found under Current Settings \ Pedal Thresholds \ Irrigate To Aspirate. The
aspiration pinch valve should open. Release the foot pedal. The aspiration pinch
valve should close. Note that if the activity threshold is at 10% and the irrigate to
aspirate threshold is at 10% then the aspiration pinch valve should open after
20%. To calculate the position that the aspiration pinch valve opens, the two
thresholds are added together in anterior surgical modes . Note also that the
aspiration threshold setting under Current Settings \ Aspiration Values can
also affect the opening of the aspiration pinch valve. The default is 0 mmHg. The
aspiration pinch valve will not open until the vacuum level in the 50cc (smaller)
chamber of the cassette has reached the aspiration threshold setting, regardless
of threshold adjustments for the foot pedal.

h. Rotate the foot pedal to activate reflux. The direction (left or right) for reflux is

determined under Current Settings \ Aspiration Values. The reflux valve
should respond based on the setting under Current Settings \ Aspiration
Values. Continuous Reflux mode causes the reflux valve to remain closed for
the entire time that the foot pedal is rotated. Timed Reflux causes the reflux
valve to close (after the foot pedal is rotated) for the time determined under
Current Settings \ Aspiration Values \ Reflux Hold Time.

i. Rapidly depress the foot pedal fully. The 50cc value should quickly (less than 1

second) reach the maximum aspiration adjustment. It is normal for the value to
over shoot up to 10 on very high maximum aspiration settings. The value should
stabilize to within 2 of the maximum aspiration setting in a couple of seconds.
The aspiration function should not go into alarm, as would be indicated by the
status LED turning red.

j. Adjust the maximum aspiration setting to 250 (or 1/2 of system max). Repeat

step 4.i.

k. Adjust the maximum aspiration setting to 50 (or 1/10 of system max). Repeat

step 4.i. The value over shoot should be less than 5.
l. Return to the system operating display (By pushing the display button).
m. Adjust the maximum aspiration setting to 250 (or 1/2 of system max). Aspirate

fluid into the aspiration cassette. If the cassette icon is enabled in the Display

menu, then it should graphically indicate an increase in fluid by “filling up” as the

fluid level raises in the larger chamber of the aspiration cassette. At approxi-

mately 250cc of fluid in the larger chamber of the aspiration cassette an alarm

should sound (If the speaker is enabled under the Audio Services menu.), and

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System operation check

System Test Procedures

a status line message should indicate High cassette level . At approximately 300cc of

fluid in the larger chamber of the aspiration cassette an alarm should sound, and
a status line message should indicate Cassette full . At approximately 325cc of
fluid in the larger chamber of the aspiration cassette an alarm should sound, and
a status line message should indicate Cassette over full. Aspiration should fail
to function any further until the over full cassette condition is removed.

n. Remove and empty fluid from the aspiration cassette. Replace the aspiration

cassette.

5. Check vitrector function.
a. Turn the vitrector function on. Turn the aspiration function off.
b. Adjust the cut rate to 1000 cpm
c. Fully depress the foot pedal. Rotate the foot pedal to activate the vitrector. The

direction (left or right) for cutting is determined under Current Settings \ Aspira-
tion Values, and is opposite the side reflux is set to. For example if reflux is on
the left then vitrector will be on the right. Refer to the owner’s manual under the
description of the menu item Current Settings \ Vitrector Values for more
information on vitrector function options. The system should be able to drive the
vitrector indefinitely at 1000 cpm without going into alarm (the status LED turns
red if the function goes into alarm). Observation of the cutting port on the vitrec­tor should indicate that the internal needle is fully closing off the port as the
vitrector operates.

d. Turn the vitrector function off.

6. Check ultrasound function (if the ultrasound option is present).
a. Turn the ultrasound function on. The status LED should turn red. The display

status line should indicate No handpiece present.

b. Connect the ultrasound handpiece. Install the ultrasound needle. The status LED

should remain red. The display status line should now indicate Please tune

handpiece.
c. Tune the handpiece. The tune should be successful.
d. Set the ultrasound power to 50%.
e. Fully depress the foot pedal. Rotate the foot pedal to activate ultrasound. The

direction (left or right) for cutting is the same as for the vitrector. Power should be

applied to the ultrasound needle. Apply the ultrasound needle tip to a test sur-

face (raw macaroni is acceptable). Noticeable needle activity should be observed

against the test surface.
f. Turn the ultrasound function off.

7. Check air exchange function.
a. Turn the air exchange function on.
b. Adjust the air exchange output to 100. The function should be able to maintain at

least 80 with the infusion cannula open to atmosphere.

c. Adjust the output to 50. The output should stabilize to 50 quickly. Pinch the tube

connecting the infusion cannula. The output should over shoot the setting mo­mentarily, then settle back to 50. Release the tube. The output should under
shoot the setting momentarily then settle back to 50.

System operation check

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System Test Procedures

System Trouble Shooting Chart

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orezottesegnahcxEriA

deknikgnibuT

riagnikcolbevlavpotsyaw-3

2retpahCMO

EGNAHCXERIAEGNAHCXERIA

EGNAHCXERIAEGNAHCXERIA

EGNAHCXERIA

2retpahCMO

EGNAHCXERIAEGNAHCXERIA

EGNAHCXERIAEGNAHCXERIA

EGNAHCXERIA

2retpahCMO

EGNAHCXERIAEGNAHCXERIA

EGNAHCXERIAEGNAHCXERIA

EGNAHCXERIA

neercssutatskcehC.deneposah301FesuFe.41ST

eriwnekorb/rosserpmocegnahcxeriAevitcefeDb.41ST

sutatskcehC.sevlavotrewopon/nepo001F

neercs

a.51ST

eriwnekorb/evlavlortnochcnipevitcefeDc.41ST

enihcamotlanretnikaelriAe.41ST

.draobscinortcelegolanAevitcefeDb.41ST

sliaFksiD).eerfrorreebTSUM(.etteksidevitcefeDe.61-d.61ST

detcetorpetirWc.61ST

sutatskcehC)yppolfotCDV5+(.nepo211FesuF

neercs

neewtebelbaclortnoc/detaesyllufton/evitcefeD

draobscinortceleUPCdnayppolf

b.61ST
f.61ST

elbacrewop/detaesyllufton/evitcefeDf.61ST

scinortcelegolanAnorotalugerCDV5+evitcefeD

draob

a.61ST

evirDyppolFevitcefeDf.61ST

Symptom troubleshooting chart

page 64

Syntec

VitMan

ãã

ã

ãã

System Test Procedures

:motpmyS:melborPelbissoP:otrefeR

UPCevitcefeDf.61ST

2retpahCMO

LENAPKCABLENAPKCAB

LENAPKCABLENAPKCAB

sliaFladePtinuotnideggulptonladePtooF

sutatskcehC).ladepotCDV5+(.nepo2FesuF

.neercs

elbac/ladeptoofevitcefeDc.11-a.11ST

toHooT c.71-a.71ST

ysioN e.81-a.81ST

LENAPKCAB

&SNOITCENNOC

SLORTNOC

a.11ST

Syntec

VitMan

ãã

ã

ãã

page 65

Symptom troubleshooting chart

System Test Procedures

Trouble Shooting Steps

1. Main Power supply checkout

petSerudecorPelanoitaRsetoN

ytirojamehtrofdesusiylppusCDV21+ehT

CDehT.naMtiVehtnisnoitcnufehtfo

ehtmorfyltceridCDV21+ehtsekatssenrah

potehtevomeR

.srevocmottobdna
stinotinuehtecalP

ehthtiw(edistfel

)hgihecruosthgil

a.1

b.1

c.1

golanAeht

otretemtlovaesU
CDV21+ehtyfirev

notneserpegatlov

ehtfotuptuoeht

ylppusrewopniam

tinuehthtiw

.puderewop

siCDV21+ehtfI

,CDV5.11+woleb

niamehttcennocsid

morfssenrahCD

.draobscinortcele

ehterusaeM

.niagaCDV21+

ehterusaeM

egatlovCDV42+

ehtnotneserp

niamehtfotuptuo

.ylppusrewop

.scinortcele

.tuptuoevitcefed

.ylppusrewop

.sesufetarapes

.tuptuoevitcefed

golanAehtotylppusrewopniam

aivdetubirtsidsitierehwdraobscinortcele

dna,spmup,snafehtotsesufetarapes

yrt,noitacificepsfotuosiCDV21+ehtfI

ehtmorfssenrahCDehtgnitcennocsid

wollalliwsihT.draobscinortcelegolanA

narehtieotmelborpehtfonoitalosi

aroylppusrewopehtnodaolevissecxe

ehtkcehc,tnesbasiCDV21+ehtfI

sioottifI.tneserpsitifieesotCDV42+

deliafsahrehtieylppusrewopeht,tnesba

.tupniCAgniviecertonsiro

gniylppusfoelbapacsiylppusrewopehtfI

ssenrahCDehthtiwCDV21+tcerroca

ylppusrewopniamehtrehtie,detcennocsid

CDehtnitrohsasierehtrodeliafsah

lavomeRylppuSrewoPehtesU.ssenrah

CDehtotsseccaniagoterudecorp

egamadrofylhguorohttikcehC.ssenrah

niamehtrossenrahehtecalperrehtiedna

dnaW002tadetarsiylppusCDV42+ehT

sitI.naMtiVehtnisnoitcnufruofrofdesusi

,)W051(noitanimullirofecruosrewopeht

dna,)W3(egnahcxeria,)W54(dnuosartlu

ssenrahCDehT.)W1(rekaepslanretnieht

golanAehtotyltceridCDV42+ehtsekat

aivdetubirtsidsitierehwdraobscinortcele

yrt,noitacificepsfotuosiCDV42+ehtfI

dnuosartlUgolanAehtgnitcennocsid

scinortcelegolanAehtmorfelbacrewop

lliwsihT.ssenrahCDehtro/dnadraob

narehtieotmelborpehtfonoitalosiwolla

aroylppusrewopehtnodaolevissecxe

CDV21+ehT

erusaemdluohs

5.11neewteb
.CDV5.21dna

CDV42+ehT

erusaemdluohs

dna32neewteb

.CDV52

Troubleshooting steps

page 66

Syntec

VitMan

ãã

ã

ãã

System Test Procedures

petSerudecorPelanoitaRsetoN

siCDV42+ehtfI
,CDV32+woleb

niamehttcennocsid

d.1

morfssenrahCD

golanAeht

.draobscinortcele

ehterusaeM

.niagaCDV42+

.ylppusrewop

tupnitahtyfireV

tatneserpsirewop

slanimrettuptuoeht

yrtnerewopehtfo

ylluferacybeludom

raerehtgnisaeler

e.1

erusaemdnalenap

ssorcaegatloveht

yrtnerewopeht

ehthtiwslanimret

sihT.nodenruttinu

dluohsegatlov

.tupnienilehthctam

petssihtmrofreP

onsierehtfiYLNO

ondnaCDV21+

ehtmorfCDV42+

rewopmetsys

CDehthtiwylppus

ssenrahrewop

morfdetcennocsid

golanAeht

.draobscinortcele

f.1

CAnaesU

yfirevotretemtlov

yltcerrocsiCAtaht

ehtotdetcennoc

sihT.ylppusrewop

.krowotdeificeps

ehttahteriuqerlliw

ylppusrewop

ebylbmessa

.devomer

CDehtotsseccaniagoterudecorp

.retlifenilrewopehtnineporo

gniylppusfoelbapacsiylppusrewopehtfI

ssenrahCDehthtiwCDV42+tcerroca

ylppusrewopniamehtrehtie,detcennocsid

CDehtnitrohsasierehtrodeliafsah

lavomeRylppuSrewoPehtesU.ssenrah

egamadrofylhguorohttikcehC.ssenrah

niamehtrossenrahehtecalperrehtiedna

nisnoitcennoclanretnilareveseraerehT

erehtylekilnusitI.eludomyrtnerewopeht

ehtfokcehcatubnepolanretninaeblliw

lliwslanimrettuptuoehtnotneserpegatlov

.stsixemelborpyrtnerewoponyfirev

htapCAehtniretlifenilrewopasierehT

dnahctiws/esufyrtnerewopehtneewteb

rewopfokcehcehT.ylppusrewopeht

rewopehtfoslanimrettupniehttatneserp

eriwnepoonsierehttahtyfirevlliwylppus

021001rehtieseriuqerylppusrewopehT

CA.zH06/05CAV042002roCAV

tonerasegnaresehtedistuosegatlov

ehttaCAehT

ylppusrewop

slanimrettupni

hctamdluohs

CAnwonkeht

.enil

Syntec

VitMan

ãã

ã

ãã

page 67

Troubleshooting steps

System Test Procedures

petSerudecorPelanoitaRsetoN

dnaCDV21+htobfI

eraCDV42+

tahtyfirev,tneserp

erasegatlovlla

golanAehtgnihcaer

g.1

draobscinortcele

gnitcennocsidyb

ssenrahrewopeht

golanAehtmorf

draobscinortcele

ehtgniyfirevdna

.tneserpsegatlov

2. Main fuse check

petSerudecorPelanoitaRsetoN

tonmetsysafoesuacylekiltsomehT

esufehtnepoyrP

a.2

ehtkcehcdnarevoc

.esuf

nometsysehtgninnurnehtdna)A3.6(

esufsihT.esufyrtneniamehteblliwgninnur

rotnerruchsurnievissecxenowolbnac

noitarepoCAV052rofdesuftinuehtgnivah

.)dedeenA01(CAV021

nipehT

sitnemngissa

nidetsil

:AxidneppA

rociVgolanA

.elbaCrewoP

3. Internal DC Voltage Check

petSerudecorPelanoitaRsetoN

potehtevomeR

.srevocmottobdna

ehttcennocsiD

gninnurelbacrewop

ehtneewteb

a.3

ehtdnadnuosartlU

scinortcelegolanA

ylluferaC.draob

llaerusaem

.elbac

yfirevotsegatlov

-CDV21+setarenegretrevnocCD-CDehT

nip
ehtnoesurofCDV5+dna,A-CDV21-,A
scinortcelednuosartlUdna,golanA,UPC

erasegatlovesehtfoeerhtllA.sdraob

rewopdnuosartlUgolanAehtnotneserp

golanA

rotcennocehT

stnemngissa

nidetsilera

:AxidneppA

dnuosartlU

.elbaCrewoP

.tneserperayeht

ehttcennocsiD

gninnurelbacrewop

UPCehtneewteb

golanAehtdna

.draobscinortcele

b.3

erusaemylluferaC

otCDV22eht

sititahtyfirev

ehtnotneserp

siylppussihT.knalbeblliwyalpsid

ehtsetaercretrevnocCD-CDlanoitiddanA

ehtotsaibedivorpotdedeenCDV22

eht,gnissimsiylppussihtfI.yalpsidDCL

ehtfo7nipaivUPCehtotdetcennoc

tneserptonsiCDV22ehtfI.elbacrewop

.evitcefedsidraobscinortcelegolanAeht

scinortcelegolanA

.lanimretdraob

Troubleshooting steps

page 68

Syntec

VitMan

ãã

ã

ãã

System Test Procedures

petSerudecorPelanoitaRsetoN

ehttcennoceR

dnaelbacrewop

llaehtyfirev

erasegatlov

UPCehttatneserp

.draobscinortcele

ehterusaeM

ehtnosegatlov

ehtfoedisetisoppo

c.3

d.3

e.3

f.3

ehtmorfUPC

roF.rotcennoc

seriweht,ecnerefer

ehtevahsroloc

:gninaemgniwollof

dnuorG:kcalB

CDV5+:deR

CDV21+:teloiV

CDV21-:yerG

CDV22-:wolleY

siCDV22ehtfI

ylluferac,gnissim

rewopehtevomer

rotcennocssenrah

UPCehtmorf

draobscinortcele

erusaemdna

wolleyehtneewteb

.seriwkcalbdna

ehtrofkcehC

foecneserp

ehtnoCDV21+

.311Ffosedishtob

.draob

siCDV21+fI

yamereht,gnissim

ehtnimelborpaeb

.ssenrahrewop

ylekilsisegatlovehtfoenofoeruliaF

rewopehtnieriwnekorbaoteud

erewsesufylppusehtecnisssenrah

ehtfI.a.3petsnidekcehcyltceridni

sawtinehwgnissimwonsiCDV22

arehtiesiereht,b.3petsnitneserp

roeriwwolleynekorbahtiwmelborp
gnidaolsidraobscinortceleUPCeht

.ylppusehtnwod

ehtfienimreteddluohskcehcsihT

ehtfodneUPCehttastsixeCDV22

eht,tneserpsiCDV22ehtfI.elbac

evitcefedsiUPC

ro,A-CDV21-,A-CDV21+ehtfI

aelbissopsitignissimeraCDV5+

otretemtlovaesU.nwolbsahesuf

noCDV21+foecneserpehtrofkcehc

retrevnocCD-CDehtfoedisecruoseht

dluowesufsihtnoneponA.311Fesuf

scinortcelegolanAevitcefedaetacidni

rewopniamehtmorfnekatsiCDV21+

golanAehtotdetuordnaylppus

etarapes3gnoladraobscinortcele

niamehtotdeilppussiCDV21+.shtap

snipaivpmupmuucavdnarosserpmoc

.rotcennoc401PJehtfo8&7

ehtotecruosasadeilppussiCDV21+

ehT.2nip401PJaivsevlavlortnoc

ehtgnidulcni,sdaolCDV21+gniniamer

rofrewopsevirdtahtretrevnocCD-CD

.1nip401PJaivdeilppusera,UPCeht

golanA

dnuosartlU

.devomer

ybdevloser

golanAeht

.evitcefed

ehtsiCDV22ehT

hcihwegatlovylno

detsettonsaw

ehtnotneserp

ehtnehwrotcennoc

UPCgolanA

.tneserpsawelbac

ehtno011FesuF

scinortcelegolanA

sinepolliwdraob

notrohsasiereht

ehtnoCDV22eht

scinortceleUPC

siesufsihT.draob

lliwdnaelbatteser

sirewopnehwteser
ytilibissopdnocesA

nieruliafaebdluoc

ylppusCDV22eht

golanAehtno

.draobscinortcele

tonsimelborpehtfI

UPCehtgnignahc

,draobscinortcele

sidraobscinortcele

Syntec

VitMan

ãã

ã

ãã

page 69

Troubleshooting steps

System Test Procedures

petSerudecorPelanoitaRsetoN

ehtrofkcehC

foecneserp

-,A-CDV21+

g.3

dnaA-CDV21

htobnoCDV5+

sesuffosedis

dna,801F,701F

111F

.detcennocsid

CDV21+rofkcehC

h.3

htobnotneserp

501Fesuffosedis

ehtnosesufeerhtoslaeraerehT

.retrevnocCD-CDehtfoedistuptuo
dluowsesufesehtfoenonineponA

golanAehthtiwmelborpaetacidni

ehthtobnehwdraobscinortcele

dnaelbacrewopdnuosartlU-golanA

eraelbacrewopUPCgolanAeht

snurretrevnocCDCDCDV22ehT

aivylppusniamCDV21+ehtmorf

rewopseilppusosla501F.501Fesuf

rotalugerraenilksidyppolfehtot

-otpOeerhtehtsevirddna)451U(
follA.301OSI101OSIsrotalosi

golanAehtnoerasdaoleseht

ehtnieruliafA.draobscinortcele

aetacidnidluowniamCDV21+

.draobscinortcelegolanAevitcefed

4. CPU electronics board check

petSerudecorPelanoitaRsetoN

yameruliafehT

ehtnoebyllautca

potehtevomeR

.srevocmottobdna

rewopehtkcehC

a.4

UPCehtgniretne

golanAehtaiv

.elbacrewopUPC

ehtsedulcnisihT

.CDV22

.evitcefed

yameriwelbacrewoptnettimretninA

.UPCgninoitcnufnonanitirplucehteb

snipUPCehttarewopehtfokcehcA

sirewopehttahteetnarauglliw

nisretcarahconeraerehtfI.tneserp

,CDV5+elihwyalpsidDCLeht

,tneserperaCDV22dnaA-CDV21+

sidraobscinortceleUPCeht

eludomDCL

UPCehtotdehcatta

.draobscinortcele

ehtgnitsujdayrtoslA

ybtsartnoc

thgirehtgnisserped

ekamotnottubeulb

rorethgilyalpsideht
otnottubeulbtfeleht

yalpsidehtekam

.rekrad

Troubleshooting steps

page 70

Syntec

VitMan

ãã

ã

ãã

System Test Procedures

petSerudecorPelanoitaRsetoN

ehtpu-rewopnO

rossecorporcim

llaffonrutdluohs

llufrofkcehC

egamad/gnitaes

b.4

UPCehtno

lortnocgolanA

.elbac

).yalpsid

yalpsidehtnosiogoLcetnySehtfI

,DERerasDELruofehtdnayltnatsnoc

nimelborpaebyamereht

dnaUPCehtneewtebsnoitacinummoc

UPCehT.sdraobscinortcelegolanAeht

ehtstcennocelbaclangisgolanA

snipnoUPCehtotretrevnocD/AgolanA

tonnacUPCehtfI.05dna,84,64,44,24

golanAehtnoD/Aehthtiwetacinummoc

ehtniniamerlliwti,draobscinortcele

,tcatnisielbacehtfI.etatsogoLcetnyS

ehtroUPCehtnoebnacmelborpeht

golanAehT.sdraobscinortcelegolanA

evitcefedaevahdluocdraobscinortcele

sseccaotgniliafebdluocUPCehtroD/A

ehtemussa,esacsihtnI.yltcerrocD/Aeht

.evitcefedsidraobscinortcelegolanA

ylriafgnikrowebtsumUPCehtecniS(

ehtotnoogolcetnySehtdaolotllew

elihwogol

dabasah

).draob

lenaptnorfruof

nehtdnasDEL

cetnySehtyalpsid

.nurerascitsongaid

snoitacinummocfI

dehsilbatsetonera

UPCehtneewteb

golanAdna

,draobscinortcele

edocemit-nureht

ehtro,muskcehc
sitpurretnism01
ehtmorfgnissim

kcolcemitlaer

erasDELeht,)61U(

ehT(.DERottes

dnaedocemit-nur

kcolcemitlaereht

nodetacolhtobera

scinortceleUPCeht

ehttahtkcehC

liatgipdraobyek

c.4

Syntec

VitMan

yllufsielbac

ehtnodetaes

scinortceleUPC

.rotcennocdraob

ãã

ã

ãã

.evitcefedylekil

page 71

ehtotdnopserotmetsysehtfoeruliaF

ehthtiwmelborpaotebdluocdraobyek

simelborponfI.elbaclangisdraobyek

tsomsidraobscinortceleUPCeht,dnuof

Troubleshooting steps

tahtsemussasihT

semocmetsyseht

lamronstihtiwpu

htiW.neercslaitini

draobyekon

.gnitareposnoitcnuf

System Test Procedures

petSerudecorPelanoitaRsetoN

eraslangisehT

ssorcadessap

rotalosiotpona

scinortcele

sihcihwdraob

ehtnodetnuom

UPCehtforaer

scinortcele

eruliafA.draob

ehtfoenofo

srotalosiotpo

ehttneverplliw

morfladeptoof
gnitarepo
.yltcerroc

noitarepoehT

ladeptoofehtfo

nideyalpsidsi

ETARBILAC

LADEPTOOF

sihT.unem

ehtsetacidni

ehtfoetats

sehctiwseerht

rabasahdna

othparg

ehtetacidni

ladeptoof

.noitisop

toofehtkcehC

d.4

otnoitcennocladep

scinortceleUPCeht

.draob

aivCDV5+htiwderewopsiladeptoofehT

denrutersinoitisopladeptoofehT.2Fesuf

dellatsnitopK5.2aaivladeptoofehtmorf

nehwdenrutersiCDV0~.ladeptoofehtni

denrutersiCDV5~dnapusiladepeht

eerht,noitiddanI.nwodyllufsitinehw

CDV5~ylppusotdeiterasehctiwsorcim

nehwCDV0~dnaetatsevitcaniehtninehw

ehtetacidnisehctiwseerhtesehT.evitca

eht

.tfelro,thgir,pusiladep

neercs

5. A/D Reference check

petSerudecorPelanoitaRsetoN

potehtevomeR

.srevocmottobdna

otMVDaesU

ehterusaem

a.5

ehtnoCDV5+

scinortcelegolanA

neewtebdraob

dna)dnG(101PT

4nip001X

Troubleshooting steps

page 72

draobscinortcelegolanAehtnoD/AehT

otecnerefer)%5–(CDV5+asdeen

oslasiecnereferD/AehT.ylreporpetarepo

.srosneserusserpevifllaotdef

siCDV21+nehwCDV5+foecnesba

111Fesuffosedishtobnotneserp

raenilCDV5+ehtnieruliafasetacidni

eht.e.I.tnenopmocdetrohsarorotaluger

.evitcefedsidraobscinortcelegolanA

Syntec

CDV5+

.D/A

lliwUPCehT

ehttagnah

fiogoLcetnyS

otsliafD/Aeht

tcerroctroper

aoteudsedoc

evitcefed

ehttaecnerefer

ãã

ã

VitMan

ãã

System Test Procedures

6. Analog electronics board check

petSerudecorPelanoitaRsetoN

amrofreP

daerMORPEE

golanAehtmorf

draobscinortcele

DAERehtgnisu

DRAOBGOLANA

ehtniunembus

a.6

.UNEMECIVRES

,sliafdaersihtfI

amrofrep

daerMORPEE

dnuosartlUehtmorf

draobscinortcele

daerehtgnizilitu

draobdnuosartlu

.dnammoc

ytpmenallatsnI

yfirevdnaettessac

b.6

ettessaCehttaht

setacidninocileveL

siettessaceht

.yltcerroc

.ytpme

gnibutatcennoC

noitaripsaehtottes

norotcennocreul

.ettessaceht

noitaripsaelbanE

toofehtesudna

c.6

retawwardotladep

.ettessacehtotni

.yltcerroc

ettessacehthctaW

yfirevdnanocilevel

ehtsetacidnititaht

ehtfognillif

.ettessac

draobscinortcelegolanAotUPCeht

erasdaerhtobfI.evitcefedsielbac

ebtsumsDELlevelettessacehT

ebtsumsDELlevelettessacehT

rossecorporcimehttahtseifirevnoitcasihT

fonoitroplartnecehtnoetacinummocnac

ehtrehtie,liafsdaerhtobfI.elbaclortnoc

ehtrodeliafsahdraobscinortceleUPC

lortnocdraobscinortceleUPCotgolanA

scinortceleUPCotgolanAeht,lufsseccus

ylnofoeruliafA.KOsielbaclortnocdraob

gniliafehtsetacidnisdraobowtehtfoeno

.decalperebtsumdnaevitcefedsieludom

noitcnufotnoitaripsaotylreporpgninoitcnuf

noitcnufotnoitaripsaotylreporpgninoitcnuf

MORPEEehtfI

ehtsliaf

laireSegassem

MORPEE

eblliweruliaf

.deyalpsid

Syntec

VitMan

ãã

ã

ãã

page 73

Troubleshooting steps

System Test Procedures

7. Main compressor check

petSerudecorPelanoitaRsetoN

fonoitcayrevehT(

sutatsehtotgnitteg

ehttahtseilpmineercs

rewopniamCDV21+

niamehttahtyfireV

dnarosserpmoc

a.7

erapmupmuucav

ninurotdelbane

..neercssutatseht

potehtevomeR

.srevocmottobdna

yfirevotMVDaesU

b.7

si)%01–(CDV21+

neewtebtneserp

pilcesufrewoleht

dna201Fesuffo

.)dnG(001PT

siCDV21+fI

rewolehtnotnesba

dnapilcesuf201F

,doogsiesufeht

niamehttcennocsid

ssenrahrewop

niamehtneewteb

c.7

dnaylppusrewop

golanAeht

.draobscinortcele

yfirevotMVDaesU

tneserpsiCDV21+

8/7snipneewteb
9dna)CDV21+(
.401PJfo)dnG(

ehtronrosserpmocniamehtrehtieN

nidelbasidfinurlliwpmupmuucav

ehttahtylekilnusitI.erawtfoseht

sititubffomehtdenrutsaherawtfos

kcehcehthtrow

eht

dnaesufehtfoedisdaolehtsisihT
llatatneserpCDV21+evahdluohs

yfirev,tnesbasiCDV21+fI.semit

gnivomerybneposiesufehttaht

.VMDahtiwgnitsetdna

tnesbanasahtahtesufdoogA

melborpaetacidnidluowCDV21+

noitcennocCDV21+ehthtiw

dnaylppusrewopniamehtneewteb

.draobscinortcelegolanAeht

niamehtmorfnekatsiCDV21+

ehtotdetuordnaylppusrewop

3gnoladraobscinortcelegolanA

deilppussiCDV21+.shtapetarapes

muucavdnarosserpmocniamehtot

401PJehtfo8&7snipaivpmup

asadeilppussiCDV21+.rotcennoc

aivsevlavlortnocehtotecruos

gniniamerehT.2nip401PJ

CD-CDehtgnidulcni,sdaolCDV21+

ehtrofrewopsevirdtahtretrevnoc

.1nip401PJaivdeilppusera,UPC

CDV21+eht

.)snoitcennoc

NONRUTNONRUT

NONRUTNONRUT

NONRUT

unembus

niamehtro

.seriweht

gninoitcnufsiylppus

rewopUPCehtecnis

foenomorfdeviredsi

ehtnisineercssihT

rednuuneMecivres

SPMUPFFONRUT/SPMUP

lliwesufnwolbA

ylniatrectsomla

nimelborpaetacidni

scitamuenpeht

erehtrehtiE.eludom

gniriwehtnitrohsasi

sahrosserpmoc

asA.detrohs/dellats

,revewoh,yrttsrif

nitsujesufehtecalper

esufevitcefedaesac

.eruliafehtdesuac

lacisyhprofkooL

A.snipehtotegamad

ssenrahevitcefed

gnicraesuacdluoc

rotcennocehtedisni

foeruliafotdaeldna

Troubleshooting steps

page 74

Syntec

VitMan

ãã

ã

ãã

System Test Procedures

petSerudecorPelanoitaRsetoN

siCDV21+fI

ehtnotneserp

esuf201Frewol

ehtkcehc,pilc

ybnruterpmup

gnisuYLLUFERAC

d.7

erusaemotMVDa

ehtneewteb

batlatemdesopxe

001PTdna101Qfo

egatlovsihT.)dnG(

.evitcefed

raenebdluohs

.orez

setacidnid.7petsfI

,egatlovorezraena

301Pgulpevomer

e.7

golanAehtmorf

draobscinortcele

snipehttcepsnidna

.seriwdna

noitarbilacehtnuR

f.7

riAehtrofenituor

egnahcxE

.rosserpmoC

niamehtnineponarehtiesi
ehtrogniriwrosserpmoc
.deziessahrosserpmoc

sidraobscinortcelegolanA

niaMehtelbaneotdedeen

dnaCDV0raensi101QfobatehT

erehtseilpmigninnurtonspmupeht

eht,101QnotneserpsiCDV21+fI

esuacdluocnip)gnicra(evitcefedA

scinortcelegolanAehtotegamad

agnisuacot,noitiddani,draob

rewopscitamuenpehtnieruliaf

scitamuenpehtecalpeR.ssenrah

ehtotegamadsierehtfieludom

golanAehtecalpeR.sniprossenrah

egamadsierehtfidraobscinortcele

.rotcennocdetnuomBCPehtot

ehttahtyfirevoterudecorpsihtnuR

neewtebgnitareposisubataderitne
ehtdnadraobscinortceleUPCeht
riAehT.draobscinortcelegolanA

sezilituenituornoitarbilacegnahcxE

slangissubataddnasserddaemas

erasaegnahcxEriAehtetarepoot

osladluocnepoehT

evitcefedaeb

rehtiE(.niprotcennoc

golanAehtno

nirodraobscinortcele

rewopcitamuenpeht

).ssenrah

etomeryrevA

aebdluowytilibissop

noitacinummoc

ehtneewtebmelborp

golanAdnaUPC

.sdraobscinortcele

.ylekilnuYREVsisihT

8. Vacuum pump check

petSerudecorPelanoitaRsetoN

niamehttahtyfireV

dnarosserpmoc

a.8

erapmupmuucav

ninurotdelbane

neercssutatseht

ãã

ã

Syntec

VitMan

ãã

rosserpmocniamehtrehtieN

nurlliwpmupmuucavehtron

tI.erawtfosehtnidelbasidfi

erawtfosehttahtylekilnusi

sititubffomehtdenrutsah

.kcehcehthtrow

page 75

CDV21+ehtfoeno

SPMUP

unembus

Troubleshooting steps

rewopniamCDV21+eht

morfdeviredsirewopUPC

FFONRUT/SPMUPNONRUTFFONRUT/SPMUPNONRUT

FFONRUT/SPMUPNONRUTFFONRUT/SPMUPNONRUT

FFONRUT/SPMUPNONRUT

otgnittegfonoitcayrevehT

tahtseilpmineercssutatseht

ehtecnisgninoitcnufsiylppus

sineercssihT.)snoitcennoc

ehtrednuuneMecivresehtni

System Test Procedures

petSerudecorPelanoitaRsetoN

fonmulocasiereh

ehtnosDELderarfni

scinortcelegolanA

erahcihwdraob

ytpmenallatsnI

yfirevdnaettessac

ehtfoenontaht

b.8

segassemgniwollof

:deyalpsidera

llufrevoettessaCllufrevoettessaC

llufrevoettessaCllufrevoettessaC

llufrevoettessaC

tneserpettessacoN

ettessacnoitisop-eR

ehttahtkcehC

c.8

esufpmupmuucav

esufehtniKOsi

neercssutats

potehtevomeR

.srevocmottobdna

ehttcennocsiD

rewopcitamuenp

d.8

MVDaesU.elbac

–(CDV21+yfirevot

tneserpsi)%01

fo3nipneewteb

001PTdna301PJ

.draob

.)dnG(

ehttahtetacidnisegassemesehT

siettessacehtdenimretedsahUPC

elbaneotnoitisoptcerrocehtniton

.pmupmuucaveht

llufrevodna

.nurotpmup

ylniatrectsomlalliwesufnwolbA

scitamuenpehtnimelborpaetacidni

ehtnitrohsasierehtrehtiE.eludom

sahpmupmuucavehtrogniriw

sutatsesufehT.detrohs/dellats

rednuunemecivresehtnisineercs

.unembussesufecivedgolanaeht

esufdeliafa

.noitacidni

dnaesufehtfoedisdaolehtsisihT

llatatneserpCDV21+evahdluohs

asetacidnitnesbaCDV21+.semit

CDV21+ehthtiwmelborp

rewopniamehtneewtebnoitcennoc

scinortcelegolanAehtdnaylppus

nomsirpatademia

yllamroN.ettessaceht

sisDELfonmulocsiht

ehttcetedotdesu

ehtnidiulffolevel

llufehtdnaettessac

ehtfI.snoitidnoc

denoitisopsiettessac

UPCeht,yltcerrocni

ehtelbanetonlliw

pmupmuucavehT

citamotuanasiesuf
sidnaesufgnitteser

ehT.elbaecalperton

nehwflestisteseresuf

detcennocsidsirewop

eruliafesufehT.timorf

ehtsezilitutiucric

ehtfoecneserp

ehtsaCDV21+

esufonfonoitacidni

deliafA.eruliaf

niamehtotnoitcennoc

eviglliwylppusrewop

Troubleshooting steps

page 76

Syntec

VitMan

ãã

ã

ãã

System Test Procedures

petSerudecorPelanoitaRsetoN

siCDV21+fI

301PJhtiwtnesba

yrt,detcennocsid

ehtgnitcennocsid

rewopniam

neewtebssenrah

rewopniameht

e.8

ehtdnaylppus

scinortcelegolanA

MVDaesU.draob

siCDV21+yfirevot

neewtebtneserp

8/7snip

9dna)CDV21+(
.401PJfo)dnG(

siCDV21+fI

,301PJnotneserp

ehttcennocer

rewopcitamuenp

ehtkcehC.ssenrah

ybnruterpmup

f.8

gnisuYLLUFERAC
erusaemotMVDa

ehtneewteb

batlatemdesopxe

001PTdna501Qfo

.evitcefed

egatlovsihT.)dnG(

raenebdluohs

.orez

setacidnif.8petsfI

,egatlovorezraena

301Pgulpevomer

g.8

golanAehtmorf

draobscinortcele

snipehttcepsnidna

.seriwdna

noitarbilacehtnuR

h.8

riAehtrofenituor

egnahcxE

niamehtmorfnekatsiCDV21+

ehtotdetuordnaylppusrewop

3gnoladraobscinortcelegolanA

deilppussiCDV21+.shtapetarapes

muucavdnarosserpmocniamehtot

401PJehtfo8&7snipaivpmup

asadeilppussiCDV21+.rotcennoc

aivsevlavlortnocehtotecruos

gniniamerehT.2nip401PJ

CD-CDehtgnidulcni,sdaolCDV21+

ehtrofrewopsevirdtahtretrevnoc

.1nip401PJaivdeilppusera,UPC

dnaCDV0raensi501QfobatehT

sierehtseilpmigninnurtonpmupeht

pmupmuucavehtnineponarehtie

.deziessahrosserpmocehtrogniriw

eht,501QnotneserpsiCDV21+fI

sidraobscinortcelegolanA

esuacdluocnip)gnicra(evitcefedA

scinortcelegolanAehtotegamad

agnisuacot,noitiddani,draob

rewopscitamuenpehtnieruliaf

scitamuenpehtecalpeR.ssenrah

ehtotegamadsierehtfieludom

golanAehtecalpeR.sniprossenrah

egamadsierehtfidraobscinortcele

.rotcennocdetnuomBCPehtot

ehttahtyfirevoterudecorpsihtnuR

neewtebgnitareposisubataderitne
ehtdnadraobscinortceleUPCeht
riAehT.draobscinortcelegolanA

sezilituenituornoitarbilacegnahcxE

slangissubataddnasserddaemas

erasaegnahcxEriAehtetarepoot

.pmuPmuucaVehtelbaneotdedeen

lacisyhprofkooL

A.snipehtotegamad

ssenrahevitcefed

gnicraesuacdluoc

rotcennocehtedisni

foeruliafotdaeldna

.seriweht

osladluocnepoehT

evitcefedaeb

rehtiE(.niprotcennoc

golanAehtno

nirodraobscinortcele

rewopcitamuenpeht

).ssenrah

etomeryrevA

aebdluowytilibissop

noitacinummoc

ehtneewtebmelborp

golanAdnaUPC

.sdraobscinortcele

.ylekilnuYREVsisihT

Syntec

VitMan

ãã

ã

ãã

page 77

Troubleshooting steps

System Test Procedures

9. Light source check

petSerudecorPelanoitaRsetoN

dednelbenosierehT

ehT.ytilibissoperuliaf

sesuyartecruosthgil

evomoterusserpria

sblubBdnaAeht

owtehtfI.noitisopotni

dessorcerewsenilria
ehtro,riaperagnirud
ecruosthgillaudividni

ehtnosrotcennoc

scinortcelegolanA

dessorcerewdraob
eht,riaperagnirud
pukcabehtniblub

tubthgillliwnoitisop

ehtthgilotliaflliw

tonlliwtiecnissrebif

.htapcitpoehtnieb

erawtfoslortnocehT

ehtedilssyawlalliw

ehtsatfelehtotsblub

sitI.deneposireward

yfitnediottnatropmi

pmaltcerrocehttaht

rewardehtsatilsaw

.denepotsrifsi

.pugnithgil

thgilehttahtyfireV

a.9

nodenrut

pusthgilecruos

sinoitcnufehtnehw

}f.9

}m.9

ytisnetniehtkcehC

ehtnobonklortnoc

thgilehtfotnorf

ehtfI.ecruos

tatessiytisnetni

ehtdnamumixam

situptuonoitanimulli

b.9

,etauqedaton

rebifehtkcehc

rofelbaccitpo

rehtollafI.sknik

erasnoitacidni

ehtecalper,lamron

citporebif

.rotanimulliodne

ehttahtyfireV

ehtnisiblubtcerroc

ybhtapcitpo

thgilehtgninepo

c.9

htiwrewardecruos

ehT.nonoitanimulli

dluohsblubgniwolg

ehtfotnorfnieb

rewardehtsarorrim

.sneposi

shtapgnireffidowteraerehT

erasblubehtrehtehwnognidneped

melborpehtneht,thgilsierehtfI)A

fotuoblubthgiL(.htapcitpoehtnisi

,msinahcemgnimmid,tnemngila

c.9spetsesU{).cte,srettuhsrebif

ehtneht,thgilonsierehtfI)B

h.9spetsesU{.lacirtcelesimelborp

gnihctiwsblubehtnieruliafA

asiblubehtevaeldluocmsinahcem

siblubtcerrocniehterehwetats

ybdesuacebnacsihT.detanimulli

egnahcxeblubehtnikaelriana

blubehtnoeruliafybromsinahcem

.sevlavegnahcxe

Troubleshooting steps

page 78

Syntec

VitMan

ãã

ã

ãã

System Test Procedures

petSerudecorPelanoitaRsetoN

siblubtcerrocniehtfI

ekam,detanimulli

sblubhtobtahterus

-erdnadoogera
ecruosthgilehtllatsni

.tinuehtotnireward
dnapotehtevomeR

d.9

nruT.srevocmottob

dnanoitanimullino

ehtesuneht

FFO/NOnoitanimulli

ehttcelesotnottub

tahtyfireV.blubB
lortnocblubhtob
riehtevahsevlav

.tilsDEL

sDELevlavhtobehtfI

nrut,etanimullitonod

edisstinometsyseht

ehttcennocsiddna

lortnocscitamuenp

ehterusaeM.elbac

e.9

neewtebecnatsiser

tI.61dna51snip

~erusaemdluohs

erusaeM.smho052

ecnatsisereht

dna71snipneewteb

osladluohstI.81

smho052~erusaem

nisiblubtcerrocehtfI

,htapscitpoeht

f.9

ehtnepoylluferac

rewardecruosthgil

ehttcepsnidna

.htapscitpo

ehtniatrecekaM

g.9

yllufsirewardscitpo

ehtotnidellatsni

.metsys

golanAeht,doogerastiucric

.rewardscitpoehtecalper

.sblubehtotrewoptcennoc

dellortnocsiedilsnoitisopthgilehT

citamuenpehtnosevlavforiapayb

ebdluohssevlavhtoBeludom

pukcabehtecrofotdezigrene

.blubBehtottniopotmsinahcem

asetacidnitiucricrehtienineponA

htobfI.eludomscitamuenpevitcefed

.evitcefedsidraobscinortcele

dna,retlifder-arfnieht,sesnelhtoB

dlehebdluohsrorrimlacirehpseht

gniniaterriehthtiwecalpniylmrif

gnimmideht,noitiddanI.sgnir

.yleerfetatordluohsmsinahcem

otmsinahcemrettuhsehttcepsnI

esoolnekorbtonsahtierusekam

ynafI.noitacoldetnemecstimorf

,htapscitpoehtnidnuofsimelborp

noitisopnidlehsirewardscitpoehT
erugiFMOeeS(hctalgnitatorahtiw

yllufrewardehtevahoteruliafA.)41

oteruliafanitluserlliwdellatsni

Syntec

VitMan

ãã

ã

ãã

page 79

Troubleshooting steps

System Test Procedures

petSerudecorPelanoitaRsetoN

noitanimulliehtyalpsidlliwtinuehT

scinortcelegolanAehtnehwnocI

ehtnrutotdednammocsidraob

thgilehttahtyfireV

h.9

detanimulliecruos

BCLehtnisinocI

.yalpsid

noitanimullifI

tonotsraeppa

i.9

,ylreporpnoitcnuf

elosnocehtkcehc

gninrawrofyalpsid

.segassem

,liafsnottubllafI

ehttahtkcehc

ecafretnidraobyek

j.9

detaesyllufsielbac

snipgnitamehtotno

UPCehtfo

.draobscinortcele

nimelborpaebyamereht

aotetalosiotdetavitcaebnac

eht,eruliafasahnottubelgnis

.evitcefedsidraobyek

.sregniferabhtiwblubeht

noitcennocdetaesyltcerrocA

.draobscinortceleUPC

,raeppatonseodnocIehtfI.nopmal

.nottubnoitanimulliehtgnizingocer

snoitcnuflacigrusrehtotahtkcehC

afI.eruliafasahtahtnottubcificeps

eB.yrassecenfi)s(blubehtecalpeR
tohtonsiblubehttahtluferacyrev
hcuottonoD.devomersitierofeb

UPCehtdnadraobyekehtneewteb

ehtnisieruliafehtetacidnidluow

Troubleshooting steps

page 80

Syntec

VitMan

ãã

ã

ãã

System Test Procedures

petSerudecorPelanoitaRsetoN

setacidniegassemgnissimXblubehT

ehteestonseodmetsysehttaht

ro,tuodenrubebyamtI.blubdeificeps

htapCDV42+ehtnikaerbasiereht

ehtotkcabdna)s(blubehthguorht

erasblubehT.draobscinortcelegolanA

niamehtmorfCDV42+htiwdeilppus

ehT.601Fesufaivylppusrewop

lliwdnadesnessi601Ffonoitidnoc

.nepositifieruliafesufblubayalpsid

teserlliwtI.esufelbatteserasi601F

asA.devomersirewopnehwflesti

ylekiltsomeruliafesufbluba,tluser

ylppusblubehtfoenonitrohsasetacidni

ecruoSthgiLehtedisnitrohsaroselbac

eruliafesufblubehT

rucconacnoitidnoc

blubafinoitarepo
tuotrohsoterew

.sliaftisayllanretni

esufpirtlliwtrohsehT

metsysehT.601F

ehtothctiwslliw

lliwdna,revewoh

sanoitanimullierotser

sah601Fsanoos

enontahtyfireV

gniwollofehtfo

erasegassem

DCLehtni

:enilsutats

k.9

gnissimAbluB)1gnissimAbluB)1

gnissimAbluB)1gnissimAbluB)1

gnissimAbluB)1

gnissimBbluB)2

eruliafAbluB)3

eruliafBbluB)4

eruliafesufbluB)5

.rewarDecruoS

.draobscinortcele

ecruoSthgiLehtesaeleR.rewarD

.tinuehtfotuoyawtraptillupdnarewarD

,spotsegassemeruliafesufbluBehtfI

lamrongnirud

seriwehtfoenonitrohsasiereht

bluBehtfI.stekcospmalehtotgnidael
eht,stsisrepegassemeruliafesuf
ebotdeenlliweludomscitamuenp

CDV42+EGNAROehttahtosdevomer

yehtsadetcepsniebnacseriwecruos

dnadraobscinortcelegolanAehtevael

,blubpukcab

thgiLehtfoediskcabehtotdetuorera

setacidniegassemeruliafXblubehT

nrutersblubehtgnivirdtonsimetsyseht

.derevocer

ssalcegassemsihT.dnuorgotylluf

golanAehtnoeruliafasetacidni

Syntec

VitMan

retfastsisrep)2ro)1egassemrehtiefI

nwonkahtiwdecalperneebsahblubeht

/eriwnekorbaylekilsiereht,blubdoog

golanAehtneewtebelbacdetaesnu

ecruoSthgiLehtdnadraobscinortcele

ehtotdetcennocsiblubAehT.rewarD

hguorhtdraobscinortcelegolanA

siblubBehT.701PJrotcennoc

htoB.601PJrotcennocaivdetcennoc

tarotcennocnip-4nommocaerahssblub

.rewarDecruoSthgiLehtforaereht

ãã

ã

ãã

page 81

Troubleshooting steps

System Test Procedures

petSerudecorPelanoitaRsetoN

eruliafesufblubehT

llatahtyfireV

ehtfoeerht

gniwollof

erasegassem

ehtnitonni

l.9

eruliaf

nepo

:enilsutatsDCL

eruliafesufbluB)1eruliafesufbluB)1

eruliafesufbluB)1eruliafesufbluB)1

eruliafesufbluB)1

esufpmupriA)2

esufdnuosartlU)3

tahtyfireV

ehtforehtien

gniwollof

m.9

erasegassem

:deyalpsid

melborpAbluB)1melborpAbluB)1

melborpAbluB)1melborpAbluB)1

melborpAbluB)1

melborpBbluB)2

.draobscinortcele

ehtrofkcehC

CDV42+sreviledylppusrewopniamehT

eerhtllA.sesuftnereffideerhthguorht

aylekiltsomsinepognitacidnisesuf

ehtroylppusniamCDV42+ehtnieruliaf

rewopniamehtneewtebssenrahelbac

.draobscinortcelegolanAehtdnaylppus

ehT.ssenrah

siCDV42+

egats-owtaninodenrutsiblubehT

blubehtsmrawegatstsrifehT.ssecorp

lliwsihT.rotsiserW5seiresagnisuyb

dnocesehT.wolgotblubehtesuac

tuognitrohsybyllufblubehtsthgilegats

blubehtthgiloteruliafA.rotsiserW5eht

golanAehtnieruliafasetacidniylluf

rucconacnoitidnoc

CDV42+foecneserp

rewopniamehtta

tneserpsitifI.ylppus

,ylppusrewopehtta

nekorbarofkcehc

ninoitcennoc/eriw

rewopCDniameht

3nipotdetcennoc

.eriwEGNAROnaaiv

10. Vitrector check

petSerudecorPelanoitaRsetoN

ehttahtyfireV

a.01

dnuosartlU

TONsinoitcnuf

.delbane

yllautumsinoitcnufdnuosartlUehT

ehtfI.rotcertivehthtiwevisulcxe

der(detanimullisiDELdnuosartlU

sinoitcnufdnuosartlUeht,)neergfo
FFO/NOdnuosartlUehT.detceles
elpitlumdesserpedebtsumnottub

.dehsiugnitxesiDELehtlitnusemit

ehtfonoisserpedhcaE

nottubFFO/NOdnuosartlU

ehthguorhtselcyc

ehtfosedomlanoitarepo

ehT.eceipdnahdnuosartlu

.ffosiedomtsal

Troubleshooting steps

page 82

Syntec

VitMan

ãã

ã

ãã

System Test Procedures

petSerudecorPelanoitaRsetoN

sDELehtfoytisnetniehT

DELehtnidellortnocsi

ehtfounembusYTISNETNI

ekaM.unemYALPSID

pusiytisnetniehttahterus

ehtfosutatsehteesotylluf
.moortilylthgirbanisDEL

nacsrorrelanretnineveS

morfrotcertivehtpeek

rotcertivehtfI.gnitarepo

rofkcehc,DERsiDEL

gniwollofehtfoeno

eruliafrosnvesevirD)3

erusserpevirdhgiH)4

erusserpevirdwoL)5

tneserpladeptoofoN)6

,seslupriaoneraerehtfI
fonoitarepoehtrofnetsil

dnaevlavrotcertiveht

fonoitarepoehtevresbo

DELevlavrotcertiveht

tonseodDELevlavehtfI

aebyamereht,etanimulli

yllufton/eriwnekorb

/rotcennocdetaes

scitamuenpehtneewteb

golanAehtdnaeludom

.draobscinortcele

ehttahtyfireV

noitcnufrotcertiv

b.01

nodelbanesi

tahtdnatinueht

rotcertiveht

.neergsiDEL

.dehsiugnitxe

ehttcennocsiD

ehtmorfrotcertiv

reullenaptnorf

dnarotcennoc

ehtsserped

c.01

.ladeptoof

riatahtkcehC

eraseslup

ehtmorftuptuo

rotcertiv

.rotcennoc

.metsys

oneraerehtfI

,seslupria

potehtevomer

mottobdna

.srevoc

d.01

ehtrofnetsiL

ehtfonoitarepo

,evlavrotcertiv

ehtevresbodna

ehtfonoitarepo

evlavrotcertiv

.DEL

ybedameraskcehclanretnilareveS

eht,stsixerorrenafI.metsyseht

delbasideblliwnoitcnufrotcertiv

ehtfI.dereblliwDELehtdna

rotcertiveht,KOeraskcehclanretni

.neergeblliwDELsutats

rotcertivehtfidraobyekehttcepsuS

onsierehtdnathgiltonlliwDEL

.yekehtgnisserpedmorfkcilcyek

nidelbasidebdluockcilcyekehT(

)unembussecivreSoiduAeht

yalpsidehtfiUPCehttcepsuS

sahedomrotcertivehttahtsetacidni

:segassem

delbasideciveD)1delbasideciveD)1

delbasideciveD)1delbasideciveD)1

delbasideciveD)1

eruliafesufevirD)2

llitssiDELehttubderetneneeb

eruliafesufevlaV)7

niruccodluocnoitcnuflamrotcertivA

.lacirtceleebrohtapcitamuenpeht

eht,tneserpseslupriaeraerehtfI

aebdluowsmelborpylekiltsom

yltcerrocninarorotcertivevitcefed

ehtnorotalugererusserpdetsujda

.eludomscitamuenp

naebdluowytilibissopetomerA

neewtebebutdetcennocyltcerrocni

ehtdnaeludomcitamuenpeht

gniynapmoccanasahevlavhcaE

ehtnehwdetanimullisitahtDELder

ehtfoesacehtnI.detavitcasievlav

detavitcasievlaveht,evlavrotcertiv

ehttuoesluperusserpaecalpot

.rotcennocrotcertiv

siriatubgnihsalfsiDELevlavehtfI

aylekiltsomsiereht,tnesba

eht,htapriaehtninoitcurtsbo

rotcertivehtrofrotalugererusserp

sievlavrotcertivehtro,deliafsah

otgniliaftubrewopgniviecer

tahteriuqeresehtfoynA.etarepo

.decalperebeludomscitamuenpeht

Syntec

VitMan

ãã

ã

ãã

page 83

Troubleshooting steps

System Test Procedures

petSerudecorPelanoitaRsetoN

yllufton/eriwnekorbaebyamerehT

DELevlavehtfI

,etanimullitonseod

nometsysehtnrut

.draobscinortcele

dnaedissti

ehttcennocsid

e.01

lortnocscitamuenp

ehterusaeM.elbac

neewtebecnatsiser

tI.6dna5snip

~erusaemdluohs

.smho052

.decalper

rotcertivehtfI

siDELnoitcnuf

ehttahtyfirev,neerg

siladeptoof

f.01

ehtgnidnammoc

ehtfI.tucotrotcertiv

seodnocienitolliug

ees,raeppaton

ehtnimelborp

).unembusFFO

.ecafretniladeptoof

ehtneewteb/rotcennocdetaes

golanAehtdnaeludomscitamuenp

,tiucricneponasetacidniecnatsiserehtfI

,elbacevlavehtnikaerbarehtiesiereht

,esacrehtienI.evitcefedsievlavehtro

.evitcefedsieludomscitamuenpeht

siereht,desolcsitisetacidnitiucricehtfI

.scinortceleevirdehthtiwmelborpaylekil

ebdluohsdraobscinortcelegolanAehT

nocienitolliugawohslliwyalpsidehT

ehtotdetatorsiladeptoofehtnehw

yllamronsisihT.noitisopgnittucelbane

ehT(.ladepehtfonoitisopthgireht

ehtmorfdelbasidebdluocnocienitolliug

SINOCIRETTUC/NOSINOCIRETTUC

rotcertivehT

sievlav

otdetcennoc

ehtfo6&5snip

.elbaclortnoc

noitisoptucehT

dehctiwsebnac

ehthtiwtfelehtot

NOSIXULFER

XULFER/TFEL

THGIRNOSI

.dnammocunem

11. Foot pedal interface check

petSerudecorPelanoitaRsetoN

eerhtsniatnocladeptoofehT

nehwevitcaeratahtsehctiws

stimorfdevomsiladepeht

ehtnieruliafA.noitisopeldi

dluocelbacstiroladeptoof

scinortceleUPCehtgnihcaer

ehtedisnislangisehtsetuor

lenapraerehtmorfmetsys

nekorbA.draobscinortcele

/detaesyllufton/eriw

ehtesuacdluocrotcennoc

esehtfoynanieruliafA

melborpasetacidnisegatlov

noeruliafA

ladeptoofeht

oslalliwesuf
ehtpeek
sehctiws

gniebmorf

nA.detceted

esufnepo

anitluserlliw

esufladeP

eruliaf

ninoitacidni

yalpsideht

.draobybab

.detcennocsiladepeht

a.11

.esiwrehtoCDV5~

.esiwrehtoCDV5~

.esiwrehto

.desserpedylluf

rotalosiotpoehtno1Pfo01dna

.CDV5~taebdluohs2niP)1

tadnathgirdevomsiladepeht

nehwCDV0~aebdluohs7niP)4

tadnatfeldevomsiladepeht

CDV0~tadnapusiladepeht

nehwCDV0~taebdluohs4niP)2
nehwCDV0~taebdluohs7niP)3

nehwCDV5~taebdluohs9niP)5

segatlovehterusaemotMVDaesU

,9,7,5,4,2snipdna1nipneewteb

morflangisehttneverp

eht,noitiddanI.draob

elbaclortnocladeptoof

UPCehtotrotcennoc

.melborp

nehwCDV0~taebdluohs01niP)6

sitinehwCDV5~dnapusiladepeht

ladeptoofehtni

Troubleshooting steps

page 84

Syntec

VitMan

ãã

ã

ãã

System Test Procedures

petSerudecorPelanoitaRsetoN

dnapotehtevomeR

.srevocmottob

ladeptoofehttcennocsiD

otretemtlovaesudna

ehtfoytivitcennocyfirev

lortnocladeptoofretni

b.11

ehtgnimrofrepybelbac

raerehttastsetgniwollof

ladeptooflenap

:rotcennoc

notneserpsiCDV5+~

.1dna2snipneewteb

lanretniehttcennocsiD

elbaclortnocladeptoof

rotalosiotpoehtmorf

aesU.draobscinortcele

c.11

ehterusaemotMVD

ehtneewtebecnatsiser

,1sniprotcennocenilni

ehtdna01,9,7,5,4,2

rotcennoclenapraer

7,6,5,4,3,2,1snip

ehtroladeptoofehtnitrohsA

ehtwolbnacelbacladeptoof

ehtfI.esufladeptoofelbatteser

nehwsraelceruliafesufladeP

,detcennocsidsiladeptoofeht

evitcefedsiladeptoofeht

xisehtfoenoynanikaerbA

nieruliafasetacidnisrotcudnoc

tooF,naMtiV,yssAelbaCeht

.A4650001NPlanretnIladeP

morf)CDV5+(2niP

rotalosiotpoeht

sidraobscinortcele

ehtni2nipotdetuor

.rotcennocladeptoof

morf)dnuorG(1niP

rotalosiotpoeht

sidraobscinortcele

ehtni1nipotdetuor

.rotcennocladeptoof

12. Ultrasound check

petSerudecorPelanoitaRsetoN

yllautumsinoitcnufrotcertiVeh

fI.dnuosartlUehthtiwevisulcxe

ehtfonoisserpedhcaE

nottubFFO/NOrotcertiv

ehthguorhtselcyc

ehtfosedomlanoitarepo

edomtsalehT.rotcertiv

ehttahtyfireV

a.21

sinoitcnufrotcertiV

.delbaneTON

detanimullisiDELrotcertiVeht

rotcertiveht,)neergfoder(

ehT.detcelessinoitcnuf

ebtsumnottubFFO/NOrotcertiV

litnusemitelpitlumdesserped

.dehsiugnitxesiDELeht

.ffosi

Syntec

VitMan

ãã

ã

ãã

page 85

Troubleshooting steps

System Test Procedures

petSerudecorPelanoitaRsetoN

sisDELehtfoytisnetniehT

DELehtnidellortnoc

ehtfounembusYTISNETNI

erusekaM.unemYALPSID

yllufpusiytisnetniehttaht

ehtfosutatsehteesot

.moortilylthgirbanisDEL

nacsrorrelanretnineetniN

morfdnuosartlUehtpeek

dnuosartlUehtfI.gnitarepo
enorofkcehc,DERsiDEL
:segassemgniwollofehtfo

eceipdnahenutesaelP)11

ylnobonkgnikcolesU)81

ebnacnoitisoptucehT

ehthtiwtfelehtotdehctiws

NOSIXULFER/TFEL

.dnammocunemTHGIR

ehtevahoterusekaM

nehwdemirpdnuosartlu

ehthtiwstsetgnimrofrep

ehT.eceipdnahdnuosartlu

emoceblliweceipdnah

onsierehtnehwmrawetiuq

ehthguorhttnaripsafowolf

ehttahtyfireV

sinoitcnufdnuosartlU

b.21

tinuehtnodelbane

dnuosartlUehttahtdna

siDELdnuosartlU

.neerg

dnuosartlUehtfI

,neergsiDELnoitcnuf

ladeptoofehttahtyfirev

ehtgnidnammocsi

c.21

ehtfI.tucotdnuosartlU

tonseodnocievaw

.11ees,raeppa

ecafretnIladeptooF

kcehC

seodnocievawehtfI

ehtkcehc,raeppa

niegatnecreprewop

d.21

rewopehT.yalpsideht

elbatsujdasidereviled

ni%001ot%1morf

htiwstnemercni%1

noyllufgnieb%001

eraskcehclanretnilareveS

nafI.metsysehtybedam

dnuosartlUeht,stsixerorre

dnadelbasideblliwnoitcnuf

ehtfI.dereblliwDELeht

eht,KOeraskcehclanretni

lliwDELsutatsdnuosartlU

.neergeb

ehtfidraobyekehttcepsuS

thgiltonlliwDELdnuosartlU

morfkcilcyekonsierehtdna

ehT(.yekehtgnisserped

nidelbasidebdluockcilcyek

secivreSoiduAeht

)unembus

ehtfiUPCehttcepsuS

ehttahtsetacidniyalpsid

neebsahedomdnuosartlU

llitssiDELehttubderetne

.dehsiugnitxe

evawawohslliwyalpsidehT

siladeptoofehtnehwnoci

elbaneehtotdetator

sisihT.noitisopgnittuc

fonoitisopthgirehtyllamron
nocievawehT(.ladepeht
ehtmorfdelbasidebdluoc

SINOCIRETTUC

FFOSINOCIRETTUC/NO

).unembus

ebyamlevelrewop%1A

ynamrofrepotllamsoot

.gnittucelbaeciton

llufrevoettessaC)1llufrevoettessaC)1

llufrevoettessaC)1llufrevoettessaC)1

llufrevoettessaC)1

dabnoitisopettessaC)2

eruliafevlavettessaC)3

delbasideciveD)4

eruliafesufevirD)5

levelmuucavhgiH)6

tneserpettessaCoN)7

tneserpladeptoofoN)8
ettessackcolesaelP)01
ettessacnoitisop-eR)21

!detrobagninuT)31

!deliafgninuT)41

eceipdnahgninuT)51

dewollatongninuT)61

eruliafesufmuucaV)91

eruliafesufevlaV)02

NOSIXULFER

.eldnah

tneserpeceipdnahoN)9

nepoesufdnuosartlU)71

Troubleshooting steps

page 86

Syntec

VitMan

ãã

ã

ãã

System Test Procedures

petSerudecorPelanoitaRsetoN

seilppushcihwelbaclanretniehT

tnorfehtotrewopdnuosartlu

ehttahtyfireV

tcennocretnidnuosartlU

e.21

ylmrifsielbac

ehtotdetcennoc

scinortcelednuosartlu

.draob

tonsieceipdnahehtfI

ehttahtyfirev,detceted

elbaclortnocdnuosartlu
ehtneewtebsnurhcihw

scinortcelegolana

f.21

ehtdnadraob

scinortcelednuosartlu

tadetaesyllufsidraob

erehttahtdnasdnehtob

ehtotegamadonsi

.elbac

sieceipdnahehtfI

tonlliwtubdetceted

g.21

ehtrofkcehc,enut

sutatsesufdnuosartlU

.egassem

sieceipdnahehtfI

tonlliwtubdetceted

rewopehtkcehc,enut

ehtotdereviled

scinortcelednuosartlu

ehtesaeleR.draob

ylluferacdnalenapraer

h.21

rewopehttcennocsid

ehtmorfssenrah

scinortcelednuosartlu

otMVDaesU.draob

ehttahterusaem

reptcerrocerasegatlov

dnuosartlUgolanAeht

.tuonipelbaCrewoP

ehT.ygreneehtseilppus

.eceipdnah

ehtfognisnestcerroceht

.eceipdnah

dnuosartlueht,tneserpsi

evitcefed

evitcefedsidraob

.evitcefedsi

rednudetuorsirotcennoclenap

dnaylppusrewopmetsyseht

ehtnosrotcennocowtotno

.draobscinortcelednuosartlu

thgirreppuehtnirotcennocehT

ehtsesneswolebtsujrotcennoc

yletamitlusieceipdnahehT

UPCehttatneserpsadesnes

nekorbA.draobscinortcele

tneverplliwelbacrehtienilangis

egassemesufdnuosartlUehtfI

.evitcefedsidraobscinortcele

draobscinortcelednuosartluehT

ehtmorfetarapesyllanoitcnufsi

scinortceleBCPdnagolanA

ehtnieruliafasierehtfI.sdraob

eruliafeht,scinortcelednuosartlu

gniniamerehtpeektonlliw

ehtfI.gnitarepomorfsnoitcnuf

tcerrocehtsahelbacrewop

smetigniwollofeht,segatlov

:melborpehtgnisuacebdluoc

sieceipdnahdnuosartluehT.1

scinortcelednuosartluehT.2

draobscinortcelegolanaehT.3

snoisarbarofkcehC

sitI.elbacehtno

tahttnatropmiYREV

otruccoegamadon

.elbacsiht

ytilibissopylekilnunA

oteruliafehttahtsi

eceipdnahehtesnes

asitneserpsa

UPCevitcefed

.draobscinortcele

onsierehterusekaM

golanAehtotegamad

rewoPdnuosartlU

gnicalpererofebelbac

dnuosartlueht

.draobscinortcele

noitalusnieriwehT

neebevahsroloc

ehtevahotnesohc

:gninaemgniwollof

dnuorG:kcalB

CDV5+:deR

CDV21+teloiV

CDV21-:yerG

CDV42+:egnarO

Syntec

VitMan

ãã

ã

ãã

page 87

Troubleshooting steps

System Test Procedures

13. Aspiration check

petSerudecorPelanoitaRsetoN

DELehtnidellortnoc

skcehclanretnilareveS

.metsysehtybedamera

eht,stsixerorrenafI

lliwnoitcnufnoitaripsA

dnaettessacallatsnI

a.31

ehttahtdnatinu

siDELnoitaripsAehtfI

siereht,desserpedsi

kaelrianaylekil

ehthtiwdetaicossa

b.31

.srevocmottobdna

gnibutehttcepsnI

golanAehtfosrosnes

oslA.draobscinortcele

gnioggnibutehttcepsni

rotalugermuucavehtot

.retlif

noitaripsAehttahtyfirev

ehtnodelbanesinoitcnuf
.neergsiDELnoitaripsA

ladeptoofehtlitnuneerg

noitaripsaehtfonoitarepo

potehtevomeR.noitcnuf

muucavehtotdetcennoc

cibohpordyhegralehtdna

DELehtdnadelbasideb

lanretniehtfI.dereblliw

eht,KOeraskcehc

DELsutatsnoitaripsA

.neergeblliw

fidraobyekehttcepsuS

lliwDELnoitaripsAeht

onsierehtdnathgilton

gnisserpedmorfkcilcyek

kcilcyekehT(.yekeht

ehtnidelbasidebdluoc

secivreSoiduA

)unembus

ehtfiUPCehttcepsuS

ehttahtsetacidniyalpsid

sahedomnoitaripsA

ehttubderetneneeb

.dehsiugnitxellitssiDEL

nacmetsysmuucavehT

otskaeletarelotton

kaelynA.erehpsomta

stceffeesrevdaevahlliw

noitaripsaehtno

.noitcnuf

:segassem

.gnibuteht

.moortilylthgirba

eruliafrosnescc005)1eruliafrosnescc005)1

eruliafrosnescc005)1eruliafrosnescc005)1

eruliafrosnescc005)1

eruliafrosnescc05)2

lluFettessaC)3

llufrevoettessac)4

dabnoitisopettessaC)5

eruliafevlavettessaC)6

delbasideciveD)7

melborpladeptooF)8

eruliafesufevirD)9

levelmuucavhgiH)01

erusserpevirdwoL)11

levelmuucavwoL)21

tneserpettessaCoN)31

tneserpladeptoofoN)41

eruliafesufladeP)51

ettessackcolesaelP)61
ettessacnoitisop-eR)71

ylnobonkgnikcolesU)81

eruliafesufmuucaV)91

eruliafesufevlaV)02

gniwollofehtfoeromro

ehtraensessapgnibut

sisDELehtfoytisnetniehT

ehtfounembusYTISNETNI

erusekaM.unemYALPSID

otyllufpusiytisnetniehttaht

nisDELehtfosutatsehtees

nacsrorrelanretniytnewT

morfnoitaripsAehtpeek

noitaripsAehtfI.gnitarepo

enorofkcehc,DERsiDEL

ebdluohsnoitcepsniehT

ehterehwhguorohtyrev

pmupsihT.pmupmuucav

dnastnuomstinoevomnac

tsniaganoisarbaesuacnac

Troubleshooting steps

page 88

Syntec

VitMan

ãã

ã

ãã

System Test Procedures

petSerudecorPelanoitaRsetoN

ot0morfelbatsujdasinoitaripsaehT

DELnoitaripsAehtfI

tahtkcehc,neergsi

gnittesnoitaripsaeht

rehtoeulavaottessi

c.31

ehttahtdnaoreznaht

evlavhcnipnoitaripsa

ehtnehwsnepo

yllufsiladeptoof

.desserped

evlav

hcnipnoitaripsaehtfI

,nepootsliafevlav

d.31

fognittesehtkcehc

NOITARIPSAeht

ehtniDLOHSERHT

unemsgnittestnerruc

ehtfognittesehtfI

NOITARIPSA

siDLOHSERHT

potehtevomer,dilav

.srevocmottobdna

tcerrocehtrofkcehC

ehtfonoitarepo

e.31

hcnipnoitaripsa

evlavlortnocsevlav

ehtgnivresboyb

lortnocehtnoDEL

DELsihT.evlav

.evlavlortnoc
ehtnehwtilebdluohs
ebdluohsevlavhcnip

.nepo

ehT.stnemercnigHmm5nigHmm005

ehtotevitalermetsysehtfonoitisop

,yllaedI.noitaripsastceffeoslatneitap

emasehttadecalpeblliwmetsyseht

.elttobnoitagirriehtsathgieh

ehtnahtrehgihdetacolsimetsysehtfI

evissaptegotelbissopsiti,elttob

ehtotpusiladepehtnehw.e.I.xulfer

raensinoitaripsaehttahttniop

wolfesreveresuaclliwytivarg,gHmm0

othguonehgihdesiarsiladepehtlitnu

.evlavhcnipnoitaripsaehtesolc

ehtnahtrewoldetacolsimetsysehtfI

evissaptegotelbissopsiti,elttob

otpusiladepehtnehw.e.I.noitaripsa

raensinoitaripsaehttahttniopeht

esuacoteunitnoclliwytivarg,gHmm0

hgihdesiarsiladepehtlitnuwolf

hcnipnoitaripsaehtesolcothguone

ehtseificepsdlohserhtnoitaripsaehT

ebtsumhcihwlevelmuucavmuminim

hcnipnoitaripsaehterofebtneserp

fI.nepootdednammoceblliwevlav

lliwevlaveht,hgihoottessieulavsiht

.nepootdednammocebreven

gniebsirewoptahtsetacidniDELehT

noitaripsaehT.evlavehtotdeilppa

erusserpriaybdetareposievlavhcnip

riaehT.eludomscitamuenpehtmorf

.evlavlortnocehthguorhtdeilppussi

nehwdesolcnevirdsievlavhcnipehT

sidnatneserperusserpriaonsiereht

ehthguorhtriagniylppusybdenepo

sinoitaripsA

ehtybdellortnoc

.noitisopladeptoof

levelnoitaripsaehT

morfraenilsi

ehtotgHmm0

gnittesmumixam

ehtnidetceles

:sedomgniwollof

noitaripsAroiretsoP

roiretsoP

ymotcertiV

roiretsoP

dnuosartlU

noitaripsAroiretnA

ymotcertiVroiretnA

dnuosartlUroiretnA

cetnySehteeS

leunaMsrenwO

.CxidneppA

DELehtfoeruliafA

etacidninacthgilot

ehtnieriwnekorba

lortnoccitamuenp

evitcefeda,elbac

melborparo,evlav

golanAehthtiw

.draobscinortcele

Syntec

VitMan

ãã

ã

ãã

page 89

Troubleshooting steps

System Test Procedures

petSerudecorPelanoitaRsetoN

DELevlavehtfI

,etanimullitonseod

nometsysehtnrut

dnaedissti

ehttcennocsid

f.31

lortnocscitamuenp

ehterusaeM.elbac

neewtebecnatsiser

tI.8dna7snip

.evitcefed

~erusaemdluohs

.smho521

noitaripsaehtfI

snepoevlavhcnip

tub,dluohstisa

,muucavonsiereht

g.31

dnapotehtevomer

.srevocmottob

egralehttahtyfireV

siretlifcibohpordyh
.diulfhtiwdellifton
revocehtevomeR

muucavehtmorf

aesudnarotaluger

tahtyfirevotMVD

tneserpsiCDV21+
1slanimretneewteb

ehtedisni3dna

h.31

ehttsujdA.rotaluger

otlevelnoitaripsa

dnamumixam

ladepehtsserped

tahtyfireV.ylluf

tneserpsiCDV5~

2slanimretneewteb

.langis

ehtedisni3dna

rotaluger

yllufton/eriwnekorbaebyamerehT

ehtneewteb/rotcennocdetaes

golanAehtdnaeludomscitamuenp

.draobscinortcele

neponasetacidniecnatsiserehtfI

evlavehtnikaerbarehtiesiereht,tiucric

rehtienI.evitcefedsievlavehtro,elbac

sieludomscitamuenpeht,esac

siereht,desolcsitisetacidnitiucricehtfI

evirdehthtiwmelborpaylekil

scinortcelegolanAehT.scinortcele

.decalperebdluohsdraob

ehtstcetorpretlifcibohpordyhegralehT

tahttnaripsaynamorfrotalugermuucav

forebmahccc05ehtmorfepacsethgim

ettessacllufafI.ettessacnoitaripsaeht

denrutsitiehtelihwmetsysehtnitfelsi

cc05ehtnitnaripsayna,dneno

muucavehtotniniardlliwrebmahc

ehtnithguacebdnagnibutrotaluger

.retlifcibohpordyh

htiwmelborpasierehttahtelbissopsitI

sirotalugerehT.rotalugermuucaveht

golanAehtmorfCDV21+htiwderewop

scitamuenpehtaivdraobscinortcele

dellortnocsimuucavehT.elbaclortnoc

CDV0~.langisCDV5otCDV0ahtiw

CDV5~elihwGHmm0setacidni

,ladeptoofehT.GHmm055setacidni

noitaripsamumixamehthtiwdenibmoc

ehtfoedutilpmaehtslortnoc,gnittes

noitaripsaehT

detcennocsievlav

fo8&7snipot

.elbaclortnoceht

dnuofsitnaripsafI

cibohpordyhehtni

ebnacti,retlif

tuohtiwdecalper

ehtgnicalper

scitamuenperitne

.eludom

eraerehT

elbatsujda

fosdlohserht

levartladeptoof

ebtsumtaht

etaitiniotdessap

ehT.noitaripsa

erasdlohserht

ehtnidellortnoc

LADEP

SDLOHSERHT
ehtfounembus
sgnittestnerruc

.unem

Troubleshooting steps

page 90

Syntec

VitMan

ãã

ã

ãã

System Test Procedures

petSerudecorPelanoitaRsetoN

edisnisegatlovehtfI

erarotalugereht

ehtnrut,tcerrocni

edisstinometsys

ehttcennocsiddna

lortnoccitamuenp

ehtmorfelbac

i.31

scinortcelegolanA

MVDaesU.draob

YLLUFERACot

ehterusaem

nosegatlov

101PJrotcennoc

htiw2&1snip

3nipottcepser

14. Air exchange check

golanAevitcefedaromelborp

ehthtiwmelborpasierehtneht

.melborpladeptoof

ehtsieriwnekorbatahtelbissopsitI

neewtebegatlovehtfI.draobscinortcele

egatlovehtdnaCDV21+si3dna2snip

,noitisopladeptoofehtswollof1nipno
erasegatlovehtfI.eludomscitamuenp

sidraobscinortcelegolanAeht,tnesba

ehthtiwmelborpasierehtroevitcefed

tnesbaCDV21+.ecafretniladeptoof

sidraobscinortcelegolanAehtsetacidni

ton1nipnoegatlovehT.evitcefed

aebdluocladeptoofehtgniwollof

noegatlovehtfI

tonseod1nip

ehtwollof

,noitisopladeptoof

ehtmrofrep

nideniltuoskcehc

ladeptooF.11

fI.kcehCecafretnI

eht,ssapeseht

scinortcelegolanA

.evitcefedsidraob

petSerudecorPelanoitaRsetoN

ehtfoytisnetniehT

nidellortnocsisDEL

YTISNETNIDELeht

retlifcibohpordyhallatsnI

otnokcocpotsyaw-3dna

elamegnahcxeriaeht

ehtesolC.rotcennocreul

a.41

riAehtelbane,kcocpots

dna,noitcnufegnahcxE

riAehttahtyfirev

snrutDELegnahcxE

neerg

eraskcehclanretnilareveS

nafI.metsysehtybedam

egnahcxEriAeht,stsixerorre

dnadelbasideblliwnoitcnuf

ehtfI.dereblliwDELeht

riAeht,KOeraskcehclanretni

eblliwDELsutatsegnahcxE

.neerg

riAehtfidraobyekehttcepsuS
thgiltonlliwDELegnahcxE
morfkcilcyekonsierehtdna

ehT(.yekehtgnisserped

nidelbasidebdluockcilcyek

)unembussecivreSoiduAeht

yalpsidehtfiUPCehttcepsuS

egnahcxEriAehttahtsetacidni

tubderetneneebsahedom

.dehsiugnitxellitssiDELeht

ehtfounembus

ekaM.unemYALPSID

siytisnetniehttahterus

sutatsehteesotyllufpu

anisDELehtfo

eniN.moortilylthgirb

peeknacsrorrelanretni

morfegnahcxEriAeht

riAehtfI.gnitarepo

,DERsiDELegnahcxE

eromroenorofkcehc

gniwollofehtfo

:segassem

ssecxeegnahcxeriA)1ssecxeegnahcxeriA)1

ssecxeegnahcxeriA)1ssecxeegnahcxeriA)1

ssecxeegnahcxeriA)1

eruliafpmupriA)2

eruliafesufpmupriA)3

eruliafrosnesriA)4

mralaerusserpeyE)5

eruliafrosneseyE)6

erusserppmuphgiH)7

erusserppmupriawoL)8

melborpmetsystnegrU)9

Syntec

VitMan

ãã

ã

ãã

page 91

Troubleshooting steps

System Test Procedures

petSerudecorPelanoitaRsetoN

mralaeruliafrosneseyEehT

ehtfIylnopetssihtmrofreP

sieruliafrosneseyE

potehtevomeR.deyalpsid

c.41

dnasrevocmottobdna

riAehtnoDELehttcepsni

DELsihT.evlavegnahcxe

.detanimulliebdluohs

tonseodDELevlavehtfI

metsysehtnrut,etanimulli

tcennocsiddnaedisstino

d.41

lortnocscitamuenpeht

ehterusaeM.elbac

snipneewtebecnatsiser

dluohstI.41dna31

.smho052~erusaem

ehtfiylnopetssihtmrofreP

sieruliafesufpmupriA

ehtecalpeR.deyalpsid

e.41

elihW.eludomscitamuenp

,devomersieludomeht

ahtiw301Fesufecalper

.esufA2/1wen

tsujda,neergsiDELehtfI
erusserpegnahcxEriAeht

yfireV.gHmm05otlevel

setacidniyalpsidehttaht

f.41

derevileddnatniopteseht

tifI.GHmm05sierusserp

kaelaylekilsiereht,tonsi

snoitcennocrognibutehtni

.metsysehtedisni

onsierehttahtsetacidni

seyeehtnodetcetederusserp

.evlavegnahcxEriAehtfoedis

dluocrosneseyeehthguohT

elbissoposlasiti,deliafevah

nonepootdeliafevlavehttaht

siDELehtfI.dnammoc

golanAehtemussa,detanimulli

fI.deliafsahdraobscinortcele

scinortcelegolanAehtgnignahc

ehttcerroctonseoddraob

eludomscitamuenpeht,melborp

.deliafyllautca

ton/eriwnekorbaebyamerehT

neewteb/rotcennocdetaesylluf

ehtdnaeludomscitamuenpeht

ehtfI.draobscinortcelegolanA

neponasetacidniecnatsiser

nikaerbarehtiesiereht,tiucric

sievlavehtro,elbacevlaveht

eht,esacrehtienI.evitcefed

.evitcefedsieludomscitamuenp

,desolcsitisetacidnitiucricehtfI

ehthtiwmelborpaylekilsiereht

golanAehT.scinortceleevird

ebdluohsdraobscinortcele

.decalper

sahpmupegnahcxEriAehtfI

pmupriaehtesuaclliwti,dezies

tonsiesufsihT.nepootesuf

.decalperebtsumdnaelbatteser

wolasipmupegnahcxEriAehT

lliwwolfssecxE.ecivedemulov

ehtwolebpordottiesuac

.erusserpdeificeps

erudecorp

nonepolliw

.dnammoc

.eruliaf

siereht

etomerasierehT

ehttahtytilibissop

tileblliwDELevlav

liaflliwevlavehttub

sihT.nepoot

gnitoohselbuort

evlavehtsemussa

egnahcxeriaehT

detcennocsievlav

fo41&31snipot

.elbaclortnoceht

etomerasierehT

atahtytilibissop

golanAehtnotrohs

draobscinortcele

dnaruccodluoc

ehtnitluserosla

esufpmupriA

wolfonrednU

teseht,snoitidnoc

lautcadnatniop

ebdluohserusserp

nehW.lacitnedi

,wolfelbaredisnoc

tonlliwpmupeht

.pupeekotelbaeb

Troubleshooting steps

page 92

Syntec

VitMan

ãã

ã

ãã

System Test Procedures

petSerudecorPelanoitaRsetoN

egnahcxEriAehT

krowotdengisedsi

A.alunnacaotni

nahtgnineporegral

etelpedlliwag02

foesaelertxenehT

erawtfoslortnoceht

ehtegnahclliw

niebottuodaer

rotomehT.stlov

ebdluohsegatlov

02nahtretaerg

g.41

swolfriatahtyfirevdna

gninepoehtmorf

metsysehtnrut,etanimulli

h.41

lortnocscitamuenpeht

ehterusaeM.elbac

snipneewtebecnatsiser

dluohstI.41dna31

.smho052~erusaem

15. Valve fuse failure checkout

kcocpotsyaw-3ehtnepO

tonseodDELevlavehtfI

tcennocsiddnaedisstino

ehttahtevorplliwnoitcasihT

wollofnacyrtiucriclortnoc

tahtdnaetarwolfnisegnahc

niegakcolblaitraponsiereht

.htapriaeht

stroperyalpsidseulavD/AehT

niegatlovlautcaeht

egatlovrotomehT.lamicedaxeh

fI.000Dnahtretaergebdluohs

,llamsootsiedocdenrutereht

sidraobscinortcelegolanAeht

ehtnisiedocehtfI.evitcefed

scitamuenpeht,deificepsegnar

.evitcefedsieludom

elbaliavaeht

.erusserp

.stlov

petSerudecorPelanoitaRsetoN

ylppusotdesusiesufevlavehT

nosevlavlortnocriaehtotrewop

scitamuenpehttcennocsiD

ehtmorfelbaclortnoc

a.51

.draobscinortcelegolanA

esufevlaVehttahtyfireV

.spotsegassemeruliaf

llA.eludomscitamuenpeht

htiwdeilppuserasevlav

foynafotrohsadnaCDV21+

esufehtnitluserlliwseriweht

spotsegassemehtfI.gninepo

sielbaclortnocehtnehw

ehtfosutatsehT

oslanacesufevlav

gnisudekcehceb

unemSEULAVeht

ESUFehtdna

unembusETATS

ehtnosimelborpeht,devomer

ehtfI.ylbmessascitamuenp

melborpeht,stsisrepegassem

.draobscinortcelegolanAehtno

16. Floppy disk drive checkout

petSerudecorPelanoitaRsetoN

ehtfoenontahtkcehC

nierasegassemgniwollof

:yalpsideht

a.61

detcetorpetirwksiD)1

llufsietteksiD)2

eruliafdaeretteksiD)3

eruliafesufyppolF)4

ãã

ã

Syntec

VitMan

ãã

page 93

Troubleshooting steps

System Test Procedures

petSerudecorPelanoitaRsetoN

eruliafesufyppolFehtfI

siereht,sruccoegassem

ehtnimelborparehtie

niroelbacrewopyppolf

b.61

.flestievirdyppolfeht

dnapotehtevomeR

tcepsnidna.srevocmottob

rewopevirdyppolfeht

.elbac

detcetorpetirwksiDehtfI

yfirev,sraeppaegassem

tonsiksidyppolfehttaht

c.61

etirwsitifI.detcetorpetirw

citsalpehtevom,detcetorp

wodniwehttahtosrettuhs

atcelesrodesolcsi

.yppolftnereffid

rollufsietteksiDehtfI

eruliafdaeretteksiD

atceles,ruccosegassem

d.61

nacstnetnocesohwyppolf

yppolfehttamroF.tsoleb

KSIDTAMROFehtgnizilitu

ksidehtniunembus

.unemsecivres

otsliafetteksidehtfI

asierehtrehtie,tamrof

ehthtiwmelborp

e.61

asierehtroscinortcele

yrT.yppolfehtnitcefed

yppolfdnocesagnittamrof

.gniunitnocerofeb

dnapotehtevomeR

tahtyfireV.srevocmottob

lortnocevirdyppolfeht

ehtnidetaesylmrifsielbac

f.61

ehtnodnaevirdyppolf

.draobscinortceleUPC

onsierehttahtoslayfireV

rewopehtotegamad

.elbac

ehtotegamadsierehtsselnU

eht,elbacrewopevirdyppolf

ebotylekilsievirdetteksid

.evitcefed

citsalpgnidilsllamsasierehT

ehtstcetorpetirwhcihwrettuhs

nepoehtnisitinehwksid

.noitisop

sezilitunaMtiVcetnySehT

ehT.tamrofMBIniseippolf

yppolfehtgnittamroffossecorp

dnaaidemehttahtyfirevlliw

gninoitcnuferaevirdetteksid

.yltcerroc

seriuqernaMtiVcetnySehT

dnocesehT.setteksideerf-rorre

siyppolftnereffidahtiwtpmetta

tahtytilibissopehtetanimileot

.melborpylnoehtsawaidemeht

ereht,tamroftonlliwsetteksidfI

ehthtiwmelborparehtiesi

eht,elbaclortnocevirdyppolf

UPCehtro,evirdyppolf

lortnocehtfI.draobscinortcele

eht,ylreporpdetaessielbac

yppolfehtylekiltsomsimelborp
.evirdyppolfehtecalpeR.evird

ecalper,sniamermelborpehtfI

.draobscinortceleUPCeht

.titeser

tamrofehT

.tsoleb

siesufyppolfehT

oN.elbatteser

spetslanoitidda

otyrassecenera

lliwnoitarepo

noatadllayortsed

ekaM.yppolfeht

yppolfehterus

onsniatnocnesohc

tonnactahtatad

Troubleshooting steps

page 94

Syntec

VitMan

ãã

ã

ãã

System Test Procedures

17. Excess heat check

petSerudecorPelanoitaRsetoN

ehtrofhtapriayramirpehT

retneotriarofsinaMtiVcetnyS

siretlifnafehttahtyfireV

a.71

dnadeggolcrodekcolbton

sitsuahxeecruosthgileht

.dekcolbton

erasnafhtobtahtyfireV

ehtgnivomerybgnitarepo

niamehttcepsnI.revocpot

b.71

ehtnepO.noitatorrofnaf

dnarewardecruosthgil

rofnafblubehttcepsni

.noitator

c.71

esufnaFehttahtyfireV

.yalpsidehtnitonsieruliaf

.taehrevo

eb,retlifnafehthguorht

dnatinuehthguorhtdetalucric

ecruosthgilehttuotsuahxeneht

roegakcolbynA.tcud

ottinuehtesuaclliwnoitcurtsbo

ebtsumti,deliafsahnafrehtiefI

sinafrehtienfI.decalper

esufnaFarofkcehc,gnitarepo

.yalpsidehtnieruliaf

rehtie,deliafsahesufnafehtfI

gniriwnafehtnitrohsasiereht

nafniamehtronafblubehtro

nafniamehT.deziessah

golanAehtotstcennoc

rotcennocaivdraobscinortcele

nafblubehtelihw111PJ

.901PJrotcennocaivstcennoc

ehtwollasrotcennocesehT

ehtsahhcihwnafehtotnoitalosi

ehtecalpeR.melborp

.nafevitcefedetairporppa

siretlifnafehtfI

tievomer,deggolc

.naelcdna

18. Noise Check

petSerudecorPelanoitaRsetoN

otdedivorperaskcolgnippihsehT

mottobdnapotehtevomeR

a.81

owtehttcepsnI.srevoc

mottobehtnoskcolgnippihs

.tinuehtfo

morfeludomscitamuenpehttneverp

eraswercsehtfI.rafootgnivom

eht,ylesoolootroylthgitootdetsujda

etarbivlliweludomscitamuenp

.sissahcehttsniaga

fodetcurtsnocerastnuomrotomehT

ehtnoruoferaerehT.rebburenocilis

stnuomrotomeulbehttcepsnI

b.81

eramehtfoenonerusekamot

.nekorb

,eludomscitamuenpehtfomottob

niamehttnuomotdesueraeerht

,tekcarbtroppusehtotrosserpmoc

ehttnuomotdesueraruofdna

.tekcarbtroppusehtotpmupmuucav

ãã

ã

Syntec

VitMan

ãã

page 95

Troubleshooting steps

System Test Procedures

petSerudecorPelanoitaRsetoN

elbacehtfognituorehttcepsnI

ehtraendnarevoseilbmessa

nA.draobscinortcelegolanA

c.81

.elttaranitluser

d.81

e.81

nacelbacnoitacol-fo-tuo

ehtfognitfihsaesuac

dnaylbmessascitamuenp

.erusserpmetsysehtevresbO

D/ATNERRUCehtesU

ehtniyalpsidSEULAV

ehtyalpsidotunemSEULAV

.eulavevirdtnerruc

.ISP55

stlobtnemhcattallatahtyfireV

sihT.denethgitylerucesera

raerdnatnorfehtsedulcni

.swercsgnitnuomlenap

nacevlavfeilerISP05ehtfoeruliafA

atagninnurmetsysehtnitluser

sihT.dedeennahterusserprehgih

eromesuaclliwerusserplanoitidda

tisarosserpmocniamehtninoitom
lanoitiddanitluserlliwdnasetarepo

deyalpsideulavehT.tinuehtniesion

dna54neewtebebdluohsevirDsa

Troubleshooting steps

page 96

Syntec

VitMan

ãã

ã

ãã

System Adjustment Procedures

Syntec

VitMan

ãã

ã

ãã

page 97

System Adjustment Procedures

Adjust Pressure Regulators

1. Remove the top system cover.

2. Turn the VitMan on. Install a cassette. Plug the aspiration port on the cassette.

3. Enter menu mode by pressing the display button. Select Values from the Main Menu.
Select Current A/D Values from the Values Menu (see figure 1).

Note: The 3 pressure regulators and 1 pressure relied valve all have locking adjustment

knobs. In order to adjust them, it is necessary to pull the knob away from the regulator
body. It is usually necessary to disconnect and reconnect the pressure gage to the
regulator output several times (or cause a change in flow load in some other manner)
in order to receive a true pressure reading after the regulator has been adjusted. The
internal mechanism needs to accommodate to the new adjustment and several read­justments may be needed before the regulator will work at the desired pressure.

4. Adjust the relief valve to obtain a reading of 2585 (2585 mmHg = 50 psi) on the drive
sensor. This reading can be taken from the A/D Values screen on the front panel
display. The adjustment can be checked by disconnecting and reconnecting the drive
sensor tube labeled “4” at the quick disconnect. It should return to approximately the
correct value after the tube has been reconnected.

5. Measure the vacuum regulator pilot pressure. It is most easily accessed at the output
port of the vac. reg. regulator. Adjust the vac. reg. regulator to 20 psi.

6. Measure the cylinder operating pressure. It is most easily accessed at the tube exiting
the pneumatic module labeled “1”. Connect the pressure gage to the tube at the quick
disconnect. By pressing the aspiration pinch valve button, on the system front panel,
pressure will be alternately supplied to this tube. Adjust the cylinder regulator to 30
psi. Simply causing the system to open and close the aspiration pinch valve (causing
pressure to be routed to then vented away from the pressure gage) will change the
load enough on the regulator to allow for a stable adjustment.

7. Measure the vitrector operating pressure. It is most easily accessed at the vitrector
output on the system front panel. By pressing the manual valve actuation button,
located on the side of the vitrector valve, pressure will be supplied to the vitrector
output. Adjust the vitrector regulator to 42 psi. Opening and closing the vitrector valve
(causing pressure to be routed to then vented away from the pressure gage) with the
manual actuation button will change the load enough on the regulator to allow for a
stable adjustment.

8. Replace the top system cover.

cylinder
regulator

vac. reg.
regulator

relief
Valve

Adjust Pressure Regulators

vitrector
regulator

page 98

Figure 1

Syntec

“Drive”
sensor
reading

VitMan

ãã

ã

ãã

System Adjustment Procedures

Adjust Vacuum Regulator

1. Remove the top system cover.

2. Loosen 2 screws holding the black cover to the vacuum regulator. Remove the
vacuum regulator cover. Note the position of the vibration pad on the cover for later
replacement.

3. Turn the VitMan on. Install a cassette. Plug the aspiration port on the cassette. Turn
the aspiration surgical function on. Adjust maximum aspiration to 500.

4. Enter menu mode by pressing the display button. Select Values from the Main Menu.
Select Current A/D Values from the Values Menu (see figure 1).

5. Measure the vacuum regulator pilot pressure. It is most easily accessed at the output
port of the vac. reg. regulator located on the regulator manifold in the pneumatic
module. The pressure should be set to 20 psi. If the pressure in incorrect, adjust the
regulator by turning the knob. Note it should be necessary to unlock the knob by
pulling away from the regulator body. It is usually necessary to disconnect and recon­nect the pressure gage to the regulator output several times in order to receive a true
pressure reading after the regulator has been adjusted. The internal mechanism
needs to accommodate to the new adjustment and several readjustments may be
needed before the regulator will work at the desired pressure.

6. Measure the power voltage to the vacuum regulator. The voltage is most easily ac­cessed at the wire connector on the vacuum regulator. Measure between pins 1 and

3. The voltage should be 12Vdc. The 12Vdc supplied to the vacuum regulator is the
same as that used for a lot of the sensitive analog circuitry on the analog electronics
board. So if the rest of the VitMan seems to be operating, and the 12Vdc is low or
missing, suspect a problem with the wires or the connector pins going to the analog
electronics board.

7. Fully depress the foot pedal (it helps to put a weight on the foot pedal). The vacuum
level in the 50cc chamber will eventually reach 500 (mmHg). Even if the vacuum
regulator adjustment is incorrect the system software will try to compensate. The
software will slowly adjust the command (voltage) given to the vacuum regulator until
the 50cc chamber reads 500. If the system fails to reach 500, first calibrate the foot
pedal. This is accomplished by entering the Service Menu from the Main Menu.
Select Calibration Routines from the Service Menu. Then select Calibrate Foot
Pedal from the Calibration Routines menu. Follow the directions on the screen. If
the system still fails to reach 500 the vacuum regulator may be grossly out of adjust­ment, the software may not be able to adjust the voltage high enough to reach 500. If
this is the case, adjust the potentiometer marked “S” on the vacuum regulator circuit
board clockwise (as viewed from the end with the adjustment) in 1/4 turn increments
until the system software is able to reach 500.

8. Measure the control voltage to the vacuum regulator between pins 2 and 3 on the wire
connector. The reading should be 3.87Vdc. If the voltage is high, turn the potentiom­eter on the vacuum regulator circuit board marked “S” clockwise. Wait for the system
software to return the vacuum to 500. Likewise, if the voltage is low then adjust the “S”
pot counter clockwise. After the system has returned to 500, take a new voltage read­ing and adjust as necessary.

Syntec

VitMan

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page 99

Adjust Vacuum Regulator