Serv o S creen 390
Service Manual
E382 E394E 061 01 02 02
Important
Important
Servo Screen 390
General
The documentation for the Servo Screen 390
consists of:
• Operating Manual
• Service Manual
• Spare Parts List
The Operating Manual is an indispensable
complement to the Service Manual for proper
servicing.
As the Servo Screen 390 is a part of the Servo
Ventilator system, there are also other
documents that can be useful when servicing
the Servo Screen 390:
• Servo Ventilator 300/300A
– Operating Manual
– Service Manual
– Circuit Diagram
– Reference Manual, Computer Interface
• Servo Ventilator 900C/E
– Operating Manual
– Service Manual
– Circuit Diagram
– Reference Manual, SCM 990
Text inside a box is used to highlight
important information.
In addition to the Important information given
here and in the related documents (e. g. in the
Operating Manual), always pay attention to
applicable local and national regulations.
Responsibility for the safe functioning of the
equipment reverts to the owner or user in all
cases in which service or repair has been done
by a non-professional or by persons who are
not employed by or authorized by Siemens,
and when the equipment is used for other than
its intended purpose.
There are two different versions of the Servo
Screen 390:
• Serial No. 10000 or lower – Equipped with
Computer board PC 1662 and a software
memory card of PC Card™-type.
Hazard notices
Make sure that all cables are disconnected
from the connection ports when disassembling
or assembling the Servo Screen 390.
Service
When working with ESD sensitive components, always use a grounded wrist band and
grounded work surface. Adequate service tools
must also be used.
Worn-out batteries must be returned
to the place of purchase or to a place
where they can be safely disposed
of. Batteries must not be disposed
of with ordinary waste. All other
parts shall be discarded according to
hospital rules and in an environmentally safe way.
Functional check
After any service intervention in the Servo
Screen 390, perform a Functional check
according to the instructions in the Operating
Manual.
To responsible service personnel
The contents of this document are not binding.
If any significant difference is found between
the product and this document, please contact
Siemens for further information.
We reserve the right to modify products
without amending this document or advising
the user.
Only personnel authorized by Siemens shall be
permitted to service or repair the Servo Screen
390. Only Siemens-Elema genuine spare parts
must be used. PC boards (spare parts) must
always be kept in a package for sensitive
electronic devices. Siemens will not otherwise
assume responsibility for the materials used,
the work performed, or any possible
consequences of same.
Pb
• Serial No. 10001 or higher – Equipped with
Computer board PC 1835 and a software
memory card of CompactFlash™-type.
All information in this Service Manual is valid
for both versions unless stated otherwise.
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Contents
Contents
1. Introduction....................................................................... 5
2. Description of functions................................................... 11
3. Disassembly and assembly.............................................. 17
4. Service procedures ........................................................... 25
1
2
3
4
5. Troubleshooting ................................................................ 37
6. Index .................................................................................. 41
7. Diagrams............................................................................ 45
5
6
7
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Notes
Notes
Servo Screen 390
4
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1. Introduction
1. Introduction
General .................................................... 6
Hardware overview ................................. 7
Main sections ..................................... 8
Display section ................................... 8
Computer section............................... 9
Firmware/software overview................... 9
Firmware ............................................ 9
Software............................................. 9
1
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1. Introduction
1
Servo Screen 390
General
Servo Screen 390 is a computer unit that
reads information from a ventilator, makes
calculations, and presents the information to
the operator in a clear, logically organized
manner.
The primary purpose of Servo Screen 390 is
to provide a central location for the display of
all parameter information from the ventilator.
It provides information on system and
patient conditions, logically assembled in a
way that presumes presentations including
curves.
Servo Screen 390 does not control the
ventilator or any other medical equipment.
SS-000X
Servo Screen 390 is compatible with the
following ventilator systems:
• Servo Ventilator 300/300A
• Servo Ventilator 900C/E systems that use
Servo Computer Module 990 (SCM 990)
More information about the compatible
ventilators can be found in the chapter
“Technical specifications” in the Operating
Manual.
6
SS-001X
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1. Introduction
Hardware overview
Servo Screen 390 unit is a small, compact,
ergonomically-designed computer unit. It is
manufactured from materials suitable for
use in a clinical environment and is designed
specifically for integration with existing
ventilator equipment.
1
SS-002X
4
3
1
2
The primary features of the Servo Screen
390 are:
• An electro-luminescent, mono-chromatic
screen (1) which provides displays that are
clearly visible within the bedside working
area.
• A power on/off switch (2).
• A single operator control including a pulse
generator in the form of an easy-to-use
knob (3), which can be only turned or
pressed.
• A removable software memory card under
the protective cover (4) for easy software
updates. More information about software
upgrading can be found in the chapter 4,
“Service procedures”.
• Connection ports as follows:
5
SS-003X
– KBD port (5) for connection of a keyboard.
For service use only.
– PRINTER port (6) for connection of a
printer.
– COM port (7) for serial communication
with other equipment. For future applications. Dependent on the software
version.
– VENT port (8) for serial communication
with the ventilator.
– CRT port (9) for connection of an external
monitor.
6
7
89
10
– PWR port (10) for connection to a power
source.
More information about the connection ports
can be found in the chapter 7, “Diagrams”.
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1. Introduction
1
Servo Screen 390
Main sections
Servo Screen 390 can be separated into two
main sections:
• Display section (1)
2
SS-032X
• Computer section (2)
The support arm (3) is always used to mount
the Servo Screen 390 on a ventilator cart or
wall rail.
1
3
Display section
The anti-reflex coated front panel filter (4)
protects the display (5) and makes it easy to
keep the display clean.
SS-033X
To reduce EMC radiation to the environment, a cover plate (6) is mounted at the
rear of the display.
4
5
6
8
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1. Introduction
Computer section
8
SS-034X
7
9
The two PC boards mounted in the computer
section are:
• Computer board (7), containing microprocessor, SS390-BIOS, internal memory
and an interface for the software memory
card. All connection ports except the power
port are mounted on the computer board.
There are two different versions of the
Computer board (7), PC 1662 and PC 1835.
• Adapter board PC 1663 (8), containing
voltage distribution and display interface.
A fan (9) inside the computer unit provides
forced air cooling for the PC boards. The fan
has a rubber suspension to reduce noise.
1
Firmware/software overview
Firmware
The SS390-BIOS on the computer board
initializes the system and starts the
application software.
The SS390-BIOS can be upgraded if
required.
Software
The operating system and the Servo Screen
application software is supplied on a removable software memory card. The user
interface provided by this software is
described in the Operating Manual.
The software memory card is very easy to
replace in case of future software upgrades.
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1. Introduction
Notes
1
Servo Screen 390
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2. Description of functions
2.Description of functions
General .................................................... 12
Power supply........................................... 12
With Servo Ventilator 300/300A ......... 12
With Servo Ventilator 900C/E ............. 12
Adapter board.......................................... 13
General............................................... 13
Voltage distribution............................. 13
Signal adaption ................................... 13
Brightness control .............................. 13
Fan control.......................................... 13
Board identity ..................................... 13
Internal power cable ........................... 13
ON/OFF switch .................................. 14
Display connection cable .................... 14
Fan ..................................................... 14
Computer board ...................................... 14
General............................................... 14
Software memory card....................... 15
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Battery................................................ 15
Pulse generator .................................. 16
Connection ports ................................ 16
Display..................................................... 16
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2. Description of functions
Servo Screen 390
General
The text in this chapter refers to the block
diagram in chapter 7, “Diagrams” (on the
inside of the back cover).
2
Power supply
With Servo Ventilator 300/300A
The power supply is connected to the power
inlet port PWR (P21) on Servo Screen 390.
The internal power cable connects the
power inlet port to the A
The PWR port is described in chapter
7, “Diagrams”.
Power to the Servo Screen 390 is supplied
from the Servo Ventilator 300/300A auxiliary
equipment output N78.
Connector N78 is described (output signals
and limitations) in the Servo Ventilator 300/
300A – Service Manual.
With Servo Ventilator 900C/E
The power supply is connected to the power
inlet port PWR (P21) on Servo Screen 390.
The internal power cable connects the
power inlet port to the A
The PWR port is described in chapter
7, “Diagrams”.
DAPTER BOARD at P18.
DAPTER BOARD at P18.
Power to the Servo Screen 390 is supplied
from an AC Power Adapter 124 when used
with a Servo Ventilator 900C/E.
Technical specifications for the AC Power
Adapter 124:
Mains power supply ...........100 – 240 V
Mains frequency.................50 – 60 Hz
ON/OFF-indication ..............Green LED indi-
cates power on
Output voltage range..........24 V DC ±10%
Output power.....................max. 50 W
Earth leakage current,
normal condition
(IEC 601-1-1) .......................30 A
Fuse (internal).....................2.4 A slow
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2. Description of functions
Adapter board
General
The functional blocks on the A
PC 1663 are:
OLTAGE DISTRIBUTION
•V
•SIGNAL ADAPTION
•BRIGHTNESS CONTROL
•FAN CONTROL
•BOARD IDENTITY
Further functional blocks connected to the
ADAPTER BOARD are:
NTERNAL POWER CABLE
•I
•ON/OFF SWITCH
•DISPLAY CONNECTION CABLES
DAPTER BOARD
Signal adaption
The control signals from the C
OMPUTER BOARD
PC 1662/PC 1835 to the display are adapted
in this block and furthered to the main block
DISPLAY via P20.
Brightness control
The brightness in the display can be selected
using the S
YSTEM MENU in the application
software. The selected brightness is then
controlled via this block and furthered to the
main block DISPLAY via P19.
When exchanging PC 1663, a setting of the
brightness level may be required, refer to
chapter "3. Disassembly and assembly",
section "Assembling the computer section".
2
•FAN
The ADAPTER BOARD is connected directly to
the COMPUTER BOARD via N5.
Voltage distribution
The inlet power is fused at F1 (3.15 A fast).
Replacing the fuse is described in chapter 4,
“Service procedures”.
The different voltage levels used in the
Servo Screen 390 are regulated by and
distributed from this block.
The distributed voltage levels are:
1. +12 V (±5%), max. 2.6 A. An overvoltage
protection cuts the voltage distribution at
typ. 14.6 V.
2. +5 V (±3%), max. 3.0 A. An overvoltage
protection cuts the voltage distribution at
typ. 6.2 V.
Fan control
An NTC-resistor on PC 1663 senses the air
temperature inside the Servo Screen 390.
If the air temperature inside the unit exceeds
approx. 53°C (127°F ), the fan is switched on.
When the temperature drops below approx.
45°C (113°F), the fan is switched off.
Board identity
PC 1663 is equipped with a B
OARD IDENTITY
function that makes it possible for the
COMPUTER BOARD PC 1662/PC 1835 to
recognize the PC 1663 version. This function
is intended for possible future versions, e.g.
new types of displays.
Internal power cable
The internal power cable connects the
PC 1663 (P18) with the power inlet port
PWR (P21).
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2. Description of functions
Servo Screen 390
ON/OFF switch
The O
N/OFF SWITCH turns the power supply
to the Servo Screen 390 on or off. This is the
only device for turning the unit on or off. No
other action is needed, e. g. when shutting
down the Servo Screen 390.
Display connection cables
2
The two D
ISPLAY CONNECTION CABLES connect
the ADAPTER BOARD to the DISPLAY.
One flat cable connects S
IGNAL ADAPTION
signals from P20 on PC 1662/PC 1835 to
display connector J1.
One cable connects B
RIGHTNESS CONTROL
signals from P19 on PC 1662/PC 1835 to
display connectors J2 and J3.
Computer board
General
There are two different versions of the
OMPUTER BOARD:
C
• PC 1662. Factory mounted on Servo
Screen 390 with Serial No. 10000 or lower.
Software memory card of PC Card™-type
is used.
• PC 1835. Factory mounted on Servo
Screen 390 with Serial No. 10001 or higher.
Software memory card of CompactFlash™type is used.
The two PC boards are interchangable. Refer
to further information in the Spare Parts List
when replacing a PC 1662 with a PC 1835.
The functional blocks on the C
PC 1662/PC 1835 are:
OMPUTER BOARD
Fan
The Servo Screen 390 is equipped with a
AN. The fan is controlled by the block FAN
F
CONTROL.
The purpose of this fan is to provide forced
air cooling inside the unit. The air stream
enters through the ventilation holes in the
lower part of the unit and exits through the
ventilation holes in the upper part of the unit.
ICROPROCESSOR
•M
– 80486SX, 25 MHz on PC 1662
– Pentium, 166 MHz on PC 1835.
• VGA C
ONTROLLER
•BUS INTERFACE including:
– Diskette drive interface (not used)
– Hard disk interface (for test purposes
only)
– Two serial ports
– One parallel port
– Keyboard controller
ULSE GENERATOR INTERFACE
•P
•VOLTAGE & FUNCTION MONITORING
•INTERNAL MEMORY. The size of the internal
memory is optimized for the software
version. The internal memory is mounted
on a standard socket and can be replaced
if required by future software upgrades.
14
IDEO MEMORY
•V
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2. Description of functions
• SRAM (only on PC 1662). This battery
backed up memory contains software
settings (e.g. battery replacement date),
RENDS and the EVENT LIST.
T
Note – On PC 1835, T
RENDS and EVENT LIST
are stored on the CompactFlash™ card
and thus not dependent on the battery.
OFTWARE MEMORY CARD INTERFACE
•S
• SS390-BIOS. Contains low-level software
(BIOS, drivers, start-up screen including
software loading messages and initial
program load of the application software).
There are two different versions of the
SS390-BIOS:
– SS390-PROM mounted on PC 1662.
This PROM is mounted on a PROM
socket and can be upgraded (replaced) if
required.
– SS390-FLASH mounted on PC 1835.
This FLASH memory can be upgraded
(new software downloaded) if required.
Refer to chapter 4,“Service procedures” for
furher information regarding upgrades.
Software memory card
The S
OFTWARE MEMORY CARD contains the
operating system and the Servo Screen 390
application software. Loading of the software into the INTERNAL MEMORY is initialized
by the SS390-BIOS during start-up.
There are two different versions of the
OFTWARE MEMORY CARD:
S
• PC Card™ used on PC 1662.
• CompactFlash™-card used on PC 1835.
Note – As patient related T
RENDS and unit
related EVENT LIST are stored on the
CompactFlash-card, it is not recommended
to move a CompactFlash-card between
different units.
The software on the memory card is
specifically designed for Servo Screen 390,
and cannot be used on a standard PC.
The software memory card is easy to
replace in case of future software upgrades.
See chapter 4, “Service procedures”.
2
The computer is equipped with procedures
for self-testing and the self-test result can be
displayed in the S
ERVICE MENU. See chapter
4, “Service procedures”.
Further functional blocks connected to the
OMPUTER BOARD are:
C
OFTWARE MEMORY CARD
•S
•BATTERY
•PULSE GENERATOR
•CONNECTION PORTS
The COMPUTER BOARD is connected directly to
the ADAPTER BOARD via P5.
Battery
The lithium B
ATTERY (3.6 V) is used to back up
the computer setup stored in the CMOSRAM and, for PC 1662, also to back up the
SRAM. If the battery is disconnected,
factory default settings will be used next
time the Servo Screen 390 is started.
The battery must be replaced every three
years. The message ”Replace Servo Screen
390 battery” in the message window
indicates when the battery should be
replaced. A new three-year period will start
when the battery replacement has been
confirmed with the B
ATTERY CHANGE icon in
the SERVICE MENU.
Replacing the battery and Battery change
confirmation is described in chapter
4, “Service procedures”.
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2. Description of functions
Servo Screen 390
Pulse generator
The P
(physically mounted as a part of the display
section) is the only necessary device
available to a clinical user for operating the
application software. The pulse generator
itself does not include any functions other
than interaction with the software.
ULSE GENERATOR with its CONTROL KNOB
2
Connection ports
ONNECTION PORTS except the power port
All C
are mounted on the COMPUTER BOARD. More
information about the connection ports can
be found in chapter 7, “Diagrams”.
Display
A monochrome electro-illuminating DISPLAY is
used in this version of Servo Screen 390.
Display connection cables connect the
display to the block S
connector J1 and to the block BRIGHTNESS
CONTROL via connectors J2 and J3.
The unit is prepared for possible future
versions with other display types.
IGNAL ADAPTION via
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3. Disassembly and assembly
Disassembly and assembly
General .................................................... 18
Handling PC boards ................................. 18
Separating the display section
from the computer section...................... 19
Assembling the display section
with the computer section....................... 19
Disassembling the display section........... 20
Pulse generator .................................. 20
Display................................................ 20
Front panel filter ................................. 21
Assembling the display section ............... 21
Disassembling the computer section ...... 22
Computer board PC 1662/PC 1835
and Adapter board PC 1663................ 22
Fan ..................................................... 23
Assembling the computer section........... 23
3
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3. Disassembly and assembly
Servo Screen 390
General
This chapter describes disassembly and
assembly of some of the main parts of the
Servo Screen 390. The drawings in the
Spare parts list are also very useful as a
guide when disassembling and assembling
the Servo Screen 390.
Before disassembling or assembling the
Servo Screen 390, make sure that all
connection cables are disconnected from
the connection ports of Servo Screen
390.
3
After any service intervention in the
Servo Screen 390, perform a Functional
check according to instructions in the
Operating manual.
Handling PC boards
The PC boards contain components that are
highly sensitive to static electricity.
Those who come into contact with circuit
boards containing sensitive components
must take certain precautions to avoid
damaging the components (ESD protection).
When working with ESD sensitive
components, always use a grounded wrist
band and grounded work surface. Adequate
service tools must also be used.
PC boards (spare parts) must always be kept
in protective packaging for sensitive
electronic devices.
PC boards must not be
inserted or removed while
power is applied to the PC
boards.
Remove and insert the
PC boards very
carefully to avoid
damage to the
connectors.
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3. Disassembly and assembly
Separating the display section
from the computer section
2
SS-035X
• Remove the six screws (1).
• Carefully separate the display section (2)
from the computer section (3) as much as
is needed to make the pulse generator
connector N12 on PC 1662 and connectors
N1, N2 and N3 at the rear of the display
accessible.
• Disconnect the connectors mentioned
above.
• The display section is now separated from
the computer section.
3
3
1
Assembling the display section with the computer section
The procedure for assembling the display
section with the computer section is the
reverse of the separation procedure
described above.
Make sure that the rubber sealing strips are
mounted on the display section to obtain a
good seal between the sections.
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3. Disassembly and assembly
Servo Screen 390
Disassembling the display
section
Pulse generator
3
S-036X
1
2
3
4
• Separate the display section from the
computer section as previously described.
• Pull off the control knob (1) from the pulse
generator shaft.
• Remove the nut (2) and the washer (3) and
lift off the pulse generator (4).
Display
SS-037X
4
3
5
2
1
• Separate the display section from the
computer section as previously described.
• Remove the four nuts (1) and the eight
washers (2 and 3).
• Lift off the complete display (4).
• Note the four spacers (5). Make sure that
they are mounted when assembling the
display.
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3. Disassembly and assembly
Front panel filter
SS-038X
2
6
4
5
3
1
• Separate the display section from the
computer section as previously described.
• Pull off the control knob from the pulse
generator shaft.
• Remove the rubber sealing strips (1).
• Remove the screws (2) holding the
bars (3).
• Lift off the bars (3) and the copper
plates (4).
• Lift off the support plate (5) including the
display.
• Lift off the front panel filter (6).
3
Assembling the display
section
The procedure for assembling the display
section is the reverse of the disassembly
procedure described above.
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3. Disassembly and assembly
Servo Screen 390
Disassembling the
computer section
Computer board PC 1662/PC 1835 and
Adapter board PC 1663
3
2
N18
N15
N16
3 4
The PC boards are connected to each other
in such a way that its not possible to remove
just one of them from the computer section.
Both PC boards must be removed at the
same time.
• Remove the software memory card.
• Separate the display section from the
computer section as previously described.
• Remove the eight spacer screws (1)
holding the connection ports to the rear
cover. Do not remove the screws holding
the power port (PWR).
• Disconnect the internal power cable
connector N18 from P18 on PC 1663.
• Disconnect the battery connector N0 from
P13/P14 on PC 1662/PC 1835.
Note – Computer setup information stored
in the CMOS-RAM, and for PC 1662 also
information stored in the SRAM, will be
erased when the battery is disconnected.
Factory default settings will be used next
time the Servo Screen 390 is turned on.
• Remove the two nuts (2) and washers (3).
SS-039X
The two different versions of the
computer board are interchangable.
Refer to further information in the Spare
Parts List when replacing a PC 1662 with
a PC 1835.
22
N0
• Remove the two screws (4) holding
PC 1662/PC 1835.
• Carefully lift the PC boards from the
computer section as much as needed to
make the ON/OFF switch connector N15
1
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at P15 and the fan connector N16 at P16
on PC 1663 accessible.
• Disconnect the connectors mentioned
above.
• Lift off the PC boards.
• Carefully separate the computer board
from the adapter board.
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3. Disassembly and assembly
Fan
1
S-040X
3
2
• Remove the PC boards as previously
described.
• Remove the two nuts (1) and washers (2)
holding the fan bracket and lift off the
fan (3).
Assembling the computer
section
The procedure for assembling the computer
section is the reverse of the disassembly
procedure described above.
Normally the screen area will light up
immediately when the power switch is set
to On. If the screen area is not lit up until the
Startup display appears and the startup beep
sounds, this may be due to an undefined
brightness value stored on the Adapter
board. This may be the case after exchange
of Adapter board PC 1663.
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Adjust the brightness setting as follows:
• Set the power switch to On and wait until
the Main menu icons are visible.
• Select SYSTEM DATA and CHANGE SET-
UP.
• Change the Brightness level (at least one
step).
• Select CHANGE EXIT and SAVE SET-UP.
Save the new setting.
• Set the power switch to Off and wait a
few seconds.
• Set the power switch to On and check that
the screen area is lit up immediately.
• If required, repeat the steps above to set
the Brightness level to the previous value.
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3. Disassembly and assembly
Notes
3
Servo Screen 390
24
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4. Service procedures
Service procedures
General ....................................................26
Using the Service Menu .......................... 27
Service access code ...........................27
Service information display................. 28
Event list ............................................ 28
Battery change-confirmation............... 29
Using a keyboard..................................... 30
Replacing the software memory card......31
Replacing the SS390-PROM
on PC 1662.............................................. 32
Upgrading the SS390-FLASH
on PC 1835.............................................. 32
Replacing the internal memory................ 33
Replacing the battery............................... 34
Replacing the fuse................................... 35
Adjusting the support arm .......................36
Joint ................................................... 36
Rail clamp ........................................... 36
4
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4. Service procedures
Servo Screen 390
General
This chapter describes, step-by-step, some
service procedures that may be necessary
to perform on the Servo Screen 390. Some
of these service procedures require disassembling the Servo Screen 390. If so,
please see chapter 3, “Disassembly and
assembly” for instructions.
Before disassembling or assembling the
Servo Screen 390, make sure that all
connection cables are disconnected from
the connection ports of Servo Screen
390.
After any service intervention in the
Servo Screen 390, perform a Functional
check according to the instructions in the
Operating manual.
4
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4. Service procedures
Using the Service Menu
The Service Menu serves three purposes:
– It gives access to the Service information
display.
– It gives access to the E
– It gives access to the B
This icon is selected to confirm that the
Servo Screen 390 battery has been
replaced.
Service Access Code
The Service Access Code is intended only as
a ”separator” between clinical use and
technical use of the Servo Screen 390. It is
not a secret or personal code and it cannot
be changed.
• Select the S
the Operating Manual.
• Enter the Service Access Code on the
numerical entry keypad displayed on the
Servo Screen 390. The Service Access
Code is:
ERVICE MENU as described in
VENT LIST.
ATTERY CHANGE icon.
4
300
• Turn the control knob until the ACCEPT key
is marked.
• Press the control knob. The Service
information display is now shown.
The Service menu icons are also displayed.
E382 E394E 061 01 02 02
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27
4. Service procedures
Servo Screen 390
Service information display
The Service information display shows some
technical data from the connected ventilator
and from the Servo Screen 390.
If the Servo Screen 390 is connected to a
Servo Ventilator 300/300A, PROM versions
in the SV 300/300A are shown on this
display.
The Service information display will also
show the SS390-BIOS version and the
application software version of the Servo
Screen 390.
4
Event list
The event list in Servo Screen 390 logs
technical errors, abnormal events and
displayed messages.
• Enter the Service Menu, using the Service
Access Code as previously described.
• Turn the control knob until the E
icon is marked.
• Press the control knob. The event list is
now displayed.
• Use the N
select a page in the event list.
The message string contains up to six
information units:
EXT PAGE and PREV. PAGE icons to
VENT LIST
28
– Date
– Time
– Event type
– File line
– Error message
– Error code (if available)
Siemens-Elema AB
E382 E394E 061 01 02 02
Servo Screen 390
4. Service procedures
Battery change-confirmation
The backup battery in the Servo Screen 390
must be replaced when the information
”Replace Servo Screen 390 battery” is
displayed in the Message window (every
three years). Replacement is described in
the section “Replacing the battery” in this
chapter.
Battery replacement must be confirmed to
remove the ”Replace Servo Screen 390
battery” message. This confirmation also
sets the time used for controlling the
apperance of the message. The message
will appear after startup:
– three years after the latest Battery change-
confirmation
or
– if the battery has been disconnected.
Note – It is not recommended to re-connect
a used battery and perform the necessary
Battery change-confirmation. The fixed time
interval until next appearance of the
”Replace Servo Screen 390 battery” is
selected for a fully charged battery.
Confirm battery change as follows:
• Connect the Servo Screen 390 to a
ventilator.
• Start the ventilator and the Servo Screen
390.
• Check that the Time and Date settings
displayed in Servo Screen 390 are correct.
If necessary, adjust according to the
instructions in the Operating Manual.
• Enter the Service Menu, using the Service
Access Code as previously described.
4
E382 E394E 061 01 02 02
• Turn the control knob until the B
CHANGE icon is marked.
• Press the control knob. The battery
replacement is now confirmed. The
message in the Message window will
disappear immediately, but the B
CHANGE icon will not disappear until another
menu is selected.
Siemens-Elema AB
ATTERY
ATTERY
29
4. Service procedures
Servo Screen 390
Using a keyboard
A standard AT keyboard can be connected
to the Servo Screen 390.
When the keyboard is connected, it is ready
for use. No setting is needed. The keyboard
can be used as a substitute for the control
knob/pulse generator, but it can also be used
in combination with the control knob/pulse
generator.
The following keys are used to simulate the
control knob:
• Left-arrow key = Turning the control knob
counter-clockwise.
• Right-arrow key = Turning the control knob
clockwise.
4
• Enter key = Pressing the control knob.
The keyboard can be used when trouble-
shooting a possible malfunction in the
control knob function, for example. If there is
a malfunction when using the control knob/
pulse generator and this malfunction does
not appear when using a connected
keyboard, the error may be in the pulse
generator or in the pulse generator interface.
The keyboard can also be used in combination with the ”on-screen keyboard” when
entering or changing a patient ID. Only upper
case letters will be displayed in the Patient
ID field.
30
Siemens-Elema AB
E382 E394E 061 01 02 02
Servo Screen 390
4. Service procedures
Replacing the software
memory card
• Make sure that the Servo Screen 390 is
turned off.
• Remove the protective cover (1).
S-041X
2
3
1
• Push the button (2) to release the software
memory card from the memory card slot.
• Pull out the software memory card (3).
• Put the desired software memory card
into the memory card slot. A mechanical
key on the card and in the slot prevents it
from being fully inserted in a wrong
position.
• Push the software memory card into the
slot. Mount the protective cover (1).
The software memory card is now replaced.
Perform a Functional check according to the
instructions in the Operating Manual.
There are two different versions of the
software memory card:
– PC Card™ used on Servo Screen 390
equipped with Computer board PC 1662.
4
– CompactFlash™ used on Servo Screen
390 equipped with Computer board
PC 1835. Note – As patient related T
and unit related EVENT LIST are stored on
the CompactFlash-card, it is not
recommended to move a CompactFlash-
card between different units.
The procedure for replacing the software
memory card is the same for the two
different versions
RENDS
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31
4. Service procedures
Servo Screen 390
Replacing the SS390-PROM
on PC 1662
Before performing this service action, read
the sections “General” and “Handling PC
boards” in chapter 3, “Disassembly and
assembly”.
• Remove the PC boards as described in
chapter 3, “Disassembly and assembly”.
• Use an extraction tool to remove the old
SS390-PROM (1) mounted at the rear of
PC 1662.
• Mount the new SS390-PROM into the
socket. Make sure that it is correctly
mounted and that no leg has been bent or
broken.
4
S-042X
• Assemble the Servo Screen 390 as
described in chapter 3, “Disassembly and
assembly”.
1
The SS390-PROM is now replaced.
Perform a Functional check according to the
instructions in the Operating Manual.
Upgrading the SS390-FLASH
on PC 1835
A Service CompactFlash™-card will be used
to upgrade the SS390-FLASH on PC 1835.
Upgrade instructions will be delivered with
this Service card.
32
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E382 E394E 061 01 02 02
Servo Screen 390
4. Service procedures
Replacing the internal
memory
Before performing this service action, read
the sections “General” and “Handling PC
boards” in chapter 3, “Disassembly and
assembly”.
Note – This procedure and illustration shows
SIMM chip on PC 1662. The board PC 1835
is equipped with a different type of SIMM
chip but the replacement procedure is still
the same. PC 1835 is also prepared for and
can, in the future, be equipped with SIMM
chips mounted on the rear side of the PC
board. If so, the PC board does not have to
be removed when replacing the internal
memory.
SS-053X
• Remove the PC boards as described in
chapter 3, “Disassembly and assembly”.
• Remove the old SIMM chip (1) mounted
on PC 1662/PC 1835.
• Mount the new SIMM chip into the
socket.
1
• Assemble the Servo Screen 390 as
described in chapter 3, “Disassembly and
assembly”.
The internal memory is now replaced.
Perform a Functional check according to the
instructions in the Operating Manual.
4
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33
4. Service procedures
Servo Screen 390
Replacing the battery
4
P 13
P 14
3
2
1
4
When the information ”Replace Servo
Screen 390 battery” is displayed in the
Message window, the battery must be
replaced.
• Make sure that the Servo Screen 390 is
turned off.
• Loosen the two screws (1).
• Carefully lift off the battery cover including
battery (2), but do not remove the cable
connector (3) from PC 1662/PC 1835.
Note – Computer setup information stored
in the CMOS-RAM, and for PC 1662 also
information stored in the SRAM, will be
erased if the connector is removed. In that
case, factory default settings will be used
next time the Servo Screen 390 is turned
on.
• There are two equal battery connectors
connected in parallell (P13 and P14) on
PC 1662/PC 1835. Connect the new
battery (4) to the unused connector. The
battery backup functions are now secured
by the new battery.
SS-043X
P 13
P 14
• Cut the cable tie holding the old battery to
the battery cover. Mount the battery cover
to the new battery using a new cable tie.
• Disconnect and remove the old battery.
• Mount the battery cover including battery
on Servo Screen 390.
The old battery must be disposed of
according to local or national regulations.
Battery replacement must be confirmed in
ERVICE MENU within the application
the S
software. This is described in the section
“Using the Service Menu” in this chapter.
The battery is now replaced. Perform a
Functional check according to the
instructions in the Operating Manual.
34
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E382 E394E 061 01 02 02
Servo Screen 390
4. Service procedures
Replacing the fuse
Before performing this service action, read
the sections “General” and “Handling PC
boards” in chapter 3, “Disassembly and
assembly”.
1
• Separate the display section from the
computer section as described in chapter
3, “Disassembly and assembly”.
• Remove the old fuse (1).
• Insert a new fuse, 3.15 A fast.
• Assemble the Servo Screen 390 as
described in chapter 3, “Disassembly
and assembly”.
The fuse is now replaced. Perform a
Functional check according to the
instructions in the Operating Manual.
4
SS-044X
E382 E394E 061 01 02 02
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35
4. Service procedures
Servo Screen 390
Adjusting the support arm
The pre-tension in the joint as well as in the
rail clamp can be adjusted if necessary:
Joint
4
S-046X
2
1
• Loosen the screw (1).
• Tighten or loosen the screw (2).
• Secure the new adjustment by tightening
the screw (1).
1
2
S-045X
Rail clamp
• Loosen the screw (1).
• Turn the lever (2):
– Clockwise to increase the tension in the
clamp.
– Counter-clockwise to reduce the tension
in the clamp.
Note – The lever must be given either half
turns or full turns.
• Secure the new adjustment by tightening
the screw (1).
36
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E382 E394E 061 01 02 02
Servo Screen 390
5. Troubleshooting
Troubleshooting
5
E382 E394E 061 01 02 02
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37
5. Troubleshooting
Servo Screen 390
Before starting troubleshooting, try to eliminate all possibilities of operational errors. If
the malfunction remains, use the troubleshooting guide below. Perform actions step
by step and check that the malfunction is
eliminated.
Malfunction
Servo Screen 390 will not start. The display
is not illuminated and there is no start-up
beep.
When the fault is corrected, carry out a
Functional check as described in the
Operating Manual, chapter 4, “Startup and
shutdown”.
Action
• Check/replace the external power cable/
connectors.
• Check that the power supply source
(ventilator or external power supply) works
properly.
• Check the fuse F1 on PC 1663.
• Check/replace the internal power cable/
connectors.
The display is illuminated at power on and
5
one or more start-up beeps can be heard
within 20 s after power on. Thereafter the
display may flash or will be completely
illuminated. A connected CRT display is not
illuminated and shows no text.
The display is not illuminated, but a
connected CRT display is illuminated and
shows the start-up sequence.
• Check/replace the Servo Screen 390
power switch and its cable/connector.
• If none of the above, replace PC 1663.
• If none of the above, replace PC 1662/
PC 1835.
• Hardware failure. Replace PC 1662/
PC 1835.
• Check/replace the display power and
signal cables.
• If not the above, replace the display.
• If none of the above, replace PC 1663.
38
• If none of the above, replace PC 1662/
PC 1835.
Siemens-Elema AB
E382 E394E 061 01 02 02
Servo Screen 390
5. Troubleshooting
Malfunction
The display is illuminated during start-up, but
after the start-up beep it goes black or shows
a deformed image. A connected CRT display
shows a normal start-up sequence and
image.
The start-up logo does not disappear and:
– the message “L
disappear within 30 s or
– the message “S
The control knob does not work properly.
OADING SOFTWARE“ does not
OFTWARE MISSING“ appears.
Action
• Check/replace the signal cable between
PC 1663 and the display.
• If not the above, replace the display.
• Replace the software memory card.
• If not the above, replace PC 1662/PC 1835.
• Operate the Servo Screen 390 with a
connected keyboard:
– If it works with the connected keyboard:
1. Replace the control knob.
2. If not the above, replace PC 1662/
PC 1835.
The brightness of the display can not be
adjusted.
It is not possible to establish communication
between Servo Screen 390 and an SV 300/
300A or an SV 900C/E.
– If it does not work with the connected
keyboard:
1. Replace PC 1662/PC 1835.
5
• Check the power cable from PC 1663 to
the internal display.
• If not the above, replace PC 1663.
• If none of the above, replace the display.
• Check/replace the communication cable.
• Try to communicate with another
ventilator (on SV 900C/E, first make sure
that the SCM 990 is properly configured).
• If none of the above, replace PC 1662/
PC 1835.
E382 E394E 061 01 02 02
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39
5. Troubleshooting
Servo Screen 390
Malfunction
It is not possible to print out on the
connected printer.
Information message ”Replace Servo
Screen 390 battery” remains in the
Message window although the battery has
been replaced.
It is not possible to set Time or Date in
Servo Screen when connected to a SV 300/
300A.
Action
• Check/replace the printer cable.
• Make sure that the printer itself is properly
configured.
• Make sure that the connected printer is
selected in the printer list in Servo Screen
390.
• Try to connect another printer.
• If none of the above, replace PC 1662/
PC 1835.
• Confirm the battery replacement using the
BATTERY CHANGE icon in the Service Menu.
• If not the above, replace PC 1662/PC 1835.
• Make sure that the communication cable
between Servo Screen and SV 300/300A
is connected to N82 on SV 300/300A.
The Servo Screen 390 starts up, but does
not display any information (e.g. curves or
numerical values) from the SV 300/300A.
5
• Reset the memory in SV 300/300A-PC
1587. See SV 300/300A – Service Manual
(printed 1996 or later).
40
Siemens-Elema AB
E382 E394E 061 01 02 02
Servo Screen 390
6. Index
Index
E382 E394E 061 01 02 02
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6
41
6. Index
A
Introduction
Description of functions
Disassembly and assembly
Service procedures
F
Servo Screen 390
Introduction
Description of functions
Disassembly and assembly
Service procedures
Adapter board PC 1663 9 13 22
AC Power Adapter 124 12
B
Battery 15
Battery change-icon 29
Battery replacement 34
Board identity 13
Brightness control 13
Bus interface 14
C
COM port 7
CompactFlash Card 15 31
Computer board PC 1662 9 14 22
Computer board PC 1835 9 14 22
Computer section 9 22
Connection ports 7 16
Control knob 7 15
CTR port 7
Fan 9 14 23
Fan control 13
Firmware 9
Front panel filter 8 21
Fuse 13 35
H
Handling PC boards 18
I
Internal memory 14 33
Internal power cable 13
K
KBD port 7
Keyboard 30
M
6
D
Display 7 16 20
Display connection cables 14
Display section 8 20
E
ESD protection 18
Event list 15 28
42
Microprocessor 14
O
On/off switch 7 14
P
PC Card 15 31
Power supply 12
PRINTER port 7
Protective cover 7 31
Pulse generator 7 16 20
Pulse generator interface 14
PWR port 7
Siemens-Elema AB
E382 E394E 061 01 02 02
Servo Screen 390
Introduction
Description of functions
Disassembly and assembly
S
Service access code 27
Service information display 28
Service menu 27
Signal adaption 13
Software 9
Software memory card 7 15 31
Software mem. card interface 15
SRAM 15
SS390-BIOS 9 15
SS390-FLASH 15 32
SS390-PROM 15 32
Support arm 8
Support arm joint 36
Support arm rail clamp 36
6. Index
Service procedures
V
VENT port 7
Video memory 14
VGA controller 14
Voltage distribution 9 13
Voltage & Function monitoring 14
6
E382 E394E 061 01 02 02
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43
6. Index
Notes
Servo Screen 390
6
44
Siemens-Elema AB
E382 E394E 061 01 02 02
Servo Screen 390
7. Diagrams
Diagrams
E382 E394E 061 01 02 02
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7
45
7. Diagrams
Servo Screen 390
KBD – N6
SS-048X
SS-049X
13
25
2
4
1
5
3
Keyboard port for connection of a keyboard.
DIN 41524, female, 5 pole.
1 KEY_CLK
2 KEY_DATA
3–
4 GND
5 +5 V
A* CHASSIS_GND
PRINTER – N7
1
Printer port for connection of a printer.
D-Sub, female, 25 pole.
14 LPT_AUTOFD_L
15 LPT_ERROR.L
16 LPT_INIT.L
17 LPT_SLCTIN.L
18 GND
19 GND
20 GND
21 GND
22 GND
23 GND
24 GND
25 GND
A* CHASSIS_GND
14
1 LPT_STROBE.L
2 LPT_PD_0
3 LPT_PD_1
4 LPT_PD_2
5 LPT_PD_3
6 LPT_PD_4
7 LPT_PD_5
8 LPT_PD_6
9 LPT_PD_7
10 LPT_ACK.L
11 LPT_BUSY
12 LPT_PE
13 LPT_SLCT
7
SS-050X
SS-051X
1
6
5
10 6
15
5
9
1
11
COM – P8
Serial communication port for communication with other equipment.
D-Sub, male, 9 pole. (For future applications. Dependent on the software version.)
1 DCD_1A
2 RXD_1A
3 TXD_1A
4 DTR_1A
5 GND
6 DSR_1A
7 RTS_1A
8 CTS_1A
9 RI_1A
A* CHASSIS_GND
CRT – N10
CRT port for connection of an external
monitor. HD D-Sub, female, 15 pole.
1 RED_CRT
2 GREEN_CRT
3 BLUE_CRT
4–
5 GND
60 VA
70 VA
80 VA
9–
10 GND
11 –
12 –
13 HSYNC_CRT
14 VSYNC_CRT
15 –
A* CHASSIS_GND
46
* A = Connected to the metal housing of
the connector.
Siemens-Elema AB
E382 E394E 061 01 02 02
Servo Screen 390
7. Diagrams
VENT – P9
1
SS-050X
Communication cable between
SS 390 and SV 300/300A
9-pin connector 26-pin connector
pin # pin #
5 ---------- BN ----------- 2
8 ---------- RD ----------- 3
2 ---------- WH ---------- 4
3 ---------- BU ----------- 5
7 ---------- GN ----------- 6
VENT – P9
9-pin connector 26-pin connector
VENT – P9
6 -----------YE ----------- 7
Communication cable between
pin # pin #
1 ---------- GN ----------- 4
2 -----------YE ----------- 2
3 ---------- GY----------- 3
4 -----------PK --------- 5,6
5 ---------- BU ----------- 7
6,8---------WH --------- 20
7 ---------- RD ----------- 8
6
SS 390 – SCM 990
5
Serial communication port for communication with the Servo Ventilator.
D-Sub, male, 9 pole.
9
1 DCD_2A
2 RXD_2A
3 TXD_2A
4 DTR_2A
5 GND
6 DSR_2A
7 RTS_2A
8 CTS_2A
9 RI_2A
A* CHASSIS_GND
N82
RS232C – N1
1
SS-052X
SS 390 and AC Power Adapter 124
15-pin connector 15-pin connector
9
24 V power cable between
SS 390 and SV 300/300A
pin # pin #
7 -----------YE ----------- 7
8 ---------- GN ----------- 8
1 ---------- BN ----------- 1
2 ---------- WH ---------- 2
PWR – P21
15
PWR – P21
8
Power port for connection to a 24V power
source. D-Sub, male, 15 pole.
9–
10 –
11 –
12 –
13 –
14 –
15 –
A* CHASSIS_GND
7
or
1 +24 V
2 +24 V
3–
4–
5–
6–
7 GND
8 GND
N78 on
SV 300/300A
* A = Connected to the metal housing of
the connector.
E382 E394E 061 01 02 02
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47
7. Dia grams
CONTROL
KNOB
ON-OFF
SWITCH
DISPLAY CONNECTION CABLES
INTERNAL POWER CABLE
SS-047E
CONNECTION PORTS:
J3
N3
ADAPTER BORD
PC1663
N18
N20
F1
P18
+5V
BOARD
IDENTITY
P20
BRIGHT-
NESS
CONTROL
P19
N19
J2
N2
N15
P15
VOLT AGE
DISTRIBUTION
+12V
FAN
CONTROL
SIGNAL
ADAPTION
P21
PWR
DISPLAY
J1
N1
DISPLAY SECTION
FAN
COMPUTER BOARD PC 1662 / PC 1835
MICRO-
PROCESSOR
SRAM
VGA
CONTROLLER
INTERNAL MEMORY
P16
N16
N5
MEMORY
N10
CRT VENT COM PRINTER KBD
VIDEO
P5
VOLTAGE &
FUNCTION
MONITORING
P9
BUS
INTERFACE
P13
N0
N0
BATTERY
SOFTWARE
MEMORY
CARD
INTERFACE
SS390-BIOS
P14
P8
COMPUTER SECTION
GENERATOR
INTERFACE
N7
GENERATOR
SOFTWARE
MEMORY CARD
(PC Card or
CompactFlash Card)
PULSE
7
N6
PULSE
P12
N12
If connected
to SV 300/300A
SV 300/300A
24V POWER CABLE
From
AC POWER
ADAPTER
124
If connected
to SV 900C/E
Servo Screen 390 – Block diagram
Servo Screen 390 – Service Manual
Order No.: 63 14 251 E394E
E382 E394E 061 01 02 02
© Siemens-Elema AB, Electromedical Systems Division, 1995-2000. All rights reserved. No part of this
publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means,
electronic, mechanical, photocopying, recording, or otherwise, without the prior permission of the copyright
owner in writing. Subject to alterations without prior notice.
Issued by Siemens-Elema AB, Electromedical Systems Division, SE-171 95 Solna, Sweden.
Printed in Sweden
Price group: 5
0600 0.5
2nd English edition,
June 2000
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