Midmark 411 Service manual

411

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-001 thru -008

Power Examination Table

Serial Number Prefixes: AV, DJ & DW

NO LONGER IN

Service and

Parts Manual

Some service parts may not

PRODUCTION

be available for this product!

411

-001 thru

-008

FOR USE BY MIDMARK TRAINED TECHNICIANS ONLY

SF-1492 Part No. 004-0004-00 Rev. Q (4/09/08)

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TABLE OF CONTENTS

Section/Paragraph Page Section/Paragraph Page

IMPORTANT INSTRUCTIONS

General Safety Instructions......................................... iii

Safety Alert Symbols ................................................... iii

Warranty Instructions .................................................. iii

SECTION I GENERAL INFORMATION

1.1 Scope of Manual ......................................... 1-1

1.2 How to Use Manual ..................................... 1-1

1.3 Description of 411 Power Examination

Table ....................................................... 1-1

1.4 Specifications ............................................. 1-4

1.5 Parts Replacement Ordering ....................... 1-4

1.6 Special Tools .............................................. 1-5

SECTION II TESTING AND TROUBLESHOOTING

2.1 Operational Test .......................................... 2-1

2.2 Troubleshooting Procedures ........................ 2-3

SECTION III SCHEDULED MAINTENANCE

3.1 Scheduled Maintenance .............................. 3-1

SECTION IV MAINTENANCE/SERVICE INSTRUCTIONS

4.1 Introduction ................................................. 4-1

4.2 Shrouds Removal / Installation (Early

Units) ........................................................ 4-1

4.3 Shrouds Removal / Installation (Later

Units) ........................................................ 4-2

4.4 Interface Board Removal / Installation

(Early Units) .............................................. 4-3

4.5 Interface Board Removal / Installation

(Later Units) .............................................. 4-5

4.6 PC Logic Board Removal / Installation ......... 4-6

4.7 Program Panel or Program Panel

Interface Board Removal / Installation ...... 4-7

4.8 Hand Control Panel or Hand Control Board

Removal / Installation ............................... 4-8

4.9 Pan Safety Limit Switch Removal /

Installation ................................................ 4-9

4.10 Typical Capacitor Removal / Installation .... 4-10

4.11 Back Actuator Receiver and Transmitter

Removal / Installation ............................. 4-11

4.12 Back Actuator Removal / Installation ......... 4-13

4.13 Foot Actuator Receiver and Transmitter

Removal / Installation ............................. 4-14

4.14 Foot Actuator Removal / Installation .......... 4-16

4.15 Tilt Actuator Receiver and Transmitter

Removal / Installation ............................. 4-18

4.16 Tilt Actuator Removal / Installation ............ 4-19

4.17 Base Actuator Receiver and Transmitter

Removal / Installation ............................. 4-20

4.18 Base Actuator Removal / Installation ......... 4-22

4.19 Gas Spring(s) Removal / Installation .......... 4-25

4.20 Base Down Limit Switch Removal /

Installation .............................................. 4-28

4.21 Typical Actuator Motor / Actuator Brake

Removal / Installation ............................. 4-29

4.22 Chain Assembly Adjustment ...................... 4-30

4.23 Headrest Adjustment (Old Style

Headrest) ................................................ 4-31

4.24 Headrest Handles Handle Stops

Adjustment (Old Style Headrest) ............. 4-32

4.25 Headrest Adjustment (New Style

Headrest) ................................................ 4-33

4.26 Headrest Handles Handle Stops

Adjustment (New Style Headrest) ........... 4-33

4.27 Typical Foot Pedal Foot Switch

Removal / Installation ............................. 4-34

4.28 Stirrup Assembly Removal / Installation

(New Style Only) ..................................... 4-35

SECTION V SCHEMATICS AND DIAGRAMS

5.1 Electrical Schematics / Wiring Diagrams ..... 5-1

SECTION VI PARTS LIST

6.1 Introduction ................................................. 6-1

6.2 Description of Columns ............................... 6-1

6.3 Torque Specifications And Important

Assembly Notes ....................................... 6-1

Pictorial Index .............................................. 6-2

Upholstery Set ............................................. 6-3

Upholstery Components ............................. 6-4.*

Headrest Components ................................ 6-5.*

Back Components ...................................... 6-6.*

Back and Foot Actuator Assembly ............. 6-7.*

Seat Components ...................................... 6-8.*

Stirrup Assembly ....................................... 6-9.*

Foot Extension Components .................... 6-10.*

Footboard Components .............................. 6-11

Covers and Control Components .............. 6-12.*

Inner Member Components ........................ 6-13

Base and Tilt Actuator Assembly ............. 6-14.*

(*) Indicates that there has been a serial number break for the illustration

and that there are additional point page(s) following the original page.

TABLE OF CONTENTS - CONTINUED

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Section/Paragraph Page Section/Paragraph Page

Middle Member Components .................... 6-15.*

Base Components - Domestic .................. 6-16.*

Base Components - Export ...................... 6-17.*

Hand Control and Footswitch Electrical

Connections .......................................... 6-18.*

Transmitter Electrical Connections ........... 6-19.*

Motor and Capacitor Electrical

Connections ............................................ 6-20

Receiver Electrical Connections ............... 6-21.*

Hand Control ........................................... 6-22.*

COMMENTS ............................................................ 7-1

FAX ORDERING FORM .......................................... 7-2

(*) Indicates that there has been a serial number break for the illustration

and that there are additional point page(s) following the original page.

IMPORTANT INSTRUCTIONS

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General Safety Instructions

Safety First: The primary concern of Midmark Corporation is that this table is maintained with the

safety of the patient and staff in mind. To assure that services and repairs are completed safely and correctly, proceed as follows:

(1) Read this entire manual before performing any

services or repairs on this table.

(2) Be sure you understand the instructions

contained in this manual before attempting to service or repair this table.

Safety Alert Symbols

Throughout this manual are safety alert symbols that call attention to particular procedures. These items are used as follows:

DANGER

A DANGER is used for an imminently

hazardous operating procedure, practice, or condition which, if not correctly followed, will result in loss of life or serious personal injury.

NOTE

A NOTE is used to amplify an operating procedure, practice or condition.

Warranty Instructions

Refer to the Midmark “Limited Warranty” printed in the Installation and Operation Manual for warranty information. Failure to follow the guidelines listed below will void the warranty and/or render the 411 Power Examination Table unsafe for operation.

• In the event of a malfunction, do not attempt to operate the table until necessary repairs have been made.

• Do not attempt to disassemble table, replace malfunctioning or damaged components, or perform adjustments unless you are one of Midmark’s authorized service technicians.

• Do not substitute parts of another manufacturer when replacing inoperative or damaged components. Use only Midmark replacement parts.

WARNING

A WARNING is used for a potentially

hazardous operating procedure, practice, or condition which, if not correctly followed, could result in loss of life or serious personal injury.

CAUTION

A CAUTION is used for a potentially

hazardous operating procedure, practice, or condition which, if not correctly followed, could result in minor or moderate injury. It may also be used to alert against unsafe practices.

EQUIPMENT ALERT

An EQUIPMENT ALERT is used for an

imminently or potentially hazardous operating procedure, practice, or condition which, if not correctly followed, will or could result in serious, moderate, or minor damage to unit.

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SECTION I

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GENERAL INFORMATION

SECTION I

GENERAL INFORMATION

1.1 Scope of Manual

This manual contains detailed troubleshooting, scheduled maintenance, maintenance, and service instructions for 411 Power Examination Table. This manual is intended to be used by Midmark’s authorized service technicians.

1.2 How to Use Manual

A. Manual Use When Performing Scheduled Mainte-

nance.

(1) Perform inspections and services listed in

Scheduled Maintenance Chart (Refer to para 3.1).

(2) If a component is discovered to be faulty or out

of adjustment, replace or adjust component in accordance with maintenance/service instructions (Refer to para 4.1).

B. Manual Use When Table Is Malfunctioning And

Cause Is Unknown.

The major serviceable components of the table are the headlock, back actuator, back transmitter, back receiver, back capacitor, foot actuator, foot transmitter, foot receiver, foot capacitor, tilt actuator, tilt transmitter, tilt receiver, tilt capacitor, base actuator, base transmitter, base receiver, base capacitor, base down limit switch, chain assembly, base slide assembly, gas spring(s), program panel, program panel interface board, PC logic board, interface board, hand control panel, hand control PC board, foot control foot switches, and pan safety limit switch.

B. Theory of Operation (See Figures 5-1 and 5-2

for wiring diagrams / electrical schematics)

Electrical Power:

Line voltage (115 VAC for domestic units and 230 VAC for export units) is supplied directly to the table's interface board. There is a transformer and associated follow-on circuitry on the interface board which reduces the line voltage to 12 - 14 VDC. The 12-14 VDC provides power to operate the circuitry of the PC logic board, hand control, and foot control.

(1) Perform an operational test on table (Refer to

para 2.1).

(2) Perform troubleshooting procedures listed in

Troubleshooting Guide (Refer to para 2.2).

(3) If a component is discovered to be faulty or out

of adjustment, replace or adjust component in accordance with maintenance/service instructions (Refer to para 4.1).

C. Manual Use When Damaged Component Is Known.

(1) Replace or adjust component in accordance

with maintenance/service instructions (Refer to para 4.1).

1.3 Description Of 411 Power Examination Table

A. General Description (See Figure 1-1).

The 411 Power Examination Table is an examination table designed specifically for performing general medical examinations and procedures.

On domestic units, 115 VAC is continuously supplied to the electrical receptacle. Export units do not have an electrical receptacle.

Manual Operation of Base, Tilt, Back, and Foot Actuator Assemblies:

When a manual function is selected using the manual positioning buttons on the hand control or program panel, a signal is sent thru the PC logic board to the interface board. The signal causes the appropriate relay on the interface board to energize (i.e., if the TILT UP button is depressed on hand control, the Tilt UP relay on interface board is energized). Line voltage is continuously supplied to all relays on interface board. So, when a relay is energized, the line voltage flows thru the relay and is applied across the windings of the actuator motor, causing it to run. When the hand control button is released, the relay de-energizes, removing the line voltage from the windings of the actuator motor and causing it to stop running.

SECTION I

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GENERAL INFORMATION

PAN SAFETY

LIMIT SWITCH

TILT

ACTUATOR

HAND CONTROL

PANEL

HAND CONTROL

PC BOARD

PROGRAM

PANEL

BACK

ACTUATOR

HEADLOCK

ASSEMBLY

BACK

RECEIVER

BACK

TRANSMITTER

TILT

TRANSMITTER

LOGIC

BOARD

PROGRAM PANEL

INTERFACE BOARD

FOOT

TRANSMITTER

FOOT

RECEIVER

ACTUATOR

FOOT

BASE

SLIDE

ASSEMBLY

TILT

RECEIVER

INTERFACE

BOARD

GAS

SPRING(S)

BASE

DOWN

LIMIT

SWITCH

BASE

TRANSMITTER BACK or FOOT

CAPACITOR

(SEE NOTE)

BACK or FOOT

CAPACITOR

(SEE NOTE)

TILT

CAPACITOR

CHAIN

ASSEMBLY

BASE

CAPACITOR

BASE

RECEIVER

BASE

ACTUATOR

NOTE: THE FOOT AND BACK CAPACITORS MAY BE SWITCHED ON SOME UNITS. CHECK THE WIRE COLORS OF THESE CAPACITORS TO DETERMINE FOOT OR BACK CAPACITOR LOCATION. RED WIRES ARE CONNECTED TO THE BACK CAPACITOR AND YELLOW WIRES ARE CONNECTED TO THE FOOT CAPACITOR.

Figure 1-1. Major Components

FOOT CONTROL

FOOT SWITCH

MA301800

SECTION I

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GENERAL INFORMATION

Actuator Operation: The Base, Tilt, Back, and Foot actuators are ball screw

driven. The actuator assemblies contain a pivot point on the end of the ball screw. If an actuator assembly is run to the end of its stroke, the ball screw shaft spins inside the nut, which allows the actuator assembly to run without damaging or advancing the nut.

The Base, Tilt, Back, and Foot actuators have internal braking mechanisms which use a friction device to keep actuator stationary when the actuator is not being run.

Programming Operation: The model 411 can be programmed for up to eight

operator specified positions. To program a position into memory, the operator uses the manual positioning buttons on the hand control or program panel to position the table top in the desired position. Now, the PC logic board determines the position of each function as follows: each actuator has a transmitter and a receiver attached to it; the receiver is mounted to the motor end of the actuator and is stationary while the transmitter is mounted to the moving actuator shaft of the actuator. The PC logic board has the transmitter on each actuator shaft continuously transmit a high frequency sound wave which is received by its receiver. The PC logic board compares the transmit point on the wave form against the receive point on the wave form and uses this data to determine the distance between the transmitter and receiver for each actuator. The PC logic board uses this frequency measuring technique to determine the position of the actuators at all times. The operator now presses the PROGRAM button followed by one of the eight PROGRAMMED POSITION buttons. The red L.E.D. under the PROGRAM button will illuminate when the PROGRAM button is pressed and will remain illuminated for four seconds to inform the operator that he / she may now select a PROGRAMMED POSITION button (1 thru 8). After four seconds, the PROGRAM function will automatically disable itself if a PROGRAMMED POSITION button has not been selected. When a PROGRAMMED POSITION button is pressed, the receive point on the wave form for each actuator is stored into memory.

Now the operator can easily return to the position stored in memory. To do so, the operator presses and holds the PROGRAMMED POSITION button (1 thru 8) which has the desired position stored in memory. The PC logic board compares the receive point on the wave

form that is actually being measured by each actuator's transmitter / receiver set, against the value stored in the PC logic board's memory. The PC logic board then energizes the appropriate relays and allows each actuator to run until the receive point on the wave form being measured by each actuator's transmitter / receiver set is equal to the value stored in the PC logic board's memory. When the values are equal, the relays are de-energized, stopping the actuators.

Auto Return Operation: When the operator presses the AUTO RETURN button,

the PC logic board energizes the base actuator's down relay, causing the base actuator to run. The base actuator lowers until the base down limit switch is tripped. The PC logic board also senses that the base down limit switch is tripped and de-energizes the base actuator relays.

If the operator, at any time, wishes to stop the auto return function, he / she can press the STOP button. The PC logic board senses that the STOP button has been pressed and de-energizes the base actuator relays, causing the base actuator to stop.

Pan Safety Limit Switch: The table has a N.O. pan safety limit switch. If the pan

assembly is not pushed into its fully stowed position, the pan safety limit switch will not be tripped and there will be an open circuit. If the pan safety limit switch circuit is open, no power can reach the foot actuator windings, preventing movement of the FOOT UP and FOOT DOWN function. This safety feature prevents the operator from accidentally colliding the foot section into the treatment pan assembly.

General Information: All actuator motors have a thermal overload switch

which will activate if the actuator assembly is run continuously. The actuator motor was not designed for continuous operation. The normal cool off period for the thermal overload switches is 10 - 20 minutes.

Each actuator motor has a capacitor which provides start up power and motor run power.

There is a 0.15 amp fuse, located on the interface board, which provides over-current protection for the transformer.

SECTION I

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GENERAL INFORMATION

There are four 5 amp slow blow fuses, located on the interface board, which provide over-current protection for each function's motors (i.e, Tilt fuse protects tilt actuator motor).

Under the control console, there is an ON / OFF switch. Turning the switch to OFF disables movement of the table, preventing accidental table movement or patients from operating table. A red CONTROL PANEL POWER L.E.D. illuminates when the ON / OFF switch is in the ON position.

1.4 Specifications

Factual data for the 411 Power Examination Table is provided in Table 1-1. Also, see Figure 1-2.

Table 1-1. Specifications

Description Data

Weight:

Without Shipping Carton................ 550 lb (249.5 kg)

With Shipping Carton..................... 625 lb (283.5 kg)

Weight Capacity (Maximum)............. 300 lb. (136.0 kg)

Electrical Requirements:

115 VAC Unit........................... 110 - 120 VAC, 60 HZ,

12 amp, single phase

230 VAC Unit...................... 220 - 240 VAC, 50/60 HZ,

10 amp, single phase

Power Consumption:

115 VAC Unit......................................... 1440 WATTS,

12 amps @ 120 VAC

230 VAC Unit........................................ 2400 WATTS,

10 amps @ 240 VAC

Recommended Circuit:

A separate (dedicated) circuit is recommended for this table. The table electrical circuit with other appliances or equipment unless the circuit is rated for the additional load.

should not

be connected to an

1.5 Parts Replacement Ordering

If a part replacement is required, order the part directly from the factory as follows:

Shipping Carton....... 58 in. "L" x 42 in. "W" x 31 in. "H"

(147.3 cm x 106.7 cm x 78.7 cm)

Dimensions (See Figure 1-2):

Table Top Length ......................... 70.5 in. (179.0 cm)

Table Top Length (headrest extended).............. 81 in.

(205.7 cm)

Table Top Width ................................ 27 in. (68.6 cm)

Overall Width..................................... 27 in. (68.6 cm)

Table Adjustment:

Back Section ...................................................0 to 85°

Foot Section ...................................................0 to -87°

Tilt Function..................................................... 0 to 42°

Table Top Height (Adjustable): ...................25.75 in. to

41.625 in.

(65.4 cm to 105.7 cm)

Table Speeds:

TABLE UP.........................................12 +/- 1 seconds

BACK UP ..........................................10 +/- 1 seconds

TILT UP.............................................11 +/- 1 seconds

FOOT UP ..........................................10 +/- 1 seconds

(1) Refer to Figure 1-3 to determine the location of

the model number and serial number of the table and record this data.

(2) Refer to the Parts List to determine the item

numbers of the parts, part numbers of the parts, descriptions of the parts, and quantities of parts needed and record this data (Refer to para 6.1).

NOTE

Ask the Purchasing Department of the company that owns the table for this information. Otherwise, this information may be obtained from the dealer that sold the table.

(3) Determine the installation date of the table and

record this data.

(4) Call Midmark with the recorded information and

ask for the Medical Products Technical Services Department. See back cover of this manual for the phone number or use the Fax Order Form (See page 7-2 for Fax Order Form).

81"

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SECTION I

GENERAL INFORMATION

70 1/2"

1.6 Special Tools

23 1/2"

(BASE)

POWER

CORD

(78")

85°

(MAX.)

10 1/2"

Figure 1-2. Table Dimensions

33"

87°

(MAX.)

42°

(MAX.)

27"

(TABLE TOP)

41 5/8" (MAX.)

25 3/4"

(MIN.)

MA301900

Table 1-2 lists all of the special tools needed to repair the table, how to obtain the special tools, and the purpose of each special tool.

Table 1-2. Special Tool List

Description of Special Tool

Multimeter Commercially Available Any Type Used to perform continuity and volt age checks. Torque Wrench Commercially Available Any Type Used to t i ght en nuts or s cr ews to specified v alues .

Support Bar Midmark Corporation

Pry Bar Midmark Corporation

Manufacturer's

Name / Address / Phone

60 Vista Drive Versai ll es, Ohio 45380 (513) 526-3662

Manufacturer's

Part Number

051-0412-00 Used to support t he weight of the t able t op so t he

base actuator may be disconnected from table. Used in base actuator rem ova l and gas spring(s) removal procedures.

051-0413-00 Used to compress t he gas spri ng( s) so they may

be disconnected and removed from table.

Purpose of Special Tool

SECTION I

MODEL NO.

INPUT RATING

SERIAL NO.

411-00X XXX VAC

XX AMP XX/XX HZ

AVXXXXXX

MIDMARK

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GENERAL INFORMATION

MODEL

NUMBER

SERIAL

NUMBER

MA302000

Figure 1-3. Model Number / Serial Number Location

TESTING AND TROUBLESHOOTING

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SECTION II

TESTING AND TROUBLESHOOTING

SECTION II

2.1 Operational Test (See Figure 2-1)

In order to effectively diagnose the malfunction of the table, it may be necessary to perform an operational test as follows:

WARNING

Refer to the Operator Manual for

complete instructions on operating the table. Failure to do so could result in personal injury.

NOTE

The Operational Test, for the most part, only describes what should happen when the table is operated. If the table does something other than described, a problem has been discovered. Refer to the Troubleshooting Guide to determine the cause of the problem and its correction.

(1) Plug the table into a grounded, non-isolated,

correctly polarized outlet, that has the proper voltage output for the table. See Figure 2-1.

NOTE

The pan slide assembly should be pushed in fully for the following step.

Table Speeds:

TABLE UP.........................................12 +/- 1 seconds

BACK UP ..........................................10 +/- 1 seconds

TILT UP.............................................11 +/- 1 seconds

FOOT UP ..........................................10 +/- 1 seconds

(4) Repeat steps 2 and 3 on the table's console. If

the table has a foot control, repeats steps 2 and 3 for the foot control also.

(5) Lower FOOT DOWN function almost all the

way down. Pull the pan slide assembly outward until the pan safety limit switch is no longer tripped. Press FOOT UP and then FOOT DOWN button on hand control.

(6) Observe. The foot section of table top

not

move when FOOT UP or FOOT DOWN

buttons are pressed.

(7) Push pan slide assembly inward until pan

safety limit switch is tripped. Press FOOT UP and then FOOT DOWN button on hand control.

(8) Observe. The foot section of table top

move when FOOT UP or FOOT DOWN buttons are pressed.

should

(2) Press TABLE UP, TABLE DOWN, BACK UP,

BACK DOWN, TILT UP, TILT DOWN, FOOT UP, and FOOT DOWN buttons on hand control.

(3) Observe. The table top should move in the

direction corresponding to the button which is being depressed. No section of the table top should drift on its own after hand control button is released. No actuator assembly should make excessive squealing noises. Movement should be steady and should match the positions and speeds listed below:

Table Positions:

Back Section ................................................... 0 to 85°

Foot Section ...................................................0 to -87°

Tilt Function..................................................... 0 to 42°

Table Top Height (Adjustable): ...................25.75 in. to

41.625 in.

(65.4 cm to 105.7 cm)

NOTE

Once the PROGRAM button is pressed, the operator has four seconds to press one of the eight PROGRAMMED POSITION buttons.

(9) Press the PROGRAM button followed by the

PROGRAMMED POSITION button labeled "1".

(10) Observe. When the PROGRAM button is

pressed, the red L.E.D. directly above it should illuminate.

(11) Use the manual positioning buttons to move the

table top to a new position.

NOTE

Steps 12 thru 14 check functionality of PROGRAMMED POSITION buttons 1 thru 8 on console.

(12) Press and hold the PROGRAMMED POSITION

button "1" (located on console) until the table top stops moving.

SECTION II

BACK

SECTION

AXIS

"B"

AXIS

"C"

POINT

"A"

LOWER

LOCK

HANDLE

UPPER

LOCK

HANDLE

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TESTING AND TROUBLESHOOTING

MANUAL POSITION BUTTONS

PROGRAMMED

MANUAL POSITION BUTTONS

CONTROL

POSITION BUTTONS

PANEL

POWER

L.E.D.

PROGRAM

BUTTON

HEADREST

PROGRAM

L.E.D.

SECTION

AUTO RETURN

"STOP" BUTTON

AUTO RETURN

"START" BUTTON

CONTROL PANEL

POWER "ON / OFF"

SWITCH

VIEW

ROTATED 90°

TABLE

TOP

TABLE

BACK

DOWN

PROGRAMMED

POSITION BUTTONS

HAND

CONTROL

TABLE DOWN

TILT

FOOT

DOWN

HAND

CONTROL

TILT

FOOT

DOWN

BACK

SECTION

SEAT

SECTION

FOOT

SECTION

PAN SLIDE

ASSEMBLY

CONSOLE

MA302100

Figure 2-1. Operational Test

SECTION II

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TESTING AND TROUBLESHOOTING

(13) Observe. The table top should move back to

the position that was stored into memory of "1" in step 9.

(14) Repeat steps 9 thru 13 to test the PRO-

GRAMMED POSITION buttons "2 thru 8" on the console.

NOTE

Steps 15 thru 17 check functionality of PROGRAMMED POSITION buttons 1 thru 8 on hand control.

(15) Press and hold the PROGRAMMED POSITION

button "1" (located on hand control) until the table top stops moving.

(16) Observe. The table top should move back to

the position that was stored into memory of "1" in step 9.

(17) Repeat steps 15 and 16 to test the PRO-

GRAMMED POSITION buttons "2 thru 8" on the hand control.

(18) Press the TABLE UP button to run the table top

all the way up.

(19) Press the AUTO RETURN "START" button,

wait one second, and then press the AUTO RETURN "STOP" button.

(20) The base actuator should begin to lower the

table top. When the STOP button is pressed, the base actuator should stop lowering.

(23) Switch the CONTROL PANEL POWER switch

to OFF.

(24) Observe. The CONTROL PANEL POWER

L.E.D. should extinguish when the switch is switched to OFF.

(25) Press one of the MANUAL POSITION buttons

or PROGRAMMED POSITION buttons.

(26) Observe. The table top should not move when

a MANUAL POSITION button or PROGRAMMED POSITION button is pressed.

NOTE

Early units have a headrest which has only one locking handle. The procedure is the same otherwise.

(27) Unlock upper lock handle and lower lock

handle, position headrest in a horizontal position as shown, and then relock upper lock

handle and lower lock handle. (28) Place a 45 lb (20.4 kg) static load at Point A. (29) Observe. There should be no movement at

Axis B or Axis C when the static load is applied

to the headrest. The maximum force required

to unclamp a locking handle should be 17 lbs.

(7.7 kg) and the maximum force required to

clamp a locking handle should be 35 lbs. (15.8

kg).

2.2 Troubleshooting Procedures

(21) Press the AUTO RETURN "START" button and

allow the table top to lower all the way down.

(22) Observe. The base actuator should lower the

table top all the way down. The base actuator should not continue to run after table top is completely lowered.

Table 2-1 is a Troubleshooting Guide which is used to determine the cause of the malfunction.

SECTION II

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TESTING AND TROUBLESHOOTING

Table 2-1. Troubleshooting Guide

Problem Symptom Probable Cause Check Correction

Table will not o p e rate when any of the eight up or down functions, auto return, or programmed positions ar e selected from the hand control or console.

When any hand control or console but ton is pressed, nothing happens (actuator motor(s) does not run or hum).

Nothing hap pens when a hand contro l or console button is pressed, but table runs when a foot control switc h i s depresse d.

Power cord is not plugged into facility wall outlet.

CONTR OL PA NE L PO W ER switch is OFF.

Facility circuit breaker providing power t o table is tripped.

Wire conn ect ions loo se. Check all wiring

0.15 amp transformer primary fuse on interface board is blown.

Interface board is malfunctioning.

PC logic board is malfunctioning.

Check to see if power cord is plug ged i n.

Check to see if CONTROL PANEL POWER switch is ON. CONTROL PANEL POWER L.E.D. should illuminat e to in dicat e switch is ON.

Check t o see if f acility circuit br eaker is tripped. One way of checking this is to plug a lamp into wall outlet that table was plugged into.

connections from power cord to terminal block and from terminal block to interface board. Perform cont inuit y check on wires. Use multimeter to check for proper v oltage levels.

Refer to Figure 5-1 or 5-2 for this check. Perform cont inuit y check on primary fuse.

Replace suspect interface board with known wo rking interface board.

Replace suspect PC logic board with known working PC logic board.

Plug power cor d into f a c ility wall outlet.

Turn CONTROL PANEL POWER switch to ON. Inform operator on use of the switch. If the table does not work even when the switch is in ON positi on, replace PC logic board. Refer to para 4.6.

If circuit breaker is tripped, determine what caused circu it breaker to trip, correct the problem, and then reset / replace circ uit breaker.

Clean any dirt y con ne ct ions. Tighten any loose connec tions. Replace any damaged connections.

Replace blown prim ary fuse. See Figure 5-1 or 5-2 for location of fuse.

Replace interface board. Refer to para 4.4 or 4.5.

Replace PC logic board. Refer to para 4.6.

Problem Symptom Probable Cause Check Correction

Return To Table Of Contents

One or more funct ions cannot be initiated from the hand control.

Table 2-1. Troubleshooting Guide - Continued

Some funct ions may be initiated from the hand control, but at least one may not . All functions can be initiated from the console.

TESTING AND TROUBLESHOOTING

Hand control panel of hand control is malfunctioning (switch membrane is malfunctioning).

Hand control board is malfunc t ioning.

Hand co ntrol coil cor d has bad connection or there is a break in coil cord.

Replace suspect h and control panel with known working hand c ont rol panel.

Replace suspect h and control board with known working hand c ont rol board.

Replace suspect c oi l cord with known working coil cord.

SECTION II

Replace hand control panel. Refer to para 4.8.

Replace hand control board. Refer to para 4.8.

Replace coil cord.

One or more funct ions cannot be initiated from the cons ole.

One or more funct ions cannot be initiated from the optional foot control.

Some funct ions may be initiated from the consol e, but at least one may not. All functions c an be initiated from the hand control.

Some funct ions may be initiated from the foot control, but at least one may not . All functions can be initiated from t he hand contr ol an d console.

Program p anel i s malfunc t ioning ( swi tch membrane i s malfunct ioning ) .

Program panel interface board is malfunctioning.

Wire conn ect ions loo se. Check all wiring

Foot switch for non-opera ble function is malfunctioning.

Wire conn ect ions loo se. Check all wiring

Replace suspect program panel with known working program panel.

Replace suspect program panel interface board with known working program panel interface board.

connections from program panel to program panel interface board to PC logic board. Perform cont inuit y check on wires. Use multimeter to check for proper v oltage levels.

Perform a continuity check o n suspect foot switch.

connections from foot control to interface board. Perform continu ity check on wires. Use multimeter to check for proper voltage levels.

Replace program panel. Refer to para 4.7.

Replace program panel interface board. Refer to para 4.7.

Clean any dirt y con ne ct ions. Tighten any loose connec tions. Replace any damaged connections.

Replace foot switch. Refer to para 4.27.

Clean any dirt y con ne ct ions. Tighten any loose connec tions. Replace any damaged connections.

SECTION II

Return To Table Of Contents

TESTING AND TROUBLESHOOTING

Table 2-1. Troubleshooting Guide - Continued

Problem Symptom Probable Cause Check Correction

BACK UP and BACK DOWN funct i ons do not work. All o t her functions work.

TILT UP and TILT DOWN functions do not work. All other functions work.

When BACK UP and BACK DOWN buttons are pres sed, the table will not move (all other functions work).

When TILT UP and TILT DOWN buttons are pres sed, the table will not move (all other functions work).

BACK capacitor is weak o r blown.

Thermal over l oad switch in back actuat or is activated.

5 amp BACK fuse fo r BACK UP and BA CK DOWN functions is blown (located on interface board).

Back ac t uator assembly is malfunctioning.

Wire conn ect ions loo se. Check all wiring

Interface board is malfunctioning

Tilt capacitor is weak or blown.

Thermal over l oad switch in tilt act uat or is activated.

5 amp TILT fuse for TILT UP and TILT DOWN functions is blown (located on interface board).

Tilt actuator assembly is malfunctioning.

Wire conn ect ions loo se. Check all wiring

Interface board is malfunctioning

Replace suspect b ack capacitor wit h known working back capacitor.

- Wait 10 to 20 minutes to allow

Refer to Figure 2-2 for this check. Perform a continu ity che ck on 5 amp BACK fuse.

Replace suspect b ack actuator assembly with known working back actuator assembly.

connec t ions to back actuator assembly.

Replace suspect interface board with known wo rking interface board.

Replace suspect tilt capacitor wit h known working tilt capacitor.

- Wait 10 to 20 minutes to allow

Refer to Figure 5-1 or 5-2 for this check. Perform a continuity check on 5 amp TILT fuse.

Replace suspect tilt actuator assembly with known working tilt actuator assembly.

connections to tilt actuator assembly.

Replace suspect interface board with known wo rking interface board.

Replace back capacitor. Refer to para 4.10.

back actuator motor t o cool. Replace b lown BACK fuse.

See Figure 5-1 or 5-2 for location of fuse.

Replace actuator motor or back actuator assembly. Refer to para 4.21 or 4.12.

Clean any dirt y con ne ct ions. Tighten any loose connec tions. Replace any damaged connections.

Replace interface board. Refer to para 4.4 or 4.5.

Replace tilt capacitor. Refer to para 4.10.

tilt actuator motor t o cool. Replace blown TILT fuse.

See Figure 5-1 or 5-2 for location of fuse.

Replace actuator motor or t ilt actuator assembly. Refer to para 4.21 or 4.16.

Clean any dirt y con ne ct ions. Tighten any loose connec tions. Replace any damaged connections.

Replace interface board. Refer to para 4.4 or 4.5.

Problem Symptom Probable Cause Check Correction

Return To Table Of Contents

TABLE UP and TABLE DOWN functions do not work. All o t her functions work.

FOOT UP and FOOT DOWN functions do not work. All o t her functions work.

Table 2-1. Troubleshooting Guide - Continued

When TABLE UP and TABLE DOWN buttons are pressed, t he table will not move (all o t her functions work).

When FOOT UP and FOOT DOWN buttons are pressed, t he table will not move (all o t her functions work).

TESTING AND TROUBLESHOOTING

Base capacit or i s wea k or blown.

Thermal ove rload switch in base actuator is activated.

5 amp TABLE fuse for TABLE UP and TABLE DOWN functions is blown (located on interface board).

Base act uat or asse mbly is malfunctioning.

Wire connections loose. Check all wiring

Interface board is malfunctioning

Pan holder as se mbly is no t pushe d in all the way; therefore the pan saf et y limit switch is not t r ipped.

Foot capacitor is weak or blown.

Thermal ove rload switch in foot ac tuator is activated.

5 amp FOOT fuse for FOOT UP and FOOT DOWN funct ions is bl own ( located on interface board).

Foot act uator assembly is malfunctioning.

Wire connections loose. Check all wiring

Interface board is malfunctioning

Replace sus pe ct ba se capacitor with known working base capacitor.

- Wait 10 to 20 minutes t o allow

Refer to Figure 2-2 for this check. Perform a conti nuity check on 5 amp TABLE f use.

Replace sus pe ct ba se actuator assembly with known working base actuator assembly.

connec tions to base actuator assembly.

Replace su spec t interface board with known working interface board.

Check that pan holder assembly is pushed in all the way.

Replace suspect foot capacitor with known workin g foot capacit or.

- Wait 10 to 20 minute s t o allow

Refer to Figure 2-2 for this check. Perform a conti nuity check on 5 amp FOOT fuse.

Replace suspect foot actuator assembly with known working foot actuator assembly.

connec tions to base actuator assembly.

Replace su spec t interface board with known working interface board.

SECTION II

Replace base capacitor. Refer to para 4.10.

base actuator motor to cool. Replace blown TABLE f use.

See Figure 5-1 or 5-2 for location of fuse.

Replace actuator motor or base actuator assembly. Refer to para 4.21 or 4.18.

Clean any dir ty conn ect ions. Tighten an y loo se conne ctions. Replace any damaged connections.

Replace interface board. Refer to para 4.4 or 4.5.

Push pan holder assembly in all the way. Inform operator on how the pan safety limit switch works.

Replace foot capacitor. Refer to para 4.10.

foot actuator motor to cool. Replace blown FOOT fuse.

See Figure 5-1 or 5-2 for location of fuse.

Replace actuator motor or foot actuator assembly. Refer to para 4.21 or 4.14.

Clean any dir ty conn ect ions. Tighten an y loo se conne ctions. Replace any damaged connections.

Replace interface board. Refer to para 4.4 or 4.5.

SECTION II

Return To Table Of Contents

TESTING AND TROUBLESHOOTING

Table 2-1. Troubleshooting Guide - Continued

Problem Symptom Probable Cause Check Correction

FOOT UP and FO OT DOWN functions do no t work. All other functions work Continued.

BACK UP function works, but BACK DOWN function does not or BACK DOWN function works, but BACK UP function does not. All other functions work.

TILT UP function works, but TILT DOWN function does not or TILT DOW N func tio n works, but TILT UP function does not. All other functions work.

TABLE UP function works, but TABLE DOWN function does not or TABLE DOWN function works, but TABLE UP function does not. All other functions work.

When FOOT UP and FOOT DOWN buttons are pressed, the table will not move (all other functions work) Continued.

One function operates properly, but the other does not.

TABLE UP does not work, but TABLE DOWN

Pan safety switch is out of adjustment.

Pan sa fe ty limit switch is malfunctioning.

Wire connections loose. Check all wiring

Interface board is malfunctioning (relay for up or down function is malfunctioning).

Back actuator assembly is malfunctioning.

Wire connections loose. Check all wiring

Interface board is malfunctioning (relay for up or down function is malfunctioning).

Tilt actuator assembly is malfunctioning.

Wire connections loose. Check all wiring

Interface board is malfunctioning (relay for up or down function is malfunctioning).

Base actuator assembly is malfunctioning.

Gas spring(s) are weak. Replace suspect gas

Check to see if pan safety limit switch is b e in g tripped by pan holder assembly.

Perform continuity check on pan sa fety limit switch (switch tripped = closed).

conne ctions to back actuator ass embly.

Replace suspect interface board with known working interface board.

Replace suspect back actuator assembly with known working back actuator ass embly.

connections to tilt actuator ass embly.

Replace suspect interface board with known working interface board.

Replace suspect tilt actuator assembly with known working tilt actuator ass embly.

connections to base actuator.

Replace suspect interface board with known working interface board.

Replace suspect base actuator assembly with known working base actuator ass embly.

spring(s) with known

Adjust pa n safety limit switch so it is tripped when pan holder assembly is pushed in all the way.

Replace pan safety limit switch. Refer to para 4.9.

Clean any dirty c onnecti ons. Tighten any loose connections. Replace any damaged connections.

Replace interface board. Refer to para 4.4 or 4.5.

Replace actuator motor or back actuator assembly. Refer to para 4.21 or 4.12.

Clean any dirty c onnecti ons. Tighten any loose connections. Replace any damaged connections.

Replace interface board. Refer to para 4.4 or 4.5.

Replace actuator motor or tilt actuator assembly. Refer to para 4.21 or 4.16.

Clean any dirty c onnecti ons. Tighten any loose connections. Replace any damaged connections.

Replace interface board. Refer to para 4.4 or 4.5.

Replace actuator motor or base actuator assembly. Refer to para 4.21 or 4.18.

Replace gas spring(s). Refer to para 4.19.

Problem Symptom Probable Cause Check Correction

Return To Table Of Contents

FOOT UP function works, but FOOT DOWN function does not or FOOT DOWN function works, but FOOT UP function does not. All other functions work.

Programming function is malfunctioning.

Table 2-1. Troubleshooting Guide - Continued

One function operates properly, but the other does not.

A table position cannot be programmed into memory.

TESTING AND TROUBLESHOOTING

Wire connections loose. Check all wiring

Interface board is malfunctioning (relay for up or down function is malfunctioning).

Foot actuator assembly is malfunctioning.

The receiver and transmitter for a function are not properly aligned or are malfunctioning, resulting in a lost signal.

RF cables for receiver and transmitter are shorted or open.

connections to foot actuator assembly.

Replace suspect interface board with known working interface board.

Replace suspect foot actuator assembly with known working foot actuator assembly.

Refer to Figure 5-1or 5-2 for this check. Check L.E.D. (D1-Base, D2-Foot, D3-Back, and D4-Tilt) on PC logic board. If L.E.D. is illuminated, transmitter or receiver for that function could be out of alignment. Align the receiver and transmitter for a function and then see if the table goes to the proper position when a PROGRAMMED POSITION button is pressed.

Perform continuity check on RF cables.

SECTION II

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

Replace interface board. Refer to para 4.4 or 4.5.

Replace actuator motor or foot actuator assembly. Refer to para 4.21 or 4.14.

Align the receiver and transmitter of a function. If this does not correct problem, replace receiver and transmitter for the suspect function. Refer to para 4.11 for back function, para 4.13 for foot function, para 4.15 for tilt function, para 4.17 for base function.

Replace any damaged RF cables.

Program panel is malfunctioning (switch membrane is malfunctioning).

Program panel interface board is malfunctioning.

PC logic board is malfunctioning.

Replace suspect program panel with known working program panel.

Replace suspect program panel interface board with known working program panel interface board.

Replace suspect PC logic board with known working PC logic board.

Replace program panel. Refer to para 4.7.

Replace program panel interface board. Refer to para 4.7.

Replace PC logic board. Refer to para 4.6.

SECTION II

Return To Table Of Contents

TESTING AND TROUBLESHOOTING

Table 2-1. Troubleshooting Guide - Continued

Problem Symptom Probable Cause Check Correction

Program ming funct ion is malfunct ioning - Continued.

When a PROGRAMMED POSITION button is pressed, the table top does not move to the proper position that was stored in memory.

The receiver and transmitter for a function are not properly aligned or are m alfunctioning, res ul t ing in a los t si gna l.

Refer to Figure 2-1 for this check. Check L.E.D. (D1-Base, D2-Foot, D3-Back, and D4-Tilt) on PC logic board. If L.E.D. is illumin at ed , t ra nsm it te r or receiver for that function coul d be out of alignment. Align the receiver and transmitter for a function and then see if t he t able goes to the proper position when a PROG RAM M ED POSITION button is pressed.

Align the r eceiver and transmitter of a function. If this does not correct problem, replace receiver and transmitter for t he suspect function. Refer to para 4.11 for back function, para 4. 13 for foot function, para 4.15 for tilt function, para 4.17 f or base function.

AUTO RETURN function does not work.

The Base, Tilt, Back, or Foot function drifts by its elf.

When AUTO RETURN “START” button is pressed, nothi ng happens.

After base actuator has lowered table top all the way down, the base actuator continues to run.

Function operat es properly otherwise.

The receiver or transmitter for a funct ion is malfunctioning, but its L.E. D. indicator light is not illuminated on the interface board.

PC logic boar d is malfunctioning.

Program panel is malfunctioning (switch membrane is malfunctioning).

Program panel interface board is malfunctioning.

Base down lim it swi tch is malfunctioning (stuck open).

Base down lim it swi tch is out of adjustment.

Base down lim it swi tch is malfunctioning (stuck closed).

Motor actuator br ake is malfunctioning.

Replace suspect receiver and transmitter with known working receiver and transmitter.

Replace suspect PC logic board with known working PC logic board.

Replace suspect program panel with known working program panel.

Replace suspect program panel interface board with known working program panel interface board.

Perform cont inuit y check on base down limit switch.

Check adjustm ent of base do wn li m i t switch.

Perform cont inuit y check on base down limit switch.

Replace suspect actuator brake com ponents with new components.

Replace receiver and transmitter for suspect function. Refer to para 4.11 for back function, para 4. 13 for foot function, para 4.15 for tilt function, para 4.17 f or base function.

Replace PC logic board. Refer to para 4.6.

Replace program panel. Refer to para 4.7.

Replace program panel interface board. Refer to para 4.7.

Replace bas e down lim it switch. Refer to para 4.20.

Adjust base down limi t switch. Refer to para 4.20.

Replace bas e down lim it switch. Refer to para 4.20.

Replace actuator brake components. Refer to para

4.21.

Table 2-1. Troubleshooting Guide - Continued

Return To Table Of Contents

Problem Symptom Probable Cause Check Correction

Table moves fine for light patient, but will not move or moves slowly for very heavy patient.

Whirling or squeaking noise is heard when an actuator assembly is being run.

Excessive sideways play of table top.

Headrest is not operating properly.

Stirrups are malfunctioning. Stirrups do not lock into

Heavy patients cause table to malfunction.

Noisy actuator. Foreign matter on ball

Table is not stable and can be moved from side to side.

Headrest drifts downward while supporting patients head.

Headrest locking handles pop out of locked position.

one of the three positions properly.

TESTING AND TROUBLESHOOTING

Low voltage is being supplied to table.

Gas spring(s) are weak. Replace suspect gas

Table overloaded with too heavy of a patient.

Capacitor for suspect function is weak.

screw threads and / or lack of lubricant.

Chain assemblies are loose.

Base slide assembly is worn or deformed.

Table base is not resting firmly on floor.

Headrest is out of adjustment.

Headrest handles handle stops need adjusted.

Stirrup index pin needs replaced.

Check voltage at wall receptacle - should be 115 +/- 5 VAC.

spring(s) with known working gas spring(s).

Maximum weight capacity of table is 300 lbs (136.0 kg).

Replace suspect capacitor with known working capacitor.

Check for foreign matter on ball screw threads. Check for lack of lubricant on ball screw threads.

Check tension of chain assemblies.

Check condition of base slide assembly.

Check to verify all four leveling screws are contacting the floor.

Check adjustment of headrest.

Check adjustment of headrest handles handle stops.

Check for damaged parts.

SECTION II

Correct low voltage situation at wall receptacle.

Replace gas spring(s). Refer to para 4.19.

Inform table operator of weight limitation.

Replace capacitor.

Clean all foreign matter off of ball screw threads. Coat ball screw threads with STP treatment oil or equivalent. If actuator assembly is still noisy, replace it.

Adjust tension of chain assemblies. Refer to para

4.22. Replace base slide assembly.

Adjust the leveling screws; there is one located under each corner of the base.

Adjust headrest. Refer to para 4.23 or 4.25.

Adjust headrest handles handle stops. Refer to para

4.24 or 4.26. Replace stirrup index pin or

any other necessary components. Refer to para

4.28.

SECTION II

Return To Table Of Contents

TESTING AND TROUBLESHOOTING

SCHEDULED MAINTENANCE

Return To Table Of Contents

SECTION III

SCHEDULED MAINTENANCE

SECTION III

3.1 Scheduled Maintenance

periodically on the table. These inspections and services should be performed as often as indicated in

Table 3-1 is a Scheduled Maintenance Chart which lists

the chart.

the inspections and services that should be performed

Table 3-1. Scheduled Maintenance Chart

Interval Inspection or Service What to Do

Semi-ann ua lly Obvious damage Visually che ck condit ion of tabl e for obv ious dam ag e suc h as: crack s in compo ne nt s, mi ssing

Fasteners / hardware Check table for missing or loose fasteners / hardware. Rep lace any missing hardware and tighten

Warning and instructional decals

Pivot points / moving parts / accessories

Hand control Check that hand control works correctly. Make sur e all switch membranes work cor r ectly. If

Program panel Check that program panel works correctly. Make sure all switch membranes work correctly. If

Foot control (optional) Check t hat foot control works correctly. Make sure all footswit ches operate pr operly. Replace any

Ball screws of actuator assemblies

Drifting of actuator assemblies

Foot ext ension Check tha t foot extension can be easily removed. Make sure foot section is latched sec urely in

Stirr up ass em blies Check that stirrup assem blies lock into one of three positions. Check for wear . Replace worn

Pan safety limit switch Check t hat pan safety lim it switch is tripped when pan assembly is in fully stowed posi t io n. Adjust

Excessive play in column assembly

Head rest Check that head r est is adjusted properly and will not drift downwar d on it s own under 45 lbs

Elect r ical receptacle (Domest ic units only)

Upholstery Check all upholstery for rips, tears, or excessive wear. Repla ce cushions as necessary. Accessories Check t hat all accessories have all of their com ponents and that they fun ct ion properly. I f

Opera tional Test Perform an Operational Test to determine if the table is operating within its specifications (Refer to

components, dents in components, o r any other visible damage which would cause table to be unsafe to operat e or would comprom ise its performance. Repair table as necessary.

any loose har dw ar e as necessary. Check f or missing or illegible decals. Re place decals as neces sary.

Lubricate all exposed pivot points, moving parts, and accessories with silicone based lubricant.

necessary, replace hand contr ol panel. Refer to par a 4. 8.

necessary, replace program panel. Ref er to para 4.7.

malfunctioning footswitches. Refer t o para 4.27. Extend each actuator assem bly and wipe ball screw threads down with a rag to remove foreign

matter. Coat as much of the ball screw threads as possible with STP treatment oil or equivalent. Run each act uator assemb ly to both ends of its travel a co uple of times t o spread the oil evenly over all of the ball screw th r eads and then rem ove excess oil. If oil does not correct a squealing actuat or assembly, replac e actuator assembly.

Check each actuator assembly for d r ift. Replace actuator assem bly brake components as necessary. Refer to para 4.21.

place when installed.

components as necessary. Refer to para 4.28.

or replace pan safety limit switch if necessary. Refer t o para 4.9. Check tha t column assembly does not have excessi ve si de t o side play. I f necessary, ti ght en

chain. Refer to par a 4. 22. I f t his does not cor re ct pr oblem, r eplace base slide assembly.

(20.4 kg) of static weight. If necessary, adjust head rest. Ref er t o par a 4. 23 or 4. 25 Check tha t the electrica l receptacle is fun ct ioning properly. Replace r eceptacle as ne cessary.

necessary, repair or replace the access or y.

para 2.1). Replace or adjust any malf unct ioning compo nents .

SECTION III

Return To Table Of Contents

SCHEDULED MAINTENANCE

4.1 Introduction

Return To Table Of Contents

SECTION IV

MAINTENANCE / SERVICE

SECTION IV

MAINTENANCE / SERVICE INSTRUCTIONS

WARNING

Refer to the Operator Manual for

complete instructions on operating the table. Failure to do so could result in personal injury.

NOTE

Perform an operational test on the table after the repair is completed to confirm the repair was properly made and that

The following paragraphs contain removal, installation, repair, and adjustment procedures for the table.

all

malfunctions were repaired.

4.2 Shrouds Removal / Installation (Applies to Units With Serial Numbers AV-1000 Thru AV2888)

A. Removal

(1) If possible, raise TILT UP function all the way

up.

WARNING

Always disconnect the power cord

from the wall outlet before removing any of the table's covers / shrouds or making any repairs to prevent the possibility of electrical shock. Failure to comply with these instructions could result in severe personal injury or death.

(2) Unplug table power cord from wall outlet.

ACCESS

HOLES

OPERAT OR'S

CONSOLE

NOTE

Remove guide weldment (5) from side of table which does not have operator's console. Also, early units do not have access holes with plugs (1).

(3) Remove two plugs (1, Figure 4-1) from access

holes; then remove two screws (2), lockwashers (3), two screws (4) and guide weldment (5) from seat weldment (6).

(4) Remove six screws (7) securing R.H. and L.H.

shrouds (8) together.

MA302200

Figure 4-1. Shrouds Removal / Installation

NOTE

Remove shroud from side of table which does not have operator's console.

(5) Remove two screws (9) and either L.H. or R.H.

shroud (8) from inner member weldment (10).

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

B. Installation

(1) Coat threads of two screws (9) with removable

threadlocking adhesive (Loctite 242).

(2) Install shroud (8) on inner member weldment

(10) and secure with two screws (9).

(3) Secure L.H. and R.H. shrouds (8) together with

six screws (7).

(4) Install guide weldment (5) on seat weldment (6)

and secure with two screws (4), lockwashers (3), and screws (2).

NOTE

Early units do not have access holes with plugs.

(5) Install two plugs (1) in access holes. (6) Plug table power cord into wall outlet.

ACCESS

HOLES

4.3 Shrouds Removal / Installation (Applies to Units With Serial Numbers AV-2889 Thru Present and DJ-1000 Thru Present)

A. Removal

(1) If possible, raise TILT UP function all the way

up.

WARNING

Always disconnect the power cord

(2) Unplug table power cord from wall outlet. (3) Remove six screws (1, Figure 4-2) and cover

(2) from R.H. and L.H. shrouds (3).

(4) Remove three screws (4) securing R.H. and

L.H. shrouds (3) together.

OPERAT OR'S

CONSOLE

Figure 4-2. Shrouds Removal / Installation

NOTE

Remove stirrup housing from side of table which does not have operator's console.

(5) Remove one screw (5), two screws (6),

lockwashers (7), and stirrup housing (8) from seat weldment (9).

MA302300

NOTE

Return To Table Of Contents

Remove shroud from side of table which does not have operator's console.

(6) Remove two screws (10) and either L.H. or

R.H. shroud (3) from inner member weldment (11).

B. Installation

(1) Coat threads of two screws (10) with removable

threadlocking adhesive (Loctite 242).

(2) Install shroud (3) on inner member weldment

(11) and secure with two screws (10).

(3) Secure L.H. and R.H. shrouds (3) together with

three screws (4).

SECTION IV

MAINTENANCE / SERVICE

(2) Unplug table power cord from wall outlet. (3) If TABLE UP function cannot be raised all the

way up, remove shrouds (Refer to para 4.2 or

4.3).

(4) Remove two screws (1, Figure 4-3) and back

lower shroud (2) from L.H. and R.H support channels (3).

(5) Tag and disconnect four wire harnesses (4)

from connectors of interface board (5).

(6) Tag and disconnect three wires (6) from

terminals of interface board (5).

(7) Remove four screws (7), starwashers (8),

interface board (5), and spacers (9) from brace (10).

(4) Install stirrup housing (8) on seat weldment (9)

and secure with two lockwashers (7), screws (6), and one screw (5).

(5) Install cover (2) on R.H. and L.H. shrouds (3)

and secure with six screws (1).

(6) Plug table power cord into wall outlet.

4.4 Interface Board Removal / Installation (Early Units)

NOTE

This procedure applies to units with Serial Number AV-1000 Thru AV-2217 and also AV-2229, AV-2231, AV-2236, AV-2238, AV-2244, AV-2247, and AV-

2248.

A. Removal

(1) If possible, raise TABLE UP function all the way

up.

WARNING

Always disconnect the power cord

B. Installation

NOTE

Four new standoffs, starwashers, and screws are supplied with the new interface board kit.

(1) Install four new standoffs (11) on brace (10) by

installing standoffs into original mounting holes for interface board.

(2) Install interface board (5) on standoffs (11) and

secure with four starwashers (8) and new screws (7).

(3) Connect three wires (6) to terminals of interface

board (5).

(4) Connect four wire harnesses (4) to connectors

of interface board (5).

(5) Install back lower shroud (2) on L.H. and R.H.

support channels (3) and secure with two screws (1), making sure locator pins are inserted thru locator holes of back lower shroud.

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

(6) Remove two screws (1, Figure 4-4) and lower

the console cover (2) down.

(7) Check Midmark part number on PC logic

board (3). If part number is

Revision A

adapter as described in steps 8 thru 10. If part number is not install adapter; go to step 11.

015-0460-00 Revision B

015-0460-00 Revision C or later

015-0460-00

, install

, do

LOCA TOR

HOLES

Figure 4-3. Interface Board Removal / Installation

LOCA TOR

PINS

MA302400

ADAPTER

BOARD

PLUG

ADAPTER

BOARD

PORT

015-0460-00

REVISION "X"

NOTE

The console cover is hinged. After removing two screws (3), the front edge of the console cover may be lowered.

HAND

CONTROL

PORT

Figure 4-4. Adapter Board Installation

MIDMARK

PART NUMBER

MA302500

+ 92 hidden pages

Midmark 411 Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual