Midmark 222, 223, 622, 623 Service manual

®

Go To Table Of Contents

Style B

Barrier-Free
Examination Table

Model Numbers:

222
223
622
623

-001 thru -017

-001 thru -016

-001 thru -008

-001 thru -010

Service and

Parts Manual

SF-1822 Part No. 004-0363-00 Rev. F (12/18/12)

FOR USE BY MIDMARK TRAINED TECHNICIANS ONLY

GENERAL INFORMATION

Symbols ....................................iii

Ordering Parts ......................... iii

Serial Number Location .......... iii

Specifications ........................... iv

Range of Motion ............................ iv

Model Identification /
Compliance Charts:

222 ................................................

223 ................................................

622 / 623 .......................................

General Information

Scheduled Maintenance ............ viii

Warranty Information................. ix

OPERATION &
TROUBLESHOOTING

Attention!

If table has no power, refer to Base Up / Down

Function to troubleshoot

Section A

Base Up / Down Function........ A-2

Back Up / Down Function:

Manual (222 / 622) ........................

Power (223 / 623) ..........................

Optional Features

Drawer Heater System ............. A-23

Table Receptacle ...................... A-27

Auto Return Function .............. A-29

Upholstery Heater System ...... A-32

(No Up or Down)

v
vi
vii

.

A-11
A-14

ACCESS PROCEDURES

Table Shrouds

Removal/Installation ......... C-2

Raising / Lowering

Table Manually .................. C-5

Upholstery Removal/Installation:

Ritter models.......................

Section C

Midmark models .................

Chair Arm / Brace

Removal ............................. C-8

Top Cover

Removal / Installation ....... C-9

Back Limit Switch Access . C-9

WIRING DIAGRAMS

222 ........................................ D-1

223 ........................................ D-1

622 ........................................ D-1

623 ........................................ D-1

C-6*
C-7*

Section D

EXPLODED VIEWS / PARTS LISTS

222 .........................................E-2

223 .........................................E-3

622 .........................................E-4

623 .........................................E-5

Section E

COMPONENT
TESTING & REPLACEMENT

Fuses......................................... B-2

Limit Switches .......................... B-4

Foot Control ............................. B-6

Base / Back Actuator ............... B-11

Section B

Back Release Mechanism ....... B-17

Main PC Board ......................... B-19

Table Of Contents

Drawer Heater System ............ B-23

Upholstery Heater System ...... B-29

FOR USE BY MIDMARK TRAINED TECHNICIANS ONLY

* Indicates multiple pages due to model / serial number break(s)

Rev. 7/09

General Information

Go To Table Of Contents

Symbols

Caution

Indicates a potentially hazardous situation
which could result in injury if not avoided.

Equipment Alert

Indicates a potentially hazardous situation
which could result in equipment damage
if not avoided.

Note

Amplifies a procedure, practice, or condition.

In Section A, test the components in the order indicated.
(ex.

1st

then,













These symbols are used throughout this manual to represent the
operational status of table functions and components.

Refer to Section B for component testing procedures.

2nd

)







Ordering Parts

The following information is required when ordering parts:

• Serial number & model number

• Part number for desired part.

[Refer to Exploded Views / Parts Lists section]

Non-warranty part orders may be faxed to Midmark using
the Fax Order Form in the back of this manual.

For warranty part orders, call Midmark's Technical Service
Department with the required information.

Hours: 8:00 am until 5:00 pm EST [Monday - Friday]
Phone: 1-(800)-Midmark

Serial Number Location

General Information

Indicates the function / component is working properly.
No action required.

Indicates the function / component is working,
but a problem exists.

Indicates the function / component is not working at all.

MA731100i

Serial / Model

Number Label

(exact location may vary)

© Midmark Corporation 2003 SF-1838

iii

Rev. 8/24/12

General Information

Go To Table Of Contents

Specifications

Patient Weight (maximum) ................................400 lbs (181.4 kgs)

Paper Roll (maximum size): ..............................21 in. long x 3.5 in. diameter

(53.3 x 8.9 cm)

Export models ....................................................19.7 in. long x 4.7 in. diameter

(50 cm x 12 cm)

Range of Motion .................................................

Dimensions .........................................................

See illustration on this page
See illustration on next page

Max.

37 +0.5 in.

(94 +1.3 cm)

Weight of Table:

[230 VAC models only: 230 V transformer adds 14.5 lbs (6.5 kg)]

w/ upholstery .....................................................325 lbs (147.4 kg)

w/packaging & skid

Weight of Upholstery:

w/packaging

Power Cord(s)

Electrical Rating: ................................................

Foot Control Voltage: ......................................... 14 VAC, SELV (Safety Extra Low Voltage)

Duplex Receptacle

maximum load: .................................................

Fuses: ..................................................................Refer to:

Duty Cycle

:

Actuator motor run time

(Domestic: 30 seconds ON / 5 minutes OFF)

(Export: 25 seconds ON / 7 minutes OFF)

Receptacle / Drawer Heater / Uph. Htr

Classifications: ...................................................Class I, Type B Applied Part,

Ordinary Equipment, Intermittent Operation
(Domestic: 30 seconds ON / 5 minutes OFF)

(Export: 25 seconds ON / 7 minutes OFF)

(no upholstery) .................

(shipped separately) .................

[115V models have two cords]

: ...................................... Intermittent Operation

: ......8 ft. (243.8 cm) long

: .............. Continuous Operation

375 lbs (192.7 kg)

40 lbs (18.1 kg)

See Compliance Charts

115 VAC, 5A

Section E - Fuses

623 only

Home Height

20 +0.5 in.

(50.8 +1.3 cm)

0° (horizontal) to

+80° +5°

Min.

18 +0.5 in.

(45.7 +1.3 cm)

Pelvic Tilt

(optional)

Max: 7° +2°

Min: 1.5°

Protection against ingress of fluids: ................ IPX0

Regulatory Compliance: ....................................

Table Speeds

Base ...................................................................... 14 - 26 seconds

Back

(models w/power back) ...............................

iv

© Midmark Corporation 2003 SF-1838

(by function):

Rev. 12/18/12

See Regulatory Compliance Charts

15 - 20 seconds

[Foot Control only: IPX1]

MA599801i

Model Identification / Compliance Chart - 222

Go To Table Of Contents

General Information

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200-222 elbaTcisaBrettiR

300-222elbaTcisaBrettiR

400-222 elbaTcisaBrettiR

500-222elbaTcisaBrettiR

600-222 elbaTcisaBrettiR

700-222elbaTcisaBrettiR

800-222 elbaTcisaBrettiR

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511 5.01 06/05

5116 06/05

511 11 06/05

03257.206/05

032 3 06/05

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Fire Code Ratings:

All upholstery complies with California Bureau of
Home Furnishing Technical Bulletin 117.

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Bulletin 133.

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v

© Midmark Corporation 2003 SF-1838

General Information

Go To Table Of Contents

Model Identification / Compliance Chart - 223

ledoM noitpircseD

100-322

200-322

300-322

400-322

500-322

600-322

700-322

800-322

900-322

010-322

110-322

210-322

310-322

410-322

510-322

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511 5.21 06/05

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Optional upholstery is available that complies
with California Bureau of Home Furnishing Technical
Bulletin 133.

vi

© Midmark Corporation 2003 SF-1838

Model Identification / Compliance Chart - 622 / 623

Go To Table Of Contents

General Information

ledoM noitpircseD

100-226

200-226

300-226

400-226

500-226

600-226

700-226

800-226

100-326

200-326

300-326

400-326

500-326

600-326

700-326

800-326

900-326

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511 5.31 06/05

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All upholstery complies with California Bureau of
Home Furnishing Technical Bulletin 117.

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Optional upholstery is available that complies

)zH(

with California Bureau of Home Furnishing Technical
Bulletin 133.

Fire Code Ratings:

© Midmark Corporation 2003 SF-1838

vii

General Information

Interval

Inspection or

Service

Service, Adjust , Repair

and / or Replace as Required

(Refer to appropriate S&P or Quick Reference Guide)

222 223 622 623

Clean upholstery with diluted bleach solution.

10:1 (water:bleach)

X X X X

Wipe painted metal & plastic surfaces with a clean soft cloth and

mild cleaner. (NOTE: Periodic application of common furniture

wax will ease cleaning, and maintain the luster of the surfaces).

X X X X

Obvious Damage

Visually inspect components for damage that could cause

problems during operation or unsafe operation.

X X X X

Check all mechanical functions using the foot control. Repeat

using the hand control when present.

X X X X

Check manual back releaase mechanism for proper operation.

X X X X

Table shrouds should move smoothly & quietly when base is

raised & lowered. (NOTE: There are plastic glides on the shroud

tabs. Missing glides may result in noisy operation.)

X X X X

Labels / Decals Replace any missing or illegible labels.

X X X X

Lubricate back hinge with light machine oil.

X X X X

Lubricate footrest slide with household furniture wax.

X X X X

Hardware All fasteners must be present and fastened securely.

X X X X

Inspect power cord and all wiring for damage.

X X X X

Be sure all electrical connections are tight.

X X X X

Stirrups

Check that stirrups extend easily, and lock securely into each

lateral position.

X X X X

Date of Service: _____/____/____

Location:

Service

Technician:

Serial Number:

Mechanical

Operation

Semi-Annually

Lubricate

Scheduled Maintenance / Barrier-Free® Examination Table

Weekly

Cleaning

Electrical System

Model:

Go To Table Of Contents

viii

© Midmark Corporation 2003 SF-1838

Rev. 10/24/12

Warranty Information

Go To Table Of Contents

General Information

SCOPE OF WARRANTY

Midmark Corporation (“Midmark”) warrants to the original purchaser its new Alternate Care
products and components (except for components not warranted under “Exclusions”)
manufactured by Midmark to be free from defects in material and workmanship under normal use
and service. Midmark’s obligation under this warranty is limited to the repair or replacement, at
Midmark’s option, of the parts or the products the defects of which are reported to Midmark
within the applicable warranty period and which, upon examination by Midmark, prove to be
defective.

APPLICABLE WARRANTY PERIOD

The applicable warranty period, measured from the date of delivery to the original user, shall be
one (1) year for all warranted products and components.

EXCLUSIONS

This warranty does not cover and Midmark shall not be liable for the following: (1) repairs and
replacements because of misuse, abuse, negligence, alteration, accident, freight damage, or
tampering; (2) products which are not installed, used, and properly cleaned as required in the
Midmark “Installation” and or “Installation / Operation Manual for this applicable product. (3)
products considered to be of a consumable nature; (4) accessories or parts not manufactured
by Midmark; (5) charges by anyone for adjustments, repairs, replacement parts, installation, or
other work performed upon or in connection with such products which is not expressly
authorized in writing in advance by Midmark.

EXCLUSIVE REMEDY

Midmark’s only obligation under this warranty is the repair or replacement of defective parts.
Midmark shall not be liable for any direct, special, indirect, incidental, exemplary, or
consequential damages or delay, including, but not limited to, damages for loss of profits or loss
of use.

NO AUTHORIZATION

No person or firm is authorized to create for Midmark any other obligation or liability in
connection with the products.

Additional Information

Failure to follow the guidelines listed below will void the
warranty and/or render the table unsafe for use.

• If a malfunction is detected, do not use the table until

necessary repairs are made.

• Do not attempt to disassemble table, replace

components, or perform adjustments unless you are
a Midmark authorized service technician.

• Do not use another manufacturer's parts to replace

malfunctioning components. Use only Midmark
replacement parts

THIS WARRANTY IS MIDMARK’S ONLY WARRANTY AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED. MIDMARK MAKES NO IMPLIED WARRANTIES OF
ANY KIND INCLUDING ANY WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY
PARTICULAR PURPOSE. THIS WARRANTY IS LIMITED TO THE REPAIR OR REPLACE
MENT OF DEFECTIVE PARTS.

SF-1487 REV. A1

© Midmark Corporation 2003 SF-1838

ix

Troubleshooting

Go To Table Of Contents

Click on the Go To Page button and enter the desired

page number. (Note: Letters are case sensitve. ex. A-2)

Go To Page:

Troubleshooting

Table Function Page

Base Up / Down ................................... A-2

Back Up / Down .................................... A-11

Drawer Heater ....................................... A-23

Table Receptacle .................................. A-27

Auto Return .......................................... A-29

Upholstery Heater System.................... A-32

Section A

Models:

Serial Numbers:

© Midmark Corporation 2003 SF-1838

A-1

Troubleshooting

Go To Table Of Contents

Go To Page:

Base UP / DOWN Function

This illustration shows only the components that affect the Base UP / DOWN function.

Refer to the following page for a detailed description of current flow during this function.

Primary Fuses

NOTE:

Line voltage (230 VAC) is supplied thru
two fuses

inlet)

line voltage to 115 VAC before it
reaches the PC Board.

230 VAC models only

(located by the power cord

to a transformer that reduces the

[All Functions]

115 VAC

[Base Up & Down Functions]

Base Motor Fuse

Troubleshooting

[Base Up / Down Function]

Problem Page

No UP or DOWN Functions

No UP Function (DOWN - OK)
No DOWN Function (UP - OK)

Base Drifts Down .................................

Moves Wrong Direction .......................

Noisy Operation ...................................

Moves Slowly ....................................

................ A-4

............ A-5

............ A-6

A-7

A-8

A-9

A-10

A-2

© Midmark Corporation 2003 SF-1838

Transformer Fuse

[All Functions]

Foot Control

Base Up / Down

Main PC Board

14 VAC

Base Up Limit Switch

[Base Up will not operate if switch is tripped]

Models:

Serial Numbers:

All

All

48 VDC

MA627300i

Base Actuator

Base Down Limit Switch

[Base Down will not operate if switch is tripped]

Troubleshooting

Go To Table Of Contents

Base UP / DOWN Function

NOTE

On 230 VAC models, line voltage
supplied thru two fuses
to a transformer that reduces the line voltage
to 115 VAC before it gets to the PC board.

Power To Foot Control

115 VAC is supplied thru the two primary fuses

(F1 & F2)
[F4 fuse protects the transformer]

The transformer reduces the line voltage and
supplies 14 VAC to the foot control.

to the transformer on the PC board.

(located by IEC inlet)

(230 VAC)

.

is

Base Up Operation

NOTE

If the Base Up limit switch is tripped (open),
the Base Up function will not operate.

When the Base Up function is activated,
current
switch
on the PC Board energizes the base relay.

[F3 fuse protects the base motor]

(14 VAC)

(N.O)

flows thru the Up function foot

, then back to the PC board. Circuitry

.

NOTE

The Base Up/Down relay has four contacts:

(2) Normally Open: Base Up function

(2) Normally Closed: Base Down function

When the base relay is energized,
the (2) Normally Open contacts of the relay
close. When these contacts close, current
(

48 VDC)

When current flows to the actuator thru the
Normally Open contacts of the relay, the actuator
motor runs and raises the table.

Actuator Motor runs until:

1. Foot control pedal is released.

2. Base Up limit switch is tripped.

3. 26 second software time limit is reached.

4. Fuse(s) opens (blows).

flows to the actuator motor.

[Primary, Base Motor, Transformer fuse]

Base Down Operation

NOTE

If the Base Down limit switch is tripped (open),
the Base Down function will not operate.

When the Base Down function is activated,
current
switch

(14 VAC)

(N.O.)

flows thru the Down function foot

, then back to the PC Board.

NOTE

The Base Up/Down relay has four contacts:

(2) Normally Open: Base Up function

(2) Normally Closed: Base Down function

When this voltage is applied, current
to the actuator motor thru the (2) Normally Closed
contacts of the Base Up/Down relay.

[The relay does not energize].

When voltage flows to the actuator thru the Normally
Closed contacts of the relay, the actuator motor runs
andlowers the table.

Actuator Motor runs until:

1. Foot control pedal is released.

2. Base Down limit switch is tripped.

3. 26 second software time limit is reached.

4. Fuse(s) opens (blows).

[Primary, Base Motor, Transformer fuse]

(48 VDC)

flows

Models:

Serial Numbers:

All

All

Equipment Alert

If an overload condition* is detected the PC board will "beep" and all power functions will be
disabled. Release the function button, remove load, then retry function.

*(weight limit exceeded, mechanical binding, etc),

Base Up / Down

© Midmark Corporation 2003 SF-1838

Rev. 8/24/12

A-3

Troubleshooting

Go To Table Of Contents

Go To Page:

Refer To: Page

Fuses ........................................... B-2

Limit Switches.............................. B-4

Foot Control ................................. B-6

Base / Back Actuator ................... B-11

Base Relay Test .......................... B-20

Wiring Diagrams ............................ D-1

Exploded Views / Part Numbers ....E-1

Loose Wire Connections

(esp. Foot Control & Base Up/Down Limit Switches)

1st







noitcnuFsutatSmelborP

Base Up No movement

Base Down No movement

Perform

Refer to: Section B - Foot Control

Footswitch Test

A-4

© Midmark Corporation 2003 SF-1838

Base Actuator

To isolate the malfunction,
Refer to: Section B - Base / Back Actuator

3rd







Base Up / Down

Rev. 2/08

Serial Numbers:

4th

Models:







MA626600i

All

All

230 V models only

230 VAC
Transformer Fuses (2)

Refer to: Section B - Fuses

230 VAC Transformer

Main PC Board Fuse(s):

[Test fuses: F1, F2, F3, & F4]
Refer to: Section B - Fuses

Perform

Refer to: Section B - Main PC Board

Base Relay Test







230 V models only

2nd







5th













noitcnuFsutatSmelborP

Go To Table Of Contents

Go To Page:

Base Up No movement

Base Down OK

Loose Wire Connections

(esp. Foot Control & Base Up/Down Limit Switches)

1st







Troubleshooting

Refer To: Page

Limit Switches.............................. B-4

Footswitch Test ........................... B-6

Base Relay Test .......................... B-20

Wiring Diagrams ............................ D-1

Exploded Views / Part Numbers ....E-1

Perform

Refer to: Section B - Foot Control

Models:

Serial Numbers:

Base Up Limit Switch

Perform

Refer to: Section B - Limit Switches

Footswitch Test

Limit Switch Test.

3rd

All

All







2nd







MA626800i

Perform

Refer to: Section B - Main PC Board

Base Relay Test

© Midmark Corporation 2003 SF-1838

4th







Base Up / Down

Rev. 2/08

A-5

Troubleshooting

Go To Table Of Contents

Go To Page:

Refer To: Page

Limit Switches.............................. B-4

Foot Control ................................. B-6

Base Relay Test .......................... B-20

Wiring Diagrams ............................ D-1

Exploded Views / Part Numbers ....E-1

Loose Wire Connections

(esp. Foot Control & Base Down Limit Switches)

1st







noitcnuFsutatSmelborP

Base Up OK

Base Down No movement

Perform

Refer to: Section B - Foot Control

A-6

© Midmark Corporation 2003 SF-1838

Footswitch Test

Base Up / Down

Base Down Limit Switch

Perform

Refer to: Section B - Limit Switches

Rev. 2/08

Limit Switch Test.

3rd







Models:

Serial Numbers:

All

All

2nd







MA626700i

Perform

Refer to: Section B - Main PC Board

Base Relay Test

4th







noitcnuFsutatSmelborP

Go To Table Of Contents

Go To Page:

Base Up Table drifts down.

Base Down Table drifts down.

Run table up, then unplug power cord.

If drifting stops, perform
If drifting continues, check Base Actuator.

Footswitch Test

.

1st







Troubleshooting

Refer To: Page

Foot Control ................................. B-6

Base / Back Actuator ................... B-11

Wiring Diagrams ............................ D-1

Exploded Views / Part Numbers ....E-1

Models:

Serial Numbers:

Perform

Refer to: Section B - Foot Control

Footswitch Test

All

All







MA626900i

Base Actuator

To isolate the malfunction,
Refer to: Section B - Base / Back Actuator







© Midmark Corporation 2003 SF-1838

Base Up / Down

A-7

Troubleshooting

Go To Table Of Contents

Go To Page:

Refer To: Page

Main PC Board Replacement ....... B-22

Wiring Diagrams ............................ D-1

Exploded Views / Part Numbers ....E-1

noitcnuFsutatSmelborP

Base Up Press Base UP pedal,

table moves DOWN.

Base Down Press Base DOWN pedal,

table moves UP.

A-8

© Midmark Corporation 2003 SF-1838

Wire connections

(Check Foot Control & Base Actuator motor connections)

Base Up / Down

(reversed?)

Models:

Serial Numbers:

1st







All

All

MA627000i

Replace Main PC Board

Refer to: Section B - Main PC Board

2nd







noitcnuFsutatSmelborP

Go To Table Of Contents

Go To Page:

Base Up Noisy / grinding / squeaking

Base Down Noisy / grinding / squeaking

Troubleshooting

Refer To: Page

Base Actuator Replacement .........B-11

Table Shroud Removal ..................C-2

Wiring Diagrams ............................ D-1

Exploded Views / Part Numbers ....E-1

Clean and lubricate base actuator threads.

Recommended lubricant: Lithium grease
If necessary, refer to:

Section C - Table Shroud Removal

1st







Remove any debris from base slides.

Do not lubricate base slides.
If necessary, refer to:

Models:

Serial Numbers:

2nd

Section C - Table Shroud Removal

All

All







MA627100i

3rd

Replace Base Actuator

Refer to: Section B - Base / Back Actuator







© Midmark Corporation 2003 SF-1838

Base Up / Down

A-9

Troubleshooting

Go To Table Of Contents

Go To Page:

Refer To: Page

Wiring Diagrams .......................... D-1

Exploded Views / Part Numbers .. E-1

Did patient exceed 400 lb. weight limit?

Inform staff that max. patient weight is 400 lbs.

1st







noitcnuFsutatSmelborP

Base Up Moves slowly

Base Down Moves slowly

A-10

© Midmark Corporation 2003 SF-1838

Base Up / Down

Models:

Serial Numbers:

All

All

MA627200i

Low voltage to table

Required voltage:

115 VAC models ............... 115

230 VAC models .............. 230

2nd

+10% VAC
+10% VAC







MA630300i

Back UP / DOWN Function (Manual)

Go To Table Of Contents

Go To Page:

This illustration shows only the components that affect the Back UP / DOWN function.

Cam

Troubleshooting

Troubleshooting

[Back Up / Down Function (Manual)]

Problem Page

Back Drifts Up or Down .....................

No Movement ....................................

Difficult To Position ............................

A-12

A-13

A-13

Back Up / Down Operation

When either back release handle is squeezed,
linkage causes the cam to rotate. When the cam
compresses the pin on the top of the gas
cylinder, the pressure inside the cylinder is
released and the back section can be positioned
Up or Down.

Back Release

Handle

(Manual)

Gas Cylinder

Models:

Serial Numbers:

222 (all)

All

622 (all)

All

Back Up / Down

Manual

© Midmark Corporation 2003 SF-1838

A-11

Troubleshooting

Go To Table Of Contents

Go To Page:

Refer To: Page

Back Release Handle

Adjustment ............................. B-17

Gas Cylinder

Replacement & Adjustment.... B-18

Exploded Views / Part Numbers .. E-1

Gas cylinder screwed in too far.

Perform Gas Cylinder Adjustment
Refer to: Section B - Back Release Mechanism

1st







noitcnuFsutatSmelborP

Back Up/Down Back section drifts

2nd





Perform

Handle Adjustment

Refer to: Section B - Back Release Mechanism

Replace Gas Cylinder

Refer to: Section B - Back Release Mechanism

Back Release

3rd









A-12

© Midmark Corporation 2003 SF-1838

Back Up / Down

Manual

Models:

Serial Numbers:

222 (all)

All

MA630400i

622 (all)

All

noitcnuFsutatSmelborP

Go To Table Of Contents

Go To Page:

Back Up/Down No movement

Troubleshooting

Difficult to position

Gas cylinder not screwed in far enough.

Perform Gas Cylinder Adjustment
Refer to: Section B - Back Release Mechanism

3rd





Replace Gas Cylinder

Refer to: Section B - Back Release Mechanism



1st







Refer To: Page

Back Release Handle

Adjustment ............................. B-17

Gas Cylinder

Replacement & Adjustment.... B-18

Exploded Views / Part Numbers .. E-1

2nd

Perform

Handle Adjustment

Refer to: Section B - Back Release Mechanism

Back Release







Models:

Serial Numbers:

222 (all)

All

622 (all)

All

MA630400i

Back Up / Down

Manual

© Midmark Corporation 2003 SF-1838

A-13

Troubleshooting

Go To Table Of Contents

Go To Page:

Back UP / DOWN Function (Power)

This illustration shows only the components that affect the Back UP / DOWN function.

Refer to the following page for a detailed description of current flow during this function.

Primary Fuses

[All Functions]

NOTE:

Line voltage (230 VAC) is supplied thru
two fuses

inlet)

line voltage to 115 VAC before it
reaches the PC Board.

230 VAC models only

(located by the power cord

to a transformer that reduces the

115 VAC

[Back Up / Down Functions]

Back Motor Fuse

Troubleshooting

[Back Up / Down Function (Power)]

Problem Page

No UP or DOWN Functions

No DOWN Function (UP - OK)
No UP Function (DOWN - OK)

Back Drifts Down .................................

Moves Wrong Direction .......................

Noisy Operation ...................................

Moves Slowly ......................................

................ A-16

............ A-17

............ A-18

A-19

A-20

A-21

A-22

A-14

© Midmark Corporation 2003 SF-1838

Transformer Fuse

[All Functions]

Back Up / Down

Power

14 VAC

Foot Control

Back Up Limit Switch

[Back Up will not operate if switch is tripped]

Models:

Serial Numbers:

Main PC Board

223 (all)

All

48 VDC

Back Actuator

Back Down Limit Switch

[Back Down will not operate if switch is tripped]

MA630200i

623 (all)

All

Troubleshooting

Go To Table Of Contents

Back UP / DOWN Function
(Power)

NOTE

On 230 VAC models, line voltage
supplied thru two fuses
to a transformer that reduces the line voltage
to 115 VAC before it gets to the PC board.

Power To Foot Control

115 VAC is supplied thru the two primary fuses

(F1 & F2)
[F4 fuse protects the transformer]

The transformer reduces the line voltage and
supplies 14 VAC to the foot control.

to the transformer on the PC board.

(located by IEC inlet)

(230 VAC)

.

is

Back Up Operation

NOTE

If the Back Up limit switch is tripped (open),
the Back Up function will not operate.

When the Back Up function is activated,
current
switch
on the PC Board energizes the back relay.

[F5 fuse protects the back motor]

(14 VAC)

(N.O)

flows thru the Up function foot

, then back to the PC board. Circuitry

.

NOTE

The Back Up/Down relay has four contacts:

(2) Normally Open: Back Up function

(2) Normally Closed: Back Down function

When the back relay is energized,
the (2) Normally Open contacts of the relay
close. When these contacts close, current
(

48 VDC)

When current flows to the actuator thru the
Normally Open contacts of the relay, the actuator
motor runs and raises the back section.

Actuator Motor runs until:

1. Foot control pedal is released.

2. Back Up limit switch is tripped.

3. 26 second software time limit is reached.

4. Fuse(s) opens (blows).

flows to the actuator motor.

[Primary, Back Motor, Transformer fuse]

Back Down Operation

NOTE

If the Back Down limit switch is tripped (open),
the Back Down function will not operate.

When the Back Down function is activated,
current
switch

(14 VAC)

(N.O.)

flows thru the Down function foot

, then back to the PC Board.

NOTE

The Back Up/Down relay has four contacts:

(2) Normally Open: Back Up function

(2) Normally Closed: Back Down function

When this voltage is applied, current
to the actuator motor thru the (2) Normally Closed
contacts of the Back Up/Down relay.

[The relay does not energize].

When voltage flows to the actuator thru the Normally
Closed contacts of the relay, the actuator motor runs
and lowers the back section.

Actuator Motor runs until:

1. Foot control pedal is released.

2. Back Down limit switch is tripped.

3. 26 second software time limit is reached.

4. Fuse(s) opens (blows).

[Primary, Back Motor, Transformer fuse]

(48 VDC)

flows

Models:

Serial Numbers:

223 (all)

All

623 (all)

All

Equipment Alert

If an overload condition* is detected the PC board will "beep" and all power functions will be
disabled. Release the function button, remove load, then retry function.

*(weight limit exceeded, mechanical binding, etc),

Back Up / Down

Power

© Midmark Corporation 2003 SF-1838

Rev. 8/24/12

A-15

Troubleshooting

Go To Table Of Contents

Go To Page:

Refer To: Page

Fuses ........................................... B-2

Limit Switches.............................. B-4

Foot Control ................................. B-6

Base / Back Actuator ................... B-11

Back Relay Test .......................... B-21

Wiring Diagrams ............................ D-1

Exploded Views / Part Numbers ....E-1

noitcnuFsutatSmelborP

Back Up No movement

Back Down No movement

Loose Wire Connections

(esp. Foot Control & Back Up/Down Limit Switches)

Main PC Board Fuse(s):

[Test fuses: F1, F2, F4, & F5]
Refer to: Section B - Fuses

Perform

Refer to: Section B - Main PC Board

Perform

Refer to: Section B - Foot Control

Footswitch Test

Back Relay Test

3rd







1st







5th

2nd













MA630100i

Back Actuator

To isolate the malfunction,
Refer to: Section B - Base / Back Actuator

230 V models only

230 VAC
Transformer Fuses (2)

Refer to: Section B - Fuses

230 VAC Transformer

4th

230 V models only



















A-16

© Midmark Corporation 2003 SF-1838

Back Up / Down

Power

Rev. 5/07

Models:

Serial Numbers:

223 (all)

All

623 (all)

All

noitcnuFsutatSmelborP

Go To Table Of Contents

Go To Page:

Back Up OK

Back Down No movement

Loose Wire Connections

(esp. Foot Control & Back Down Limit Switches)

1st







Troubleshooting

Refer To: Page

Limit Switches.............................. B-4

Foot Control ................................. B-6

Back Relay Test ......................... B-18

Wiring Diagrams .......................... D-1

Exploded Views / Part Numbers .. E-1

Perform

Refer to: Section B - Foot Control

Footswitch Test

3rd







MA629200i

Back Down Limit Switch

Perform

Refer to: Section B - Limit Switches

Limit Switch Test.

Perform

Refer to: Section B - Main PC Board

Back Relay Test

2nd







4th







Models:

Serial Numbers:

223 (all)

All

623 (all)

All

Back Up / Down

Power

© Midmark Corporation 2003 SF-1838

A-17

Troubleshooting

Go To Table Of Contents

Go To Page:

Refer To: Page

Limit Switches.............................. B-4

Foot Control ................................. B-6

Back Relay Test ......................... B-18

Wiring Diagrams .......................... D-1

Exploded Views / Part Numbers .. E-1

Loose Wire Connections

(esp. Foot Control & Back Up Limit Switches)

1st







noitcnuFsutatSmelborP

Back Up No movement

Back Down OK

Back Up Limit Switch

Perform

Refer to: Section B - Limit Switches

Limit Switch Test.

2nd







A-18

© Midmark Corporation 2003 SF-1838

Perform

Refer to: Section B - Foot Control

Back Up / Down

Power

Footswitch Test

Serial Numbers:

3rd







Models:

223 (all)

All

MA629100i

623 (all)

All

Perform

Refer to: Section B - Main PC Board

Back Relay Test

4th







noitcnuFsutatSmelborP

Go To Table Of Contents

Go To Page:

Back Up Back drifts down.

Back Down Back drifts down.

Run back section up, then unplug power cord.

If drifting stops, perform
If drifting continues, check Back Actuator.

Footswitch Test

.

1st







Troubleshooting

Refer To: Page

Foot Control ................................. B-6

Base / Back Actuator .................. B-11

Wiring Diagrams .......................... D-1

Exploded Views / Part Numbers .. E-1

Models:

Serial Numbers:

Perform

Refer to: Section B - Foot Control

Footswitch Test

223 (all)

All

623 (all)

All







MA629300i

Back Actuator

To isolate the malfunction,
Refer to: Section B - Base / Back Actuator







Back Up / Down

© Midmark Corporation 2003 SF-1838

Power

A-19

Troubleshooting

Go To Table Of Contents

Go To Page:

Refer To: Page

Main PC Board Replacement ....... B-22

Wiring Diagrams ............................ D-1

Exploded Views / Part Numbers ....E-1

noitcnuFsutatSmelborP

Back Up Press Back UP pedal,

back section moves DOWN.

Back Down Press Back DOWN pedal,

back section moves UP.

A-20

© Midmark Corporation 2003 SF-1838

Wire connections

(Check Foot Control & Base Actuator motor connections)

Back Up / Down

Power

(reversed?)

Models:

Serial Numbers:

1st







223 (all)

All

MA629400i

Replace Main PC Board

Refer to: Section B - Main PC Board

623 (all)

All

2nd







noitcnuFsutatSmelborP

Go To Table Of Contents

Go To Page:

Back Up Noisy / grinding / squeaking

Back Down Noisy / grinding / squeaking

Troubleshooting

Refer To: Page

Back Actuator Replacement ....... B-15

Wiring Diagrams .......................... D-1

Exploded Views / Part Numbers .. E-1

Clean and lubricate back actuator threads.

Recommended lubricant: Lithium grease

[NOTE: Unscrew the shaft cover to access actuator threads.

]

1st







Models:

Serial Numbers:

223 (all)

All

623 (all)

All

MA629500i

3rd

Replace Back Actuator

Refer to: Section B - Base / Back Actuator







Back Up / Down

Power

© Midmark Corporation 2003 SF-1838

A-21

Troubleshooting

Go To Table Of Contents

Go To Page:

Refer To: Page

Wiring Diagrams .......................... D-1

Exploded Views / Part Numbers .. E-1

Did patient exceed 400 lb. weight limit?

Inform staff that max. patient weight is 400 lbs.

1st







noitcnuFsutatSmelborP

Back Up Moves slowly

Back Down Moves slowly

2nd





Low voltage to table

Required voltage:

115 VAC models ............... 115

230 VAC models .............. 230

+10% VAC

+10% VAC



A-22

© Midmark Corporation 2003 SF-1838

Back Up / Down

Power

Models:

Serial Numbers:

223 (all)

All

MA627200i

623 (all)

All

Drawer Heater System (optional)

Go To Table Of Contents

Go To Page:

This illustration shows only the components that affect the drawer heater system.

A detailed description of current flow during this function also appears below.

Drawer Heater Operation

115 VAC is supplied directly to the Drawer Heater
switch thru two fuses on the Distribution Board.

[Voltage bypasses the Main PC Board].

When the drawer heater switch is turned ON,
current flows to the heater plate. When the heater
plate is energized, it warms the contents of the
drawer.

NOTE:

Line voltage (230 VAC) is supplied thru
two fuses
a transformer that reduces the line
voltage to 115 VAC before it reaches
the Distribution Board.

230 VAC models only

(located by the IEC inlet)

to

115 VAC

Troubleshooting

Troubleshooting

[Drawer Heater System]

Problem Page

Drawer Heater Does Not Warm Up:

Switch Does Not Illuminate

Switch Illuminates...........................

Drawer Heater Works Properly:

Switch Does Not Illuminate.............

Distribution Board Fuses

[Drawer Heater only]

............ A-24

A-25

A-26

Models:

Serial Numbers:

Heater Plate

222

(-003 /-004 /-007 /-008 /-010 /-016)

All

(-003 /-004 /-007 /-008 /-010 /-016)

223

All

115 VAC

622

(-002 /-004 /-006-008)

All

115 VAC

Heater Switch

MA629000i

623

(-002 /-004 /-008 / -010)

All

Drawer Heater System

A-23

© Midmark Corporation 2003 SF-1838

Troubleshooting

Go To Table Of Contents

Go To Page:

noitcnuFsutatSmelborP

Drawer Heater Does not heat up.

Refer To: Page

Fuses ........................................... B-2

Drawer Heater System ............... B-23

Wiring Diagrams .......................... D-1

Exploded Views / Part Numbers .. E-1

Loose Wire Connections

(between heater switch and power cord)

1st







Heater Switch Does

2nd





Distribution Board Fuses

Refer to: Section B - Fuses



not illuminate

Drawer Heater System

A-24

© Midmark Corporation 2003 SF-1838

3rd





Perform

Heater Switch Test

Refer to: Section B - Drawer Heater System

Drawer

Models:

Serial Numbers:



MA628800i

222

(-003 /-004 /-007 /-008 /-010 /-016)

All

(-003 /-004 /-007 /-008 /-010 /-016)

223

All

(-002 /-004 /-006-008)

622

All

(-002 /-004 /-008 / -010)

623

All

noitcnuFsutatSmelborP

Go To Table Of Contents

Go To Page:

Drawer Heater Does not heat up.

Heater Switch OK

Loose Wire Connections

(between heater switch and heater plate)

(Illuminates)

1st







Troubleshooting

Refer To: Page

Fuses ........................................... B-2

Drawer Heater System ............... B-23

Wiring Diagrams .......................... D-1

Exploded Views / Part Numbers .. E-1

Models:

Serial Numbers:

(-003 /-004 /-007 /-008 /-010 /-016)

222

All

Perform

Heater Plate Test

Refer to: Section B - Drawer Heater System

223

(-003 /-004 /-007 /-008 /-010 /-016)

All

Drawer

MA628900i

622

(-002 /-004 /-006-008)

All

2nd







(-002 /-004 /-008 / -010)

623

All

Drawer Heater System

A-25

© Midmark Corporation 2003 SF-1838

Troubleshooting

Go To Table Of Contents

Go To Page:

Refer To: Page

Drawer Heater System ............... B-23

Wiring Diagrams .......................... D-1

Exploded Views / Part Numbers .. E-1

noitcnuFsutatSmelborP

Drawer Heater OK

Heater Switch Does

not illuminate

Replace Drawer Heater Switch

Refer to: Section B - Drawer Heater System

Drawer Heater System

A-26

© Midmark Corporation 2003 SF-1838

2nd







Models:

Serial Numbers:

MA628800i

222

(-003 /-004 /-007 /-008 /-010 /-016)

All

(-003 /-004 /-007 /-008 /-010 /-016)

223

All

(-002 /-004 /-006-008)

622

All

(-002 /-004 /-008 / -010)

623

All

Table Receptacle (optional)

Go To Table Of Contents

Go To Page:

This illustration shows only the components that affect the table receptacle.

A detailed description of current flow also appears below.

Table Receptacle

115 VAC is supplied directly to the table
receptacle thru the circuit breaker(s)*.

[Voltage bypasses the Main PC Board].

NOTE:

There is a connection point for the receptacle
wiring harness at the distribution board.
Current does not flow thru the distribution board fuses.

Models w/drawer heater only

Toggle style

(Tripped = no power)

Push-Button style

(Tripped = no power)

Troubleshooting

Troubleshooting

[Table Receptacle]

Problem Page

No Power At Receptacle ...................

A-28

Circuit Breakers (2)

222/223

(-015 & -016)

622/623

(-007 & -008)

5
A
M
P

5
A
M
P

(Reset = power)

(Reset = power)

Circuit Breaker (1)*

(*Canadian models do not have a circuit breaker)

222/223

(-002 /-004 /-006 /-008)

(-011 thru -014)

622/623

(-001 /-002 /-005 /-006)

MA603405i

Models:

Serial Numbers:

Models:

Serial Numbers:

(-002 /-004 /-006 /-008)

222

(-011 thru -016)

All

(-002 /-004 /-006 /-008)

223

(-011 thru -016)

All

622

(-001 /-002)

(-005 thru -008)

All

623

(-001 /-002)

(-005 thru -008)

All

Table Receptacle

© Midmark Corporation 2003 SF-1838

Rev. 4/06

A-27

Troubleshooting

Go To Table Of Contents

Go To Page:

Refer To: Page

Wiring Diagrams .......................... D-1

Exploded Views / Part Numbers .. E-1

Is circuit breaker tripped?

[Lift seat section to access circuit breaker(s) - press to reset]

Toggle style

(Tripped = no power)

(Reset = power)

1st







noitcnuFsutatSmelborP

Table Receptacle No power.

All other functions OK

5
A
M
P

5
A
M
P

A-28

© Midmark Corporation 2003 SF-1838

Table Receptacle

Replace receptacle

Models:

Serial Numbers:

Models:

Serial Numbers:

(-002 /-004 /-006 /-008)

3rd

222

(-011 thru -016)

All







Loose wire connections

(between table receptacle and power cord)

MA630601i

223

(-002 /-004 /-006 /-008)

(-011 thru -016)

All

622

(-001 /-002)

(-005 thru -008)

All

2nd







623

(-001 /-002)

(-005 thru -008)

All

Auto Return Function

Go To Table Of Contents

Go To Page:

This illustration shows only the components that affect the Auto Return function.

Refer to the following page for a detailed description of current flow during this function.

Primary Fuses

[All Functions]

115 VAC

Base Motor Fuse

[Base Up & Down Functions]

48 VDC

Troubleshooting

Troubleshooting

[Auto Return Function]

Problem Page

Auto Return Function Does Not Work /

Base Down Function:

Malfunctioning ..................................

Works Properly...............................

A-2

A-31

Transformer Fuse

[All Functions]

Auto Return
Stop Switch

Models:

Serial Numbers:

Auto Return
Start Switch

623

14 VAC

(all)

All

Foot

Control

MA627800i

Auto Return

Limit Switches

[Auto Return function will not operate

if any of these limit switches are tripped]

Base Down

Limit Switch

Base Actuator

Auto Return

Function

© Midmark Corporation 2003 SF-1838

A-29

Troubleshooting

Go To Table Of Contents

Auto Return Function

Power To Foot Control

115 VAC is supplied thru the two primary fuses

(F1 & F2)
[F4 fuse protects the transformer]

The transformer reduces the line voltage and
supplies 14 VAC to the foot control.

to the transformer on the PC board.

.

Auto Return Operation

NOTE

If either of the Auto Return limit switches or
the Base Down limit switch are tripped (open),
the Auto Return function will not operate.

When the Auto Return Switch is depressed
(closed), current
switch, to the PC Board.

(14 VAC)

flows thru the

NOTE

The Base Up / Down relay, located on the PC
Board, has four contacts (DPDT):

(2) Normally Open: Base Up function

(2) Normally Closed: Base Down function

Auto Return

A-30

© Midmark Corporation 2003 SF-1838

Function

When this voltage is applied, current
to the actuator motor thru the (2) Normally Closed
contacts of the Base Up / Down relay.

[The relay does not energize].

When voltage flows to the actuator thru the Normally
Closed contacts of the relay, the actuator motor runs
lowering the table.

Actuator Motor runs until:

1. Stop button is depressed.

2. Auto Return limit switch(es) is tripped.

3. 18 second software time limit is reached.

4. Base Down limit switch is tripped.

5. Fuse(s) opens (blows).

Models:

Serial Numbers:

(48 VDC)

[Primary, Base Motor, Transformer fuse]

623

(all)

All

flows

noitcnuFsutatSmelborP

Go To Table Of Contents

Go To Page:

Auto Return No movement

Base Down OK

Loose Wire Connections

(esp. Foot Control, Auto Return Limit Switches)

1st







Troubleshooting

Refer To: Page

Limit Switches.............................. B-4

Foot Control ................................. B-6

Wiring Diagrams .......................... D-1

Exploded Views / Part Numbers .. E-1

Perform

Test Auto Return Start & Stop switches
Refer to: Section B - Foot Control

Models:

Serial Numbers:

Footswitch Test

623

(all)

All

3rd







MA630701i

Auto Return Limit Switches

Perform

Refer to: Section B - Limit Switches

Limit Switch Test.

© Midmark Corporation 2003 SF-1838

2nd







Auto Return

Function

A-31

Troubleshooting

Go To Table Of Contents

Go To Page:

Upholstery Heater System (optional)

This illustration shows only the components that affect the Upholstery Heater System.

A detailed description of current flow during this function also appears below.

Upholstery Heater Operation

115 VAC is supplied thru the IEC inlet
to the Distribution PC board and then to
the Upholstery Heater PC board at J2 & J3.
Fuses F1 and F2 protect the circuit.

Circuitry on PC board converts 115 VAC to 12 VAC.

Troubleshooting

[Upholstery Heater System]

Problem Page

Heater Does Not Warm Up:

Switch Does Not Illuminate

Switch Illuminates ............................

Heater Works Properly:

Switch Does Not Illuminate ..............

............. A-33

A-34

A-35

Depressing and releasing the momentary
On/ Off Switch supplies approximately
12 VAC to the Upholstery Heater.
A timer on the PC board

On/ Off Switch is depressed)

activated for an 8 hour period unless the Switch
is depressed Off.

(Temperature knob not present on later models)

The upholstery heater temperature can be
regulated by the operator. Turning the
temperature knob will increase or decrease the
voltage to the heater. The temperature can be
varied to a maximum of 105O F (41O C).

A thermostat, located in Back Heating Pad,
opens at 131O F (55OC) +/- 10% removing
power from both Back and Seat heating
elements.

Upholstery Heater runs until:

1. Stop button is depressed.

2. 8 hour time limit is reached.

3. Fuse(s) on Upholstery Heater PCB
opens (blows).

(initiated when the

keeps the heater

Back

Upholstery

Heater

12 VAC

On/Off
Switch

Temperature

Control Knob

(Early models only)

Seat

12 VAC

Upholstery

Heater PCB

Upholstery

Heater

PCB

Fuses

F1

F2

Distribution

Board

115 VAC

Upholstery Heater

A-32

© Midmark Corporation 2003 SF-1838

Rev. 2/11

Models:

Serial Numbers:

(-002 /-004 /-006-008)

622

All

MA629600i

623

(-002 /-004 /-008 / -010)

All

noitcnuFsutatSmelborP

Go To Table Of Contents

Go To Page:

Upholstery Heater Does not heat up.

Heater Switch Does

Loose Wire Connections

Distribution Board to Upholstery PCB,
Upholstery PCB to Heater Switch.

not illuminate

1st







Upholstery PCB Fuse(s)

Test Uph. PC Board fuses.
Refer to: Section B - Fuses

Troubleshooting

Refer To: Page

Fuses ........................................... B-2

Uph. Heater PC Board Test ........ B-29

Uph. Heater Switch Test ............. B-33

Wiring Diagrams .......................... D-1

Exploded Views / Part Numbers .. E-1

2nd







Perform

Refer to: Section B - Upholstery Heater System

Models:

Serial Numbers:

Uph. Heater Switch Test

(-002 /-004 /-006-008)

622

(-002 /-004 /-008 / -010)

All

3rd







623

All

Perform

Refer to: Section B - Upholstery Heater System

MA629900i

Uph. Heater PC Board Test

4th







Upholstery Heater

© Midmark Corporation 2003 SF-1838

A-33

Troubleshooting

Go To Table Of Contents

Go To Page:

Refer To: Page

Fuses ........................................... B-2

Uph. Heater PC Board Test ........ B-29

Uph. Heater Test ........................ B-32

Uph. Heater Switch Test ............. B-33

Wiring Diagrams .......................... D-1

Exploded Views / Part Numbers .. E-1

3rd

Perform

Refer to: Section B - Upholstery Heater System

Uph. Heater Test







noitcnuFsutatSmelborP

Upholstery Heater Does not heat up.

Heater Switch Illuminates.

Perform

Refer to: Section B - Upholstery Heater System

Upholstery Heater

A-34

© Midmark Corporation 2003 SF-1838

Uph. Heater Switch Test

Perform

Refer to: Section B - Upholstery Heater System

Uph. Heater PC Board Test

Serial Numbers:

2nd







Models:

4th

622

(-002 /-004 /-006-008)

All







MA629900i

(-002 /-004 /-008 / -010)

623

All

Loose Wire Connections

Upholstery PCB to heater,
Back and Seat heater connection.
Upholstery PCB to heater switch.

1st







noitcnuFsutatSmelborP

Go To Table Of Contents

Go To Page:

Upholstery Heater OK

Heater Switch Does not illuminate

Troubleshooting

Refer To: Page

Upholstery Heater Switch

Replacement .......................... B-25

Wiring Diagrams .......................... D-1

Exploded Views / Part Numbers .. E-1

Replace Uph. Heater Switch

Refer to: Section B - Upholstery Heater System

Models:

Serial Numbers:

622

(-002 /-004 /-006-008)

All

1st







(-002 /-004 /-008 / -010)

623

All

MA629900i

Upholstery Heater

A-35

© Midmark Corporation 2003 SF-1838

Troubleshooting

Go To Table Of Contents

A-36

© Midmark Corporation 2003 SF-1838

Models:

Serial Numbers:

Component Testing & Repair

Go To Table Of Contents

Click on the Go To Page button and enter the desired

page number. (Note: Letters are case sensitve. ex. B-2)

Go To Page:

Component
Testing & Repair

Components Page

Fuses ............................................... B-2

Limit Switches ...................................... B-4

Foot / Hand Control .............................. B-6

Base Actuator ....................................... B-11

Back Actuator

Back Release Mechanism

Main PC Board ..................................... B-19

Drawer Heater System ......................... B-23

Upholstery Heater System .................... B-29

(power) ..........................

(manual) .....

B-11

B-17

Section B

Models:

Serial Numbers:

© Midmark Corporation 2003 SF-1838

B-1

Component Testing & Repair

Go To Table Of Contents

Go To Page:

Fuses

Location

Distribution Board

(Early models w/drawer heater)

Fuses Page

Location ............................................... B-2

Fuse Test ............................................. B-3

Access Procedures .............................. C-1

Wiring Diagrams ................................... D-1

Fuse Ratings & Part Numbers .............. E-24

Upholstery Heater PC Board

B-2

© Midmark Corporation 2003 SF-1838

Fuses

Distribution Board

(Later models w/drawer heater)

Models:

Serial Numbers:

Power Cord Inlet

(230V & Canadian models only)

Main PC Board

MA627400i

All

All

Component Testing & Repair

Go To Table Of Contents

Fuses

Fuse Test

- continued

Fuse Test

Step 1: Set meter to 200

Ω.Ω.

Ω.

Ω.Ω.

Fuse Test

Step 2: Place meter probes

on each end of fuse.

Models:

Serial Numbers:

All

All

gndaeRreteMsutatSnoitcAderiuqeR

OL

Any

resistance Fuse is good.

reading

© Midmark Corporation 2003 SF-1838

Replace fuse.

Fuses

B-3

Component Testing & Repair

Go To Table Of Contents

Go To Page:

Limit Switches

Location

Limit Switches Page

Location ............................................... B-4

Limit Switch Test .................................. B-5

Access Procedures .............................. C-1

Wiring Diagrams ................................... D-1

Part Number

(all) ....................

015-1055-00

Attention!

All limit switches are the same.
They can be "traded" to troubleshoot.

Base Down Limit Switch

Affected Functions: Base DOWN

Auto Return (623 only)

623 only

Auto Return Limit Switches (2)

Affected Function: Auto Return

Back Up Limit Switch

Affected Function: Back UP

MA627600i

Base Up Limit Switch

Affected Function: Base UP

Back Down Limit Switch

Affected Function: Back DOWN

223 / 623 only

223 / 623 only

B-4

© Midmark Corporation 2003 SF-1838

Limit Switches

Models:

Serial Numbers:

All

All

Component Testing & Repair

Go To Table Of Contents

Limit Switches

- continued

Limit Switch Test

Attention!

All limit switches are the same.
They can be "traded" to troubleshoot.

Limit Switch Test

Step 1: Remove limit switch.

Disconnect wires.

MA627700i

Limit SwitchTest

Step 2: Set meter to 200

Limit Switch Test

Step 3: Place meter probes on

Note: Check switch 'tripped' and 'untripped'.

Ω.Ω.

Ω.

Ω.Ω.

COM and NC

terminals.

With switch 'tripped'...

Models:

Serial Numbers:

gndaeRreteMsutatSnoitcAderiuqeR

OL

less than or = to Replace switch

5 ohms

Switch is good.
Perform next check.

All

All

With switch 'untripped'...

gndaeRreteMsutatSnoitcAderiuqeR

OL

Any

resistance Switch is good.

reading Perform next check.

Replace switch

Limit Switches

© Midmark Corporation 2003 SF-1838

B-5

Component Testing & Repair

Go To Table Of Contents

Go To Page:

Foot / Hand Control

Foot Switch Test - 222 / 622

Foot SwitchTest

Step 1: Remove foot control switch.

Note: Refer to Foot Switch Replacement 222 / 622.

Foot Switch Test

Step 2: Set meter to

Ω.Ω.

Ω.

Ω.Ω.

Foot Switch Test

Step 3: Place meter probes on

COM and NO

terminals.

Foot / Hand Control Page

Foot Switch Test

Foot / Hand Control Test

Foot Switch Replacement:

222 / 622 ...........................................

223 / 623 (old style foot control) ........

Switch Membrane Replacement:

223 / 623 (new style foot control).......

623 Hand Control ..............................

Wiring Diagrams ................................... D-1

Exploded View / Part Numbers:

Foot Contol - 222 / 622 ......................

Foot Control - 223 .............................

Foot Control - 623 .............................

Hand Control - 623 ............................

* multiple pages due to model / serial # break

- 222 / 622 .................

- 223 / 623 ....

B-6

B-7

B-8

B-9

B-10

B-10

E-26

E-27*

E-28*

E-29

With switch 'tripped'...

less than or = to Switch is good.

5 ohms Perform next check.

OL

Foot / Hand Control

B-6

© Midmark Corporation 2003 SF-1838

gndaeRreteMsutatSnoitcAderiuqeR

Replace switch

Models:

Serial Numbers:

222 (all)

All

Note: Check switch

'tripped' and 'untripped'.

With switch 'untripped'...

Any

reading

OL

622 (all)

gndaeRreteMsutatSnoitcAderiuqeR

resistance Replace switch.

Switch is good.
Perform next check.

All

Component Testing & Repair

Go To Table Of Contents

Foot / Hand Control

Foot / Hand Control Test

- continued

- 223 / 623

Foot / Hand Control Test

Step 1: Disconect wire harness from J8* on main PC board

* Note: Model 623 only: If the foot or hand control to be tested

is plugged into the inlet at the head end of the table,
disconnect harness from J7 on main PC board.

J8

Foot / Hand Control Test

Step 2: Set meter to

Ω.Ω.

Ω.

Ω.Ω.

..

.

..

With switch 'untripped'...

gndaeRreteMsutatSnoitcAderiuqeR

Any

resistance Replace switch /

reading switch membrane.

Switch is good.
Perform next check.

(Base Down)

Red

(com.)

Black

OL

With switch 'tripped'...

gndaeRreteMsutatSnoitcAderiuqeR

Foot / Hand Control Test

Step 3: Place one meter probe on black wire

(common)

Place other meter probe on the wire that
corresponds to the switch to be tested:

Switch Wire Color

Base Up .......... white

Base Down ...... red

Back Up ........... green

Back Down ...... orange

Auto Return ..... blue

Stop ................. brown

Models:

Serial Numbers:

of foot / hand control harness.

223 (all)

All

623 (all)

All

Probe position to test:

Base Down switch

MA727300i

less than or = to Switch is good.

5 ohms Perform next check.

OL

Foot / Hand Control

© Midmark Corporation 2003 SF-1838

Replace switch /
switch membrane.

B-7

Component Testing & Repair

Go To Table Of Contents

Foot / Hand Control

- continued

Foot Switch Replacement - 222 / 622

Removal

Step 1: Remove cover.

Installation

Step 2: Install cover

.

Removal

Step 2: Remove switch.

Disconnect wires.

Foot / Hand Control

B-8

© Midmark Corporation 2003 SF-1838

Models:

Serial Numbers:

222 (all)

All

MA628300i

622 (all)

All

Installation

Step 1: Install switch.

Connect wires.

Note: Be sure insulating

material is in place.

Component Testing & Repair

Go To Table Of Contents

Foot / Hand Control

- continued

Foot Switch Replacement - 223 / 623*

* Old-style Foot Control

Installation

Step 3: Connect coil cord & pedal switch

wire harness to PC board.

Removal

Step 3: Disconnect coil cord & pedal

switch wire harness from PC board.

Installation

Step 2: Insert switch wires into connector

Connect wire harness to PC board.

Removal

Step 4: Disconnect proper wire harness from PC board.

Press tabs, then disconnect faulty switch wires.

Tab

.

Removal

Step 1: Disconnect coil cord from table.

Remove strain relief clamp.

Installation

Step 5: Install strain relief clamp.

Connect coil cord to table.

Models:

Serial Numbers:

Removal

Step 2: Remove four screws.

Installation

Step 4: Install top section.

223 (-001 thru -014)

SC1000 thru present SD1000 thru present
SE1000 thru present SF1000 thru present
V2200 thru V3302

Separate top section.

623 (-001 thru -006)

SL1000 thru present SM1000 thru present
V2200 thru V3302

Installation

Step 1: Install switch

Removal

Step 5: Remove faulty switch.

Foot / Hand Control

© Midmark Corporation 2003 SF-1838

.

B-9

Component Testing & Repair

Go To Table Of Contents

Foot / Hand Control

- continued

Switch Membrane Replacement - 223 / 623*

* New-style Foot Control

Installation

Step 1: Install touch pad onto switch panel.

Removal

Step 3: Peel touch pad off of switch panel.

Installation

Step 2: Insert control cord thru hole in base.

Connect to membrane connector.

Note: Slide strain relief block (on cord) into slot on base.

Hand Control - 623 only

Removal

Step 1: Remove base plate.

Installation

Step 3: Install base plate.

Foot / Hand Control

B-10

© Midmark Corporation 2003 SF-1838

Removal

Step 2: Disconnect control cord

MA727600i

Models:

Serial Numbers:

from membrane connector.

223 (all)

V3303 thru present

623 (all)

V3303 thru present

Base / Back Actuator

Go To Table Of Contents

Go To Page:

This illustration shows the three seviceable components of the actuator.
Use the table below to isolate the malfunctioning part.

melborPnoitcAderiuqeR

Motor runs, but makes grinding noise. Clean Ball Screw threads.

Replace Ball Screw Assy.

Motor runs, but table does not move. Inspect / replace

Motor Coupler.

-or

Component Testing & Repair

Base / Back Actuator Page

Actuator Motor Test ............................. B-12

Replacement:

Base Actuator ...................................

Back Actuator (223 / 623) ..................

Wiring Diagrams ................................... D-1

Exploded View / Part Numbers:

Back Actuator (223 / 623) ..................

Base Actuator....................................

B-13

B-15

E-12

E-21

Motor does not run. Perform

Actuator Motor Test

Actuator Motor

Ball Screw Assembly

MA628200i

Motor Coupler

Models:

Serial Numbers:

All

All

Base / Back Actuator

© Midmark Corporation 2003 SF-1838

B-11

Component Testing & Repair

Go To Table Of Contents

Base / Back Actuator

Actuator Motor Test

Actuator Motor Test

Step 2: Set meter to 200

- continued







Caution

Unplug power cord before
removing PC Board cover.

Actuator Motor Test

Step 1: Disconnect actuator wires from PC Board.

[Base Actuator: J2 & J3]
[Back Actuator: J4 & J5

Note: Refer to next page to access PC Board.

(223 / 623 only)

]

Base / Back Actuator

B-12

© Midmark Corporation 2003 SF-1838

Rev. 7/10/12

Models:

Serial Numbers:

Actuator Motor Test

Step 3: Place meter probes on actuator wires.

gndaeRreteMsutatSnoitcAderiuqeR

2- 3

0

All

All













Motor is good.
Perform next check.

Replace motor.

MA628000i

15 In

38.1 cm

Base Actuator

Go To Table Of Contents

Go To Page:

Replacement

Component Testing & Repair

Access Procedures Page

Table Shrouds

Removal / Installation ........................ C-2

Manually Raising / Lowering Table ....... C-5

Removal

(see Access Procedures)

Step 1: Remove table shrouds.

Installation

(see Access Procedures)

Step 7: Replace table shrouds.

Removal

Step 2: Position table so that bottom of

upperwrap is approx. 15 in. from floor.

Note: If necessary, manually raise / lower table.

(see Access Procedures)

Caution

Unplug power cord before
removing PC Board cover.

Removal

Step 3: Remove PC Board cover.

Installation

Step 6: Replace PC Board cover.

Removal

Step 4: Cut cable ties.

Installation

Step 4: Connect base actuator motor wires.

Note: Clamp must be installed over

stripped portion of actuator wire.

Removal

Step 5: Disconnect base

actuator motor wires.

Models:

Serial Numbers:

All

All

Installation

Step 5: Replace cable ties.

Base / Back Actuator

© Midmark Corporation 2003 SF-1838

Rev. 7/10/12

B-13

Component Testing & Repair

MA628100i

Go To Table Of Contents

Base Actuator

Replacement

- continued

- continued

Caution

Use an assistant when laying / lifting table.
Remove all accessories (chair arms, storage pod, etc.)

Removal

Step 6: Lay table down on LH side.

Installation

Step 3: Carefully lift table upright.

Newer Models

Removal

Step 8: Remove two nuts / hex bolts.

Newer models:
Older models:

Remove actuator. Unscrew retaining plate.

Remove U-plate.

Unscrew actuator block from mounting block.

Installation (Newer Models)

Step 1: Thread retaining plate onto actuator block.

Retaining
Plate

Mounting Block

Insert actuator thru mounting block.
Secure retaining plate to mounting block.

Older Models

U-Plate

Base / Back Actuator

B-14

© Midmark Corporation 2003 SF-1838

Removal

Step 7: Remove clevis pin.

Pull base out to its full extension.
Pivot actuator toward head end.

Installation

Step 2: Pivot actuator toward foot end.

Push base together.
Install clevis pin & clip ring.

Models:

Serial Numbers:

Rev. 7/10/12

Actuator Block

Installation (Older Models)

Step 1: Thread actuator block 1/2 way down shaft.

Thread actuator block into mounting block.
Install U-plate.

All

All

Back Actuator

Go To Table Of Contents

Go To Page:

Replacement

Component Testing & Repair

Access Procedures Page

Table Shrouds

Removal / Installation ........................ C-2

Removal

(see Access Procedures)

Step 1: Remove outer shrouds.

Note: The inner and middle shrouds will drop

down. It is not necessary to remove them.

Installation

Step 8: Replace shrouds.

Removal

Step 4: Cut all cable ties.

Installation

Step 6: Replace all cable ties.

Caution

Unplug power cord before
removing PC Board cover.

Removal

Step 2: Remove PC Board cover.

Installation

Step 7: Replace PC Board cover.

Removal

Step 3: Disconnect back

actuator motor wires.

Models:

Serial Numbers:

223 (all)

All

623 (all)

All

Installation

Step 5: Connect back

actuator motor wires.

Base / Back Actuator

© Midmark Corporation 2003 SF-1838

MA633000i

Rev. 7/10/12

B-15

Component Testing & Repair

Go To Table Of Contents

Back Actuator

Replacement

- continued

- continued

Mounting bracket style may vary.
The procedure is similar.

Removal

Step 6: Remove top clevis pin.

Installation

Step 3: Install top clevis pin.

Removal

Step 8: Remove bottom clevis pin.

Remove actuator.

Installation

Step 1: Route motor wires.

Install bottom clevis pin.

Base / Back Actuator

B-16

© Midmark Corporation 2003 SF-1838

Installation

Step 4: Secure top cover with four screws.

Models:

Serial Numbers:

Removal

Step 5: Remove four screws

securing top cover.

223 (all)

All

623 (all)

All

Removal

Step 7: Remove top cover.

Installation

Step 2: Slide top cover over actuator.

MA633901i

MA611901i

Back Release Mechanism

Go To Table Of Contents

Go To Page:

Back Release Handle Adjustment

Handle Adjustment

Step 1: Raise back section.

Note: If back section will not move, lift seat

section then remove clevis pin from bottom
of gas cylinder.

Component Testing & Repair

Handle Adjustment

Step 3: Rotate cam until cylinder releases.

Rotate cam back until cylinder locks in place.
Hold cam in place.

Back Release Mechanism Page

Back Release Handle Adjustment ........ B-17

Gas Cylinder

Replacement & Adjustment ............... B-18

Exploded View / Part Numbers ............. E-10*

* multiple pages due to model / serial # break

Handle Adjustment

Step 4: Pivot handles down until

they contact back section.

Note: Cam should not move.

Models:

Serial Numbers:

222 (all)

All

622 (all)

All

Handle Adjustment

Step 2: Loosen two set screws.

Handle Adjustment

Step 5: Tighten two set screws.

Back Release

Mechanism

© Midmark Corporation 2003 SF-1838

B-17

Component Testing & Repair

Go To Table Of Contents

Back Release Mechanism

- continued

Gas Cylinder Replacement & Adjustment

Removal

Step 1: Lower back section all the way down.

Installation

Step 2: Hold cylinder shaft.

Extend shaft 2-3 in.

(Squeeze release handle gently)

Removal

Step 2: Remove clevis pin.

Note:

If clevis pin is inaccessible,
refer to:

Top Cover Removal

below.

Installation

Step 3: Install clevis pin.

Perform

Adjustment

Adjustment

Step 2: Tighten jam nut.

Adjustment

Step 1: Screw cylinder in/out one turn.

Check for proper operation.
Repeat as necessary.

Note: If cylinder drifts, screw OUT.

If cylinder does not release, screw IN.

.

Removal

Step 3: Loosen jam nut.

Unscrew cylinder.

Back Release

B-18

© Midmark Corporation 2003 SF-1838

Mechanism

Top Cover Removal

Step 1: Lower table shrouds.

Remove four screws.
Raise top cover to access clevis pin.

Models:

Serial Numbers:

(Refer to Section C)

222 (all)

All

Installation

Step 1: Screw cylinder in until

3-4 threads are exposed.

MA607602i

622 (all)

All

Main PC Board

Go To Table Of Contents

Go To Page:

This illustration shows the location of the fuses on the Main PC Board.
Use the table below to determine the required action.

melborPnoitcAderiuqeR

Base actuator motor does not run. Check fuses

Perform

Back actuator motor does not run. Check fuses

Perform

(F1& F2, F3, F4)

Base Relay Test

(F1& F2, F3, F5)

Back Relay Test

.

.

Component Testing & Repair

Main PC Board Page

Base Relay Test ................................. B-20

Back Relay Test ................................. B-21

Replacement ...................................... B-22

Wiring Diagrams ................................. D-1

Part Numbers

222 / 622 ......................................... E-22*

223 / 623 ......................................... E-23

* multiple pages due to model / serial # break

Base Relay

• 222 / 622 ......... single function / one relay

Fuses:

F1 & F2 ........ Primary Fuses

F3 ................. Base Motor Fuse

F4 ................. Transformer Fuse

(affect all functions)

(affects Base Up / Down)
(affects all functions)

• 223 / 623 ......... dual function / two relays

Fuses:

F1 & F2 ........ Primary Fuses

F3 ................. Base Motor Fuse

F4 ................. Transformer Fuse

F5 ................. Back Motor Fuse

(affect all functions)

(affects Base Up / Down)
(affects all functions)

(affects Back Up / Down)

(Base Relay)

(Base Relay & Back Relay)

222 / 622

Base Relay

Back Relay

(223 & 623 only)

(223 & 623 only)

223 / 623

MA628600i

Models:

Serial Numbers:

All

All

Main PC Board

© Midmark Corporation 2003 SF-1838

B-19

Component Testing & Repair

Go To Table Of Contents

Main PC Board

Base Relay Test

- continued

Base Relay Test

Step 1: Set meter to VDC.

Note: Wires must remain connected

to PC Board to perform this test.

Base Relay Test

Step 2: Clip meter test hooks on

terminals at J2 and J3.

Base Relay Test

Step 3: Activate Base Up / Down function

using the foot or hand control.

Main PC Board

B-20

© Midmark Corporation 2003 SF-1838

Rev. 4/11

Models:

Serial Numbers:

All

All

J3

J2

MA718400i

gndaeRreteMsutatSnoitcAderiuqeR

approx.

48 VDC

0 VDC

PC Board is good.
Perform next check.

Replace PC Board.

Component Testing & Repair

Go To Table Of Contents

Main PC Board

Back Relay Test

- continued

Back Relay Test

Step 1: Set meter to VDC.

Note: Wires must remain connected

to PC Board to perform this test.

Base Relay Test

Step 2: Clip meter test hooks on

terminals at J4 and J5.

Back Relay Test

Step 3: Activate Back Up / Down function

using the foot or hand control.

Models:

Serial Numbers:

223 (all)

All

623 (all)

All

J5

J4

MA718500i

gndaeRreteMsutatSnoitcAderiuqeR

approx.

48 VDC

0 VDC

PC Board is good.
Perform next check.

Replace PC Board.

Main PC Board

© Midmark Corporation 2003 SF-1838

Rev. 4/11

B-21

Component Testing & Repair

MA631500i

Go To Table Of Contents

Go To Page:

Main PC Board

- continued

Replacement

Removal

(see Access Procedures)

Step 1: Remove outer shrouds.

Note: The inner and middle shrouds will drop

down. It is not necessary to remove them.

Installation

(see Access Procedures)

Step 4: Replace outer shrouds.

Caution

Unplug power cord before
removing PC Board cover.

Removal

Step 2: Remove PC Board cover.

Installation

Step 3: Replace PC Board cover.

Access Procedures Page

Table Shrouds

Removal / Installation ........................ C-2

Manually Raising / Lowering Table ....... C-5

Note: 222 / 622 PC Board is shown.

223 / 623 will have additional wiring.

Removal

Step 3: Disconnect ground wire.

Installation

Step 2: Connect ground wire.

Connect all wiring.

Note: Boards manufactured after 6/05

B-22

will beep for approximately three
seconds when table is first pluged in.

Main PC Board

© Midmark Corporation 2003 SF-1838

Tag and disconnect wiring from PC Board.

Rev. 7/10/12

Models:

Serial Numbers:

All

All

Removal

Step 4: Remove PC Board.

Tip: Push latches back, then lift off

of mounting studs.

Installation

Step 1: Install PC Board.

Drawer Heater System

Go To Table Of Contents

Go To Page:

Use the table below to determine the required action.

[This table applies to all models (222 / 223 / 622 / 623)]

melborPnoitcAderiuqeR

Drawer heater does not warm up. Perform
Heater switch does not illuminate

Drawer heater does not warm up. Perform
Heater switch illuminates.

Drawer heater - OK Replace heater switch.
Heater switch does not illuminate

Heater Switch Test - 222 / 223

Heater Switch Test

Step 2: Set meter to 200 VAC

Heater Switch Test

Heater Plate Test

Component Testing & Repair

Drawer Heater System Page

Distribution Board Fuses ...................... B-2

Heater Switch Test:

222 / 223 ...........................................

622 / 623 ...........................................

Switch Replacement 622 / 623 ............. B-25

Heater Plate Test:

222 / 223 ...........................................

622 / 623

Heater Plate Replacement.................... B-28

Wiring Diagrams ................................... D-1

Part Numbers ....................................... E-30*

* multiple pages due to model / serial # break

..

.

..

.......................................... B-27

B-23

B-24

B-26

Models:

Serial Numbers:

222

All

Heater Switch Test

Step 1: Remove heater switch.

Disconnect two incoming power wires.

Heater Switch Test

Step 3: Place meter probes on incoming power wires.

223

All

approx.

115 VAC

0 VAC

gndaeRreteMsutatSnoitcAderiuqeR

Replace switch.

Switch OK.
Check connections & fuses

Drawer Heater

System

© Midmark Corporation 2003 SF-1838

B-23

Component Testing & Repair

Go To Table Of Contents

Go To Page:

Drawer Heater System

Heater Switch Test - 622 / 623

Caution

Unplug power cord before
removing stirrup guide.

Removal

Step 1: Remove stirrup guide.

Note: If necessary, remove chair arm

brace (see Access Procedures).

Installation

Step 2: Replace stirrup guide.

- continued

Access Procedures Page

Chair Arm Brace Removal .................... C-8

Heater Switch Test

Step 3: Set meter to 200 VAC







Heater Switch Test

Step 4: Place meter probes on two

white leads from switch.

Heater Switch Test

Step 5: Plug in power cord,

then depress switch to ON







Caution

Unplug power cord before
re-connecting electrical
leads.

B-24

© Midmark Corporation 2003 SF-1838

Drawer Heater

System

Rev. 7/10/12

Heater Switch Test

Step 2: Disconnect two white

leads from drawer heater
switch to the drawer heater.

Models:

Serial Numbers:

622

All

MA634800i

623

All

0 VAC

approx.

115 VAC

Installation

Step 1: Re-connect electrical

leads.

gndaeRreteMsutatSnoitcAderiuqeR

Replace switch.

Switch OK.
Check Heater Plate.

Component Testing & Repair

Go To Table Of Contents

Go To Page:

Drawer Heater System

- continued

Heater Switch Replacement - 622 / 623

(This procedure also applies to the upholstery heater switch)

Removal

Step 1: Remove stirrup guide.

Note: If necessary, remove chair arm

brace (see Access Procedures).

Installation

Step 4: Replace stirrup guide.

Access Procedures Page

Chair Arm Brace Removal .................... C-8

Caution

Unplug power cord before
removing stirrup guide.

Removal

Step 2: Tag, then disconnect

wires from faulty
switch.

Installation

Step 3: Connect switch

electrical wires.

Removal

Step 3: Remove switch

housing.

Installation

Step 2: Install switch

housing.

Models:

Serial Numbers:

Removal

Step 4: Remove switch

assembly.

Installation

Step 1: Install switch

assembly.

622

All

623

All

MA636600i

MA636500i

Drawer Heater

System

© Midmark Corporation 2003 SF-1838

Rev. 7/10/12

B-25

Component Testing & Repair

Go To Table Of Contents

Drawer Heater System

Heater Plate Test -222 / 223

- continued

Heater Plate Test

Step 2: Set meter to 2000

(2K)

Ω.Ω.

Ω.

Ω.Ω.

Heater Plate Test

Step 1: Remove heater switch.

Disconnect two heater plate wires (white).

Drawer Heater

B-26

© Midmark Corporation 2003 SF-1838

System

Models:

Serial Numbers:

222

All

Heater Plate Test

Step 3: Place meter probes on heater plate wires.

gndaeRreteMsutatSnoitcAderiuqeR

approx.

ΩΩ

360

Ω

ΩΩ

0

ΩΩ

Ω

ΩΩ

223

All

Heater plate is good.

Replace heater plate.

Component Testing & Repair

Go To Table Of Contents

Go To Page:

Drawer Heater System

Heater Plate Test -622 / 623

Caution

Unplug power cord before
removing stirrup guide.

Removal

Step 1: Remove stirrup guide.

Note: If necessary, remove chair arm

brace (see Access Procedures).

Installation

Step 2: Replace stirrup guide.

- continued

Access Procedures Page

Chair Arm Brace Removal .................... C-8

Heater Plate Test

Step 3: Set meter to 2000



(2K)





Heater Plate Test

Step 4: Place meter probes on

terminals of heater plate
wires.

Models:

Serial Numbers:

622

All

Heater Plate Test

Step 2: Disconnect two white

leads from drawer
heater switch to the
drawer heater.

623

All

MA634900i

approx.

360

0







Installation

Step 1: Re-connect electrical

leads.

gndaeRreteMsutatSnoitcAderiuqeR

Heater plate is good.







Drawer Heater

System

© Midmark Corporation 2003 SF-1838

Perform next check.

Replace heater plate.

Rev. 7/10/12

B-27

Component Testing & Repair

Go To Table Of Contents

Drawer Heater System

Heater Plate Replacement

- continued

Removal

Step 1: Remove screw(s) from drawer slides.

Installation

Step 3: Install screw.

Attention

If there is not a wire connection here, you must
lower table shrouds and remove the top cover in
order to disconnect / route heater plate wires.

Installation

Step 2: Route heater plate wires behind slide.

Connect wires.

Removal

Step 3: Disconnect heater plate wires.

Installation

Step 3: Install drawer.

Removal

Step 2: Push LH slide lever UP and RH lever DOWN.

Remove drawer.

Note: Slide levers are clear plastic.

Drawer Heater

B-28

© Midmark Corporation 2003 SF-1838

System

Serial Numbers:

Models:

Removal

Step 4: Remove heater plate.

Installation

Step 1: Install heater plate.

MA633800i

All

All

MA636200i

Upholstery Heater System

Meter Reading Status Required Action

0 VAC

Check supply voltage to heater PC
board

s/n prior to V857486:

14-15 VAC

s/n V857487 to present:

7-8 VAC

Check upholstery heater.

Go To Table Of Contents

Go To Page:

Component Testing & Repair

Use the table below to determine the required action.

melborPnoitcAderiuqeR

Upholstery heater does not warm up. Perform
Heater switch does not illuminate

Upholstery heater does not warm up. Perform
Heater switch illuminates.

Upholstery heater - OK Replace heater switch.
Heater switch does not illuminate

Upholstery PC

Board Test

Upholstery Heater

Test

Upholstery Heater PC Board Test

(Output Voltage Test)

To Upholstery
Heater

Upholstery Heater System Page

Upholstery Heater PC Board Test:

Output Voltage Test ..........................

Supply Voltage Test ..........................

PC Board Replacement ........................ B-31

Upholstery Heater Test ......................... B-32

Upholstery Heater Switch Test ............. B-33

Wiring Diagrams ................................... D-1

Part Numbers ....................................... E-32

From Heater
PC Board

Output Voltage Test

Step 1: Disconnect leads to

upholstery heater.

B-29

B-30

Output Voltage Test

Step 2: Set meter to 20 VAC.

Output Voltage Test

Step 4: Press Upholstery (Green)

Heater switch ON.

Models:

Serial Numbers:

622

All

623

All

Output Voltage Test

Step 3: Place meter probes on leads

from upholstery heater PC
Board.

Upholstery Heater

System

© Midmark Corporation 2003 SF-1838

Rev. 5/10

B-29

Component Testing & Repair

Go To Table Of Contents

Upholstery Heater System

- continued

Upholstery Heater PC Board Test - continued

(Supply Voltage Test)

Caution

Unplug power cord before
removing stirrup guide.

Supply Voltage Test

Step 1: Remove stirrup guide.

Note:

brace (see Access Procedures).

If necessary, remove chair arm

F2

F1

Upholstery
Heater PCB

J3

J2

J1

Supply Voltage Test

Step 2: Set meter to 200 VAC.

Upholstery Heater

B-30

© Midmark Corporation 2003 SF-1838

System

Rev. 7/10/12

Models:

Serial Numbers:

622

All

MA634901i

623

All

0

VAC

115

Supply Voltage Test

Step 3: Place meter probes on J2 &

J3 of Upholstery Heater PCB
and plug table into outlet.

gndaeRreteMsutatSnoitcAderiuqeR

VAC

Check incoming power
source to table.

Check connections &
F1 / F2 fuses on PCB.

Component Testing & Repair

Go To Table Of Contents

Upholstery Heater System

Upholstery Heater PC Board Replacement

Caution

Unplug power cord before
removing PC Board cover.

Upholstery Heater PC Board Removal

Step 2: Depress release on standoffs and

remove PC Board.

Installation

Step 1: Replace PC Board.

- continued

Upholstery Heater PC Board Removal

Step 1: Tag, then disconnect leads to PC

board.

Installation

Step 2: Re-connect electrical leads.

Models:

Serial Numbers:

622

All

623

All

MA636800i

Upholstery Heater

System

© Midmark Corporation 2003 SF-1838

Rev. 7/10/12

B-31

Component Testing & Repair

MA636300i

Go To Table Of Contents

Upholstery Heater System

Upholstery Heater Test

Upholstery Heater Test

Step 1: Disconnect leads to

- continued

To Upholstery
Heater

From Heater
PC Board

upholstery heater.

Upholstery Heater Test

Step 3: Place meter probes on leads

from upholstery heater.

Upholstery Heater Test

Step 2: Set meter to 200

Upholstery Heater

B-32

© Midmark Corporation 2003 SF-1838

System

ΩΩ

Ω.

ΩΩ

Serial Numbers:

Models:

622

All

623

All

0

3 - 4

gndaeRreteMsutatSnoitcAderiuqeR

ΩΩ

Ω

ΩΩ

ΩΩ

Ω

ΩΩ

Replace Upholstery

Check Upholstery
Heater Switch.

Component Testing & Repair

Go To Table Of Contents

Upholstery Heater System

Upholstery Heater SwitchTest

- continued

Upholstery Heater SwitchTest

Step 3: Depress & hold in the Upholstery

Heater (Green) Switch

Note: For replacement procedures, refer to

Heater Switch Replacement in

Drawer Heater System

Upholstery Heater SwitchTest

Step 1: Set meter to 200

Ω.Ω.

Ω.

Ω.Ω.

Upholstery Heater SwitchTest

Step 2: Disconnect Black leads from Switch

and insert meter probes.

With switch 'tripped'...

gndaeRreteMsutatSnoitcAderiuqeR

Any

resistance Switch is good.

reading Perform next check.

OL

Models:

Serial Numbers:

Replace switch

622

All

623

All

MA634800i

With switch 'untripped'...

gndaeRreteMsutatSnoitcAderiuqeR

Any

resistance Replace switch.

reading

OL

Upholstery Heater

System

© Midmark Corporation 2003 SF-1838

Switch is good.
Perform next check.

B-33

Component Testing & Repair

Go To Table Of Contents

Go To Page:

Click on the Go To Page button and enter the desired

page number. (Note: Letters are case sensitve. ex. C-2)

Access Procedures

Procedure Page

Table Shrouds

Manually Raising / Lowering Table ....... C-5

Upholstered Top

Ritter models .....................................

Midmark models ................................

Chair Arm / Brace Removal .................. C-8

Top Cover

Back Limit Switch Access ..................... C-9

(Remove / Install) .........

(Remove / Install)

(Remove Install) ..................

:

C-2

C-6*

C-7*

C-9

Section C

Models:

Serial Numbers:

© Midmark Corporation 2003 SF-1838

Rev. 3/06

C-1

Component Testing & Repair

MA630800i

Go To Table Of Contents

Go To Page:

Table Shrouds

Removal / Installation

Note

Remove all accessories

(ex. chair arms)

before performing this procedure.

Removal

(Midmark models only)

Step 1: Remove magnetic cladding.

Refer To: Page

Exploded Views / Part Numbers:

Table Shrouds (Ritter models) ...........

Table Shrouds (Midmark models) .....

Removal

Step 2: Remove screw(s) from drawer slides.

Note: Tables w/o drawer heater do not have screws.

Installation

Step 7: Install screw(s) in drawer slides.

E-13*

E-14*

* multiple pages due to model / serial # break

C-2

© Midmark Corporation 2003 SF-1838

Table Shrouds

Rev. 6/07

MA776700i

Models:

Serial Numbers:

Installation

Step 6: Install drawer.

Removal

Step 3: Push LH slide lever UP and RH lever DOWN.

Remove drawer.

Note: Slide levers are clear plastic.

All

All

Component Testing & Repair

Go To Table Of Contents

Table Shrouds

- continued

Removal / Installation

Removal

Step 4: Lower table to lowest height.

Disconnect table power cord.

Removal

Step 5: Lift seat section.

Remove two "inside" screws.

Note: If necessary, move receptacle cover

for better access to LH screw.

"Inside" Screw (LH)

Installation

Step 5: Install two "inside" screws.

Installation

Step 4: Install screws at head-end &

foot-end of outer shrouds.

Removal

Step 6: Remove screws from head-end

& foot-end of outer shrouds.

Note: Lower the drawer front to access

foot-end screws.

Models:

Serial Numbers:

"Inside" Screw (RH)

All

All

Removal

Step 7: Remove side screw & outer shroud.

Repeat for other side.

Installation

Step 3: Position outer shroud.

Install side screw.
Repeat on opposite side.

MA611602i

Table Shrouds

© Midmark Corporation 2003 SF-1838

Rev. 6/07

C-3

Component Testing & Repair

MA612002i

Go To Table Of Contents

Table Shrouds

- continued

Removal / Installation

Installation

Step 1: Install six screws securing

bottom of inner shrouds.

Removal

Step 8: Remove six screws securing

bottom of inner shrouds.

Note: The shrouds on older 222 models do not have

C-4

the offset guides shown here. On these models,
align tabs

(not shown)

Table Shrouds

© Midmark Corporation 2003 SF-1838

so that they engage each other.

Rev. 11/09

Models:

Serial Numbers:

All

All

Installation

Step 2: Install two screws securing each set of shrouds.

Repeat at head end of table.

Removal

Step 9: Remove two screws securing each set of shrouds.

Repeat at head end of table.

Note: On older 222 models, there is a wire connecting the shrouds.

This must remain in place to ensure proper grounding.

Manually Raising / Lowering Table

MA632200i

Go To Table Of Contents

Go To Page:

Step 1:Remove table shrouds.

(Access Procedures)

Component Testing & Repair

Refer To: Page

Exploded Views / Part Numbers:

Ritter Base Components ...................

Midmark Base Components ..............

Base Actuator....................................

* multiple pages due to model / serial # break

E-19*

E-20*

E-21

Models:

Serial Numbers:

All

All

Step 2: Run drill in reverse to raise table.

Run drill forward to lower table.

Note: Requires 5/16" socket w/ extension.

Manually

Raising / Lowering

© Midmark Corporation 2003 SF-1838

C-5

Component Testing & Repair

MA632300i

Go To Table Of Contents

Go To Page:

Upholstered Top

(Ritter models)

Removal / Installation

(Soft Touch Top shown)

Attention

Seamless / Styled tops are one piece.
The replacment procedure is similar.

Installation

Step 2: Secure back section to hinge.

Removal

Step 2: Remove screws securing

back section to hinge.

Caution

Hold back section in place
when performing steps 1 & 2.

Refer To: Page

Exploded Views / Part Numbers:

Upholstery - Ritter :

Soft Touch ..................................

Seamless ....................................

Installation

Step 3: Secure back release bracket.

Removal

Step 1: Remove screws securing back

release bracket.

Note: The manual back model is shown.

The procedure for power back models
is similar.

E-6

E-7

C-6

© Midmark Corporation 2003 SF-1838

Upholstered Top

(Ritter models)

Rev. 7/11/12

Models:

Serial Numbers:

222 (-001 thru -014)

All

Removal

Step 3: Remove seat section.

Installation

Step 1: Secure seat section.

223 (-001 thru -014)

All

Component Testing & Repair

Go To Table Of Contents

Go To Page:

Upholstered Top

(Ritter models)

Removal / Installation

(Soft Touch Top shown)

Installation

Step 1: Position upholstered top

& footrest pad on table.

Note: Be sure locking knobs align with

holes in back / seat mounting plates.

Refer To: Page

Exploded Views / Part Numbers:

Upholstery - Ritter :

Soft Touch ..................................

Seamless ....................................

Removal

Step 2: Remove upholstered top & footrest pad.

E-6.1

E-7.1

Models:

Serial Numbers:

222 (-015 thru -017)

All

223 (-015 thru -016)

All

Locking Knob

Unlocked

Removal

Step 1: Rotate all locking knobs to unlocked position.

Note: There are four locking knobs under back

section, and two knobs under seat section.

Locked

Installation

Step 2: Rotate locking knobs

to locked position.

MA727700i

Upholstered Top

(Ritter models)

© Midmark Corporation 2003 SF-1838

C-6.1

Component Testing & Repair

Go To Table Of Contents

Go To Page:

Upholstered Top

(Midmark models)

Removal / Installation

Removal

Step 3: Lift back section to disengage velcro,

then push toward head end.

Installation

Step 1: Slide back section toward

foot end to engage T-block.

Refer To: Page

Exploded Views / Part Numbers:

Upholstery - Midmark:

Premium .....................................

Ultra-Premium .............................

E-8

E-9

Removal

Step 2: Hold mounting frame in place,

then lift seat section.

Note: Upholstery is secured with velcro.

Installation

Step 2: Lower seat section and press

down firmly to engage velcro.

Models w/ upholstery heater only

Removal

Step 1: Disconnect wire harness.

Installation

Step 3: Connect wire harness.

Note: Do not pinch wire.

C-7

© Midmark Corporation 2003 SF-1838

Upholstered Top

(Midmark models)

Models:

Serial Numbers:

622 (-001 thru -006)

All

MA634100i

623 (-001 thru -006)

All

Component Testing & Repair

Go To Table Of Contents

Go To Page:

Upholstered Top

Removal / Installation

(Midmark models)

Step 2 applies only to models with optional upholstery heater.

Removal

Step 2: Disconnect upholstery heater harness.

Installation

Equipment Alert

Be sure harness is not pinched
between upholstery & upperwrap.

Step 2: Connect upholstery heater harness.

Installation

Step 1: Position upholstered top & footrest pad on table.

Note: Back support plate must slide under paper roll holder.

Refer To: Page

Exploded Views / Part Numbers:

Upholstery - Midmark:

Premium .....................................

Ultra-Premium .............................

Removal

Step 3: Remove upholstered top & footrest pad.

Note: Slide upholstery up to remove from back support plate.

Be sure locking knobs align with holes in back / seat
mounting plates.

E-8.1

E-9.1

Models:

Serial Numbers:

622 (-007 & -008)

All

Unlocked

623 (-007 thru -010)

All

Locking Knob

Installation

Step 3: Rotate locking knobs to locked position.

Removal

Locked

MA727800i

Step 1: Rotate all locking knobs to unlocked position.

Note: There are four locking knobs under back

section, and two knobs under seat section.

Upholstered Top

(Midmark models)

© Midmark Corporation 2003 SF-1838

Rev. 7/11/12

C-7.1

Component Testing & Repair

MA612601i

Go To Table Of Contents

Chair Arms / Brace (optional)

Removal

Arm Removal

Step 1: Squeeze lever.

Remove chair arm.

Refer To: Page

Exploded Views / Part Numbers:

Refer to Midmark Medical Accessory
Service & Parts Manual (004-0096-00)

It may be necessary to remove the chair arm brace

when performing certain procedures.

Arm Brace Removal

Step 1: Remove table shrouds.

Arm Brace Removal

Step 3: Remove brace.

Chair Arms

C-8

© Midmark Corporation 2003 SF-1838

Lever

Models:

Serial Numbers:

Arm Brace Removal

Step 2: Remove two screws.

Repeat on opposite side.

All

This is an optional accessory

MA612702i

Top Cover (Back Limit Switch Access)

Go To Table Of Contents

Go To Page:

Removal / Installation

Component Testing & Repair

Refer To: Page

Table Shrouds ...................................... C-2

Removal

Step 1: Lower table shrouds.

Refer to: Section C - Table Shrouds

Installation

Step 2: Reattach table shrouds.

Removal

Step 2: Remove screws

securing top cover.

223 / 623

Models

only

Back Up
Limit Switch

Back Down
Limit Switch

Removal

Note

The back limit switches can be accessed without completely
removing the top cover. But if removing the cover is necessary,
perform Step 3.

Step 3: Partially serparate the back lift cylinder as shown.

Slide top cover off of cylinder.

Installation

Step 2: Secure top cover with

screws removed in Step 2.

223 / 623

(Power Back Cylinder)

Installation

Step 1: Slide top cover over back cylinder.

Reattach back cylinder.

222 / 622

(Manual Back Cylinder)

Models:

Serial Numbers:

All

All

MA736300i

Top Cover

© Midmark Corporation 2003 SF-1838

C-9

Wiring Diagrams

Go To Table Of Contents

Go To Page:

Click on the Go To Page button and enter the desired

page number. (Note: Letters are case sensitve. ex. D-2)

Model Page

Wiring Diagrams

222:

(-001 & -005) ....................................................

(-002 & -006) ....................................................

(-003 & -007) ....................................................

(-004 & -008) ....................................................

(-009 & -017) ....................................................

(-010) ................................................................

(-011 & -013)

(-012 & -014) ....................................................

(-015) ................................................................

(-016) ................................................................

.................................................... D-8

D-2
D-3
D-4
D-5
D-6
D-7

D-9
D-10
D-11

223:

(-001 & -005) ....................................................

(-002 & -006) ....................................................

(-003 & -007) ....................................................

(-004 & -008) ....................................................

(-009) ................................................................

(-010) ................................................................

(-011 & -013)

(-012 & -014) ....................................................

(-015) ................................................................

(-016) ................................................................

.................................................... D-18

D-12
D-13
D-14
D-15
D-16
D-17

D-19
D-20
D-21

622:

(-001) ................................................................

(-002) ................................................................

(-003)

.............................................................. D-6

(-004)

.............................................................. D-23

(-005)

.............................................................. D-8

(-006)

.............................................................. D-24

(-007)

.............................................................. D-10

(-008)

.............................................................. D-25

D-3
D-22

623:

(-001) ................................................................

(-002) ................................................................

(-003 & -009) ....................................................

(-004) ................................................................

(-005) ................................................................

(-006) ................................................................

(-007) ................................................................

(-008) ................................................................

(-010) ................................................................

D-26
D-27
D-28
D-29
D-30
D-31
D-32
D-33
D-29*

Section D

Models:

Serial Numbers:

Wiring Diagrams

© Midmark Corporation 2003 SF-1838

Rev. 3/06

D-1

Wiring Diagrams

Go To Table Of Contents

Go To Page:

Refer To: Page

Fuses ............................................... E-24

IEC
Inlet

Blue

eriW

ssenraH:morF:oTrebmuNtraP

A

B

telnICEICPniaM

nwoD/pUesaB
sehctiwStimiL

A

1 3

J1

F3

Blk

C

Foot

Control

Up Limit

Switch

COM

NC

Wht

Wht

Down

B

Blk

Red

Wht

Wht

Grn/Yel

Wht

Blk

Blk

F4

3
4

J4
J5
J6

1
2

Brn

J7

J8

F1
F2

Main PC

Board

J3 J2

Wht

Limit

Switch

00-9751-510

draoB

CPniaM

draoB

)BmetIsedulcni(

00-9751-510

)AmetIsedulcni(

COM

NC

Blk

Blk

Choke

Wht

Wht

Blk

C

D-2

© Midmark Corporation 2003 SF-1838

rotautcAesaB

seriW

Wiring Diagrams

CPniaM

draoB

00-5361-510

)ekohcsedulcni(

Models:

Serial Numbers:

222

(-001 & -005)

all

Base Actuator

Blk

Grn/Yel

Go To Table Of Contents

Go To Page:

Blue

Brn

Brn

Grn/Yel

Blue

Wiring Diagrams

Refer To: Page

D

IEC
Inlet

Brn

Blue

Grn/Yel

Grn/Yel

Blue

Brn

A

Fuses ............................................... E-24

Circuit

Breaker

Brn

E

Grn/Yel

Receptacle

Foot

Control

Blue

Up Limit

Switch

COM

NC

Down

Limit

Switch

COM

NC

Wht

Wht

Blk

Blk

Blk

Wht

Red

B

Wht

Wht

Blk

Blk

Base Actuator

F4

3
4

J4
J5
J6

1
2

J7

J8

F1
F2

Main PC

Board

J3 J2

Wht

Choke

Wht

Wht

Blk

1 3

J1

F3

Blk

Blk

C

eriW

ssenraH:morF:oTrebmuNtraP

A

B

C

D

E

telnICEICPniaM

nwoD/pUesaB

sehctiwStimiL

rotautcAesaB

seriW

rekaerBtiucriCtelnICEI

elcatpeceRtiucriC

00-9751-510

draoB

CPniaM

draoB

CPniaM

draoB

rekaerB

)BmetIsedulcni(

00-9751-510

)AmetIsedulcni(

00-5361-510

)ekohcsedulcni(

03-4951-510

00-5951-510

Models:

Serial Numbers:

222

(-002 & -006)

all

622

(-001)

all

Wiring Diagrams

© Midmark Corporation 2003 SF-1838

Rev. 3/06

D-3

Wiring Diagrams

Go To Table Of Contents

Go To Page:

Refer To: Page

Fuses ............................................... E-24

Blue

D

IEC
Inlet

Brn

eriW

ssenraH:morF:oTrebmuNtraP

A

B

telnICEICPniaM

nwoD/pUesaB
sehctiwStimiL

C

rotautcAesaB

seriW

Wht

Wht

Blue

Grn/Yel

B

Blk

Red

Wht

Wht

Grn/Yel

Wht

Blk

Blk

Distribution

Board

Wht

Wht

F1

Grn/Yel

Brn

J1J2J3

J5J6J7

Brn

F2

Blue

J4

Foot

Control

J8

Up Limit

Switch

COM

NC

E

Down

Limit

Switch

Brn

00-9751-510

draoB

CPniaM

draoB

CPniaM

draoB

)BmetIsedulcni(

00-9751-510

Drawer

)AmetIsedulcni(

Heater

00-5361-510

)ekohcsedulcni(

Wht

Blue

Wht

Drawer
Heater
Switch

COM

NC

Blk

Blk

Base Actuator

F4

3
4

J4
J5
J6

1
2

Blue

Brn

J7

J8

F1
F2

Main PC

Board

J3 J2

Wht

Choke

Wht

Wht

Blk

A

1 3

J1

F3

Blk

C

Blk

D

E

D-4

© Midmark Corporation 2003 SF-1838

noitubirtsiD

draoB

telnICEI

/etalPretaeH

hctiwSretaeH

draoB

Wiring Diagrams

00-4951-510

noitubirtsiD

00-9261-510

Models:

Serial Numbers:

222

(-003 & -007)

all

Blue

Go To Table Of Contents

Go To Page:

Grn/Yel

Wiring Diagrams

Refer To: Page

Fuses ............................................... E-24

E

IEC
Inlet

Brn

Distribution

Board

Wht

Wht

Drawer

Heater

F1

Grn/Yel

Brn

J1J2J3

J5J6J7

Brn

Wht

Wht

F2

Blue

2

5

Brn

J4

J8

Breaker

F

Brn

1

4

Drawer
Heater
Switch

G

Circuit

Blue

Blue

Brn

D

Grn/Yel

Brn

Receptacle

Foot

Control

Blue

Up Limit

Switch

COM

NC

Down

Limit

Switch

COM

NC

Wht

Wht

Blk

Blk

Blue

Blk

Red

Wht

Wht

Grn/Yel

Wht

Grn/Yel

B

Base Actuator

Blk

Blk

F4

3
4

J4
J5
J6

1
2

Blue

Brn

J7

J8

F1
F2

Main PC

Board

J3 J2

Wht

Choke

Wht

Wht

Blk

1 3

J1

F3

Blk

Blk

A

eriW

ssenraH

A

C

B

C

D

E

:morF:oTrebmuNtraP

telnICEICPniaM

draoB

nwoD/pUesaB

sehctiwStimiL

rotautcAesaB

seriW

CPniaM

draoB

CPniaM

draoB

elcatpeceRtiucriC

rekaerB

noitubirtsiD

draoB

telnICEI

00-9751-510

)BmetIsedulcni(

00-9751-510

)AmetIsedulcni(

00-5361-510

)ekohcsedulcni(

00-5951-510

00-4951-510

Models:

Serial Numbers:

222

(-004 & -008)

all

F

G

/etalPretaeH

hctiwSretaeH

rekaerBtiucriC

noitubirtsiD

draoB

noitubirtsiD

draoB

00-9261-510

03-8070-510

Wiring Diagrams

© Midmark Corporation 2003 SF-1838

Rev. 12/10

D-5

Wiring Diagrams

Go To Table Of Contents

Go To Page:

Refer To: Page

Fuses ............................................... E-24

eriW

ssenraH:morF:oTrebmuNtraP

A

B

C

/telnICEI

/sredloHesuF

remrofsnarT

nwoD/pUesaB
sehctiwStimiL

rotautcAesaB

seriW

CPniaM

draoB

CPniaM

draoB

CPniaM

draoB

Fuse
Holder

Brn Blue

Brn Brn

IEC
Inlet

Fuse
Holder

Blue

A

Transformer

Grn/Yel

Brn

F4

Foot

Blk

Wht

Control

Red

B

Wht

Blk

Up Limit

Switch

COM

NC

00-0851-510

)BmetIsedulcni(

Down

Limit

Wht

Wht

Wht

Blk

J4
J5
J6

1

3

2

4

J7

J8

F1
F2

Main PC

Board

J3 J2

Wht

Switch

00-0851-510

)AmetIsedulcni(

00-5361-510

)ekohcsedulcni(

COM

NC

Blk

Blk

Base Actuator

Wht

Blk

Wht

Blue

1 3

J1

F3

Blk

C

Choke

Blk

D-6

© Midmark Corporation 2003 SF-1838

Wiring Diagrams

Rev. 9/10

Models:

Serial Numbers:

222

(-009 & -017)

all

622

(-003)

all

Fuse

Go To Table Of Contents

Go To Page:

Holder

IEC
Inlet

Fuse
Holder

Wiring Diagrams

Refer To: Page

Fuses ............................................... E-24

Distribution

Board

Wht

Wht

Drawer

Heater

F1

Grn/Yel

Brn

J1J2J3

J5J6J7

Brn

Wht

Wht

Blue

F2

Blue

J4

J8

E

Brn

1

2

4

5

Blue

Drawer
Heater
Switch

Foot

Control

D

Up Limit

Switch

COM

NC

Down

Limit

Switch

COM

NC

Wht

Wht

Blk

Blk

Brn Blue

Brn Brn

Grn/Yel

Grn/Yel

F4

Blk

Wht

Red

B

Wht

Wht

Blk

Blk

J4
J5
J6

1

3

2

4

Base Actuator

A

J7

Brn

Blue

Brn

J8

F1
F2

Main PC

Board

J3 J2

Wht

Wht

Wht

Blk

Blue

1 3

J1

F3

Choke

Blk

Transformer

Blue

Blk

C

eriW

ssenraH:morF:oTrebmuNtraP

A

B

C

D

/telnICEI

/sredloHesuF

remrofsnarT

nwoD/pUesaB
sehctiwStimiL

rotautcAesaB

seriW

noitubirtsiD

draoB

CPniaM

draoB

CPniaM

draoB

CPniaM

draoB

remrofsnarT

00-0851-510

)BmetIsedulcni(

00-0851-510

)AmetIsedulcni(

00-5361-510

)ekohcsedulcni(

00-4951-510

Models:

Serial Numbers:

222

(-010)

all

E

/etalPretaeH

hctiwSretaeH

noitubirtsiD

draoB

00-9261-510

Wiring Diagrams

© Midmark Corporation 2003 SF-1838

Rev. 12/10

D-7

Wiring Diagrams

Go To Table Of Contents

Go To Page:

Refer To: Page

Fuses ............................................... E-24

eriW

ssenraH:morF:oTrebmuNtraP

A

B

C

D

E

D-8

© Midmark Corporation 2003 SF-1838

telnICEICPniaM

draoB

nwoD/pUesaB
sehctiwStimiL

rotautcAesaB

seriW

noitalosI

remrofsnarT

elcatpeceR

CPniaM

draoB

CPniaM

draoB

EmetI

DmetI

Wiring Diagrams

00-2581-510

)BmetIsedulcni(

00-2581-510

)AmetIsedulcni(

00-5361-510

)ekohcsedulcni(

00-5481-510

00-5951-510

Models:

Serial Numbers:

222

(-011 & -013)

all

622

(-005)

all

Wiring Diagrams

Go To Table Of Contents

Go To Page:

Refer To: Page

Fuses ............................................... E-24

eriW

ssenraH:morF:oTrebmuNtraP

Models:

Serial Numbers:

2

5

1

4

222

(-012 & -014)

all

A

B

C

D

E

F

G

telnICEICPniaM

nwoD/pUesaB

sehctiwStimiL

rotautcAesaB

seriW

noitalosI

remrofsnarT

elcatpeceRDmetI

/etalPretaeH

hctiwSretaeH

noitubirtsiD

draoB

00-2581-510

draoB

CPniaM

draoB

CPniaM

draoB

EmetI

noitubirtsiD

draoB

AmetI

)BmetIsedulcni(

00-2581-510

)AmetIsedulcni(

00-5361-510

)ekohcsedulcni(

00-5481-510

00-5951-510

00-9261-510

00-4951-510

Wiring Diagrams

© Midmark Corporation 2003 SF-1838

Rev. 12/10

D-9

Wiring Diagrams

Go To Table Of Contents

Go To Page:

Refer To: Page

Fuses ............................................... E-24

Grn/Yel

Circuit

Breaker

Wire

Harness From: To: Part Number

A

B

BaseUp / Down

Limit Switches

Base Actuator

Wires

Main PC Board

Main PC Board

015-2003-00

015-1635-00

(includes choke)

C

Brn

Brn

Blue

Grn/Yel

D

Blue

Circuit

Breaker

Foot

Control

Up Limit

Switch

COM

NC

Down

Limit

Switch

COM

NC

Wht

Wht

Blk

Blk

Grn/Yel

F4

Blk

Wht

Red

A

Wht

Wht

Blk

Blk

J4
J5
J6

1

3

2

4

Main PC

J7

J8

F1
F2

Board

Brn

Blue

1 3

J1

F3

J3 J2

Wht

Blk

B

Choke

Wht

Blk

Wht

C

D

D-10

Circuit Breaker

(brown wire)

Circuit Breaker

(blue wire)

© Midmark Corporation 2003 SF-1838

Table Receptacle

Table Receptacle

Wiring Diagrams

Rev. 11/11

015-1886-00

015-1886-01

Models:

Serial Numbers:

222

(-015)

all

622

(-007)

all

Base Actuator

Blk

MA710600i

Brn

Go To Table Of Contents

Go To Page:

C

Grn/Yel

Blue

D

F

Grn/Yel

Blue

Brn

J3

J10

J7

J4

J8

J9

J6

F1

J1

J2

F2

J5

Distribution Board

Blue

Brn

Wht

Wht

Drawer

Heater

Wht

Wht

Drawer
Heater

E

1

2

4

5

Switch

Brn

Brn

Blue

Foot

Control

Up Limit

Switch

COM

NC

Down

Limit

Switch

COM

NC

Blue

Wht

Wht

Blk

Blk

Blk

Wht

Red

A

Wht

Blk

Blk

Wht

Base Actuator

F4

J4
J5
J6

3
4

J7

1
2

Grn/Yel

Grn/Yel

J8

J9 J10

Main PC

Board

Wht

Choke

Wht

Wht

Blk

Grn/Yel

Brn

1

F1
F2

J3 J2

MA711000-01i

Blk

Brn

J1

Blk

Wiring Diagrams

Refer To: Page

Fuses ............................................... E-24

Blue

Blue

3

F3

Wire

Harness From: To:

E

F

BaseUp / Down

Limit Switches

Base Actuator

Wires

Circuit Breaker

(brown wire)

Circuit Breaker

(blue wire)

Heater Switch Distribution Board

Distribution

Board

Main PC Board 015-2003-00

Main PC Board

Table Receptacle

Table Receptacle

Main PC Board

B

A

B

C

D

Part

Number

015-1635-00

(incl. choke)

015-1886-00

015-1886-01

015-2004-00

015-2005-00

Models:

Serial Numbers:

222

(-016)

all

Wiring Diagrams

© Midmark Corporation 2003 SF-1838

Rev. 11/11

D-11