Midmark 002-1749-00 Installation Manual

Motor Control Hub PC Board [002-1749-00]

midmark.com

WARNING

Always disconnect chair from power source before removing
any covers. Failure to do so may result in personal injury.

To remove Motor Control Hub PC Board...

A) Remove seat / back upholstery.
B) Remove four screws, seat mounting board,
and seat cover plate.
C) Disconnect wiring from PC Board.
D) Remove two screws and mounting bracket.
E) Remove PC Board.

Note: Push latches back, then lift PC Board off of mounting studs.

Applies to Models:

630 (-010 thru -013)
630 (-020 thru -023)

Special Tools:

none

Language of origin: English

Equipment Alert

The wire connections and wire routing must be put
back in original locations before installing covers.

Screw

Mounting

Bracket

Screw

Seat

Mounting Board

Seat

Cover Plate

© 2014 Midmark Corp. | 60 Vista Drive Versailles, OH 45380 USA | 1-800-643-6275 | 1-937-526-3662 |

J13

J15

J14

TPA

J9

J11

TPB1

TPB2

J12

F3

TPB3

J2

TPD2

J1

TPD1

J6

F1

TPD3

J4

J3

J5

J7

TPC1

TPC2

J8

J10

F2

TPC3

Equipment Alert

Anytime the limit switch wires or the actuator wires
are disconnected, the chair must be calibrated.

To install Motor Control Hub PC Board...

A) Install PC Board onto mounting bracket.
B) Position mounting bracket and secure with two screws.
C) Connect wiring to PC Board.
D) Calibrate chair.
E) Position seat cover plate, and seat mounting board,
then secure with four screws.
F) Install upholstery.

English-1

Style G

003-2717-00 Rev. AA1 (10/29/18)

J2

midmark.com

Calibration Procedure

During the calibration procedure you will hear a steady pattern of “beeps” .
The chair will run all functions (base, back, tilt, foot) to their minimum and maximum positions,
then return to a lowered at position.
When calibration is complete, the chair will stop moving and you will hear three short “beeps”.

You must calibrate the chair in the following situations:

• After replacing Power Supply PC Board.

• After replacing Motor Control Hub PC Board.

• After replacing Machine Control Board.

• After replacing Base, Back, Tilt or Foot actuators.

• After a limit switch bracket is adjusted.

• When an error code indicates calibration is needed.

Anytime the PC Board is removed or the actuator wires
are disconnected, the chair must be calibrated.

Equipment Alert

Note

When S3 switch is pressed, then released you will
hear a steady pattern of “beeps”. When calibration
is completed you will hear three short beeps.

To calibrate...

A) Unplug chair power cord.
B) When the digital display darkens, move S2 switch number four to ON (up).
C) Plug in chair power cord.
D) When the digital display darkens, press and release S3 switch.
E) When calibration is complete, unplug chair power cord.

TP200 Rev. A

© 2014 Midmark Corp. | 60 Vista Drive Versailles, OH 45380 USA | 1-800-643-6275 | 1-937-526-3662 |

F) Move S2 switch number four to OFF (down).
G) When the digital display darkens, plug in chair power cord.

English-2

Machine

Control

Board

MA9053i

Switch

Number

Four

Digital

Display