641 Chair Hand / Foot Controls Test and Repair
Isolating a Malfunction
The cord connector is keyed and must be oriented properly to connect. Tighten locking ring to secure connection.
1.Plug the hand / foot control into the other connection port.
2.Does the hand / foot control work properly? If Yes, replace the wire harness at the malfunctioning connection port. Refer to: Wiring Diagrams for part number. If No, perform the Hand / Foot Control Test.
Hand and Foot Control Test
1.Move both switches on Mode Select block to On.
2.Unplug Chair to reset PC Board. Plug Chair back in.
3.One at a time, press and hold each button on the hand / foot control. Do you hear beeps each time a button is pressed? If Yes, that button is functioning properly. If No, perform the Control Cord Test.
To return to normal operation
1.Move Mode Select block switches back to original position.
2.Unplug Chair to reset board.
3.Plug Chair back in.
Control Cord Test
| Meter Reading | Status | Required Action |
|---|---|---|
|
All pins less than 100 Ω |
|
Cord OK, Replace touch pad |
|
Any pin(s) OL |
|
Replace control cord. |
The hand and foot control cords are interchangeable. If a working cord is available, switch the cords to test. If one is not available, perform the Continuity Test.
1.Disconnect cord from hand / foot control. For detailed illustration of assemblies, Refer to: Hand Control / Foot Control
2.Place one meter probe on Pin # 1 of round connector. Place other meter probe on Pin #1 of flat connector. Check meter reading.
3.Repeat Step 2 for connector Pins #2 thru 18.
