Oki C9800 Series Service & Troubleshooting Manual page 127

MT Home Position Detection Error
Error Codes that Apply
125
Initial Troubleshooting Actions to Take
1. Cycle the printer's power.
2. If the problem persists follow the procedure below.
Parts of the Printer that Apply
1. MPT Home Position Sensor
2. Home Position Sensor Harness
3. Registration Motor
4. Engine Control Board
Troubleshooting Procedure
Steps
Check the MPT Lift Plate by printing a
1
job from MPT.
Does the Lift Plate operate correctly?
2
Test the Registration Motor
Run the Motor Clutch test
the motor.
Is the motor operating correctly?
Test the MPT Home Position Sensor.
3
Run the Scan Switch test
the Sensor.
Does the sensor function correctly?
Check continuity of the MPT Home
Position Sensor harness. Is the wiring
4
harness conductive?
Action Taken
to test
to test
Yes
Go to Step 3.
Replace the MPT
Assembly
Replace the Engine
Control Board
Replace the Engine
Control Board
No
Go to Step 2.
Replace the
Registration Motor
Go to Step 4.
Replace the
MPT Home Position
Sensor harness.