Oki ES3640MFP Service & Troubleshooting Manual page 122

Test the indicated Imaging Unit Motor
1. Remove the affected Imaging Unit.
5
2. Close the Interlock Switches.
3. Run the Motor Clutch test
affected motor.
Does the motor function correctly?
Check the Up/Down Mechanism and
associated gears. See "Drive Motors"
for a description of Up/Down
Mechanism operation.
1. Access the Cyan Unit Motor.
6
2. Rotate the Cyan Motor manually in
both directions.
Do the gears and links function
properly?
Check for +24 V at the Motor Driver
7
Board
Go to Step 6.
for the
Replace the Cyan
Imaging Unit Motor. If
the error persists, go to
Step 7.
Replace the Motor
Driver Board
Replace the motor. If
the error persists,
go to Step 6.
Replace the Up/Down
Mechanism.
Replace the LVPS