Oki ES3640MFP Service & Troubleshooting Manual page 120

Error in the Transfer Belt
Error Codes that Apply
330 and 917
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. Transfer Unit
2. Transfer Unit Motor
3. Belt Rotation Sensor
4. Engine Control Board
Troubleshooting Procedure
Steps
Test the Belt Rotation Sensor.
1
Run the Switch Scan test
the Hall IC.
Does the sensor function correctly?
2
Test the Transfer Unit Motor.
1. Close the Interlock Switches for the
test.
2. Run the Motor Clutch test
the Transfer Belt Motor.
Does the motor operate?
Check all pins on the HALL1 Harness
3
for continuity.
Disconnect HALL1 Harness.
Is the harness conductive?
Check all pins of the harness for
4
continuity. Disconnect the ribbon
cable.
Is the cable conductive?
Action Taken
and test
to test
Yes
Go to Step 2.
Replace the
Transfer Unit. If the
error persists, go to
Step 3.
Replace the Motor
Driver Board. If the
error persists, go to
Step 4.
Replace the Engine
Control Board
No
Replace the
Sensor. If the error
persists, go to Step 3.
Replace the motor. If
the error persists, go to
Step 3.
Replace the HALL1
Harness.
Replace the
Harness.