Oki C9800 Series

Top Cover Open Error
Error Codes that Apply
310
1. Ensure that the Top Cover Latch is free of obstructions and fully closed.
2. Cycle the printer's power.
3. If the problem persists follow the procedure below.
1. Top Cover Interlock Switch
2. HVPS
3. Engine Control Board
Steps Action Taken Yes No
1
Check the following for evidence of
fault or damage:
Top Cover latch (right side)
Top Cover Interlock Actuator
Is there any damage or
misalignment?
Replace any damaged
parts.
Go to Step 2.
2
Test the Top Cover Interlock Switch.
Run the Scan Switch test to test
the Switch.
Does the switch function correctly?
Replace the Engine
Control Board
Go to Step 3.
3
Replace the Top Cover Interlock
Switch.
Does the error persist?
Go to step 4. Complete
4
Check the switch voltage on the
HVPS. Is there +5 V across the
connector?
Go to Step 5.
Replace the HVPS
5
Check all pins on the HVOLT Harness
for continuity.
1. Disconnect the ribbon cable.
2. Check continuity of the ribbon
cable.
Replace the Engine
Control Board
Replace the Ribbon
cable.
Replace the HVPS
Initial Troubleshooting Actions to Take
Parts of the Printer that Apply
Troubleshooting Procedure