Oki C9800 Series Service & Troubleshooting Manual page 110

Cyan, Magenta, Yellow, Black LED Failure
Error Codes that Apply
131 Yellow, 132
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. LED Head 2. LEDPWR harness
5. CM LED DATA harness
Troubleshooting Procedure
Steps
Check LED Head. Exchange the
1
affected LED Head with another LED
Head. Does the error move with the
Ensure the LED Head harness is
2 properly connected and not damaged.
Is the wiring harness defective?
Check harness continuity between the
3
LED Head and the Engine Control
Board. Is there continuity?
Check harness continuity between the
4
LED Head and the LED Relay Board.
Check for +5 V to the LED Relay
5
Check for +5 V at the LVPS.
6
Magenta, 133 Cyan,
3. LED Relay Board
6. LED Relay Board
Action Taken
LED Head?
Is there continuity?
Board.
134 Black
4. YK LED DATA harness
7. Engine Control Board
Yes
Replace the LED Head.
Reconnect or
replace the wiring
harness.
Go to Step 4.
Go to Step 5.
Replace the LED
Relay Board
Replace the Engine
Control Board
No
Go to Step 2.
Go to Step 3.
Replace the data
harness.
Replace the power
harness.
Go to Step 6.
Replace the LVPS