10 Verify that the toner patch sensor board connector, mounted on the developer unit, is connected properly.

Is it connected properly?

No: A loose connection was at fault. Turn to TAG 002: Check & Problem Resolution.

Yes: Replace the PCL board, then turn to TAG 002: Check & Problem Resolution.

11 Turn the printer off and unplug the power cord.

•Disconnect J/P41 and J/P24.

•Check P41-30 to P24-2 for continuity.

Is there continuity?

No: Repair or replace the connectors or wiring from P41-30 to P24-2, then turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

12 Reconnect J/P24.

•Disconnect J/P23.

•Check P41-33 to P23-7 for continuity.

Is there continuity?

No: Continue.

Yes: Repair or replace the connectors or wiring from P41-33 to P23-7, then turn to TAG 002: Check & Problem Resolution.

13 Reconnect J/P23.

•Disconnect J/P85 from the high voltage unit.

•Check P85-8 to J25-7 for continuity.

Is there continuity?

No: Repair or replace the connectors or wiring from P85-8 to J25-7, then turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

14 Reinstall the developer unit.

•Reconnect J/P85.

•Disconnect J/P41 and J/P24.

•Check P41-40 to P24-3 for continuity.

Is there continuity?

No: Repair or replace the connector or wiring from P41-40 to P24-3, then turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

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Troubleshooting Analysis Guide (TAGs)