19 Turn the printer off and unplug the power cord.

•Disconnect J/P70 and J/P10.

•Check P70-1 to P10-1 for continuity.

Is there continuity?

No: Repair or replace the connectors or wiring from P70-1 to P10-1, then turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

20 Check P70-2 and P10-2 for continuity.

Is there continuity?

No: Repair or replace the connectors or wiring from P70-2 to P10-2, then turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

21 Reconnect J/P70.

•Connect negative lead of meter to P10-2 and positive lead of meter to P10-1.

Is the resistance approximately 550KΩ?

No: Replace the AC power supply, then turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

22 Disconnect J/P12.

•Check J10-2 (power control #2 board) for continuity to ground.

Is there continuity?

No: Continue.

Yes: Replace the power control #2 board, then turn to TAG 002: Check & Problem Resolution .

23 Reconnect J/P10 and J/P12.

•Disconnect J/P40.

•Check P40-36 for continuity to ground.

Is there continuity?

No: Replace the PCL board, then turn to TAG 002: Check & Problem Resolution.

Yes: Repair or replace the connectors or wiring from P40-36 to P12-1, then turn to TAG 002: Check & Problem Resolution.

24 Power-on-reset the printer.

•Check TP3-36 on the PCL board for a voltage change from +24 Vdc to 0 Vdc during the 15 sec- onds after the output tray jogging test.

Does the voltage change from +24 Vdc to 0 Vdc?

No: Replace the PCL board, then turn to TAG 002: Check & Problem Resolution.

Yes: Go to #11 in this TAG.

Troubleshooting Analysis Guide (TAGs)

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