HP C30 manual Is the resistance at least 1K‡WW?, Is there resistance?

5 Turn the printer off and unplug the power cord.

•Disconnect J/P41.

•Check P41-21 for continuity to ground.

Is there continuity?

No: Continue.

Yes: Repair or replace the connectors or wiring that have continuity to ground:

P41-21 to P44-2, or J44-2 to P5-7; then turn to TAG 002: Check & Problem Resolution.

6 Check P41-21 to P41-22 for resistance.

Is the resistance at least 1K‡WW?

No: Continue.

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

7 Remove the fuser unit.

•Check P41-21 to P5-7 for resistance.

Is there resistance?

No: Continue.

Yes: Repair or replace the connectors or wiring that have resistance:

P41-21 to P44-2, or J44-2 to P5-7; then turn to TAG 002: Check & Problem Resolution.

8 Check P41-22 to P5-6 for resistance.

Is there resistance?

No: Replace the fuser unit, then turn to TAG 002: Check & Problem Resolution.

Yes: Repair or replace the connectors or wiring that have resistance: P41-22 to P44-1, or J44-1 to P5-6; then turn to TAG 002: Check & Problem Resolution.

3-74 Troubleshooting Analysis Guide (TAGs)