6 Turn the printer off and unplug the power cord.

Disconnect J/P42 and J/P41.

Check P42-18 to P41-3 for continuity.

Is there continuity?

No: Repair or replace the connectors or wiring from P42-18 to J/P90-18 to P41-3, then turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

7 Check P41-3 to P42-18 for continuity to ground.

Is there continuity?

No: Continue.

Yes: Repair or replace the connectors or wiring from P42-18 to J/P90-18 to P41-3, then turn to TAG 002: Check & Problem Resolution.

8 Check P42-17 to P41-4 for continuity.

Is there continuity?

No: Repair or replace the connectors or wiring from P42-17 to J/P90-17 to P41-4, then turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

9 Check P41-4 to P42-17 for continuity to ground.

Is there continuity?

No: Continue.

Yes: Repair or replace the connectors or wiring from P42-17 to J/P90-17 to P41-4, then turn to TAG 002: Check & Problem Resolution.

10 Check P42-16 to P41-5 for continuity.

Is there continuity?

No: Repair or replace the connectors or wiring from P42-16 to J/P90-16 to P41-5, then turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

11 Check P41-5 to P42-16 for continuity to ground.

Is there continuity?

No: Continue.

Yes: Repair or replace the connectors or wiring from P42-16 to J/P90-16 to P41-5, then turn to TAG 002: Check & Problem Resolution.

12 Check P42-15 to P41-6 for continuity.

Is there continuity?

No: Repair or replace the connectors or wiring from P42-15 to J/P90-15 to P41-6, then turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

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Troubleshooting Analysis Guide (TAGs)

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HP C30 manual Troubleshooting Analysis Guide TAGs