TAG 804: Prints With Light Horizontal Bands

Error Code:

804

Possible Causes: Loose printhead connectors

Possible Defects: Transfer charger unit

Photoconductor unit

Main charger

1 Turn the printer off and unplug the power cord.

Perform the every-call cleaning procedure, described in Chapter 9, “General Printer Mainte- nance” .

Verify that J/P30 and J/P31 are connected properly.

Turn the printer on.

Run test prints.

Has the problem been resolved?

No: Continue.

Yes: Contamination or loose connectors were at fault. Turn to TAG 002: Check & Problem Resolution.

2 Check the voltages, as outlined in Chapter 9, “General Printer Maintenance” .

Are the voltages correct?

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

Yes: Continue.

3 Have the photoconductor unit and main charger have been replaced recently?

No: Continue.

Yes: Go to #5 in this TAG.

No: Replace the photoconductor unit and main charger.

Yes: Turn on the printer.

4 Run test prints.

Has the problem been resolved?

No: Reinstall the original photoconductor unit and main charger, then continue.

Yes: Turn to TAG 002: Check & Problem Resolution.

5 Replace the transfer charger unit.

Has the problem been resolved?

No: Replace the photoconductor unit. If this resolves the problem, turn to TAG 002: Check & Problem Resolution. If this does not resolve the problem, refer to the Chapter 4, “Print Quality Samples” . Compare the test prints with the print samples, and identify a sample having the same print flaw as the test prints; turn to the TAG listed under the sample.

Yes: Turn to TAG 002: Check & Problem Resolution.

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Troubleshooting Analysis Guide (TAGs)

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HP C30 manual TAG 804 Prints With Light Horizontal Bands