TAG 805: Black Prints

Error Code:

805

Possible Causes: Contaminated toner/carrier mix

Possible Defects: Main charger

Printhead assembly

Connectors or wiring

PCL board

IGS board

High voltage unit

Main charger lead

Photoconductor unit

Developer unit

Main charger terminal assembly

1 Turn the printer off and unplug the power cord.

•Verify that J/P23, J/P24, J/P41, and the main charger high voltage lead are connected properly.

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

•Clean the contacts on the main charger.

•Open the printer’s top cover and install an interlock by-pass tool.

•Run diagnostic test 009.

Is the photoconductor belt covered with toner?

No: Loose connectors or contamination were at fault. Turn to TAG 002: Check & Problem Resolution.

Yes: Continue.

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 Has the photoconductor unit, main charger, developer unit, and cleaner unit been replaced recently?

No: Continue.

Yes: Go to #6 in this TAG.

4 Replace the photoconductor unit and main charger.

•Turn the printer on.

•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.

Troubleshooting Analysis Guide (TAGs)

3-163