TAG 805: Black Prints
3-162 Troubleshooting Analysis Guide (TAGs) June 1999
TAG 805: Black Prints
Error Code: 805
Possible Causes: Contaminated toner/carrier mix
Possible Defects: Charge corona
Printhead assembly
Connectors or wiring
PCL board
IGS board
High voltage unit
Charge corona lead
Photoconductor unit
Developer unit
Charge corona terminal assembly
1
Turn the printer off and unplug the power cord.
• Verify that J/P23, J/P24, J/P41, and the charge corona 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 charge corona.
• 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, charge corona, developer unit, and cleaner unit been
replaced recently?
No: Continue.
Yes: Go to #6 in this TAG.
4
Replace the photoconductor unit and charge corona.
• Turn the printer on.
• Run test prints.
Has the problem been resolved?
No: Reinstall the original photoconductor unit and charge corona, then continue.
Yes: Turn to TAG 002: Check & Problem Resolution.
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