TAG 800: Prints Blank or With Dark Horizontal Bands
June 1999 Troubleshooting Analysis Guide (TAGs) 3-147
TAG 800: Prints Blank or With Dark Horizontal Bands
Error Code: 800
Possible Defects: Photoconductor unit,
Printhead assembly
IGS board
Main drive gear assembly
Connectors or wiring
Transfer corona
High voltage unit
Upper paper guide assembly
Developer unit
If there is a developed image on the paper other than dark horizontal bands, follow TAG
804: Prints With Light Horizontal Bands.
1
Turn the printer off and unplug the power cord.
• Verify that J/P7, J/P27, J/P41, J/P23, J/P30, J/P31, and transfer corona high voltage unit lead are
connected properly.
• Perform the every-call cleaning procedure, described in Chapter 9, “General Printer Mainte-
nance”.
• Run test prints.
Has the problem been resolved?
No: Continue.
Yes: Loose connectors or contamination 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, charge corona, developer unit, and toner cartridge
been replaced recently?
No: Continue.
Yes: Go to #6 in this TAG.
4
Replace the photoconductor unit and charge corona.
• Run test prints.
Has the problem been resolved?
No: Reinstall original photoconductor unit and charge corona and continue.
Yes: The photoconductor unit was at fault. Turn to TAG 002: Check & Problem Resolution.
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