TAG 808: Prints Overtoned/Dark Vertical Streaks
Error Code: | 808 |
Possible Causes: | Clogged cleaner |
| Contaminated toner/carrier mix |
Possible Defects: | Cleaner unit |
| Photoconductor unit |
| Main charger |
| High voltage unit |
| Power control #2 board |
| PCL board |
| Connectors or wiring |
| Developer unit |
Overtoned print and dark print problems are very similar. If this TAG does not resolve the problem, go to TAG 811: Background/Residual Images/Dark Prints.
1 Turn the printer off and unplug the power cord.
•Verify that J/P23, J/P12, J/P25, and J/P41 are connected properly.
•Perform the
•
•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, main charger, cleaner unit, and developer unit with toner cartridge been replaced recently?
No: Continue.
Yes: Go to #7 in this TAG.
4 Replace the photoconductor unit and main charger.
•Run test prints.
Has the problem been resolved?
No: Reinstall the original photoconductor unit and main charger, then continue.
Yes: Run at least 200 test prints to detone the printer’s engine, then turn to TAG 002: Check & Problem Resolution.
Troubleshooting Analysis Guide (TAGs) |