TAG 031: Toner Patch Reference Level Too Low
Error Code: | 031 |
Possible Causes: Contamination of the toner patch sensor or printhead lens
Possible Defects: Photoconductor unit
Connectors or wiring
PCL board
Developer unit
1 Turn the printer off and unplug the power cord.
•Perform the
•Clean the toner patch sensor on the developer unit.
•Clean the printhead lens.
•Run at least 200 test prints to detone the printer’s engine.
Has the problem been resolved?
No: Contamination was at fault. Turn to TAG 002: Check & Problem Resolution.
Yes: Continue.
2 Check the voltages, as described 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 and developer units been replaced recently?
No: Continue.
Yes: Go to #6 in this TAG.
4 Replace the photoconductor unit.
•Run 200+ test prints to reduce toner concentration in the developer unit.
Has the problem been resolved?
No: Reinstall the original photoconductor unit and continue.
Yes: The photoconductor was at fault; turn to TAG 002: Check & Problem Resolution.
5 Replace the developer unit.
•Run test prints.
Has the problem been resolved?
No: Reinstall the original developer unit and continue.
Yes: Turn to TAG 002: Check & Problem Resolution. If the problem reappears, the toner/car- rier mix may be old or contaminated.
Troubleshooting Analysis Guide (TAGs) |