HP C30 - TAG 810: Uneven Density or Dark Areas on Prints

TAG 810: Uneven Density or Dark Areas on Prints
June 1999 Troubleshooting Analysis Guide (TAGs) 3-179
TAG 810: Uneven Density or Dark Areas on Prints
Error Code: 810
Possible Defects: Photoconductor unit
Charge corona
Developer unit
Cleaner unit
1 Perform the every-call cleaning procedure, described in Chapter 9, “General Printer Maintenance”.
• Turn the printer on.
• Run test prints.
Has the problem been resolved?
No: Continue.
Yes: Contamination was 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, cleaner unit and developer unit with
new toner cartridge been replaced recently?
No: Continue.
Yes: Go to TAG 811: Background/Residual Images/Dark Prints.
4 Replace the photoconductor unit and charge corona.
• Run test prints.
Has the problem been resolved?
No: Reinstall the original photoconductor unit and charge corona and continue.
Yes: Turn to TAG 002: Check & Problem Resolution.
5 Replace the cleaner unit.
• Run test prints.
Has the problem been resolved?
No: Reinstall the original cleaner unit and continue.
Yes: Turn to TAG 002: Check & Problem Resolution.