HP C30 - TAG 050: Transfer Corona Circuit Shorted

TAG 050: Transfer Corona Circuit Shorted
3-62 Troubleshooting Analysis Guide (TAGs) June 1999
TAG 050: Transfer Corona Circuit Shorted
Error Code: 050
Possible Defects: Transfer corona
High voltage unit
Connectors or wiring
PCL board
Upper paper guide assembly
1 Turn the printer off and unplug the power cord.
• Verify that J/P23, J/P41 and the transfer corona high voltage unit lead are connected properly.
• Power-on-reset the printer.
• Run test prints.
Is error code 050 displayed?
No: A loose connector was at fault. Turn to TAG 002: Check & Problem Resolution.
Yes: Continue.
2 Turn the printer off and unplug the power cord.
• Remove and clean the transfer corona housing and contacts.
• Check between the two terminals on the back of the transfer corona for continuity.
Is there continuity?
No: Continue.
Yes: Repair or replace the transfer corona, then turn to TAG 002: Check & Problem Resolu-
tion.
3 Reinstall the transfer corona.
• Power-on-reset the printer.
• Run test prints.
Is error code 050 displayed?
No: A dirty transfer corona was at fault. Turn to TAG 002: Check & Problem Resolution.
Yes: Continue.
4 Turn the printer off and unplug the power cord.
• Disconnect the transfer corona lead from the high voltage unit.
• Check the transfer corona high voltage unit lead for continuity to ground.
Is there continuity to ground?
No: Continue.
Yes: Repair or replace the upper paper guide assembly or transfer corona, then turn to TAG
002: Check & Problem Resolution.