HP C30 - Page 208

TAG 801: Prints Light or Light With Carrier Particles
3-154 Troubleshooting Analysis Guide (TAGs) June 1999
15 Turn the printer off and unplug the power cord.
• Disconnect J/P41, J/P24, and J/P23.
• Check the following for continuity:
P41-30 to J24-4,
P41-38 to J23-2,
P41-43 to J25-5,
P41-44 to J25-2,
P41-47 to J25-3,
P41-48 to J25-6,
P41-49 to J25-4, and
P41-50 to J25-1.
Is there continuity on all?
No: Repair or replace the connectors or wiring that do not have continuity, then turn to TAG
002: Check & Problem Resolution.
Yes: Continue.
16 Reconnect J/P23, J/P41, and J/P24.
• Reinstall the developer unit.
• Power-on-reset the printer.
• Check TP4-30 for +24 Vdc for one minute.
Is the voltage +24 Vdc for the first minute after power-on-reset?
No: Replace the high voltage unit, then turn to TAG 002: Check & Problem Resolution.
Yes: Continue.
17 Run test prints.
• Check TP4-30 for 0 Vdc while running the prints.
Does the voltage change to 0 Vdc?
No: Replace the PCL board, then turn to TAG 002: Check & Problem Resolution.
Yes: Continue.
18 Is a meter with a high voltage probe available?
No: Go to #24 in this TAG.
Yes: Continue.
19 Power-on-reset the printer.
• Run test prints.
• Using a high voltage probe, check J/P25-7 for the proper voltage, as outlined in Chapter 9,
“General Printer Maintenance”.
Is the voltage correct?
No: Replace the high voltage unit, then turn to TAG 002: Check & Problem Resolution.
Yes: Go to #25 in this TAG.