HP C30 - Page 147

TAG 099: +24 Vdc Power Shorted
June 1999 Troubleshooting Analysis Guide (TAGs) 3-93
8 Turn the printer off.
• Reconnect J/P12.
• Disconnect J/P41.
• Turn the printer on.
• Check J/P8-11 for +24 Vdc.
Is the voltage +24 Vdc?
No: Replace the PCL board, then turn to TAG 002: Check & Problem Resolution.
Yes: Continue.
9 Turn the printer off.
• Reconnect J/P41.
• Disconnect J/P23.
• Turn the printer on.
• Check J/P8-11 for +24 Vdc.
Is the voltage +24 Vdc?
No: Continue.
Yes: Replace the high voltage unit, then turn to TAG 002: Check & Problem Resolution.
10 Turn off the printer and unplug the power cord.
• Disconnect J/P41.
• Check P41-35 to P23-5 for continuity to ground.
Is there continuity?
No: You have failed to isolate the problem. Return to the beginning of this TAG.
Yes: Repair or replace the connectors or wiring from P41-35 to P23-5, then turn to TAG 002:
Check & Problem Resolution.
11 Turn the printer off.
• Reconnect J/P11.
• Disconnect J/P91.
• Turn the printer on.
• Check J/P8-13 for +24 Vdc.
Is the voltage +24 Vdc?
No: Go to #21 in this TAG.
Yes: Continue.