HP C30 - Page 150

TAG 099: +24 Vdc Power Shorted
3-96 Troubleshooting Analysis Guide (TAGs) June 1999
20 Turn the printer off.
• Reconnect J/P67.
• Disconnect J/P68.
• Turn the printer on.
• Check J/P8-13 for +24 Vdc.
Is the voltage +24 Vdc?
No: Repair or replace the connectors or wiring from:
P40-10 to J69-1,
P40-11 to J65-1,
P40-11 to J66-1,
P40-11 to J67-1, or
P40-11 to J 68-1;
then turn to TAG 002: Check & Problem Resolution.
Yes: Replace the upper pick-up roller assembly, then turn to TAG 002: Check & Problem Res-
olution.
21 Turn the printer off and unplug the power cord.
• Disconnect J/P8, J/P11, and J/P91.
• Check P8-11 to P11-1 and P8-13 to P91-1 for continuity to ground.
Is there continuity?
No: Replace the DC power supply unit, then turn to TAG 002: Check & Problem Resolution.
Yes: Repair or replace the connectors or wiring from:
P8-13 to P91-1, or
P8-11 to P11-1;
then turn to TAG 002: Check & Problem Resolution.
22 Turn the printer off.
• Reconnect J/P330.
• Disconnect J/P323.
• Turn the printer on.
• Check J/P330-1 for +24 Vdc.
Is the voltage +24 Vdc?
No: Go to #27 in this TAG.
Yes: Continue.
23 Turn the printer off.
• Reconnect J/P323.
• Disconnect J/P305.
• Turn the printer on.
• Check J/P330-1 for +24 Vdc.
Is the voltage +24 Vdc?
No: Go to #26 in this TAG.
Yes: Continue.