HP C30 - Page 85

TAG 021: Paper Jam/Misfeed in /Lower Cassette Area
June 1999 Troubleshooting Analysis Guide (TAGs) 3-31
P40-25 to P57-1
P40-12 to P57-3
Is there ground?
No: Repair or replace the connectors or wiring from:
P40-25 to J/P58-1 to P57-1,
P40-16 to J/P58-2 to P57-2, or
P40-12 to J/P58-3 to P57-3.
Then turn to TAG 002: Check & Problem Resolution.
Yes: Replace the paper timing guide. If this does not correct the problem, replace the PCL
board. Then turn to TAG 002: Check & Problem Resolution.
10 Turn off the printer.
• Open the back cover and install an interlock by-pass tool.
• Remove the paper feed cover to expose the lower paper pick-up assembly.
• Run diagnostic test 006, testing the lower pick-up roller clutch.
• Check TP3-8 for a voltage change from +24 Vdc to 0 Vdc.
Does the voltage change from +24 Vdc to 0 Vdc?
No: Continue.
Yes: Go to #12 in this TAG.
11 Turn the printer off and unplug the power cord.
• Disconnect J/P40 and J/P69.
• Check P40-8 to J69-2 and P40-10 to J69-1 for continuity.
Is there continuity?
No: Repair or replace the connectors or wiring from:P40-8 to J69-2 or P40-10 to J69-1. Then
turn to TAG 002: Check & Problem Resolution.
Yes: Replace the lower pick-up roller assembly, then turn to TAG 002: Check & Problem Res-
olution.
12 Run diagnostic test 006, testing the lower feed roller clutch.
• Check TP3-5 for a voltage change from +24 Vdc to 0 Vdc.
Does the voltage change from +24 Vdc to 0 Vdc?
No: Continue.
Yes: Go to #14 in this TAG.
Warning
To avoid the risk of injury, use extreme caution as gears
and belts are exposed