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3-28 Troubleshooting Analysis Guide (TAGs)
9
Turn the printer off and unplug the power cord.
• Disconnect J/P40 and J/P57.
• Check the following for continuity:.
P40-16 to P57-2
P40-25 to P57-1
P40-12 to P57-3
Is there continuity on all?
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 resolve the problem, replace the PCL
board. Then turn to TAG 002: Check & Problem Resolution.
10
Turn the printer off.
• Open the back cover and install an interlock by-pass tool.
• Remove the paper feed cover to expose the upper paper pick roller assembly.
• Run diagnostic test 006, testing the upper pick-up roller clutch.
• Check TP3-9 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 off the printer and unplug the power cord.
• Disconnect J/P40 and J/P68.
• Check P40-9 to J68-2 and P40-11 to J68-1 for continuity.
Is there continuity?
No: Repair or replace the connectors or wiring from P40-9 to J68-2 or P40-11 to J68-1. 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.
12
Run diagnostic test 006, testing the upper feed roller clutch.
• Check TP3-6 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