Xerox WorkCentre Pro 423 - Troubleshooting Printer Issues; When Problems Occur

03/02 Level 2 Troubleshooting
WorkCentre Pro 423/428 2-135 CHAPTER 2 TROUBLESHOOTING
FINISHER LVPS +24VDC POWER FIP (BSD 12.1)
Is the voltage +24 VDC between the FINISHER CONT PWB
CN1-1(+) and GND(-)?
YN
Is the voltage +24 VDC between the FINISHER LVPS
CN51-1(+) and GND(-)?
YN
Is +24VDC WIRE normal (no short circuit with the
FRAME)?
YN
Repair the short circuit.
Is the voltage 100 VAC between the FINISHER LVPS
CN1-1(+) and CN1-3(-)?
YN
Is the voltage 100 VAC between the FINISHER
relay connector J13-1(+) and J13-2(-)?
YN
Is the voltage 100 VAC between the
POWER UNIT J3-1(+) and J3-3(-)?
YN
Replace the POWER UNIT. (PL7.1)
Check between the POWER UNIT and
FINISHER relay connector for an open
wireor poor contact.
Check between the FINISHER relay connector
and FINISHER LVPS for an open wireor poor
contact.
Replace the FINISHER LVPS. (PL13.16)
Check between the FINISHER LVPS and FINISHER CONT
PWB for an open wire or poor contact.
Check between the FINISHER CONT PWB and the
corresponding part for an open wire or poor contact.
FINISHER LVPS +5VDC POWER FIP (BSD 12.1)
Is the voltage +5 VDC between the FINISHER CONT PWB
CN17-1(+) and GND(-)?
YN
Is the voltage +24 VDC between the FINISHER CONT
PWB CN1-1(+) and GND(-)?
YN
Perform +24VDC POWER FIP.
Is +5 VDC WIRE normal (no short circuit with the FRAME)?
YN
Repair the short circuit.
Replace the FINISHER CONT PWB. (PL13.16)
Check between the FINISHER CONT PWB and the
corresponding part for an open wire and poor contact.
PAPER JAM IN EXIT GUIDE FIP (BSD10.5)
Open the right-hand cover, check for obstructions and remove
jammed paper.
Close the cover and delete the current print job.
Go to C/E diagnostics and run Chain 8, Function 60. Do the exit
rollers rotate?
YN
Check the connections between the exit motor and the exit
PWB. Are all the connectors correctly seated?
YN
Connect all loose connectors and re-run the test.
Measure the continuity and voltages between the exit
motor and the exit PWB. Are all the voltages correct?
YN
Replace the following parts, in this order:
• Wiring harnesses
• Exit motor PWB (PL7.1)
• MCU PWB (PL7.2)
Replace the exit motor (PL2.4).
Check the OCT assembly for worn and damaged parts.