Xerox WorkCentre Pro 423 - Outputting Reports and Lists

WorkCentre Pro 423/428 2-114 CHAPTER 2 TROUBLESHOOTING
03/02 Level 2 Troubleshooting
U4-3 FUSER Abnormal (BSD 10.2)
Initial Action
l Check the drawer connector (P/J12) between the FUSER
ASSY and main unit for a broken or bent pin, foreign matter,
or burnt material.
Turn the power off and remove the FUSER ASSY. Measure the
resistance between drawer connectors P12-A4 and P12-A5. Is
the resistance 100k or more?
YN
Check between the drawer connectors J12 and MCU/SW
PWB J402 for an open wire or poor contact. If there is no
problem, replace the MCU/SW PWB. (PL7.2)
Replace the FUSER (PL6.1).
U4-4 FUSER Abnormal (BSD 10.2)
Initial Action
l Check the drawer connector (P/J12) between the FUSER
ASSY and main unit for a broken or bent pin, foreign matter,
or burn.
Cheat the FRONT DOOR INTERLOCK SW and turn the power
on.
Does the HEATER ROD light?
YN
Remove the FUSER ASSY. Measure the resistance
between drawer connectors P12-1 and P12-4. Is the
resistance 10 or more?
YN
Replace the FUSER (PL6.1)
Return the FUSER ASSY and turn the power on. Is the
Voltage 100VAC between drawer connectors J12-4(+) and
J12-1(-)?
YN
Cheat the R/H INTERLOCK SW. Is the voltage
100VAC between drawer connector J12-4(+) and J12-
1(-)?
YN
Is the voltage 100 VAC between the POWER
UNIT J10-A1(+) and J10-A3(-)?
YN
Is a CHOKE COIL or cheat connector
installed to POWER UNIT P5? (100V
model)
YN
Install a CHOKE COIL or cheat
connector.
Is the voltage 100 VAC between the
POWER UNIT FS-11(+) and FS-12(-)?
YN
Perform AC FIP.
ABCDE
ABCDE
Is the voltage 0 VDC between POWER
UNIT J523-2(+) and GND(-) ?
YN
Replace the POWER UNIT.(PL7.1)
Is the voltage 0 VDC between the
MCU/SW PWB J403-3(+) and GND(-) ?
YN
Check between MCU/SW PWB J403-
3 and POWER UNIT J523-2 for an
open wire or poor contact.
Replace the MCU/ SW PWB.(PL7.2)
Check between the POWER UNIT and R/H
INTERLOCK SW for an open wire or poor
connection. If there is no problem, replacethe
R/H INTERLOCK SW.(PL2.3)
Check the actuator at the R/H INTERLOCK SW.
Check the drawer connector (P/J12) for bad contact.
Remove the FUSER ASSY. Measure the resistance between
drawer connectors P12-A4 and P12-A5.
Is the resistance less than 20k?
YN
Replace the FUSER (PL6.1).
Check between the FUSER drawer connector and MCU/SW
PWB for an open wire or poor contact. There is no problem?
YN
Repair an open wire or poor contact.
Check the NVM values by Chain20 Func100 and Chain20
Func101.
Are the values between 0 and 16?
YN
Change the NVM values. The initial values are 8.
Replace the MCU/SW PWB (PL7.2)