Xerox WorkCentre Pro 423 Service Manual

WorkCentre Pro 423/428 2-110 CHAPTER 2 TROUBLESHOOTING
03/02 Level 2 Troubleshooting
2.3.4 IIT/IOT Status Code FIP
U1-1 MAIN MOTOR Failure (BSD 4.1)
Close the R/H Cover and FRONT Cover. Enter Diag mode and
Execute Chain4 Func1. Does the MAIN MOTOR rotate?
YN
Is the voltage between MAIN MOTOR J205-1(+) and
GND(-) +24VDC?
YN
Is the voltage between MCU/SW PWB J460-8(+) and
GND(-) +24VDC?
YN
Is the voltage between MCU/SW PWB J458-4(+)
and GND(-) +24VDC?
YN
Is the voltage between MCU/SW PWB
J458-3(+) and GND(-) +24VDC?
YN
Is the voltage between MCU/SW
PWB J458-5(+) & GND(-) +24VDC?
YN
Is the voltage between MCU/SW
PWB J458-6(+) and GND(-)
+24VDC?
YN
Replace the MCU/SW
PWB. (PL7.2)
Check between MCU/SW PWB
and R/H INTERLOCK SW for an
open or poor contact. If there is
no problem, replace the R/H
INTERLOCK SW. (PL2.3)
Replace the MCU/SW PWB.(PL7.2)
Check between MCU/SW PWB and
FRONT INTERLOCK SW for an open /poor
contact. If there is no problem, replace
FRONT INTERLOCK SW. (PL2.3)
Replace the MCU/SW PWB. (PL7.2)
Check between MCU/SW PWB and MAIN MOTOR
for an open wire or poor contact.
AB
AB
Is the voltage between MAIN MOTOR J205-6(+) and
GND(-) +5VDC?
YN
Is the voltage between MCU/SW PWB J460-3(+) and
GND(-) +5VDC?
YN
Replace the MCU/SW PWB. (PL7.2)
Check between MCU/SW PWB and MAIN MOTOR
for an open wire or poor contact.
Execute Chain4 Func1. Is the voltage between MAIN
MOTOR J205-8(+) and GND(-) +2.5VDC?
YN
Execute Chain4 Func1. Is the voltage MCU/SW PWB
J460-1(+) and GND(-) +2.5VDC?
YN
Replace the MCU/SW PWB. (PL7.2)
Check between MCU/SW PWB and MAIN MOTOR
for an open wire or poor contact.
Replace the MAIN MOTOR. (PL1.1)
Execute Chain4 Func1. Is the voltage between MAIN MOTOR
J205-7(+) and GND(-) +2.5VDC?
YN
Check between MCU/SW PWB and MAIN MOTOR for an
open wire or poor contact. They are good.
YN
Repair an open wire or poor contact
Replace the MAIN MOTOR. (PL1.1)
Execute Chain4 Func1. Is the voltage between MCU/SW
PWBJ460-2(+) and GND(-) +2.5VDC?
YN
Check between MCU/SW PWB and MAIN MOTOR for an
open wire or poor contact.
Replace the MCU/SW PWB. (PL7.2)
U1-2 Fuser Fan failure (BSD 10.1)
Enter Diag mode and execute Chain 4 - Func 2.
Does the FUSER FAN rotate at high speed?
YN
Execute Chain4 Func2.
Is the voltage between POWER UNIT J204-1(+) and
GND(-) +24VDC?
YN
Execute Chain4 Func2. POWER UNIT
Is the voltage between J524-1(+) and GND(-) 0VDC?
YN
Check between POWER UNIT J524-1 and
MCU/SW PWB J403-8 for an open wire or
poor contact. If they are good, replace
the MCU /SW PWB. (PL7.2)
Replace the POWER UNIT. (PL7.1)
Check between FUSER FAN and POWER UNIT for an
open wire or poor contact.
If they are good, replace FUSER FAN. (PL5.2)
Execute Chain4 Func2. Is the voltage between POWER UNIT
J204-2(+) and GND(-) +3.3VDC?
YN
Execute Chain4 Func2. Is the voltage between
POWER UNIT J524-4(+) and GND(-) +3.3VDC?
YN
Execute Chain4 Func2. Is the voltage between
MCU/SW PWB J403-6(+) and GND(-) +3.3VDC?
YN
Replace the MCU/SW PWB. (PL7.2)
Check between the MCU/SW PWB and POWER
UNIT for an open wire or poor contact.
Replace the POWER UNIT. (PL7.1)
Replace the FUSER FAN. (PL5.2)

Xerox WorkCentre Pro 423 Specifications

General

Brand	Xerox
Model	WorkCentre Pro 423
Category	All in One Printer
Language	English