Xerox WorkCentre Pro 423 - Page 149

03/02 Level 2 Troubleshooting
WorkCentre Pro 423/428 2-117 CHAPTER 2 TROUBLESHOOTING
If Power OFF/ON does not repair, replace the IIT/IPS
PWB.(PL3.1)
U6-95 Memory Error at POWER ON (BSD 3.1A 3.1C
3.3)
If NVM initialization does not repair the error, replace the
MCU/SW PWB(PL7.2), IIT/IPS PWB(PL3.1), and DIMM
PWB(PL7.2) in this order.
U7-31 Inter-system Communication FAIL (BSD
3.1B)
Check between the MCU/SW PWB and IIT/IPS PWB and
between the IIT/IPS PWB and UI PWB for an open wire or poor
contact.
If no problem is found, replace the MCU/SW PWB(PL7.2), UI
PWB(PLXX.X), and IIT/IPS PWB(PL3.1) in this order.
U7-32 Inter-system Communication FAIL (BSD
3.1B)
Check between the MCU/SW PWB and IIT/IPS PWB and
between the IIT/IPS PWB and UI PWB for an open wire or poor
contact.
If no problem is found, replace the MCU/SW PWB(PL7.2), UI
PWB(PLXX.X), and IIT/IPS PWB(PL3.1) in this order.
U7-33 Inter-system Communication FAIL (BSD
3.1B)
Check between the MCU/SW PWB and IIT/IPS PWB and
between the IIT/IPS PWB and UI PWB for an open wire or poor
contact.
If no problem is found, replace the MCU/SW PWB(PL7.2), UI
PWB(PLXX.X), and IIT/IPS PWB(PL3.1) in this order.
U7-34 Inter-system Communication FAIL (BSD
3.1B)
Check between the MCU/SW PWB and IIT/IPS PWB and
between the IIT/IPS PWB and UI PWB for an open wire or poor
contact.
If no problem is found, replace the MCU/SW PWB(PL7.2), UI
PWB(PLXX.X), and IIT/IPS PWB(PL3.1) in this order.
U7-35 Inter-system Communication FAIL (BSD
3.1B)
Check between the MCU/SW PWB and IIT/IPS PWB and
between the IIT/IPS PWB and UI PWB for an open wire or poor
contact.
If no problem is found, replace the MCU/SW PWB(PL7.2), UI
PWB(PLXX.X), and IIT/IPS PWB(PL3.1) in this order.
U7-41 Inter-system Communication FAIL (BSD
3.1A)
Check between the MCU/SW PWB and IIT/IPS PWB for an open
wire or poor contact. If no problem is found, replace the
MCU/SW PWB(PL7.2)and IIT/IPS PWB(PL3.1) in this order.
U7-42 Inter-system Communication FAIL (BSD
3.1A)
Check between the MCU/SW PWB and IIT/IPS PWB for an open
wire or poor contact. If no problem is found, replace the
MCU/SW PWB(PL7.2)and IIT/IPS PWB(PL3.1) in this order.
U7-42 Inter-system Communication FAIL (BSD
3.1A)
Check between the MCU/SW PWB and IIT/IPS PWB for an open
wire or poor contact. If no problem is found, replace the
MCU/SW PWB(PL7.2) and IIT/IPS PWB(PL3.1) in this order.
U7-43 Inter-system Communication FAIL (BSD
3.1A)
Check between the MCU/SW PWB and IIT/IPS PWB for an open
wire or poor contact. If no problem is found, replace the
MCU/SW PWB(PL7.2)and IIT/IPS PWB(PL3.1) in this order.
U7-44 Inter-system Communication FAIL (BSD
3.1A)
Check between the MCU/SW PWB and IIT/IPS PWB for an open
wire or poor contact. If no problem is found, replace the
MCU/SW PWB(PL7.2)and IIT/IPS PWB(PL3.1) in this order.
U7-45 Inter-system Communication FAIL (BSD
3.1A)
Check between the MCU/SW PWB and IIT/IPS PWB for an open
wire or poor contact. If no problem is found, replace the
MCU/SW PWB(PL7.2)and IIT/IPS PWB(PL3.1) in this order.
U8-3 LAMP/CCD Sensor Abnormal (BSD 6.1B 6.2)
Problem factors:
l CCD PWB defect
l IIT/IPS PWB defect
l MCU/SW PWB defect
l EXPOSURE LAMP quantity of light not appropriate
U8-4 LAMP/CCD Sensor Abnormal (BSD 6.1B 6.2)
Problem factors:
l CCD PWB defect
l IIT/IPS PWB defect
l MCU/SW PWB defect
l EXPOSURE LAMP quantily of light not appropriate
U8-5 LAMP/CCD Sensor Abnormal (BSD 6.1B 6.2)
Problem factors:
l CCD PWB defect
l IIT/IPS PWB defect
l MCU/SW PWB defect
l EXPOSURE LAMP quantily of light not appropriate
U8-6 LAMP/CCD Sensor Abnormal (BSD 6.1B 6.2)
Problem factors:
l CCD PWB defect
l IIT/IPS PWB defect
l MCU/SW PWB defect
l EXPOSURE LAMP quantily of light not appropriate
l Reflector plate dirty or condensed
U9-1 MCU/SW PWB Failure (BSD 3.1C)
If Power OFF/ON does not rsolve the problem, replace the
MCU/SW PWB (PL7.2).