C4501 (bizhub C3320i)

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Trouble typeC4501: Laser malfunction
RankB
Trouble detection condition-SOS signal is not detected even after the lapse of a given period of time after starting the laser output.
-SOS signal is not detected for a given period of time during printing or IDC sensor adjustment.
Trouble isolation–
Relevant electrical parts-PH unit
-CPU board (CPUB)
-Base board (BASEB)

Procedure

  1. Check the connector between the PH unit-BASEB CN13 for proper connection and correct as necessary.
  2. Check CPUB for proper installation and correct as necessary.
  3. Replace the PH unit. (Part# AAJTR70100)
  4. Replace CPUB. (Part# AAJRH01005)
  5. Replace BASEB. (Part# A93EH02007)

L.3.9.4 (Link to the Field Service Manual)