C4501 (bizhub C4000i/C3300i)

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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. (bizhub C4000i Part# AAJRR72000 / bizhub C3300i Part# AAJTR70100)
  4. Replace CPUB. (Part# AAJRH01005)
  5. Replace BASEB. (Part# AAJRH02005)

Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.

L.3.9.4 (Link to the Field Service Manual)