C5605, C5606 (bizhub 650i/550i/450i)

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Trouble typeC5605: Engine communication data error

C5606: Engine transmission timeout
RankC
Trouble detection conditionA communication error is detected between CPUs.
Trouble isolation–
Relevant electrical parts-CPU board (CPUB)
-Base board (BASEB)

Procedure

  1. Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
  2. Check CPUB for proper installation and correct as necessary.
  3. Rewrite the firmware.
  4. Replace CPUB.
    650i/550i (Part# AC74H02P03)
    450i (Part# AC76H02P02)
  5. Replace BASEB. (Part# AC74H02101)

(Link to the Field Service Manual)