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C5610 (bizhub 4750i/4050i)

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Trouble typeC5610: PH LD drive communication error
RankC
Trouble detection condition– LD drive write data and read data disagree with each other a predetermined number of consecutive times.

– Different PH unit is installed.
Trouble isolation–
Relevant electrical parts-PH unit
-CPU board (CPUB)
-Base board (BASEB)

Procedure

  1. Reboot the machine.
  2. Check the connector between the PH unit-BASEB CN13 for proper connection and correct as necessary.
  3. Check CPUB for proper installation and correct as necessary.
  4. Replace the PH unit. (Part# ACT9R70900)
  5. Replace CPUB. (Part# ACT9H01003)
  6. Replace BASEB.
    4750i (Part# ACT9H02013)
    4050i (Part# ACT9H02002)

(Link to the Field Service Manual)

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