C5610 (bizhub 950i/850i)

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Trouble typeC5610: PH LD drive communication error
RankC
Trouble detection conditionLD drive write data and read data disagree with each other predetermined number of consecutive times.
Trouble isolation–
Relevant electrical parts– PH unit
– PH relay board (PHRYB)
– CPU board (CPUB)
– Base board (BASEB)

Procedure

  1. Reboot the machine.
  2. Check the connector between the PH unit-PHRYB CN8 for proper connection and correct as necessary.
  3. Check the connector between PHRYB CN1-BASEB CN6E for proper connection and correct as necessary.
  4. Check CPUB for proper installation and correct as necessary.
  5. Replace the PH unit.
  6. Replace PHRYB.
  7. Replace CPUB.
  8. Replace BASEB.

(Link to the Field Service Manual)