CD004, CD00F, CD020 (bizhub C750i)

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Trouble typeCD004: Storage access error (connection failure)

CD00F: Storage data transfer error

CD020: Storage verify error
RankC
Trouble detection conditionCD004: Unable to communicate between the storage and CPU board (CPUB).

CD00F: Data transfer from the storage is faulty.

CD020: The data abnormality is detected by the storage verify check.
Trouble isolation–
Relevant electrical parts-Storage board (STRGB)
-CPU board (CPUB)
-Base board (BASEB)

Procedure

  1. Check STRGB for proper installation and correct as necessary.
  2. Check CPUB for proper installation and correct as necessary.
  3. Replace STRGB. (Part# AA2JM72700)
  4. Replace CPUB. (Part# ACKNH02P03)
  5. Replace BASEB. (Part# ACKNH02101)

(Link to the Field Service Manual)