C2564 (bizhub 958/808)

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Trouble typeC2564: Black TCR sensor failure
RankB
Trouble detection condition• The TCR sensor input is 0.
• This detection is used for detecting disconnection of TCR sensor connector.
Trouble isolation–
Relevant electrical parts• Developing unit
• PH relay board (PHRYB)
• MFP board (MFPB)

 Procedure

  1. Reinstall developing unit.
  2. Check the connector between the developing unit-relay CN214-PHRYB CN6 for proper connection and correct as necessary.
  3. Replace the developing unit. (Part# A8H403D)
  4. PHRYB PS1 conduction check.
  5. Replace PHRYB. (Part# A796H00300)
  6. Replace MFPB. (Part# A796H02003)

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

K.3.8.16 (Link to the Field Service Manual)