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C2564 (bizhub 750i)

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Trouble typeC2564: Black TCR sensor failure
RankB
Trouble detection condition-Alarm signals for TCR sensor is detected more than the predetermined number of times.

-This detection is used for detecting disconnection of TCR sensor connector.
Trouble isolation–
Relevant electrical parts-Developing unit/K
-Expansion control board (EXCB)
-CPU board (CPUB)
-Base board (BASEB)

Procedure

  1. Reinstall the developing unit.
  2. Check the connector between the developing unit/K-relay CN252-relay CN25-EXCB CN4EX for proper connection and correct as necessary.
  3. Check the connector between EXCB CN1EX-BASEB CN11E for proper connection and correct as necessary.
  4. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
  5. Check CPUB for proper installation and correct as necessary.
  6. Replace the corresponding developing unit. (Part# ACV803D)
  7. Replace EXCB. (Part# AC74H00501)
  8. Replace CPUB. (Part# ACV7H02P02)
  9. Replace BASEB. (Part# ACV7H02101)

(Link to the Field Service Manual)

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