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C6751 (bizhub C3320i)

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Trouble typeC6751: Gain adjustment failure (front side)
RankB
Trouble detection conditionAt the gain adjustment, adjustment is not completed even after the sequence retry exceeds the predetermined number of times.
Trouble isolationScanner
Relevant electrical parts-CIS module (IR CIS)
-CIS relay board (CISRYB)
-CPU board (CPUB)
-Base board (BASEB)

Procedure

  1. Check the connector between IR CIS-CISRYB CN1 for proper connection and correct as necessary.
  2. Check the connector between CISRYB CN2-BASEB CN5 for proper connection and correct as necessary.
  3. Check CPUB for proper installation and correct as necessary.
  4. Check for possible extraneous light and correct as necessary.
  5. Replace IR CIS. (Part# AAJPR70500)
  6. Replace CISRYB. (Part# AAJPH10100)
  7. Replace CPUB. (Part# AAJRH01005)
  8. Replace BASEB. (Part# A93EH02007)

L.3.11.5 (Link to the Field Service Manual)

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