C6755 (bizhub C3320i)

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Trouble typeC6755: Gain adjustment failure (back 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-DF CIS module (DF CIS)
-DF CIS relay board (DFCISRYB)
-CPU board (CPUB)
-Base board (BASEB)

Procedure

  1. Check the connector between DF CIS-DFCISRYB CN1 for proper connection and correct as necessary.
  2. Check the connector between DFCISRYB 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. Clean the back side reading glass and the shading sheet if dirty.
  6. Replace the DF CIS module assy. (Part# AAJPR70800)
  7. Replace DFCISRYB. (Part# AAJPH10100)
  8. Replace CPUB. (Part# AAJRH01005)
  9. Replace BASEB. (Part# A93EH02007)

L.3.11.8 (Link to the Field Service Manual)