C6753 (C4751i)

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ByEric Ditges
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Contents

Trouble typeC6753: ASIC clock input error (back side)
RankC
Trouble detection conditionWhen starting the machine, verification on reading and writing the predetermined value for CPU (image processing section) on CPU board (CPUB) was conducted, and verification failure was detected.
Trouble isolationScanner
Relevant electrical partsDF CIS module (DF CIS)CPU board (CPUB)Base board (BASEB)

Procedure

  1. Check the connector between DF CIS-BASEB CN5 for proper connection and correct as necessary.
  2. Check CPUB for proper installation and correct as necessary.
  3. Replace the DF CIS module assy.
  4. Replace CPUB.
  5. Replace BASEB.

(Link to the Field Service Manual)