C6902, C6903, C6912, C6913 (C4751i)

Posted
ByEric Ditges
You are here:

Contents

Trouble typeC6902: Bus check NG1-1C6903: Bus check NG1-2C6912: Bus check NG2-1C6913: Bus check NG2-2
RankC
Trouble detection conditionC6902, C6903: When bus check (front side) detects an error.C6912, C6913: When bus check (back side) detects an error.
Trouble isolation–
Relevant electrical partsCIS module (IR CIS)DF CIS module (DF CIS)CPU board (CPUB)Base board (BASEB)

Procedure

  1. Check the connector between IR CIS-BASEB CN6 for proper connection and correct as necessary.
  2. Check the connector between DF CIS-BASEB CN5 for proper connection and correct as necessary.
  3. Check CPUB for proper installation and correct as necessary.
  4. Replace CPUB.
  5. Replace BASEB.

(Link to the Field Service Manual)