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C9401, C9402 (bizhub C750i)
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Contents
Trouble type | C9401: Exposure LED lighting failure C9402: Exposure LED lighting abnormally |
Rank | B |
Trouble detection condition | C9401: The output from the CCD sensor is a predetermined value or less during CCD sensor gain adjustment. C9402: The average output value of the CCD sensor with the scanner at its standby position is a predetermined value or more at the end of a scan job. |
Trouble isolation | Scanner |
Relevant electrical parts | -LED exposure unit -Flat cable (LED exposure unit) -CCD unitScanner drive board (SCDB) -CPU board (CPUB) -Base board (BASEB) |
Procedure
- Correct the harness connection between SCDB CN3-LU201 if faulty.
- Check the connector between SCDB CN2-BASEB CN6E for proper connection and correct as necessary.
- Check the connector between CCDB CN2-BASEB CN6 for proper connection and correct as necessary.
- Check CPUB for proper installation and correct as necessary.
- Replace the LED exposure unit. (Part# AA7NM31200)
- Replace the CCD unit. (Part# AA7NR72500)
- SCDB ICP2 conduction check
- Replace SCDB. (Part# AA7NH01A00)
- Replace CPUB. (Part# ACKNH02P03)
- Replace BASEB. (Part# ACKNH02101)