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C6756 (bizhub C750i)

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Trouble typeC6756: CCD power-supply voltage malfunction
RankC
Trouble detection conditionPower is not supplied to CCD after the lapse of a given period of time after the main power switch or power key is turned ON or the machine recovers from the sleep mode.
Trouble isolation–
Relevant electrical parts-CCD unit
-Scanner drive board (SCDB)
-DC power supply (DCPU)
-CPU board (CPUB)
-Base board (BASEB)

Procedure

  1. Correct the harness connection between CCDB CN1-SCDB CN5 if faulty.
  2. Correct the harness connection between SCDB CN1-BASEB CN7E if faulty.
  3. Correct the harness connection between BASEB CN1E, CN14E-DCPU CN5, CN6 if faulty.
  4. Check CPUB for proper installation and correct as necessary.
  5. Replace the CCD unit. (Part# AA7NR72500)
  6. SCDB ICP1 conduction check
  7. Replace SCDB. (Part# AA7NH01A00)
  8. Replace CPUB. (Part# ACKNH02P03)
  9. Replace BASEB. (Part# ACKNH02101)
  10. Replace DCPU. (Part# AA7NR71600)

(Link to the Field Service Manual)

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