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C40A2, C40A3, C40A4, C40A5, C40A6, C40C3, C40C5 (bizhub 750i)
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Contents
| Trouble type | C40A2: Mechanical controller PF communication data error C40A3: Mechanical controller PF transmission timeout C40A4: Mechanical controller PF communication pulse error C40A5: QSPI communication clock switching error C40A6: Mechanical controller ASIC communication error C40C3: CTL PF transmission timeout 1 C40C5: CTL PF transmission timeout 2 |
| Rank | C |
| Trouble detection condition | A CPU communication error is detected. |
| Trouble isolation | – |
| Relevant electrical parts | -CPU board (CPUB) -Base board (BASEB) |
Procedure
- Turn OFF the main power switch and unplug the power cord. Connect the power cord after 15 sec. or more, and turn ON the main power switch.
- Check CPUB for proper installation and correct as necessary.
- Rewrite the firmware.
- Replace CPUB. (Part# ACV7H02P02)
- BASEB F8E conduction check
- Replace BASEB. (Part# ACV7H02101)