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C2255, C2256 (bizhub C750i)
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Contents
Trouble type | C2255: Developing motor failure to turn C2256: Developing motor turning at abnormal timing |
Rank | B |
Trouble detection condition | C2255: The control circuit detects motor failure to turn while the motor is turning. C2256: The control circuit detects motor turning while the motor remains stationary. |
Trouble isolation | – |
Relevant electrical parts | -Developing motor (M27) -CPU board (CPUB) -Base board (BASEB) |
Procedure
- Check the connector between M27-BASEB CN19E for proper connection and correct as necessary.
- Check the connector of M27 for proper drive coupling and correct as necessary.
- Check CPUB for proper installation and correct as necessary.
- M27 load check
- Check code: 50
- Multi code: 1, 4, 5
- Control signal: BASEB CN19EB-6 to 10
- Location of electrical component: 2-C
- Replace M27. (Part# AA2JM11000)
- Replace CPUB. (Part# ACKNH02P03)
- Replace BASEB. (Part# ACKNH02101)