C2255, C2256 (C4751i)

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ByEric Ditges
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Contents

Trouble typeC2255: Color developing motor failure to turnC2256: Color developing motor turning at abnormal timing
RankB
Trouble detection conditionC2255: 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 partsColor developing motor (M10)CPU board (CPUB)Base board (BASEB)

Procedure

  1. Check the connector between M10-BASEB CN24E for proper connection and correct as necessary.
  2. Check the connector of M10 for proper drive coupling and correct as necessary.
  3. Check CPUB for proper installation and correct as necessary.
  4. M10 load check
    • Check code: 50
    • Multi code: 1, 2, 3
    • Control signal: BASEB CN24E-6 to 10
    • Location of electrical component: 3-K
  5. Replace M10.
  6. Replace CPUB.
  7. BASEB F21E conduction check
  8. Replace BASEB.

(Link to the Field Service Manual)