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C255C (bizhub 554e/454e)
Contents
| Trouble type | Black TCR sensor adjustment failure |
| Trouble code | C255C |
| Rank | B |
| Detection timing | TCR sensor automatic adjustment does not function properly, failing to adjust to an appropriate value. |
| Trouble isolation | – |
| Relevant electrical parts | • Developing unit • Toner bottle motor (M10) • Toner supply motor/K (M6) • Front side board (FRB) • Printer control board (PRCB) |
(2)Procedure
| Step | Action | Control signal | Location of electrical components |
| 1 | Reinstall developing unit | – | – |
| 2 | Check the connector between developing unit-FRB CN13 for proper connection and correct as necessary. | – | – |
| 3 | Check the connector between FRB CN1, CN3-PRCB CN7, CN9 for proper connection and correct as necessary. | – | – |
| 4 | M10 operation check | PRCB CN14-1 to 4 | 18-C |
| 5 | M6 operation check | PRCB CN14-5 to 8 | 17 to 18-C |
| 6 | Replace the developing unitDeveloper 554e/454e (Part# A2XN03D) | – | – |
| 7 | Replace FRBFRB (Part# A61FH00500) | – | – |
| 8 | Replace PRCBPRCB (Part# 554e A61DH00101 454e A61EH00101) | – | – |
- Link to the wiring diagram (N.1. bizhub 554e/454e)
- Link to the layout drawings for related parts by each trouble code (S.61. C255C)
Document Information ID D0001134353 Revise ID R000003
Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.
K.3.7.6 (Link to the Field Service Manual)