C255C (bizhub 287/227)

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Contents

Trouble type	C255C: Black TCR sensor adjustment failure
Rank	B
Trouble detection condition	TCR sensor automatic adjustment does not function properly, failing to adjust to an appropriate value.
Trouble isolation	–
Relevant electrical parts	-Developing unit/K -Toner cartridge motor (M10) -Toner supply motor/K (M6) -MFP board (MFPB)

 Procedure

1. Reinstall developing unit/K.
2. Check the connector between the developing unit-relay CN15-MFPB CN17E for proper connection and correct as necessary.
3. M10 operation check
   • Control signal: MFPB CN22E-5 to 8
   • Location of electrical component: 20-J
4. M6 operation check
   • Control signal: MFPB CN22E-1 to 4
   • Location of electrical component: 20-J
5. Replace the developing unit/K. (Part# A7Y003D)
6. Replace MFPB. (Part# A7AHH0201D)

NOTICE

• Link to the wiring diagram (bizhub 367/287/227)

K.3.9.6 (Link to the Field Service Manual)