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C2554 (bizhub C3320i)

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Trouble typeC2554: Abnormally high toner density detected magenta TCR sensor
RankB
Trouble detection conditionTC ratio in the imaging unit, which is determined by toner replenishing amount control mechanism, is a predetermined value or more for a given number of times consecutively.
Trouble isolation–
Relevant electrical parts-Imaging unit/C,M,Y,K
-CPU board (CPUB)
-Base board (BASEB)

Procedure

  1. Reinstall the imaging unit.
  2. Check the connector between the imaging unit/C-relay CN5-EXCB CN14E for proper connection and correct as necessary. (C2552)
  3. Check the connector between the imaging unit/M-relay CN8-EXCB CN14E for proper connection and correct as necessary. (C2554)
  4. Check the connector between the imaging unit/Y-relay CN7-EXCB CN14E for proper connection and correct as necessary. (C2556)
  5. Check the connector between the imaging unit/K-relay CN6-EXCB CN14E for proper connection and correct as necessary. (C2558)
  6. Check CPUB for proper installation and correct as necessary.
  7. Replace the corresponding imaging unit. (Part# AAJV0CE)
  8. Replace CPUB. (Part# AAJRH01005)
  9. Replace BASEB. (Part# A93EH02007)

L.3.7.6 (Link to the Field Service Manual)

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