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C3922 (bizhub 958/808)

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Trouble typeC3922:Fusing sensor wire breaks detection (Edge of the heating roller)Fusing unit for incorrect marketing area (The fusing unit for incorrect marketing area is installed)
RankA
Trouble detection
condition		bizhub 958, bizhub PRO 958:
• C3922: After a predetermined period of time after the warm-up stage is started, the fusing belt temperature sensor/3 (TEMS3) voltage does not decrease by predetermined steps (temperature rise) within a predetermined period of time.

Trouble isolation–
bizhub 808/758:
• C3922: After a predetermined period of time after the warm-up stage is started, the heating roller temperature sensor/3 (TEMS3) voltage does not decrease by predetermined steps (temperature rise) within a predetermined period of time.

Relevant
electrical parts
• Fusing unit
• C3922: Fusing belt temperature sensor/3 (TEMS3) (bizhub 958, bizhub PRO 958)
• C3922: Heating roller temperature sensor/3 (TEMS3) (bizhub 808/758)
• IH power supply unit (IHPU)
• Noise filter (NF1)
• MFP board (MFPB)

 Procedure

  1. Check the fusing unit for correct installation (whether it is secured in position).
  2. Check the open/close operation of the upper right door.
  3. Check the fusing unit-MFPB CN30E for proper connection and correct or change as necessary.
  4. Check the connector between TEMS1, TEMS2, TEMS3-relay CN512-MFPB CN29E for proper connection and correct as necessary.
  5. Check the connector between NF1 CN2-IHPU CN1 for proper connection and correct as necessary.
  6. Check the connector between IHPU CN8-MFPB CN18E for proper connection and correct as necessary.
  7. Replace the fusing unit. ( 958)A796R71422 )( 808)A795R72922 )
  8. Replace IHPU. (958)( A796M40B00 )(808)( A8KNM40A02 )
  9. MFPB IC80E conduction check
  10. Replace MFPB. ( A796H02003)
  11. Replace NF1. (958)( A796M40H00 )(808)( A795M40J00 )

Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.

(Link to the Field Service Manual) K.3.9.18.

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