C8402 (bizhub 658e/558e/458e)

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Trouble typeC8402: Multi feed detection board failure (When UK-501 is installed)
RankC
Trouble detection condition• The AD value went below the predetermined the HI side threshold for two consecutive times.
• The AD value went above the predetermined the LOW side threshold for two consecutive times.
Trouble isolationDF
Relevant electrical parts• Multi feed detection board/1 (transmitter) (MFDB/1)
• Multi feed detection board/2 (receiver) (MFDB/2)
• Sensor control board (SCB)
• DF control board (DFCB)

 Procedure

  1. Remove the film stuck on the window of the lower guide assembly.
  2. Use the adjustment sheet for double feed detection kit (UK-501), and select [ADF] -> [Multi-Feed DetectionAdj.].
  3. Use the misdetected paper, and select [ADF] -> [Multi-Feed DetectionAdj.].
  4. Check the connector between MFDB/1-SCB CN104 for proper connection and correct as necessary.
  5. Check the connector between MFDB/2-SCB CN103 for proper connection and correct as necessary.
  6. Check the connector between SCB CN101-DFCB CN8 for proper connection and correct as necessary.
  7. MFDB/1 load check
    • Check code: 60
    • Multi code: 161
    • Control signal: SCB CN104
    • Location of electrical component: DF 11-L
  8. MFDB/2 load check
    • Check code: 60
    • Multi code: 161
    • Control signal: SCB CN103
    • Location of electrical component: DF 10-J
  9. Replace SCB. (Part# A796H01A00)
  10. DFCB ICP11 conduction check.
  11. Replace DFCB. (Part# A782H0010A)

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

L.3.20.7 (Link to the Field Service Manual)