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C2151 (bizhub C759/C659)

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Trouble typeC2151: Transfer roller pressure welding alienation
RankB
Trouble detection condition-The 2nd transfer pressure sensor (PS50) is not turned OFF (unblock) (retracting) even after the lapse of a given period of time after the 2nd transfer pressure motor (M3) has started rotating during the 2nd image transfer roller is retracting.
-The 2nd transfer pressure sensor (PS50) is not turned ON (block) (pressuring) even after the lapse of a given period of time after the 2nd transfer pressure motor (M3) has started rotating during the 2nd image transfer roller is pressuring.
Trouble isolation
Relevant electrical parts-2nd transfer pressure motor (M3)
-2nd transfer pressure sensor (PS50)
-Paper feed/transport drive board (PFTDB)

 Procedure

  1. Check the connector between M3-relay CN271B-PFTDB CN8 for proper connection and correct as necessary.
  2. Check the connector of M3 for proper drive coupling and correct as necessary.
  3. Check the connector between PS50-relay CN271A-PFTDB CN2 for proper connection and correct as necessary.
  4. PS50 I/O check, sensor check
    • Control signal: PFTDB CN2-9 (ON)
    • Location of electrical component: 5-P
  5. M3 load check
    • Check code: 24
    • Multi code: 4, 5
    • Control signal: PFTDB CN8-1 to 2
    • Location of electrical component: 6-P
  6. Replace M3. (Part# A0P0R75400)
  7. PFTDB F17 conduction check
  8. Replace PFTDB. (Part# A795H00200)

L.3.9.1 (Link to the Field Service Manual)

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