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C1144 (bizhub 950i/850i)

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When FS-539 or FS-539SD is installed

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Trouble typeC1144: Pre-eject drive motor drive malfunction (When FS-539 or FS-539SD is installed)
RankB
Trouble detection condition– The pre-eject home sensor (PS21) is not turned OFF (unblocked) after the set period of time has elapsed after the trailing edge stopper drive starts from the home position.Or, the trailing edge stopper does not reach the specified position within the set period of time.

– The pre-eject home sensor (PS21) is not turned ON (blocked) after the set period of time has elapsed after the pre-eject drive motor (M9) is energized when the trailing edge stopper returned to the home position.
Trouble isolation–
Relevant electrical parts– Pre-eject drive motor (M9)
– Pre-eject home sensor (PS21)
– FS control board (FSCB)

Procedure

  1. Check the connector between M9-relay CN7A-FSCB J13 for proper connection and correct as necessary.
  2. Check the connector of M9 for proper drive coupling and correct as necessary.
  3. Check the connector between PS21-relay CN8-relay CN7B-FSCB J12 for proper connection and correct as necessary.
  4. PS21 I/O check, sensor check
    • Control signal: FSCB J12-6 (ON)
    • Location of electrical component: FS-539/FS-539SD 8-C
  5. M9 operation check
    • Control signal: FSCB J13-3 to 4
    • Location of electrical component: FS-539/FS-539SD 17-C
  6. Replace M9.
  7. FSCB F8 conduction check
  8. Replace FSCB.

 When FS-540 or FS-540SD is installed

Contents

Trouble typeC1144: Pre-eject drive motor drive malfunction (When FS-540 or FS-540SD is installed)
RankB
Trouble detection condition– The trailing edge stopper home sensor (PS31) is not turned OFF after the set period of time has elapsed after the trailing edge stopper drive starts from the home position.Or, the trailing edge stopper does not reach the specified position within the set period of time.

– The trailing edge stopper home sensor (PS31) is not turned ON after the set period of time has elapsed after the pre-eject drive motor (M2) is energized when the trailing edge stopper returned to the home position.
Trouble isolation–
Relevant electrical parts– Pre-eject drive motor (M2)
– Trailing edge stopper home sensor (PS31)
– FS control board (FSCB)

Procedure

  1. Check the connector between M2-relay CN1A-FSCB J22 for proper connection and correct as necessary.
  2. Check the connector of M2 for proper drive coupling and correct as necessary.
  3. Check the connector between PS31-relay CN2-relay CN1B-FSCB J22 for proper connection and correct as necessary.
  4. PS31 I/O check, sensor check
    • Control signal: FSCB J22<B>-13 (ON)
    • Location of electrical component: FS-540/FS-540SD 3-D
  5. M2 operation check
    • Control signal: FSCB J22<A>-3 to 4
    • Location of electrical component: FS-540/FS-540SD 1-D
  6. Replace M2.
  7. Replace FSCB.

(Link to the Field Service Manual)

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