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C1131 (bizhub 750i)

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Trouble typeC1131: Folding guide motor drive malfunction (When FS-540+ZU-609 or FS-540SD+ZU-609 is installed)
RankB
Trouble detection condition-The chopper home sensor (PS501) is not turned OFF (unblocked) after the set period of time has elapsed after the folding claw drive starts from the home position.

-The chopper home sensor (PS501) is not turned ON (blocked) after the set period of time has elapsed after the folding guide motor (M501) is energized when the folding claw returned to the home position.

-The folding claw does not reach the specified position within the set period of time.
Trouble isolationZ fold
Relevant electrical parts-Folding guide motor (M501)
-Chopper home sensor (PS501)
-ZU drive board (ZUDB)

Procedure

  1. Check the connector between M501-ZUDB CN6 for proper connection and correct as necessary.
  2. Check the connector of M501 for proper drive coupling and correct as necessary.
  3. Check the connector between PS501-ZUDB CN5 for proper connection and correct as necessary.
  4. PS501 I/O check, sensor check
    • Control signal: ZUDB CN5-9 (ON)
    • Location of electrical component: ZU-609 4-B
  5. M501 operation check
    • Control signal: ZUDB CN6-9 to 12
    • Location of electrical component: ZU-609 2-B
  6. Replace M501. (Part# A63GR70000)
  7. Replace ZUDB. (Part# A63GH00100)

(Link to the Field Service Manual)

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