C1144 (bizhub C759/C659)

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

Contents

Trouble type	C1144: Pre-eject drive motor drive malfunction
Rank	B
Trouble detection condition	<When FS-536 or FS-536SD is installed> -The pre-eject home sensor (PS21) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the pre-eject drive motor (M9) is turned ON. -The pre-eject away sensor (PS22) is not turned ON (blocked) or OFF (unblocked) even after the set period of time has elapsed after the pre-eject drive motor (M9) is turned ON.
	<When FS-537 or FS-537SD is installed> The trail edge stopper home sensor (PS31) is not turned OFF (unblocked) or ON (blocked) even after the set period of time has elapsed after the pre-eject drive motor (M2) is turned ON.
Trouble isolation	–
Relevant electrical parts	<When FS-536 or FS-536SD is installed> -Pre-eject drive motor (M9) -Pre-eject home sensor (PS21) -Pre-eject away sensor (PS22) -FS control board (FSCB)
	<When FS-537 or FS-537SD is installed> -Pre-eject drive motor (M2) -Trail edge stopper home sensor (PS31) -FS control board (FSCB)

 Procedure

 When FS-536 or FS-536SD is installed

1. Check the connector between M9-relay CN7<A>-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 CN7<B>-FSCB J12 for proper connection, and correct as necessary.
4. Check the connector between PS22-relay CN8-relay CN7<B>-FSCB J12 for proper connection, and correct as necessary.
5. PS21 I/O check, sensor check
   • Control signal: FSCB J12-6 (ON)
   • Location of electrical component: FS-536/FS-536SD 7-C
6. PS22 I/O check, sensor check
   • Control signal: FSCB J12-9 (ON)
   • Location of electrical component: FS-536/FS-536SD 7-C
7. M9 operation check
   • Control signal: FSCB J13-3 to 4
   • Location of electrical component: FS-536/FS-536SD 9-C
8. Replace M9. (Part# A87GPP1500)
9. Replace FSCB. (Part# A87GPP0V00)

 When FS-537 or FS-537SD is installed

1. Check the connector between M2-relay CN1<A>-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 CN1<B>-FSCB J22 for proper connection, and correct as necessary.
4. PS31 I/O check, sensor check
   • Control signal: FSCB J22<B>-13
   • Location of electrical component: FS-537/FS-537SD 3-D
5. M2 operation check
   • Control signal: FSCB J22<A>-3 to 4
   • Location of electrical component: FS-537/FS-537SD 1-D
6. Replace M2. (Part# A87HPPAF00)
7. Replace FSCB. (Part# A87HPP9M01)

L.3.8.26 (Link to the Field Service Manual)