2 Check the connector of M23 for proper drive coupling, and correct as necessary. Remedy: When FS-526+SD-508 is installed: 1 Check the motor and sensor connectors for proper connection, and correct as necessary.When FS-527+SD-509 is installed: Leading edge stopper motor (M20) Leading edge stopper home sensor (PS45) SD drive board (SDDB) FS control board (FSCB) Causes: When FS-526+SD-508 is installed: Leading edge stopper motor (M22) Leading edge stopper home sensor (PS32) SD drive board (SDDB) FS control board (FSCB).The leading edge stopper home sensor (PS45) is turned neither ON nor OFF even after the set period of time has elapsed after the leading edge stopper motor (M20) is turned ON.The leading edge stopper home sensor (PS32) is turned neither ON nor OFF even after the set period of time has elapsed after the leading edge stopper motor (M22) is turned ON.Description: Center-staple lead edge stopper motor malfunction.3 PS33 I/O check, sensor check SDDB CN403-17 (ON) SD-508 C-10 4 M25 operation check SDDB CN405-4 to 10 SD-508 C-7 5 Change M25 - 6 SDDB ICP6 conduction check - 7 Change SDDB - 8 Change FSCB 2 Check the connector of M25 for proper drive coupling, and correct as necessary.

Remedy: 1 Check the motor and sensor connectors for proper connection, and correct as necessary.Causes: Clincher motor (M25) Stapler home sensor (PS33) SD drive board (SDDB) FS control board (FSCB).The stapler home sensor (PS33) is not turned ON even after the set period of time has elapsed while the clincher motor (M25) is energized.Description: Center-staple clinch roller motor malfunction.3 PS33 I/O check, sensor check SDDB CN403-17 (ON) SD-508 C-10 4 M24 operation check SDDB CN406-1 to 2 SD-508 K-9 to 10 5 Change M24 - 6 SDDB ICP7 conduction check - 7 Change SDDB - 8 Change FSCB 2 Check the connector of M24 for proper drive coupling, and correct as necessary. Causes: Staple motor (M24) Stapler home sensor (PS33) SD drive board (SDDB) FS control board (FSCB).The stapler home sensor (PS33) is turned neither ON nor OFF even after the set period of time has elapsed after the staple motor (M24) is turned ON.Description: Center-staple head roller motor malfunction.3 Change stapler unit - 4 M14 operation check - 5 Change M14 - 6 FSCB ICP10 conduction check - 7 FSCB ICP11 conduction check - 8 Change FSCB 2 Check the connector of M14 for proper drive coupling, and correct as necessary. Causes: 2 staples stapler motor (M14) Stapler unit FS control board (FSCB).The home sensor in the staple unit does not turn ON even after the set period of time has elapsed after the side-staple 2 staples stapler motor (M14) turned ON.Description: Side-staple stapler motor drive malfunction.

Konica minolta bizhub c452 staples