• Code: C11B2
• Description: Staple Drive Failure
  - See FS-530/PU-501/OT-602 service manual.
• Remedy:

• Code: C11B5
• Description: Saddle Staple 1 Drive Failure
  - See SD-507 service manual.
• Remedy:

• Code: C11B6
• Description: Saddle Staple 2 Drive Failure
  - See SD-507 service manual.
• Remedy:

• Code: C11C0
• Description: Punch Cam Motor Unit Failure
  - See FS-530/PU-501/OT-602 service manual.
• Remedy:

• Code: C11D0
• Description: Crease Motor Drive Failure
  - See SD-507 service manual.
• Remedy:

• Code: C2211
• Description: IU Motor Failure
  - The IU Motor Lock signal remains set to H for a set period of time while the IU Motor is turning.
  - The IU Motor Lock signal remains set to L for a set period of time while the IU Motor remains stopped.
• Remedy: 1 Check the M2 connector for proper connection and correct as necessary. 2 Check the M2 for proper drive coupling, and correct as necessary. 3 Check the PWB-A connector for proper connection and correct as necessary. 4 M2 operation check PWB-A PJ28A-11 (REM) M-4 5 Change PWB-A. 6 Change PU1.

• Code: C2351
• Description: Toner Suction Fan Motor Failure
  - The Toner Suction Fan Motor Lock signal remains set to H for a set period of time while the Toner Suction Fan Motor is turning.
  - The Toner Suction Fan Motor Lock signal remains set to L for a set period of time while the Toner Suction Fan Motor remains stopped.
• Remedy: 1 Check the M11 connector for proper connection and correct as necessary. 2 Check the fan for possible overload, and correct as necessary. 3 Check the PWB-A connector for proper connection and correct as necessary. 4 M11 operation check PWB-A PJ5A-13 (REM) D-14 5 Change PWB-A. 6 Change PU1.

• Code: C2431
• Description: IU Fuse Blowing Failure
  - The fuse is not blown even after the lapse of a predetermined period of time.
• Remedy: 1 Check the UN2 connector for proper connection and correct as necessary. 2 Remove the Developing Unit from the IU, and then replace UN2. 3 Run F8. 4 Change PWB-A. 5 Change PU1N.