• Code: C837
• Description: Booklet stitcher punch motor problem
• Causes: A problem is detected with the punch motor.
• Remedy: See the booklet stitcher service manual.

• Code: C838
• Description: Booklet stitcher punch shift motor problem
• Causes: A problem is detected with the punch shift motor.
• Remedy: See the booklet stitcher service manual.

• Code: C839
• Description: Booklet stitcher swing motor problem
• Causes: A problem is detected with the swing motor.
• Remedy: See the booklet stitcher service manual.

• Code: C840
• Description: Booklet stitcher backup RAM data problem
• Causes: A backup RAM data error is detected.
• Remedy: See the booklet stitcher service manual.

• Code: C841
• Description: Booklet stitcher punch unit backup RAM data problem
• Causes: An error is detected in the punch unit backup RAM data.
• Remedy: See the booklet stitcher service manual.

• Code: C842
• Description: Booklet stitcher positioning plate motor problem
• Causes: A problem is detected with the saddle positioning plate motor.
• Remedy: See the booklet stitcher service manual.

• Code: C843
• Description: Booklet stitcher folding motor problem
• Causes: A problem is detected with the saddle folding motor.
• Remedy: See the booklet stitcher service manual.

• Code: C844
• Description: Booklet stitcher guide motor problem
• Causes: A problem is detected with the saddle guide motor.
• Remedy: See the booklet stitcher service manual.