• Code: 8470
• Description: Booklet stitcher punch dust sensor problem
• Causes: A problem is detected with the punch dust sensor
• Remedy: See the booklet stitcher service manual.

• Code: 8480
• Description: Booklet stitcher broken punch power source wire problem
• Causes: A broken punch power source wire problem is detected.
• Remedy: See the booklet stitcher service manual.

• Code: F0
• Description: Main controller PWB error
  • The operation breakdown occurs between main controller PWB and operation panel PWB during 30 seconds.
• Causes: Defective main controller PWB. Defective operator panel PWB. Defective mainengine controllers relay PWB. Defective engine controller PWB . Defective harness between engine controller PWB and operator panel PWB, or poor contact of the connector terminals.
• Remedy: Replace the main controller PWB. Replace the operator panel PWB. Replace the engine controller PWB. Check the continuity of the harness. Check the insertion of connectors.

• Code: F010
• Description: System DIMM checksum error
  • Checksum for the system DIMM PWB that holds the system program is wrong.
• Causes: Defective system DIMM PWB. Defective main controller PWB.
• Remedy: Replace the system DIMM PWB. Replace the main controller PWB.

• Code: F020
• Description: Memory check error
  • Access to the expanding memory (DIMM) or RAM on the main controller PWB is unobtainable.
• Causes: Defective main controller PWB. Defective expansion memory (DIMM).n t
• Remedy: Replace the main controller PWB. Replace the expansion memory (DIMM).

• Code: F030
• Description: Main controller PWB system error
  • The error concerned with the system occurred except self diagnostic codes F0 (F010) conditions.
• Causes: Defective main controller PWB.
• Remedy: Replace the main controller PWB.

• Code: F040
• Description: Main - Engine controller PWBs communication error
  • The communication breakdown occurred between main controller PWB and engine controller PWB during 30 seconds.
• Causes: Defective engine controller PWB. Defective main controller PWB.
• Remedy: Replace the engine controller PWB. Replace the main controller PWB.

• Code: F080
• Description: Flash ROM checksum error
  • Check result is not correct about flash ROM checksum of engine controller PWB.
• Causes: Defective engine controller PWB.
• Remedy: Replace the engine controller PWB.