• Code: 8510
• Description: Bulk stacker compatibility error
  • The engine controller PWB (KP-992) does not recognize compatibility of the bulk stacker ST-30.
• Causes: The ROM version of ST-30 bulk stacker main board is not compatible for this printer. Defective ST-30 bulk stacker board. Defective engine controller PWB (KP-992).
• Remedy: Replace the ROM of ST-30 bulk stacker main board for this printer. Replace the ST-30 bulk stacker main board. See bulk stacker’s service manual. Replace the engine controller PWB (KP- 992).

• Code: 8900
• Description: ROM version false setting
  • A version of the optional eject equipment does not fit.
• Causes: The optional eject equipment which does not conform to this printer is installed.
• Remedy: Install optional eject equipment conforming to this printer.

• Code: F000
• Description: Main controller PWB error
  • The operation breakdown occurs between main controller PWB (KP- 991) and operation panel PWB (KP- 805) during 30 seconds.
• Causes: Defective main controller PWB (KP-991). Defective operator panel PWB (KP- 805). Defective mainengine controllers relay PWB (KP- 993). Defective engine controller PWB (KP-992). Defective harness (2BM2851) between engine controller PWB (KP-991) and operator panel PWB (KP-805), or poor contact of the connector terminals.
• Remedy: Replace the main controller PWB (KP-991). Replace the operator panel PWB (KP-805). Replace the main-engine controllers relay PWB (KP-993). Replace the engine controller PWB (KP- 992). Check the continuity of the harness (2BM2851). Check the insertion of connectors.

• Code: F010
• Description: System DIMM checksum error
  • Checksum for the system DIMM PWB (KP-689) that holds the system program is wrong.
• Causes: Defective system DIMM PWB (KP- 689). Defective main controller PWB (KP-991).
• Remedy: Replace the system DIMM PWB (KP-689). Replace the main controller PWB (KP-991).

• Code: F020
• Description: Memory check error
  • Access to the expanding memory (DIMM) or RAM on the main controller PWB (KP-991) is unobtainable.
• Causes: Defective main controller PWB (KP-991). Defective expansion memory (DIMM).
• Remedy: Replace the main controller PWB (KP-991). 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 (KP-991).
• Remedy: Replace the main controller PWB (KP-991).

• Code: F040
• Description: Main - Engine controller PWBs communication error
  • The communication breakdown occurred between main controller PWB (KP-991) and engine controller PWB (KP-992) during 30 seconds.
• Causes: Defective engine controller PWB (KP-992). Defective main controller PWB (KP-991).
• Remedy: Replace the engine controller PWB (KP- 992). Replace the main controller PWB (KP-991).

• Code: F050
• Description: Engine checksum error
  • Check result is not correct about CPU of engine controller PWB (KP-992).
• Causes: Defective engine controller PWB (KP-992).
• Remedy: Replace the engine controller PWB (KP- 992).