• Code: F6-80
• Description: FAX control PWB communication trouble (Protocol)
  Communication trouble between MCU and FAX control PWB (Protocol error)
• Causes: FAX control PWB connector disconnection Defective harness between FAX control PWB and MCU PWB Motherboard connector pin breakage FAX control PWB ROM error/Data error
• Remedy: Check connector/harness of FAX control PWB and MCU PWB. Check the grounding of the copier. Check FAX control PWB ROM.

• Code: F6-81
• Description: FAX control PWB communication trouble (Parity)
  Communication trouble between MCU and FAX control PWB (Parity error)
• Causes: FAX control PWB connector disconnection Defective harness between FAX control PWB and MCU PWB Motherboard connector pin breakage FAX control PWB ROM error/Data error
• Remedy: Check connector/harness of FAX control PWB and MCU PWB. Check the grounding of the copier. Check FAX control PWB ROM.

• Code: F6-82
• Description: FAX control PWB communication trouble (Over-run)
  Communication trouble between MCU and FAX control PWB (Overrun error)
• Causes: FAX control PWB connector disconnection Defective harness between FAX control PWB and MCU PWB Motherboard connector pin breakage FAX control PWB ROM error/Data error
• Remedy: Check connector/harness of FAX control PWB and MCU PWB. Check the grounding of the copier. Check FAX control PWB ROM.

• Code: F6-84
• Description: FAX control PWB communication trouble (Framing)
  Communication trouble between MCU and FAX control PWB (Framing error)
• Causes: FAX control PWB connector disconnection Defective harness between FAX control PWB and MCU PWB Motherboard connector pin breakage FAX control PWB ROM error/Data error
• Remedy: Check connector/harness of FAX control PWB and MCU PWB. Check the grounding of the copier. Check FAX control PWB ROM.

• Code: F6-88
• Description: FAX control PWB communication trouble (Timeout)
  Communication trouble between MCU and FAX control PWB (Timeout error)
• Causes: FAX control PWB connector disconnection Defective harness between FAX control PWB and MCU PWB Motherboard connector pin breakage FAX control PWB ROM error/Data error
• Remedy: Check connector/harness of FAX control PWB and MCU PWB. Check the grounding of the copier. Check FAX control PWB ROM.

• Code: F6-99
• Description: FAX control PWB destination error
  The machine destination setup does not coincide with the FAX board destination setup.
• Causes: The machine destination setup (Sim 26-6) does not coincide with the FAX board setup
• Remedy: Check the variety of FAX LIU PWB. Check the machine destination setup (Sim 22-6) and FAX country code (Soft SW table).

• Code: F9-00
• Description: MCU-PRT communication trouble
  Communication establishment error/ framing/parity/protocol error
• Causes: Printer PWB connector disconnection Harness trouble between the printer PWB and the MCU PWB Motherboard connector pin breakage Printer PWB ROM trouble/Data disturbance
• Remedy: Check the connectors and harness of the printer PWB and MCU PWB. Check the grounding of the copier. Check ROM on printer PWB.

• Code: F9-10
• Description: Printer PWB trouble
  Communication trouble between MCU and printer PWB
• Causes: Printer PWB connector disconnection Harness trouble between the printer PWB and the MCU PWB Motherboard connector pin breakage Printer PWB ROM trouble/Data disturbance
• Remedy: Check the connectors and harness of the printer PWB and MCU PWB. Check the grounding of the copier. Check ROM on printer PWB.