• Code: E7 05
• Description: CCD black level which is read while the copy lamp is off is abnormal.
• Causes: Flat cable installation failure CCD unit abnormality MCU PWB abnormality
• Remedy: Check flat cable installation to the CCD unit. CCD unit check MCU PWB check

• Code: F6 00
• Description: Communication trouble between MCU and FAX (MCU detection). Communication establishment error, framing error, parity error, protocol error
• Causes: Bad connection of FAX control PWB connector 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 grounding of the machine. Check FAX control PWB ROM.

• Code: F6 10
• Description: Communication trouble between MCU and FAX control WPB
• Causes: Bad connection of FAX control PWB connector Defective harness between FAX control PWB and MCU PWB Motherboard connector pin breakage FAX control PWB ROM error/Data error
• Remedy: Check connector/harness between FAX control PWB and MCU PWB. Check grounding of the machine. Check FAX control PWB ROM.

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

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

• Code: F6 82
• Description: Communication trouble between MCU and FAX control PWB (Overrun error)
• Causes: Bad connection of FAX control PWB connector Defective harness between FAX control PWB and MCU PWB Motherboard connector pin breakage FAX control PWB ROM error/Data error
• Remedy: Check connector/harness between FAX control PWB and MCU PWB. Check grounding of the machine. Check FAX control PWB ROM.

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

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