• Code: C-8002
• Description: Reception error between the main body and DF. Checksum error or SRGA reception error is detected twice in succession while in the reception in serial communication. 18-4
• Causes: DF control board (DFCB: DF-615) Overall control board (OACB: main body)
• Remedy: 1 Check the connector connection and the wiring between IDFCB and OACB, and repair it if any abnormality. - 2 Replace DFCB - 3 Replace OACB.

• Code: C-8003
• Description: Initial communication error between the main body and DF. When the main power switch (SW1) is ON, there is no response to the initial communication request from the main body to the DF even after a specified period of time elapses. 18-4
• Causes: DF control board (DFCB: DF-615) Overall control board (OACB: main body)
• Remedy: 1 Check the connector connection and the wiring between IDFCB and OACB, and repair it if any abnormality. - 2 Replace DFCB - 3 Replace OACB.

• Code: C-8201
• Description: Tray up/down motor (M303) abnormality. 18-4
• Causes: Tray up down motor (M303: DF-615) DF control board (DFCB: DF-615)
• Remedy: Check the original tray up/down section, and repair it if any abnormality. - 2 Check the connector connection and the wiring between DFCB and the motor, and repair it if any abnormality. - 3 Check the I/O drive of the motor and the coupling of the gear, and repair/replace it if any abnormality. DF-615: 6-E 4 Replace M303. - 5 Replace DFCB

• Code: C-8301
• Description: Cooling fan /Lt (FM301) abnormality. 18-4
• Causes: Cooling fan /Lt (FM301: DF-615) Cooling fan /Rt (FM302: DF-615) DF control board (DFCB: DF-615)
• Remedy: 1 Check the connector connection and the wiring between DFCB and the fan, and repair it if any abnormality. - 2 Rotate the fan by I/O or hand, and repair/replace it if any abnormality. DF-615: 7-C, 8-G 3 Replace FM301 or FM302. - 4 Replace DFCB

• Code: C-8401
• Description: Original registration sensor /Rt (PS318) abnormality. 18-4
• Causes: Original registration sensor /Lt (PS306: DF-615) Original registration sensor /Rt (PS318: DF-615) DF control board (DFCB: DF-615)
• Remedy: 1 Check the connector connection and the wiring between DFCB and the sensor, and repair it if any abnormality. - 2 Check I/O and the operation of the sensor, and repair/replace it if any abnormality. DF-615: 2-E, 2-D 3 Replace PS306 or PS318. - 4 Replace DFCB

• Code: C-8402
• Description: Original conveyance sensor (PS308) abnormality. 18-4
• Causes: Original conveyance sensor (PS308: DF-615) DF control board (DFCB: DF-615)
• Remedy: 1 Check the connector connection and the wiring between DFCB and the sensor, and repair it if any abnormality. - 2 Check I/O and the operation of the sensor, and repair/replace it if any abnormality. DF-615: 2-G 3 Replace PS308. - 4 Replace DFCB

• Code: C-8403
• Description: Original reverse sensor (PS309) abnormality. 18-4
• Causes: Original reverse sensor (PS309: DF-615) DF control board (DFCB: DF-615)
• Remedy: 1 Check the connector connection and the wiring between DFCB and the sensor, and repair it if any abnormality. - 2 Check I/O and the operation of the sensor, and repair/replace it if any abnormality. DF-615: 3-F 3 Replace PS309. - 4 Replace DFCB

• Code: C-8404
• Description: Non-volatile memory error 18-4
• Causes: DF control board (DFCB: DF-615)
• Remedy: 1 After turning OFF the sub power switch, turn OFF the main power switch and unplug the power plug. Restart the main body after 10 seconds. - 2 Check the connector connection and the wiring on DFCB, and repair it if any abnormality. - 3 Rewrite the firmware of DF-615. - 4 Replace DFCB