• Code: CD300 ... CD370
• Description: CD3##: Nonvolatile data error CD370: Nonvolatile data multiple errors. CD3##: Abnormality is detected by the abnormal check of each nonvolatile data. CD370: Multiple errors (over 5) are detected by the abnormal check of each nonvolatile data.
• Causes:
• Remedy: NOTE • Trouble code [C-D370] will be displayed when multiple errors (over 5) of nonvolatile data are detected, which can be restored with one restoration command. • Data backup will be automatically performed every hour. Backup can also be performed manually with the following setting. [Service Mode] -> [Enhanced Security] -> [Memory Data Backup] 1. When a trouble caused by nonvolatile data error occurs, the screen below appears. 2. Select [Yes]. 3. The screen will be shifted to the data restoration screen to perform data restoration. NOTE • When the restoration is performed in a short time, data restoration screen may not be displayed. 4. Check the message which indicates that the data restoration was successfully conducted. Turn OFF the main power switch and turn it ON again more than 10 seconds after. NOTE • In case it failed to restore data, return to the trouble code screen.

• Code: CD390
• Description: Nonvolatile data checksum error. C-D390 code is normally shown when the MFP board (MFPB) is replaced with a new one.
• Causes:
• Remedy: 1. Wait until “Recover Data” appears. (MFP will reboot maximum 2 times by itself, it may take 5 minutes.) Touch the “Recover Data” button and follow the instructions that appear on the control panel to restore (backup) data.

• Code: CD3A0
• Description: Counter error. The total counter values provided by the MFP board (MFPB) and the eMMC board (eMMC) are different.
• Causes: • MFP board (MFPB) • eMMC board (eMMC)
• Remedy: 1. If this error occurs temporarily due to the use of the board removed from another machine, reinstall the original board. 2. Replace the current MFPB with a new one. 3. Replace the current eMMC with a new one.

• Code: CD401 ... CD413
• Description: • CD401: NACK command incorrect • CD402: ACK command incorrect • CD403: Checksum error • CD404: Receiving packet incorrect • CD405: Receiving packet analysis error • CD406: ACK receiving timeout • CD407: Retransmission timeout • CD411: Touch panel board error • CD412: Touch panel type mismatch • CD413: Electrostatic touch panel operation mode error. When abnormality is found in the communication of controller.
• Causes: MFP board (MFPB)
• Remedy: 1. Check whether there is a strong electromagnetic noise source near the main body. 2. Check the connectors on MFPB for proper connection and correct as necessary. 3. Replace MFPB.

• Code: CD601, CD602, CD603
• Description: Trouble related to security
• Causes:
• Remedy: 1. Turn OFF the main power switch, wait for 10 sec. or more, and turn ON the main power switch. If the above actions do not solve the problem, contact KM.

• Code: CD701, CD702, CD703
• Description: • CD701: Mechanical controller flash ROM writing error • CD702: Mechanical controller flash ROM device error • CD703: FW download communication fault. CD701: A mechanical controller flash ROM writing sequence is interrupted in its mid-operation due to, for example, power being shut off. CD702: An erase error or other device fault occurs during mechanical controller flash ROM writing. CD703: Irregular data is received during FW downloading. • Places are changed in the order of write completion pulses. • A write completion pulse is received for a memory for which binary writing is not permitted. • Final checksum mismatch in FW download • Two-minute timeout (no response from CTL, the number of transfer data items less than the specified)
• Causes: MFP board (MFPB)
• Remedy: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. Replace MFPB.

• Code: CD704
• Description: Finisher Flash ROM device error (When FS-533, FS-534, FS-534SD or JS-506 is installed). An erase error or other device fault occurs during the finisher flash ROM writing.
• Causes: <When FS-533, FS-534 or FS-534SD is installed> • FS control board (FSCB) <When JS-506 is installed> • JS control board (JSCB)
• Remedy: (a) When FS-533, FS-534 or FS-534SD is installed 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. Replace FSCB. (FS-533/FS-534/FS-534SD) (b) When JS-506 is installed 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. Replace JSCB.

• Code: CD705, CD706
• Description: • CD705: Mechanical controller sub-CPU flash ROM device error • CD706: Mechanical controller sub-CPU flash ROM error. • CD705: An erase error or other device fault occurs during mechanical controller sub-CPU flash ROM writing. • CD706: A data error is determined to exist in the mechanical controller sub-CPU flash ROM during starting.
• Causes: MFP board (MFPB)
• Remedy: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. Replace MFPB.