• Code: C0630
• Description: DMA problem • DMA transmission of compressed, decompressed, rotated, relocated or blanked-out image data does not complete within the specified period of time.
• Causes: Defective scanner main PCB.
• Remedy: Replace the scanner main PCB and check for correct operation.

• Code: C0640
• Description: Hard disk problem • The hard disk cannot be accessed.
• Causes: Defective scanner main PCB. Defective memory copy board PCB. Defective hard disk.
• Remedy: Replace the scanner main PCB and check for correct operation. Replace the memory copy board PCB and check for correct operation . Replace the hard disk device and check for correct operation.

• Code: C0810
• Description: SCC microcomputer status problem • Abnormal SCC microcomputer status has been detected.
• Causes: Defective scanner main PCB.
• Remedy: Replace the scanner main PCB and check for correct operation.

• Code: C0820
• Description: Fax control PCB CG ROM checksum error • A checksum error occurred with the CG ROM data of the fax control PCB.
• Causes: Defective fax control PCB.
• Remedy: Replace the fax control PCB and check for correct operation.

• Code: C0830
• Description: Fax control PCB flash program area checksum error • A checksum error occurred with the program of the fax control PCB.
• Causes: Defective fax control PCB.
• Remedy: Replace the fax control PCB and check for correct operation.

• Code: C0840
• Description: RTC problem • The time is judged to go back based on the comparison of the RTC time and the current time or five years or more have passed.
• Causes: Defective scanner main PCB.
• Remedy: Replace the scanner main PCB and check for correct operation.

• Code: C0860
• Description: Fax control PCB software switch checksum error • A checksum error occurred with the software switch value of the fax control PCB.
• Causes: Defective fax control PCB.
• Remedy: Replace the fax control PCB and check for correct operation.

• Code: C0870
• Description: Graphics data transfer problem • High-capacity data transfer between the fax control PCB and the main PCB of the machine was not normally performed even if the data transfer was retried the specified times.
• Causes: Poor contact in the connector terminals. Defective fax control PCB or scanner main PCB.
• Remedy: Check the connection of connector YC1 on the fax control PCB and YC1123 on the scanner main PCB, and the continuity across the connector terminals. Repair or replace if necessary. Replace the fax control PCB or scanner main PCB and check for correct operation.