• 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 PWB.
• Remedy: Defective scanner main PWB. Replace the scanner main PWB and check for correct operation.

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

• Code: C0700
• Description: Paper feeder EEPROM error 1 (upper of optional 500-sheet paper feeder) • When power is turned on, an error is detected in memory check for the upper of the optional 500-sheet paper feeder and a backup memory error is received in serial communication data.
• Causes: Poor contact in the connector terminals. Defective engine controller PWB. Defective optional upper paper feeder.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC27 on the engine controller PWB and the connector YC2 on the paper feeder main PWB. Repair or replace if necessary. Defective engine controller PWB. Replace the engine controller PWB. Defective optional upper paper feeder. Replace the paper feeder with another unit and check the operation. If the operation is normal, replace or repair the upper of the optional paper feeder.

• Code: C0710
• Description: Paper feeder EEPROM error 2 (lower of optional 500-sheet paper feeder) • When power is turned on, an error is detected in memory check for the lower of the optional 500-sheet paper feeder and a backup memory error is received in serial communication data.
• Causes: Poor contact in the connector terminals. Defective engine controller PWB. Defective optional lower paper feeder.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC27 on the engine controller PWB and the connector YC9 on the paper feeder main PWB of upper paper feeder. Repair or replace if necessary. Defective engine controller PWB. Replace the engine controller PWB. Defective optional lower paper feeder. Replace the paper feeder with another unit and check the operation. If the operation is normal, replace or repair the lower of the optional paper feeder.

• Code: C0750
• Description: Document finisher EEPROM error • A backup memory error is received in serial communication data from the finisher.
• Causes: Poor contact in the connector terminals. Defective engine controller PWB. Defective optional document finisher.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC26 on the engine controller PWB and the connector on the finisher main PWB. Repair or replace if necessary. Defective engine controller PWB. Replace the engine controller PWB. Defective optional document finisher. Replace the document finisher with another unit and check the operation. If the operation is normal, replace or repair the document finisher.

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

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

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