• Code: C0170
• Description: Copy counts problem
  When the power is turned on, the total count and the scan count are abnormal both on the main PWB and the engine PWB.
• Causes: Data damage of EEPROM.
  Defective PWB
• Remedy: Data damage of EEPROM. Contact the Service Administrative Division.
  Defective PWB. Replace the main PWB or engine PWB and check for correct operation.

• Code: C0180
• Description: Machine number mismatch
  Machine number of main PWB and engine PWB does not match.
  
• Causes: Data damage of EEPROM.
• Remedy: Contact the Service Administrative Division.

• Code: C0210
• Description: Communication problem between the main and engine
  When the power is turned on, the machine does not detect the low level of SBSY and the high level of SDIR for 10 s.
• Causes: Poor contact in the connector terminals.
  Defective PWB.
• Remedy: Poor contact in the connector terminals. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective PWB. Replace the main PWB or engine PWB and check for correct operation.

• Code: C0240
• Description: Printer PWB communication problem
  The printer PWB does not respond 120 s after the power is turned on.
• Causes: Poor contact in the connector terminals.
  Defective main PWB.
• Remedy: Poor contact in the connector terminals. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective main PWB. Replace the main PWB and check for correct operation.

• Code: C0250
• Description: Scanner network board communication problem
  The scanner network board does not respond.
• Causes: Poor contact in the connector terminals.
  Defective PWB
• Remedy: Poor contact in the connector terminals. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective PWB. Replace the main PWB or scanner network board and check for correct operation.

• Code: C0280
• Description: Communication problem between the fax control PWB and main PWB
  Communication between the fax control PWB and the main PWB of the machine cannot be performed normally.
• Causes: Poor contact in the connector terminals.
  Defective PWB.
• Remedy: Poor contact in the connector terminals. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective PWB. Replace the fax control PWB or main PWB and check for correct operation.

• Code: C0410
• Description: Document processor communication problem
  Communication fails five times succes-sively.
• Causes: Document processor installed incorrectly.
  Defective PWB.
• Remedy: Document processor installed incorrectly. Check the installation state of the document processor and adjust it if it is not properly installed.
  Defective PWB. Replace the engine PWB or DP driver PWB and check for correct operation.

• Code: C0420
• Description: First paper feeder communication problem Communication fails five times succes-sively.
• Causes: First paper feeder installed incorrectly.
  Defective PWB.
• Remedy: First paper feeder installed incorrectly. Check the installation state of the first paper feeder and adjust it if it is not properly installed.
  Defective PWB. Replace the engine PWB or cassette main PWB and check for correct operation.