• Code: 411
• Description: Received DCN after transmitting NSC.
• Causes: Transmitter is not ready for polling communication. Password does not match between transmitter and receiver.

• Code: 412
• Description: No response within 12 seconds in NSS/DCS/MPS wait state. (After transmitting FTT)
• Causes: Transmitter is defective. SC PCB is defective.

• Code: 414
• Description: No response received after transmitting 3rd NSC.
• Causes: Password does not match between transmitter and receiver. Transmitter is defective. (No original, document jam, etc.)

• Code: 415
• Description: Remote side attempted to receive message from your machine in polling communication.
• Causes: Inform the remote side that your machine does not have the polling transmission feature.

• Code: 416
• Description: Receiver did not detect post command, such as EOP, MPS, EOM, etc.
• Causes: Transmitter is defective. Line quality is poor. (RTC signal is distorted due to line noise) SC PCB or MJR PCB are defective.

• Code: 417
• Description: Receiver returned RTN in response to post message.
• Causes: Line quality is poor. (There are excessive errors in received data) SC PCB or MJR PCB are defective.

• Code: 418
• Description: Receiver transmitted PIN in response to PRI-Q from transmitter. (Transmitting operator requests voice contact)
• Causes: Line quality is poor. (There are excessive errors in received data) SC PCB or MJR PCB are defective.

• Code: 420
• Description: T1 timer (35 sec.) elapsed without detecting 300 bps signal.
• Causes: There is wrong incoming call.(nonfacsimile communication) Transmitter is defective. SC PCB or MJR PCB are defective.