• Code: 403
• Description: Transmitter had no polling function.
• Causes: "POLLED=ON" (polling XMT ready) is not set at the transmitter. Document to be transmitted is not placed at the transmitter.

• Code: 404
• Description: Transmitter sent NSS (or DCS) followed by TCF three times, but the receiver did not respond. (CFR or FTT is usually returned)
• Causes: Receiver is defective. (Modem, MJR PCB, etc.) SC PCB or MJR PCB are defective. Receiver disconnects line during first NSS (or DCS) is transmitted.

• Code: 405
• Description: Transmitter received FTT after it transmitted TCF at 2400bps. Received RTN after communicating at 2400 bps.
• Causes: Line quality is poor. (TCF is damaged due to line noise) Receiver is defective. (Modem, etc.) SC PCB or MJR PCB are defective.

• Code: 406
• Description: XMT-Password mismatched. RCV-Password mismatched. Selective RCV incomplete.
• Causes: XMT, RCV password does not match. Last 4 digits of TSI does not match with the last 4 digits of ONE-TOUCH, ABBR telephone number.

• Code: 407
• Description: Transmitter received no response after it transmitted post message, such as EOP, MPS, EOM, etc...or received DCN.
• Causes: Receiver is defective. (No paper, paper jamming, etc.) Receiver ceased receiving because of excessive error. (Line quality is poor) SC PCB (Modem) or MJR PCB are defective.

• Code: 408
• Description: Transmitter received RTN after it transmitted EOP, MPS, or EOM.
• Causes: Receiver receives data with error. (Line quality is poor) Receiver is defective. (Modem, etc.) SC PCB or MJR PCB are defective.

• Code: 409
• Description: Transmitter receives PIN after it transmitted a post message, such as EOP, MPS, EOM, etc.
• Causes: Receiver receives data with error due to poor line quality, and receiving operator requests voice contact. Receiver is defective. (Modem, etc.) SC PCB or MJR PCB are defective.

• Code: 410
• Description: Received DCN while waiting for post command. (EOP, MPS, EOM, etc.)
• Causes: Interface or line is faulty. Transmitter is defective.