• Code: C3
• Description: After detecting a high-speed signal, EOL was not detected for 15 seconds.
• Remedy: This may happen in some cases of bad line condition. Ask the remote party to transmit again.

• Code: C4
• Description: The EOL timer has timed out.
• Remedy: This may happen in some cases of bad line condition. Ask the remote party to transmit again.

• Code: D0
• Description: Post response signal was not detected on the sending side. Post signal was not detected on the receiving side.
• Remedy: This may happen in some cases of bad line condition. Attempt the transmission again. Or ask the remote party to attempt the transmission again.

• Code: D1
• Description: DCN is received.
• Remedy: This may happen in some cases of bad line condition. Ask the remote party to transmit again.

• Code: D2
• Description: RTN/PIN is received on the sending side. RTN/PIN is received on the receiving side.
• Remedy: This may happen in some cases of bad line condition. Ask the remote party to transmit again.

• Code: E0
• Description: A printer error occurred during a reception, and the machine is shifted into memory reception mode. However, there was not enough residual memory
• Remedy: Remove the cause of the printer error, then ask the remote party to transmit again.

• Code: E6
• Description: An error relating to the printer has occurred.
• Remedy: Confirm details of the error using the error code and correct the error. Then ask the remote party to transmit again.

• Code: F0
• Description: The communication ended because of a WDT due to an overrun of the software.
• Remedy: Attempt the communication again. If the error occurs frequently, perform a memory clear (except user area.)