• Code: 1952
• Description: After Heater overheat error
  A heater temperature out of a predetermined range was detected the predetermined number of times in a row.
• Remedy: 1. Replace the thermistor (After Heater). 2. Replace the After Heater. 3. Replace the Main Board.

• Code: 1953
• Description: After Heater heat deviation error
  The difference between the current temperature and target temperature exceeded a predetermined limit.
• Remedy: 1. Replace the thermistor (After Heater). 2. Replace the After Heater. 3. Replace the Main Board.

• Code: 1954
• Description: After Heater power supply abnormal error 1
  • Cable disconnection, breaking, blowout of a fuse, or heater failure. • AC cable (for the After Heater) disconnection
• Remedy: 1. Reconnect the cable. 2. Replace the cable. 3. Replace the Sub-E Board. 4. Replace the After Heater.

• Code: 1A23
• Description: RTC data invalid error
  The various absolute time settings stored on the NVRAM are abnormal.
• Remedy: If the error still occurs after resetting the date and time, perform the followings. 1. Replace the RTC backup battery. 2. Replace the Main Board.

• Code: 1A26
• Description: RTC Access T/O error
  The RTC circuit on the Main Board malfunctions.
• Remedy: 1. Turn the power off and remove the RTC backup battery. 2. After several seconds, re-attach the battery and turn the power back on. 3. Reset the date and time settings of the RTC using the Service Program.

• Code: 1A37
• Description: Thermistor error
  • The Head FFC is not connected correctly. • A temperature out of a predetermined range was detected by the Head thermistor. • Head thermistor failure
• Remedy: 1. Replace the Head FFC. 2. Replace the Print Head.

• Code: 1A38
• Description: Transistor environmental temperature error
  • Transistor failure • A temperature out of a predetermined range was detected by the Head thermistor.
• Remedy: Replace the Print Head.

• Code: 1A39
• Description: Head error
  • Connection failure of the Head FFC. • Electric parts or components are damaged due to improper Head FFC connection such as connecting it at an angle. • The drive circuit in the Print Head is damaged. • The fuse of the Main Board has blown.
• Remedy: 1. Replace the Head FFC. 2. Replace the Print Head. 3. Replace the Main Board.