• Code: EC21 2F65
• Description: Direct diode abnormal temperature error at print head replacement. (support number : 1477)
• Causes: Direct diode sensor detects abnormal value at print head replacement.
• Remedy: 1 Remove the print head and check the condition of print head contacting part. Proper condition Go to 2. Abnormal condition Clean the surface of the print head contacting part. (The waste cloth without a nap must be used.) 2 Perform [DIAGNOSIS > CR_SYSTEM_CHECK] to check the result of LONG FFC CHECK and if CRC value changes after turning the printer off and back on (When CRC value changes, wires are broken). Without broken wires Replace CARRIAGE UNIT. With broken wires Replace FLEXIBLE CABLE UNIT.

• Code: EC21 2F66
• Description: Diode abnormal temperature error at starting up (support number : 4801)
• Causes: Direct diode sensor detects abnormal value at starting up.
• Remedy: 1 Perform [DIAGNOSIS > CR_SYSTEM_CHECK] to diagnose carriage system. No problem Go to 2. Abnormal • Problem in ACC. SENSOR CHECK or CR VIBRATIONCHECK Replace CARRIAGE UNIT. • Problem in LONG FFC CHECK or CRC value changes after turning the printer off and back on Replace FLEXIBLE CABLE UNIT. 2 Remove the print head and check the condition of print head contacting part. Proper condition Replace the print head. Improper condition Go to 3. 3 Clean the surface of the print head contacting part. (The waste cloth without a nap must be used.) The problem is resolved Complete. The problem is not resolved Go to 4. 4 Replace the print head. The problem is resolved Complete. The problem is not resolved Replace MAIN PCB UNIT. (After replacement, perform PCB replacement mode and necessary adjustments.)

• Code: EC21 2F67
• Description: Print head abnormal H3V voltage error during printing (support number : 4801)
• Causes: Abnormal H3V voltage of the print head is detected during printing.
• Remedy: 1 Perform [DIAGNOSIS > CR_SYSTEM_CHECK] to diagnose carriage system. No problem Go to 2. Abnormal • Problem in ACC. SENSOR CHECK or CR VIBRATIONCHECK Replace CARRIAGE UNIT. • Problem in LONG FFC CHECK or CRC value changes after turning the printer off and back on Replace FLEXIBLE CABLE UNIT. 2 Remove the print head and check the condition of print head contacting part. Proper condition Replace the print head. Improper condition Go to 3. 3 Clean the surface of the print head contacting part. (The waste cloth without a nap must be used.) The problem is resolved Complete. The problem is not resolved Go to 4. 4 Replace the print head. The problem is resolved Complete. The problem is not resolved Replace MAIN PCB UNIT. (After replacement, perform PCB replacement mode and necessary adjustments.)

• Code: EC21 2F68
• Description: Print head temperature error (reboot request) (support number : 4801)
• Causes: Print head temperature is detected more than the specified times. * After connecting the flexible cable, when this error occurs at printer rebooting, the cause is connection of the FLEXIBLE CABLE UNIT. Check the cable connection, and reboot the printer.
• Remedy: 1 Reboot the printer.

• Code: EC21 2F69
• Description: Print head abnormal temperature error (print head replacement request) (support number : 1478)
• Causes: The printer does not recover by rebooting after print head abnormal temperature error. * After connecting the flexible cable, when this error occurs at printer rebooting, the cause is connection of the FLEXIBLE CABLE UNIT. Check the cable connection, and reboot the printer.
• Remedy: 1 Replace the print head.

• Code: EC21 2F6D
• Description: Print head EEPROM check sum error2 (support number : 140F)
• Causes: Abnormity is detected in check sum judgement of EEPROM at print head installation and starting up. * After connecting the flexible cable, when this error occurs at printer rebooting, the cause is connection of the FLEXIBLE CABLE UNIT. Check the cable connection, and reboot the printer.
• Remedy: 1 Replace the print head.

• Code: EC21 2F6E
• Description: Print head abnormal circuit error (reboot request) (support number : 4801)
• Causes: Print head abnormal temperature is detected more than the specified times. * After connecting the flexible cable, when this error occurs at printer rebooting, the cause is connection of the FLEXIBLE CABLE UNIT. Check the cable connection, and reboot the printer.
• Remedy: 1 Reboot the printer.

• Code: EC21 2F6F
• Description: Print head abnormal circuit error (print head replacement request) (support number : 1478)
• Causes: The printer does not recover by rebooting after print head abnormal circuit error. * After connecting the flexible cable, when this error occurs at printer rebooting, the cause is connection of the FLEXIBLE CABLE UNIT. Check the cable connection, and reboot the printer.
• Remedy: 1 Replace the print head.