Description: Heating roller warm-up failure
• The thermistor does not detect a predetermined temperature value even after the lapse of a predetermined period of time after the current warm-up cycle has been started and the current warm-up cycle is thus not completed.
Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the fusing unit, PDCU, and PRCB for proper connection and correct as necessary. 3 check the lever of the safety switch and correct as necessary. 4 change the fusing unit. 5 Change PRCB. 6 Change PDCU.
Code: 19
Description: Abnormally low heating roller temperature
• The temperature detected by the thermistor remains lower than a predetermined value for a predetermined period of time.
Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the fusing unit, PDCU, and PRCB for proper connection and correct as necessary. 3 check the lever of the safety switch and correct as necessary. 4 change the fusing unit. 5 Change PRCB. 6 Change PDCU.
Code: 1A
Description: Abnormally high heating roller temperature
• The temperature detected by the thermistor is a predetermined value or higher for a predetermined period of time.
Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the fusing unit, PDCU, and PRCB for proper connection and correct as necessary. 3 check the lever of the safety switch and correct as necessary. 4 change the fusing unit. 5 Change PRCB. 6 Change PDCU.
Code: 1B
Description: Faulty thermistor
• The condition of a temperature rise of less than 1°C extends continuously for a predetermined period of time that begins when the warm-up cycle is started.
Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the fusing unit, PDCU, and PRCB for proper connection and correct as necessary. 3 check the lever of the safety switch and correct as necessary. 4 change the fusing unit. 5 Change PRCB. 6 Change PDCU.
Code: 21
Description: Faulty OHP sensor
• It is determined that the OHP sensor is faulty through a check made at the end of the predrive.
Remedy: 1 Check the PRCB connector for proper connection and correct as necessary. 2 PS2 sensor check. 2500W: PRCB PJ12PRCB-6 (ON) 2530 DL: PRCB PJ12PRCB-6 (ON) 2550/2550DN: PRCB PJ12PRCB-6 (ON) 2500W: C-10 2530 DL: C-9 2550/2550DN: C-9. 3 Change PRCB.
Code: 24
Description: Faulty fusing thermistor resistor
• The heater lamp remains ON for a predetermined consecutive period of time.
Remedy: 1 Check the PRCB connector for proper connection and correct as necessary. 2 Change fusing unit. 3 Change PRCB.