Description: Transfer belt rotation failure
• The belt positioning sensor does not detect the transfer belt position detection hole a second time even after the lapse of a predetermined period of time after it has detected one while the transfer belt is rotated.
• The rack positioning sensor is in the blocked state when the rack motor remains deenergized.
Remedy: 1 Check the PRCB connector for proper connection and correct as necessary. 2 PS4 sensor check. 3 Change transfer belt unit. 4 Change PRCB.
Code: 17H
Description: Rack rotation failure
• The rack positioning sensor is in the blocked state when the rack motor remains deenergized.
• The rack positioning sensor is not blocked a second time even after the lapse of a predetermined period of time after it has been blocked once while the rack motor remains energized.
• The rack positioning sensor is unable to detect the deceleration control position after the lapse of a given period of time after the rack motor has started while the rack motor is turning.
• The count value of the edge of ON signal of the rack positioning sensor during each developing positions are not a predetermined value while the rack motor is turning.
Remedy: 1 Check the M2 connector for proper connection and correct as necessary. 2 Check M2 for proper drive coupling and correct as necessary. 3 Check the PRCB connector for proper connection and correct as necessary. 4 PS3 sensor check. 5 M2 operation check. 6 Change PRCB.
Code: 18H
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, DCPU1, 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 DCPU1.
Code: 19H
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, DCPU1, 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 DCPU1.
Code: 1AH
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, DCPU1, 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 DCPU1.
Code: 1BH
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, DCPU1, 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 DCPU1.