Description: Polygon motor malfunction
• A LOW motor lock signal is not detected even after the lapse of a predetermined period of time after the polygon motor has been started.
• The motor lock signal remains HIGH for a predetermined consecutive period of time while the polygon motor remains energized.
Remedy: 1 Check the cable and connector for proper connection and correct as necessary. 2 Change PH unit. 3 Change PRCB.
Code: 12
Description: Laser malfunction
• The SOS signal is not detected within a predetermined period of time after the output of a laser has been started.
• The SOS signal is never detected in the image area.
Remedy: 1 Check the cable and connector for proper connection and correct as necessary. 2 Change PH unit. 3 Change PRCB.
Code: 14
Description: 2nd image transfer pressure /retraction failure
• The state of the retraction position sensor/2nd image transfer is not changed from the unblocked to blocked state even after the lapse of a predetermined period of time during predrive.
• The retraction position sensor/2nd image transfer is in the unblocked state even after the lapse of a predetermined period of time during predrive.
• The retraction position sensor/2nd image transfer is not blocked (roller in the retracted position) within a predetermined period of time after the retraction sequence of the 2nd transfer roller has been started.
• The retraction position sensor/2nd image transfer is not unblocked (roller in the pressed position) within a predetermined period of time after the pressure sequence of the 2nd transfer roller has been started.
Remedy: 1 Check the M1 connector for proper connection and correct as necessary. 2 Check M1 for proper drive coupling and correct as necessary. 3 Check the SD4 connector for proper connection and correct as necessary. 4 Check the PRCB connector for proper connection and correct as necessary. 5 PS5 sensor check. 6 SD4 operation check. 7 M1 operation check. 8 Change PRCB.
Code: 15
Description: Cleaning blade pressure /retraction failure
• The state of the retraction position sensor/cleaning blade is not changed from the blocked to unblocked state even after the lapse of a predetermined period of time during predrive.
• The retraction position sensor/cleaning blade is in the blocked state even after the lapse of a predetermined period of time during predrive
• The retraction position sensor/cleaning blade is not unblocked (blade in the retracted position) within a predetermined period of time after the retraction sequence of the cleaning blade has been started.
• The retraction position sensor/cleaning blade is not blocked (blade in the pressed position) within a predetermined period of time after the pressure sequence of the cleaning blade has been started.
Remedy: 1 Check the M1 connector for proper connection and correct as necessary. 2 Check M1 for proper drive coupling and correct as necessary. 3 Check the SD3 connector for proper connection and correct as necessary. 4 Check the PRCB connector for proper connection and correct as necessary. 5 PS6 sensor check. 6 SD3 operation check. 7 M1 operation check. 8 Change PRCB.
Code: 16
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.
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: 17
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.he