Description: Warming-up failure • The surface temperature of the fusing roller does not reach a given level even after the lapse of a given period of time during a warm-up cycle.
Causes: Fusing unit Right door switch (SW2) DC power supply (DCPU) Printer control board (PRCB)
Remedy: 1 Check the fusing unit for correct installation. 2 Check the open/close operation of the right door. 3 Check the fusing unit, DCPU and PRCB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change PRCB. 6 Change DCPU.
Code: C3751
Description: Fusing failure (abnormally high fusing temperature 1) • The temperature detected by the thermistor/1 (TH1) remains higher than a given temperature for a given period of time.
Causes: Fusing unit Right door switch (SW2) DC power supply (DCPU) Printer control board (PRCB)
Remedy: 1 Check the fusing unit for correct installation. 2 Check the open/close operation of the right door. 3 Check the fusing unit, DCPU and PRCB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change PRCB. 6 Change DCPU.
Code: C3752
Description: Fusing failure (abnormally high fusing temperature 2) • The temperature detected by the thermistor/2 (TH2) remains higher than a given temperature for a given period of time.
Causes: Fusing unit Right door switch (SW2) DC power supply (DCPU) Printer control board (PRCB)
Remedy: 1 Check the fusing unit for correct installation. 2 Check the open/close operation of the right door. 3 Check the fusing unit, DCPU and PRCB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change PRCB. 6 Change DCPU.
Code: C3851
Description: temperature 2) • The temperature detected by the thermistor/2 (TH2) remains higher than a given temperature for a given period of time. C3851 Fusing failure (abnormally low fusing temperature) • The temperature detected by the thermistor/1 (TH1) remains lower than a given temperature for a given period of time.
Causes: Fusing unit Right door switch (SW2) DC power supply (DCPU) Printer control board (PRCB)
Remedy: 1 Check the fusing unit for correct installation. 2 Check the open/close operation of the right door. 3 Check the fusing unit, DCPU and PRCB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change PRCB. 6 Change DCPU.
Code: C4001
Description: Faulty HSYNC • The SOS sensor does not detect a rising edge of SOS within a given period of time after the polygon motor has started turning and a laser output has been started. • The SOS sensor detects no rising edges of SOS while VIA (image area control) is ON.
Causes: PH unit C4101 Polygon motor malfunction Printer control board (PRCB)
Remedy: 1 Turn OFF and ON the power switch. 2 Check the connector between PH unit-PRCB CN1, CN2 for proper connection and correct as necessary. 3 Change PH unit. 4 Change PRCB.
Code: C4101
Description: Polygon motor malfunction • A HIGH polygon motor lock signal is not detected within a given period of time that begins 0.5 sec. after the polygon motor has started turning. • A LOW polygon motor lock signal is not detected for a continuous given period of time while the rotation of the polygon motor remains stabilized.
Causes: PH unit C4101 Polygon motor malfunction Printer control board (PRCB)
Remedy: 1 Turn OFF and ON the power switch. 2 Check the connector between PH unit-PRCB CN1, CN2 for proper connection and correct as necessary. 3 Change PH unit. 4 Change PRCB.