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2. ERROR CODES
This machine includes a self-diagnosis function. If the machine does not work normally it
judges that an error has occurred, and indicates the corresponding error message on the LCD,
which in turn helps the end user to quickly find out the problem.
2.1 Error Indication
The error codes shaded in the table below are recoverable errors if following the User Check
items.
Error
codes
Problem
Refer
to:
Error
codes
Problem
Refer
to:
20 Laser diode failure (K) 1-8 58 Fuser unit failure 1-15
21 Laser diode failure (Y) 1-8 59 Fuser unit failure 1-15
22 Laser diode failure (M) 1-8 5A Charge HVPS PCB ASSY failure 1-16
23 Laser diode failure (C) 1-8 5E Replace the belt unit 1-6
25 Develop drive motor failure 1-9 5F Replace the waste toner box 1-16
26 Belt drive motor failure 1-9 60 Toner cartridge (C) is at the end of life. 1-17
27 Paper feed/belt cleaner motor failure 1-9 61 Toner cartridge (M) is at the end of life. 1-17
28 Drum drive motor 1 (K, Y) failure 1-9 62 Toner cartridge (Y) is at the end of life. 1-17
29 Drum drive motor 2 (M, C) failure 1-9 63 Toner cartridge (K) is at the end of life. 1-17
2A Belt cleaner release sensor failure 1-10 64 Replace the toner cartridge (C) 1-17
2B Air intake fan (AIR) failure 1-10 65 Replace the toner cartridge (M) 1-17
2C Toner sensor PCB failure (K) 1-11 66 Replace the toner cartridge (Y) 1-17
2D Toner sensor PCB failure (Y) 1-11 67 Replace the toner cartridge (K) 1-17
2E Toner sensor PCB failure (M) 1-11 68 Fuser unit failure 1-18
2F Toner sensor PCB failure (C) 1-11 69 Fuser unit failure 1-18
30 Incorrect EL lamp current value 1-11 6A Fuser unit failure 1-18
31 Density sensor failure 1-12 6B Fuser unit failure 1-18
6C Fuser unit failure 1-1832 Density sensor shutter performance
malfunction
1-12
6D Fuser unit failure 1-18
33 Color registration sensor failure 1-12 6E Fuser unit failure 1-18
34 Color adjustment shutter failure 1-13 6F Fuser unit failure 1-18
35 NVRAM failure on Engine PCB 1-13 71 Polygon motor failure 1-19
36 Transfer HVPS PCB failure 1-13 72 Beam detecting sensor (K) failure 1-19
37 Belt unit temperature sensor failure 1-13 73 Beam detecting sensor (C) failure 1-19
38 THM sensor failure 1-14
39 HUM sensor failure 1-14
74 Toner cartridge whose color is used
reaches the end of life during printing.
1-19
3B Main PCB RAM failure 1-14 75 Machine cooling down inside 1-7
50 Replace the drum unit 1-5 76 Fuser unit failure 1-20
51 Replace the MP paper feeding kit 1-5 78 Fuser unit failure 1-20
52 Replace the T1 paper feeding kit 1-5 7C Engine communication error 1-20
53 Replace the LT paper feeding kit 1-6 7D Dirt on drum unit 1-21
54 Replace the fuser unit 1-6
55 Replace the laser unit 1-6
56 Back cover opened 1-14
82 Density patch measurement is not
completed normally when
implementing calibration from the
control panel.
1-21
57 Paper jam while turning it over in
duplex printing or DX solenoid failure
1-15
84 Paper jam rear side of the machine 1-22