Confidential
1-3
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)
1-10 53 Replace the LT paper feeding kit 1-5
21 Laser diode failure (Y) 1-10 54 Replace the fuser unit 1-6
22 Laser diode failure (M) 1-10 55 Replace the laser unit 1-6
23 Laser diode failure (C) 1-10 56 Back cover opened 1-17
24 Internal temperature sensor failure 1-10
25 Develop drive motor failure 1-11
57
Paper jam while turning it over in duplex
printing, or DX solenoid failure
1-17
26 Belt drive motor failure 1-11 58 Fuser unit failure 1-18
27 Paper feed/belt cleaner motor failure 1-11 59 Fuser unit failure 1-18
28 Drum drive motor 1 (K, Y) failure 1-11 5A Charge HVPS PCB ASSY failure 1-18
29 Drum drive motor 2 (M, C) failure 1-11 5E Replace the belt unit 1-6
2A Belt cleaner release sensor failure 1-12 5F Replace the waste toner box 1-19
2B
Air intake fan (AIR) failure
1-12 60 Toner cartridge (C) is at the end of life. 1-19
2C Toner sensor PCB failure (K) 1-13 61 Toner cartridge (M) is at the end of life. 1-19
2D Toner sensor PCB failure (Y) 1-13 62 Toner cartridge (Y) is at the end of life. 1-19
2E Toner sensor PCB failure (M) 1-13 63 Toner cartridge (K) is at the end of life. 1-19
2F Toner sensor PCB failure (C) 1-13 64 Replace the toner cartridge (C) 1-20
30 Incorrect EL lamp current value 1-13 65 Replace the toner cartridge (M) 1-20
31 Density sensor failure 1-14 66 Replace the toner cartridge (Y) 1-20
67 Replace the toner cartridge (K) 1-2032 Density sensor shutter performance
malfunction
1-14
68
Fuser unit failure 1-21
33 Color registration sensor failure 1-14 69 Fuser unit failure 1-21
35 NVRAM failure on Engine PCB 1-15 6A Fuser unit failure 1-21
36 Transfer HVPS PCB failure 1-15 6B Fuser unit failure 1-21
37 Belt unit temperature sensor failure 1-15 6C Fuser unit failure 1-21
38 THM sensor failure 1-16 6D Fuser unit failure 1-21
39 HUM sensor failure 1-16 6E Fuser unit failure 1-21
3A Engine communication error 1-16 6F Fuser unit failure 1-21
3D Main PCB failure 1-16 71 Polygon motor failure 1-22
3F Writing error into engine program 1-17 72 Beam detecting sensor (K) failure 1-22
50 Replace the drum unit 1-5 73 Beam detecting sensor (C) failure 1-22
51 Replace the MP paper feeding kit 1-5
52 Replace the T1 paper feeding kit 1-5
74
Toner cartridge whose color is used
reaches the end of life during printing.
1-22
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