Error Codes; Error Indication - Brother HL-4040CN Service Manual

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
20
Laser diode failure (K)
21
Laser diode failure (Y)
22
Laser diode failure (M)
23
Laser diode failure (C)
24
Internal temperature sensor failure
25
Develop drive motor failure
26
Belt drive motor failure
27
Paper feed/belt cleaner motor failure
28
Drum drive motor 1 (K, Y) failure
29
Drum drive motor 2 (M, C) failure
2A
Belt cleaner release sensor failure
2B
Air intake fan (AIR) failure
2C
Toner sensor PCB failure (K)
2D
Toner sensor PCB failure (Y)
2E
Toner sensor PCB failure (M)
2F
Toner sensor PCB failure (C)
30
Incorrect EL lamp current value
31
Density sensor failure
32
Density sensor shutter performance
malfunction
33
Color registration sensor failure
35
NVRAM failure on Engine PCB
36
Transfer HVPS PCB failure
37
Belt unit temperature sensor failure
38
THM sensor failure
39
HUM sensor failure
3A
Engine communication error
3D
Main PCB failure
3F
Writing error into engine program
50
Replace the drum unit
51
Replace the MP paper feeding kit
52
Replace the T1 paper feeding kit
Problem
Refer Error
to: codes
1-10 53
Replace the LT paper feeding kit
1-10 54
Replace the fuser unit
1-10 55
Replace the laser unit
1-10 56
Back cover opened
1-10 57
Paper jam while turning it over in duplex
printing, or DX solenoid failure
1-11
1-11 58
Fuser unit failure
1-11 59
Fuser unit failure
1-11 5A
Charge HVPS PCB ASSY failure
1-11 5E
Replace the belt unit
1-12 5F
Replace the waste toner box
1-12 60
Toner cartridge (C) is at the end of life.
1-13 61
Toner cartridge (M) is at the end of life.
1-13 62
Toner cartridge (Y) is at the end of life.
1-13 63
Toner cartridge (K) is at the end of life.
1-13 64
Replace the toner cartridge (C)
1-13 65
Replace the toner cartridge (M)
1-14 66
Replace the toner cartridge (Y)
1-14 67
Replace the toner cartridge (K)
68
Fuser unit failure
1-14 69
Fuser unit failure
1-15 6A
Fuser unit failure
1-15 6B
Fuser unit failure
1-15 6C
Fuser unit failure
1-16 6D
Fuser unit failure
1-16 6E
Fuser unit failure
1-16 6F
Fuser unit failure
1-16 71
Polygon motor failure
1-17 72
Beam detecting sensor (K) failure
1-5 73
Beam detecting sensor (C) failure
1-5 74
Toner cartridge whose color is used
reaches the end of life during printing.
1-5
1-3
Problem
Confidential
Refer
to:
1-5
1-6
1-6
1-17
1-17
1-18
1-18
1-18
1-6
1-19
1-19
1-19
1-19
1-19
1-20
1-20
1-20
1-20
1-21
1-21
1-21
1-21
1-21
1-21
1-21
1-21
1-22
1-22
1-22
1-22