Brother HL-4140CN Service Manual page 80

■ Error code 74
(This error can be found out only in
Replace Toner
Open the Front Cover, replace Toner Cartridge. Cyan (C)
Replace Toner
Open the Front Cover, replace Toner Cartridge. Magenta (M)
Replace Toner
Open the Front Cover, replace Toner Cartridge. Yellow (Y)
Replace Toner
Open the Front Cover, replace Toner Cartridge. Black (K)
The color toner reached the end of life during printing.
<User Check>
- Replace the toner cartridge which reached the end of life with a new one.
Step
1 Toner/New sensor PCB ASSY
failure (Toner empty)
2 Engine PCB failure
3 Main PCB failure
■ Error code 75
Cooling Down
Wait for a while
Cooling down the inside of the printer to protect it.
<User Check>
- Leave the printer for a while as the power remains ON.
Step
1 Internal temperature sensor
failure
2 Main PCB failure
Cause
Cause
2-49
"Function code 82".)
Remedy
Check the sensor performance following
the procedure described in
32". If any problem occurs, replace the
Toner/New sensor PCB ASSY.
Replace the engine PCB ASSY.
Replace the main PCB ASSY.
Remedy
Replace the internal temperature sensor.
Replace the main PCB ASSY.
"Function code
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