Brother HL-L2300D Service Manual page 51

 Error code 4000
Drum End Soon
-
The number of rotations of the drum unit is reaching the upper limit.
Error code 4200
Replace Drum
-
The number of rotations of the drum unit has reached the upper limit. (Printing does not
stop.)
<User Check>
• Prepare a new drum unit.
Step
Replace the drum unit with a
new one and reset the drum
1
counter. If the error display is not
cleared, the main PCB is faulty.
 Error code 4B01
Toner Low
-
Dot count or develop roller counter of the toner is reaching the upper limit.
<User Check>
• Prepare a new toner cartridge.
Step
Main PCB failure
1
Cause
Replace the main PCB ASSY.
Cause
Replace the main PCB ASSY.
2-33
Remedy
Remedy
Confidential