Error Message Prompting Toner Cartridge Replacement Does Not Disappear; Drum Error; Error Message Prompting Drum Replacement Does Not Disappear - Brother HL-L2300D Service Manual

4.7.3 Error message prompting toner cartridge replacement does not disappear

<User Check>
- Check that a new (not used) toner cartridge is set.
- Check that the genuine toner cartridge is set.
Step
New toner actuator coming off
1
Connection failure of the new toner
2
sensor PCB flat cable
Connection failure of the panel PCB
3
flat cable
New toner sensor PCB failure
4
Panel PCB failure
5
Main PCB failure
6

4.7.4 Drum error

<User Check>
- Clean the corona wire of the drum unit.
- Replace the drum unit with a new one.
Step
Dirt on the electrodes of the drum
1 unit and those of the machine
Dirt on the high-voltage power
2
supply PCB terminal
High-voltage power supply PCB
3
failure
Main PCB failure
4

4.7.5 Error message prompting drum replacement does not disappear

<User Check>
- Reset the drum counter according to the manual.
Step
Main PCB failure
1
Cause
Reattach the new toner actuator.
Reconnect the new toner sensor PCB flat
cable.
Reconnect the panel PCB flat cable.
Replace the new toner sensor PCB ASSY.
Replace the panel PCB ASSY.
Replace the main PCB ASSY.
Cause
Clean the electrodes of the drum unit and
those of the machine. (Refer to
Fig.
Clean the electrodes of the machine.
(Refer to
Replace the high-voltage power supply PCB
ASSY.
Replace the main PCB ASSY.
Cause
Replace the main PCB ASSY.
2-72
Remedy
Remedy
2-6.)
Fig. 2-6.)
Remedy
Fig. 2-5 and
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