Brother HL-5350DN

3-17
Confidential
■ DRUM END SOON
The drum unit reached 90% of the time for replacement.
■ DRUM ERROR
Dirt on drum unit.
<User Check>
- Replace the drum unit with a new one.
- Reset the counter. (Refer to 2.2 Reset Parts Life Menu in Chapter 7.)
<User Check>
- Clean the corona wire in the drum unit.
- Replace the drum unit with a new one, and reset the drum counter.
Step Cause Remedy
1
Dirt or dust on drum unit
electrodes
Clean the electrodes on the drum unit and
the machine body (Refer to Fig. 3-2, Fig. 3-3).
2
High-voltage power supply PCB
failure
Replace the high-voltage power supply
PCB.
3 Main PCB ASSY failure Replace the main PCB ASSY failure.