Drum Error; Drum Unit Replacement; (Even Though Drum Counter Is Reset, "Replace Drum" Warning Remains.) - Brother MFC-9130CW Service Manual

4.7.4

Drum error

<User Check>
- Clean the corona wire of each drum unit for all four colors.
- Replace the drum unit with a new one and reset the drum counter.
Step
1
2
3
4.7.5

Drum unit replacement

(Even though drum counter is reset, "Replace Drum" warning remains.)

Step
1
2
3
Cause
Dirt on the GRID electrodes of
the drum unit
High-voltage power supply
PCB failure
Main PCB failure
Cause
Dirt on the GRID electrodes of
the drum unit
High-voltage power supply
PCB failure
Main PCB failure
Clean the GRID electrodes of the main body
and the drum unit.
(Refer to fig. 2-7 (P2-50)
Replace the high-voltage power supply PCB
ASSY.
Replace the main PCB ASSY.
Clean the GRID electrodes of the main body
and the drum unit.
(Refer to fig. 2-7 (P2-50)
Replace the high-voltage power supply PCB
ASSY.
Replace the main PCB ASSY.
2-108
Remedy
and fig. 2-8 (P2-51))
Remedy
and fig. 2-8 (P2-51))
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