Cleaning The Corona Wires - Brother MFC-9120CN User Manual

Cleaning the corona wires

If you have print quality problems, clean the
corona wires as follows:
a
Turn off the machine's power switch.
Unplug the telephone line cord first,
disconnect all cables, and then unplug
the power cord from the AC power
outlet.
b
Fully open the top cover by lifting up on
the handle (1).
1
IMPORTANT
When the scanner is open, you cannot
open the top cover.
Troubleshooting and routine maintenance
c
Take out the drum unit and toner
C
cartridge assemblies.
IMPORTANT
• We recommend that you place the drum
unit and toner cartridge assembly on a
clean, flat surface with a sheet of
disposable paper or cloth underneath it in
case you accidentally spill or scatter toner.
• To prevent damage to the machine from
static electricity, DO NOT touch the
electrodes shown in the illustration.
C
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