Brother International MFC 9120CN Users Manual - English - Page 173

Cleaning the corona wires

Page 173 highlights

Troubleshooting and routine maintenance Cleaning the corona wires C If you have print quality problems, clean the corona wires as follows: c Take out the drum unit and toner cartridge assemblies. 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 C 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. 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. 157

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Troubleshooting and routine maintenance
157
C
Cleaning the corona wires
C
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).
IMPORTANT
When the scanner is open, you cannot
open the top cover.
c
Take out the drum unit and toner
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.
1