Konica Minolta bizhub 20 - Manual (Page 149)

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Cleaning the corona wire
C
If you have print quality problems, clean the
corona wire as follows:
a
Turn off the machine. Unplug the
telephone line cord first, disconnect all
cables, and then unplug the power cord
from the electrical socket.
b
Open the front cover and slowly take out
the drum unit and toner cartridge
assembly.
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.
• Handle the toner cartridge carefully. If
toner scatters on your hands or clothes,
wipe or wash it off with cold water at once.
• To prevent damage to the machine
caused by static electricity, DO NOT touch
the electrodes shown in the illustration.
c
Clean the corona wire inside the drum
unit by gently sliding the blue tab from
right to left and left to right several times.
Note
Be sure to return the blue tab to the home
position (a) (1). If you do not, printed
pages may have a vertical stripe.
d
Put the drum unit and toner cartridge
assembly back in the machine.
e
Close the front cover.
1