Brother DCP-7055 - Manual (Page 52)

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c
Push down the green lock lever and take
the toner cartridge out of the drum unit.
IMPORTANT
• To avoid print quality problems, DO NOT
touch the shaded parts shown in the
illustrations below.
• To prevent damage to the machine from
static electricity, DO NOT touch the
electrodes shown in the illustration.
d
Put the print sample in front of the drum
unit, and find the exact position of the
poor print.