Brother International HL-3400CN Service Manual - Page 187
Cleaning, Dustproof, Glass, Laser
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CHAPTER 6 PERIODIC MAINTENANCE 2.8 Cleaning the Dustproof Glass in the Laser Unit The dustproof glass in the laser unit should be cleaned according to the periodic maintenance cleaning cycle set out in Table 6-3. Tools to Prepare • Cotton cloth (2 - 3 pieces) • Cotton swab (2 - 3 pieces) Cleaning Procedure (1) Turn off the power supply. (2) Open the top cover and the front cover. (3) Remove the toner cartridges and the OPC belt cartridge. (4) Open the dust-proof glass from the laser unit. (5) Clean the surface of the dustproof glass with a cotton swab. ACAUTION NEVER use alcohol or similar solvents for cleaning the dustproof glass, otherwise it will be a cause of image failures. Laser unit Laser WARNING Label a (> Fig. 6-9 6-16
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CHAPTER
6
PERIODIC
MAINTENANCE
2.8
Cleaning
the
Dustproof
Glass
in
the
Laser
Unit
The
dustproof
glass
in
the
laser
unit
should
be
cleaned
according
to
the
periodic
maintenance
cleaning
cycle
set
out
in
Table
6-3.
Tools
to
Prepare
•
Cotton
cloth
(2
-
3
pieces)
•
Cotton
swab
(2
-
3
pieces)
Cleaning
Procedure
(1)
Turn
off
the
power
supply.
(2)
Open
the
top
cover
and
the
front
cover.
(3)
Remove
the
toner
cartridges
and
the
OPC
belt
cartridge.
(4)
Open
the
dust
-proof
glass
from
the
laser
unit.
(5)
Clean
the
surface
of
the
dustproof
glass
with
a
cotton
swab.
A
CAUTION
NEVER
use
alcohol
or
similar
solvents
for
cleaning
the
dustproof
glass,
otherwise
it
will
be
a
cause
of
image
failures.
Laser
unit
a
Laser
WARNING
Label
Fig.
6-9
(>
6-16