Brother International HL 1850 Service Manual - Page 163

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CHAPTER 5 PERIODIC MAINTENANCE CAUTION: It is recommended to place the drum unit assembly on a piece of disposable paper or cloth in case you accidentally spill or scatter toner. (3) While pressing the lock lever, pull the toner cartridge out of the drum unit assembly. (Fig.5-2) I (4) Unpack the new drum unit, and remove the protective materials. (5) Install the toner cartridge into the new drum unit until you hear it lock into place with a click. When the toner cartridge is installed correctly, the lock lever is lifted automatically. (Fig.5-3) Fig. 5-2 rr Fig. 5-3 (6) Re-install the drum unit assembly in the printer. (7) Reset the page counter referring to the instructions supplied with the new drum unit. (8) Close the front cover. CAUTION: • For best performance, use only genuine Brother toner. The product should only be used in a clean, dust-free environment with adequate ventilation.. • Only unpack a drum unit immediately before you need to install it into the printer. If an unpacked drum unit is subjected to excessive direct sunlight or room light, the unit may be damaged. • Handle the drum unit and toner cartridge carefully. If toner scatters on your hands or clothes, wipe or wash it off with cold water immediately. • Discard the used drum unit according to local regulations. Be sure to seal up the drum unit tightly so that toner powder does not spill out of the unit. • Do not reset the page counter when replacing the toner cartridge only. • It is recommended to clean the printer when you replace the drum unit. Refer to subsection 3. `PERIODICAL CLEANING' in this Chapter. 1.2 Toner Cartridge Toner low: Toner empty: Life expectancy: The "TONER LOW" message appears at intervals on the LCD display when the toner cartridge has nearly run out of toner. The "TONER EMPTY" message appears on the LCD display when the printer has run out of toner or the toner is not evenly distributed inside the cartridge. 6,500 pages / toner cartridge (When printing A4 or Letter size paper at 5% print coverage) 5-2

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CHAPTER
5
PERIODIC
MAINTENANCE
CAUTION:
It
is
recommended
to
place
the
drum
unit
assembly
on
a
piece
of
disposable
paper
or
cloth
in
case
you
accidentally
spill
or
scatter
toner.
(3)
While
pressing
the
lock
lever,
pull
the
toner
cartridge
out
of
the
drum
unit
assembly.
(Fig.5-2)
I
Fig.
5-2
(4)
Unpack
the
new
drum
unit,
and
remove
the
protective
materials.
Install
the
toner
cartridge
into
the
new
drum
unit
until
you
hear
it
lock
into
place
with
a
click.
When
the
toner
cartridge
is
installed
correctly,
the
lock
lever
is
lifted
automatically.
(Fig.5-3)
(
5
)
Fig.
5-3
rr
(6)
Re
-install
the
drum
unit
assembly
in
the
printer.
(7)
Reset
the
page
counter
referring
to
the
instructions
supplied
with
the
new
drum
unit.
(8)
Close
the
front
cover.
CAUTION:
•
For
best
performance,
use
only
genuine
Brother
toner.
The
product
should
only
be
used
in
a
clean,
dust
-free
environment
with
adequate
ventilation..
•
Only
unpack
a
drum
unit
immediately
before
you
need
to
install
it
into
the
printer.
If
an
unpacked
drum
unit
is
subjected
to
excessive
direct
sunlight
or
room
light,
the
unit
may
be
damaged.
•
Handle
the
drum
unit
and
toner
cartridge
carefully.
If
toner
scatters
on
your
hands
or
clothes,
wipe
or
wash
it
off
with
cold
water
immediately.
•
Discard
the
used
drum
unit
according
to
local
regulations.
Be
sure
to
seal
up
the
drum
unit
tightly
so
that
toner
powder
does
not
spill
out
of
the
unit.
•
Do
not
reset
the
page
counter
when
replacing
the
toner
cartridge
only.
•
It
is
recommended
to
clean
the
printer
when
you
replace
the
drum
unit.
Refer
to
subsection
3.
`PERIODICAL
CLEANING'
in
this
Chapter.
1.2
Toner
Cartridge
Toner
low:
Toner
empty:
Life
expectancy:
The
"TONER
LOW"
message
appears
at
intervals
on
the
LCD
display
when
the
toner
cartridge
has
nearly
run
out
of
toner.
The
"TONER
EMPTY"
message
appears
on
the
LCD
display
when
the
printer
has
run
out
of
toner
or
the
toner
is
not
evenly
distributed
inside
the
cartridge.
6,500
pages
/
toner
cartridge
(When
printing
A4
or
Letter
size
paper
at
5%
print
coverage)
5-2