Brother International HL 1850 Service Manual - Page 168

HL

-1850/1870N

SERVICE

MANUAL

4)

Clean

the

primary corona

wire

inside

the

drum

unit

by

gently

sliding

the

blue

tab

from

right

to

left

several

times.

Return

the

tab

to

the

home

position

before

re

-install

the

drum

unit

assembly.

Home

position

0

4

Fig.

5-10

<-___

m

(------'

CAUTION:

Make

sure

that

the

blue

tab

on

the

drum

unit

is

returned

to

the

home

position

(A

mark

position)

before

re

-installing

the

drum

unit

into

the

printer,

or

printed

pages

may

have

vertical

stripes.

5)

Re

-install

the

drum

unit

into

the

printer.

6)

Close

the

front

cover.

3.3

Cleaning

the

Scanner

Window

When

replacing

the

drum

unit

or

toner

cartridge

with

a

new

one,

be

sure

to

clean

the

scanner

window.

1)

Turn

off

the

power

switch

and

unplug

the

power

cord.

2)

Press

the

cover

release

button,

and

then

open

the

front

cover.

3)

Pull

the

drum

unit

assembly

out

of

the

printer.

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.

4)

Gently

wipe

the

scanner

window

(colored

magenta

in

the

figures

below)

with

a

soft

dry

cloth.

1

Fig.

5-11

5-7

Brother International HL 1850 Service Manual - Page 168

Cleaning, Scanner, Window

Page 168 highlights