Brother International HL-3400CN Service Manual - Page 194

HL-3400CN

SERVICE

MANUAL

4.2

Fusing

Unit

Replacement

Criterion

of

Replacement

The

fusing

unit

should

be

replaced

with

a

new

one

according

to

the

periodical

maintenance

cycle

set

out

in

Table

6-4.

When

the

time

is

due

for

replacement

of

the

fusing

unit,

the

following

message

appears

on

the

control

panel.

LJ

READY

001P

T1

REPLACE

FUSER

Purpose

of

Replacement

To

prevent

the

print

quality

from

declining

due

to

the

deterioration

of

the

fixing

unit's

fuser

rollers.

z

WARNING

The

fusing

unit

and

its

surrounding

area

are

very

hot.

Make

sure

prior

to

starting

the

replacement

work

that

the

fusing

unit

and

its

surrounding

area

are

well

cooled

down,

otherwise

you

may

get

burned.

Necessary

Tools

and

Replacement

Materials

•

Two

or

three

pieces

of

cotton

cloth

for

cleaning

•

Fusing

unit

(one

unit)

Work

Procedure

Sequence

of

Disassembling

(1)

After

turning

off

the

printer,

unplug

the

power

cable

from

the

power

outlet.

(2)

Open

the

top

cover.

(3)

Remove

the

two

screws

securing

the

fusing

unit.

(Fig.6-14)

Screw

Th

Fig.

6-15

(4)

Holding

the

handles

at

both

ends

of

the

fusing

unit

and

remove

the

fusing

unit

from

the

printer.

(Fig.6-15)

(5)

Remove

the

oil

bottle

and

the

fuser

cleaner.

O

Fusing

unit

Fig.

6-16

Screw

6-23

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