Brother International HL-3400CN Service Manual - Page 259

CHAPTER

7

DISASSEMBL

Y

&

RE

-ASSEMBLY

PR2000046

4.7.3

Fusing

heater

lamp

(

using

heater

3

(US)(EC

)

(1)

Remove

the

fixing

screw

ST3x6

(2

pcs.)

and

slide

the

F

cover

(B)

to

the

right

to remove

it.

(2)

Remove

the

fixing

screws

with

washer

M3x6

(2

pc.)

from

securing

the

two

heater

harnesses.

(1st

and

3rd

harnesses

from

the

left

hand

side.)

Remove

the

fixing

screws

ST3x6

(4

pcs.)

to

remove

the

heater

support

(HR/BR)

at

the

right

hand

side.

Remove

the

screw

with

washer

M3x6

from

the

heater

electrode

plate

of

each

lamp.

Pull

out

the

fusing

heater

lamps

from

the

inside

of

the

back-up

roller

and

fuser

roller.

(

3

)

(4)

(

5

)

Terminal

(L)

Heater

support

(HR)

F

cover

(B)

er-

Heater

harness

Heater

support

(BR)

Fusing

heater

lamp

J

Fig.

7-83

Heater

electrode

plate

A

PRECAUTION

•

Do

not

touch

the

surface

of

the

heater

lamp

with

your

hands,

the

small

traces

of

oil

you

leave

on

the

lamp

will

affect

the

life

of

the

lamp.

•

The

wattage

of

the

heater

lamp

is

different

between

the

fuser

roller

and

the

back-up

roller.

The

wattage

is

marked

on

the

insulator

of

the

lamp

electrode.

Fuser

roller:

560W

Back-up

roller

:

420W

NOTE:

When

installing

the

new

fusing

unit

into

the

printer,

you

have

to

wait

approximately

for

30

minutes

after

the

unit

is

installed

to

allow

the

fusing

oil

to

circulate

in

the

unit.

7-54

Brother International HL-3400CN Service Manual - Page 259

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