Brother International HL-3400CN Service Manual - Page 208

CHAPTER

7

DISASSEMBL

Y

&

RE

-ASSEMBLY

CHAPTER

7

DISASSEMBLY

&

RE

-ASSEMBLY

1.

BEFORE

STARTING

DISASSEMBLY

1.1

Precautions

Follow

the

precautions

described

below

during

maintenance

work.

(1)

Do

not

implement

any

operation,

disassembly

or

modification

which

is

not

set

out

in

this

manual.

(2)

This

printer

incorporates

dangerous

parts

subject

to

warnings

such

as

"High

Temperature",

"High

Voltage"

and

"Laser

Radiation".

Before

starting

any

work

on

this

printer,

make

sure

you

have

read

and

understand

the

warnings

set

out

in

this

manual.

(3)

Collect

and

dispose

of

any

waste

toner

cartridges

removed

during

maintenance

correctly

in

accordance

with

local

regulations.

Do

not

dispose

of

them

with

inflammable

materials

or

dispose

of

them

into

a

fire.

(4)

The

grounding

wire

is

disconnected

when

replacing

or

removing

the

DC

power

supply

unit.

After

completing

the

replacement

work,

confirm

that

the

grounding

wire

is

reconnected

correctly

to

the

earth

mark

(4)

.

(5)

Ensure

that

the

type

and

length

of

screws

removed

during

replacement

of

maintenance

parts

is

noted

and

the

correct

screws

are

used

during

re

-assembly.

(See

Table

7-1.)

(6)

Do

not

use

any

solvent

such

as

alcohol

for

the

maintenance

of

this

printer.

(7)

Confirm

that

all

the

parts

and

covers

are

installed

or

assembled

correctly

before

starting

the

test

run

after

replacement

of

maintenance

parts.

(8)

The

re

-assembly

order

is

the

reverse

of

the

dis-assembly

order.

In

all

cases,

follow

the

flow

chart

in

reverse

to

re

-assemble

the

printer.

Where

there

is

any

change

to

the

order,

this

is

noted

in

the

relevant

section.

1.2

Preparation

of

Disassembly

Follow

the

procedure

described

below

for

preparation

before

commencing

any

work.

(1)

Ensure

that

the

power

cable

is

disconnected

from

the

power

outlet.

(2)

Remove

all

consumable

parts

(OPC

belt

cartridge,

fuser

cleaner,

oil

bottle,

all

toner

cartridges,

ozone

filter),

the

Main

(Video

controller)

PCB,

Fusing

unit

and

Fuser

cleaner,

and

then

store

them

correctly

before

starting

disassembly.

A

•

Do

not

directly

touch

the

OPC

belt

surface

with

bare

hands

or

gloves.

PRECAUTION

•

If

the

belt

is

exposed

for

more

than

two

minutes

to

a

light

source

of

800

lux,

the

belt

may

be

damaged.

7-4

Brother International HL-3400CN Service Manual - Page 208

Disassembly, Assembly

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