LG MA8000ST Service Manual - Page 18

WARNING

•

FOR

CONTINUED

PROTECTION

AGAINST

EXCESSIVE

RADIATION

EMISSION,

REPLACE

ONLY

WITH

IDENTICAL

REPLACEMENT

PARTS

TYPE

NO.

SZM-V

1G

-FA

-63

OR

VP

-533A

-Or

FOR

PRIMARY

SWITCH

TYPF

NO

S7M

V

16

FA

62

OR

VP

532A

OF

FOR

MONITOR

SWITCH

TYPE

NO.

SZM-V

16

-FA

-63

OR

VP

-533A

-OF

FOR

SECONDARY

SWITCH

When

the

door

release

button

is

depressed

slowly

Disconnect

the

wire

lead

from

the

seconda'

with

the

door

c

osed,

an

audible

click

should

be

switch

heard

at

the

same

time

or

successively

at

Connect

the

ohmmeter

leads

to

the

common

latches

should

activate

the

switches

with

an

audib

e

click

switch

The

meter

should

indicate

a

open

circuit

in

the

door

open

condition

When

the

door

is

closed,

If

the

atchcs

do

not

activate

the

switches

when

meter

should

indicate

an

closed

circuit.

When

the

adjusted

in

accordance

with

the

adjustment

procedure.

Disconnect

the

wire

lead

from

the

primary

switc

the

common

(COM)

and

normally

open

(NO)

terminal

of

the

switch

The

meter

should

indicate

Connect

the

o

immeter

eads

to

necessary

adjustment

or

replace

the

switch

only

with

the

same

type

of

switch.

an

open

circuit

in

the

door

open

condition.

When

the

door

is

closed,

tie

meter

should

indicate

a

closed

circuit

C.

MONITOR

SWITCH

TEST

Disconnect

the

wire

lead

from

the

monitor

switch.

When

the

primary

switch

operation

is

abnormal,

make

the

necessary

adjustment

or

replace

the

switch

only

with

the

same

type

of

switch

Connect

the

ohmmeter

leads

to

the

common

(COM)

and

normally

closed

(NC)

terminals

of

the

switch.

The

meter

should

indicate

closed

circuit

in

the

door

open

condition.

When

the

door

is

closed,

meter

should

indicate

an

open

circuit.

When

the

monitor

switch

operation

is

aonormal,

replace

with

the

same

type

of

switch.

NOTE.

After

repairing

the

door

or

the

interlock

test

before

operating

the

oven

COMPONENTS

TEST

PROCEDURE

RESULTS

SWITCHES

(Wire

leads

removed)

Check

for

continuity

of

the

switch

with

an

Ohm

meter

Door

open

Door

closed

Primary

Switch

0

0

Monitor

(-1

Switch

0

Secondary

Switch

rTh

NOTE

•

After

chec

King

for

the

continuity

of

switches,

make

sure

that

they

are

connected

correctly.

5-7

LG MA8000ST Service Manual - Page 18

Components

Page 18 highlights