LG MA748W 01 Service Manual - Page 21

COMPONENTS

TEST

PROCEDURE

RESULTS

RELAY

2

Check

for

continuity

of

relay

2

with

an

ohm

-meter.

(Remov

p

POWER

LEVEL

rate

the

nit

1

4

sec

18

sec

2

6

sec

16

sec

Relay

1

3

8

sec

4

10

sec

5

12

sec

14

sec

12

sec

10

sec

O0

O

7

16

sec

8

18

sec

9

20

sec

8

sec

6

sec

4

sec

2

sec

10

22

sec

0

sec

Rclay

2

FAN

MOTOR

-Measure

the

-resistance.

Normal:

(Wire

learis

-

reninved)

Ohm

-meter

•

x

A

-B_;

Approx

65

80

oh

A

(RD

)

8

(Mt)

B-C

-

:

-

Approx.

o

A

Appiox

85

-

105

ohm

;

4

Tik\—'•

,ov•war'"

C(WH)

O

Abnormal.

Infinite

or

several

ohm.

TURNTABLE

MOTOR

(Wire

leads

removed)

Measure

the

resistance.

Normal:

Approx.

100

-

150

ohm

(Ohm

-meter

scale:

fl

x

1000)

Abnormal.

Infinitu

or

several

ohm.

NOTE

.

•

A

MICROWAVE

LEAKAGE

TEST

MUST

ALWAYS

BE

PERFORMED

WHEN

THE

UNIT

IS

SERVICED

FOR

ANY

REASON

-

MAKF

SURF

THF

WIRF

LFADS

ARF

IN

THF

CORRFCT

POSITION

•

WHEN

HbMOVING

I

HE

WIHE

LEADS

I-HOM

I

HE

PAH

I

S,

lit

SUHE

I

O

GHASI-

1

I

HE

CONNECTOR,

NOT

THE

WIRES

5-10

LG MA748W 01 Service Manual - Page 21

LG MA748W 01 Manual

Page 21 highlights