LG MA8000ST Service Manual - Page 21

Components, Procedur

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COMPONENTS RELAY 2 TEST PROCEDUR check for continuity of relay 2 with an ohm-meter. (Remove wire leads from relay 2 and operate the unit.) Rela I-AN MOTOR (Wire leads removed y -Measure the resistance. (Ohm-meter scale: R x 100) ACRD) El4 LEVEL 4 sec 18 sec 2 6 16 sec sec 5 12 sec 10 sec sec sec 7 16 sec 6 sec 9 20 sec 2 sec 10 22 sec 0 sec Normal: -B : Approx.GC, - 80 ohm B C • ADnrox in AO ahm A-C : Approx,85 - 105 ohm Abnormal: Infinitc or scveral oh TURNTABLE MOTOR (Wire leads removed) Moacure tho rosistanco. (Ohm-meter scale;- 000) Normal: Approx. 100 - 150 oh Abnormal: Infinite or several ohm. NOTE • • A MICROWAVE LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS 'ON. - MAKE SURE THE WIRE LEADS ARE IN THE CORRECT POSITION. • WHEN HEMOVING I Ht WIFit LEADS I-HOM I Ht PAH I S. SUlit 1O GHASI' I Ht CONNECTOR, NOT THE WIRES. 5-10

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COMPONENTS
TEST
PROCEDUR
RELAY
2
check
for
continuity
of
relay
2
with
an
ohm
-meter.
(Remove
wire
leads
from
relay
2
and
operate
the
unit.)
Rela
LEVEL
2
4
sec
6
sec
18
sec
16
sec
5
12
sec
10
sec
7
sec
16
sec
sec
6
sec
9
10
20
sec
22
sec
2
sec
0
sec
y
I
-AN
MOTOR
—
Measure
the
resistance.
(Wire
leads
removed
(Ohm
-meter
scale:
R
x
100)
Normal:
-B
:
Approx.GC,
-
80
ohm
B
C
•
ADnrox
in
AO
ahm
A
-C
:
Approx,85
-
105
ohm
ACRD)
El4
Abnormal:
Infinitc
or
scveral
oh
TURNTABLE
MOTOR
(Wire
leads
removed)
Moacure
tho
rosistanco.
(Ohm
-meter
scale;
-
000)
Normal:
Approx.
100
-
150
oh
Abnormal:
Infinite
or
several
ohm.
NOTE
•
•
A
MICROWAVE
LEAKAGE
TEST
MUST
ALWAYS
BE
PERFORMED
WHEN
THE
UNIT
IS
'ON.
-
MAKE
SURE
THE
WIRE
LEADS
ARE
IN
THE
CORRECT
POSITION.
•
WHEN
HEMOVING
I
Ht
WIFit
LEADS
I-HOM
I
Ht
PAH
I
S.
SUlit
1O
GHASI'
I
Ht
CONNECTOR,
NOT
THE
WIRES.
5-10