LG MA8000ST Service Manual - Page 19

Components, Procedure, Results

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-CAUTIONS 1 DISCONNECT THE POWER SUPPLY CORD FROM THE OUTLET WHENEVER REMOVING THE OUTER GAS O UNIT OC WITH THE TESTONI Y AFTER I'IISCHARGING THE HIGH VOLTAGE CAPACITOR AND REMOVING THE WIRELEADS-F-ROM-T-I4E-PRIMARY-WINDING-OF-TH-E- E 22 Al L OPERATIONAL CHFCKS WITH MICROWAVE ENERGY MUST BE DONF WITH A LOAD (1 LITFR OF WATER IN CONTAINER) IN THE OVEN COMPONENTS HIGH VOLTAGE ire leads remove TEST PROCEDURE FILAMENT WINDING RESULTS NDARY TERMINAL PRIMARY easure meter scale: Rx1 and Rx100 • Primary winding econdary windin • Filament winding 2. Measure the resistance. Ohm-FeeteFscale. RA1000) • Primanpatinding to ground • Filament winding to gro the resistarc Ohm-meter scale. lamurettermine a (Ohm-meter_scale• Rx1000) • Filament to chassis Approx.. 0.3 0.8 oh Less tha • 1 oh Normal: Infinite Normal. Infinite

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-CAUTIONS
1
DISCONNECT
THE
POWER
SUPPLY
CORD
FROM
THE
OUTLET
WHENEVER
REMOVING
THE
OUTER
GAS
O
UNIT
OC
WITH
THE
TESTONI
Y
AFTER
I'IISCHARGING
THE
HIGH
VOLTAGE
CAPACITOR
AND
REMOVING
THE
WIRELEADS
-
F
-
ROM
-
T
-
I4E
-
PRIMARY
-
WINDING
-
OF
-
TH
-
E
-
E
2-
2
Al
L
OPERATIONAL
CHFCKS
WITH
MICROWAVE
ENERGY
MUST
BE
DONF
WITH
A
LOAD
(1
LITFR
OF
WATER
IN
CONTAINER)
IN
THE
OVEN
COMPONENTS
TEST
PROCEDURE
RESULTS
HIGH
VOLTAGE
ire
leads
remove
FILAMENT
WINDING
NDARY
TERMINAL
PRIMARY
easure
meter
scale:
Rx1
and
Rx100
•
Primary
winding
Approx..
0.3
0.8
oh
econdary
windin
•
Filament
winding
Less
tha
•
1
oh
2.
Measure
the
resistance.
Ohm-FeeteFscale.
RA1000)
•
Primanpatinding
to
ground
Normal:
Infinite
•
Filament
winding
to
gro
Normal
.
Infinite
the
resistarc
Ohm
-meter
scale
.
lamurettermine
a
(Ohm-meter_scale•
Rx1000)
•
Filament
to
chassis