LG MA8000ST Service Manual - Page 15

Gross, Assembly, Removal, Voltage, Transformer, Motor, Capacitor, Diode

Page 15 highlights

D. DOOR GROSS ASSEMBLY REMOVAL (1) Open the door. (2) Life up and draw the door CAUTION : Be careful not to damage door seal plate with the screwdriver. NOTE: 1. After replacing the door, be sure to check that the primary switch, monitor switch, and secondary switch operate normally. 2. After replacing the door, check for microwave energy leakage with a survey meter. Microwave energy must be below the limit of 5 mW/cm2. (with a 275 ml water load) 3. When mounting the door assembly to the oven assembly, be sure to adjust the door assembly parallel to the chassis. Also adjust so the door has no play between the inner door surface and oven frame assembly. If the door assembly is not mounted properly, microwaves may leak from the clearance between the door and the oven. Remove door assembly E. HIGH VOLTAGE TRANSFORMER REMOVAL 1) Discharge the high voltage capacitor. 2) Disconnect the leadwire from magnetron, high voltage transformer, and capacitor. 3) Remove the screw holding the high voltage transformer to the baseplate. F. FAN MOTOR ASSEMBLY REMOVAL 1) Discharge the high voltage capacitor. 2) Disconnect the leadwire from fan motor, and high voltage capacitor. 3) Remove the two screws holding the the suction guide ASS'Y to the oven cavity and remove the high voltage diode earth screw. 4) Remove the two screws holding the fan motor ASS'Y to the suction guide ASS'Y. G. HIGH VOLTAGE CAPACITOR AND DIODE REMOVAL 1) Discharge the high voltage capacitor. 2) Disconnect the leadwire from fan motor, and high voltage capacitor. 3) Remove the screw holding the suction guide ASS'Y to the oven cavity and remove the high voltage diode earth screw. 4) Remove the screw holding the high voltage capacitor bracket. Fan Motor ASS'Y IqpA ••'44 ,o• • P5' Suction -"1, Guide H.V. Capacitor H.V. Transformer H.V. Diode say • 5-4

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D.
DOOR
GROSS
ASSEMBLY
REMOVAL
(1)
Open
the
door.
(2)
Life
up
and
draw
the
door
CAUTION
:
Be
careful
not
to
damage
door
seal
plate
with
the
screwdriver.
NOTE:
1.
After
replacing
the
door,
be
sure
to
check
that
the
primary
switch,
monitor
switch,
and
secondary
switch
operate
normally.
2.
After
replacing
the
door,
check
for
microwave
energy
leakage
with
a
survey
meter.
Microwave
energy
must
be
below
the
limit
of
5
mW/cm
2
.
(with
a
275
ml
water
load)
3.
When
mounting
the
door
assembly
to
the
oven
assembly,
be
sure
to
adjust
the
door
assembly
parallel
to
the
chassis.
Also
adjust
so
the
door
has
no
play
between
the
inner
door
surface
and
oven
frame
assembly.
If
the
door
assembly
is
not
mounted
properly,
microwaves
may
leak
from
the
clearance
between
the
door
and
the
oven.
Remove
door
assembly
5-4
E.
HIGH
VOLTAGE
TRANSFORMER
REMOVAL
1)
Discharge
the
high
voltage
capacitor.
2)
Disconnect
the
leadwire
from
magnetron,
high
voltage
transformer,
and
capacitor.
3)
Remove
the
screw
holding
the
high
voltage
transformer
to
the
baseplate.
F.
FAN
MOTOR
ASSEMBLY
REMOVAL
1)
Discharge
the
high
voltage
capacitor.
2)
Disconnect
the
leadwire
from
fan
motor,
and
high
voltage
capacitor.
3)
Remove
the
two
screws
holding
the
the
suction
guide
ASS'Y
to
the
oven
cavity
and
remove
the
high
voltage
diode
earth
screw.
4)
Remove
the
two
screws
holding
the
fan
motor
ASS'Y
to
the
suction
guide
ASS'Y.
G.
HIGH
VOLTAGE
CAPACITOR
AND
DIODE
REMOVAL
1)
Discharge
the
high
voltage
capacitor.
2)
Disconnect
the
leadwire
from
fan
motor,
and
high
voltage
capacitor.
3)
Remove
the
screw
holding
the
suction
guide
ASS'Y
to
the
oven
cavity
and
remove
the
high
voltage
diode
earth
screw.
4)
Remove
the
screw
holding
the
high
voltage
capacitor
bracket.
,o•
P
5
'
H.V.
Transformer
Fan
Motor
ASS'Y
Iq
pA
'4
4
Suction
-
"
1
,
Guide
H.V.
Capacitor
say
H.V.
Diode