LG MA8000ST Service Manual - Page 14

Control, Panel, Assembly

Page 14 highlights

icrowave power output measurement is mace the microwave oven supplied at its rated voltage and ooeldtea dt its maximum microwave ower se in VVI a ioaa o g of potaoie water. e microwave power output in watts is calculate from the following forma ila• P- vessel having a maximum nialena thickness of 3 mni and an outside diameter of approximate y 190 mm. d wh the enerator is temperature prior to the start of the test. operating-at-full-power-Magnetr-Pn-filament-neat-up time is not includec. (about 3 sec) p is measured immediately before the water is added to • The water is stirred to ecualize temperature throughout _ the vessel. After addition of the water to the vessel, tthuernltoaabdieiswihmicmheisd_iiaftte_thlyeplolawceesdt_oonetshteonc_eanntedrthoef the the-vessel prior-to-nleasut-inglhe-final-water temperature. • Stirring devices and measuring instruments are microwave power switched on. selected in or er to minimize addition or removal o • The time T for the temperature of the water to rise by a value AT of (10±2)°K is measured, where T is the time in seconds and AT is the temperature rise. The initial WATFR I OAF) maximum c ifference between t fina water temDerature and the ambient ternDerature is 5°K. TURNTABLE 1) Disconnect the power supply cord from the outlet. 2) Remove the screws from tle rear of the case. e outer case must e movea aacKwarato oe i e ,00 "* securing screw the ground terminal. C. CONTROL PANEL ASSEMBLY 1) Open the door. 2) Remove the screws for the ground and securing the control panel. 3) Disconnect the leadwire from RELAY(RY2) of the PCB SUB ASS'Y. 4) Lift up and pull out control panel assemb y careful y from the cavity. CAUTION: DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE SERVICING (refer to page 2-1) 5-3 Lift up and pull out control panel oe

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icrowave
power
output
measurement
is
mace
e
microwave
power
output
in
watts
is
calculate
the
microwave
oven
supplied
at
its
rated
voltage
and
from
the
following
forma
ila•
ooeldtea
dt
its
maximum
microwave
ower
se
in
VVI
a
ioaa
o
g
of
potaoie
water.
P
vessel
having
a
maximum
nialena
and
an
outside
diameter
of
approximate
thickness
of
3
mni
y
190
mm.
d
wh
the
enerator
is
temperature
prior
to
the
start
of
the
test.
p
is
measured
immediately
before
the
water
is
added
to
operating-at-full-power—Magnetr-Pn-filament-neat-up
time
is
not
includec.
(about
3
sec)
The
water
is
stirred
to
ecualize
temperature
throughout
the-vessel
prior-to-nleasut-inglhe-final-water
the
vessel.
After
addition
of
the
water
to
the
vessel,
the
load
is
immediately
placed
on
the
center
of
the
temperature.
_
turntabiewhichis
_
ift
_
thelowest
_
oeston
_
andthe
Stirring
devices
and
measuring
instruments
are
microwave
power
switched
on.
selected
in
or
er
to
minimize
addition
or
removal
o
The
time
T
for
the
temperature
of
the
water
to
rise
by
a
value
AT
of
(10±2)°K
is
measured,
where
T
is
the
time
in
seconds
and
AT
is
the
temperature
rise.
The
initial
WATFR
I
OAF)
maximum
c
tem
ifference
between
t
Derature
and
the
ambient
tern
fina
water
Derature
is
5°K.
TURNTABLE
1)
Disconnect
the
power
supply
cord
from
the
outlet.
2)
Remove
the
screws
from
t
le
rear
of
the
case.
e
outer
case
must
e
movea
aacKwarato
oe
i
e
,0
0
"*
securing
screw
the
ground terminal.
C.
CONTROL
PANEL
ASSEMBLY
1)
Open
the
door.
2)
Remove
the
screws
for
the
ground
and
securing
the
control
panel.
3)
Disconnect
the
leadwire
from
RELAY(RY2)
of
the
PCB
SUB
ASS'Y.
4)
Lift
up
and
pull
out
control
panel
assemb
from
the
cavity.
Lift
up
and
pull
out
control
panel
y
careful
oe
y
CAUTION:
DISCHARGE
THE
HIGH
VOLTAGE
CAPACITOR
BEFORE
SERVICING
(refer
to
page
2-1)
5-3