LG MA748W 01 Service Manual - Page 24

input, accepted.

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and no input is accepted. CONDITION use blows. CHECK heck conthul of monitor Switch (WI door qed Replace fu RESULT ontinuity. No continuity Check continuit Ff=primucry -switch4with dooroaened Continuity. No continuity. Disconnect one -Ro• side of the wire lead connec -from transformer to the high -voltage pacitor a operate the unit Normal use blows agai • CAUSE Malfunction of the monitor switch. REMEDY piece ruse, IM , secondary switches, and RELAY(RY2) of P.C.B Ascembly. Shorted contact at the primary switch: Defective h voltage capacitor. Replace fuse, pr imary,-nionito secondary switchesTared- RELAY(RY2) of P.C.B Assembi Replace high voltage capacitor. age transformer-age transformer use goes no f th Check continuity of power supply p h nvvRr .phr-R pnwRr supply cord. DP- supply cord. 5-13

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and
no
input
is
accepted.
CONDITION
CHECK
RESULT
CAUSE
REMEDY
heck
conthul
Malfunction
of
the
piece
ruse,
use
blows.
ontinuity.
of
monitor
monitor
switch.
IM
,
secondary
Switch
(WI
door
qed
switches,
and
No
continuity
RELAY(RY2)
of
P.C.B
Ascembly.
Replace
fu
Check
continuit
Ff=primucry
—switch4with
Continuity.
Shorted
contact
at
Replace
fuse,
pr
imary,-nionito
the
primary
switch:
secondary
dooroaened
No
continuity.
switchesTared
—
RELAY(RY2)
of
P.C.B
Assembi
Disconnect
one
side
of
the
wire
lead
connec
Normal
Defective
h
voltage
capacitor.
Replace
high
voltage
capacitor.
—from
transformer
to
the
high
-v
oltage
pacitor
a
use
blows
agai
age
transformer
-age
transformer
operate
the
unit
use
goes
no
f
th
h
p
Check
continuity
of
power
supply
nvvRr
supply
cord.
DP-
.phr-R
pnwRr
supply
cord.
5-13