LG MA840B Service Manual - Page 24

Cepted., Condition, Check, Result, Cause, Remedy

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-ff-ROUBLF-Py0vPm-does-nnt-epPrate a cepted. CONDITION CHECK 1. Fuse blows. H. - Check continuity of monitor switch (with door cioced) Rep f RESULT Continuity. No continuity CAUSE REMEDY I., Malfunction of the h o. Replace fuse, monitor switch. primary, monitor secondary switches, and RELAY(RY2) of P C B Assembly. Check con inui of primary -switch (with door opened No continuity. Disconnect one side of the wire ad c from transforme he high voltage pacitor an operate the unit Normal ed contact at -the primary switch. Defective hi voltage capacitor. Defective high volt- Replace fuse, primary, monitor,_ secondary switches, and RELAY(RY2) of pCo A Replace high voltage capacitor. Replace high voltage transformer use goes no of thermostat. thermostat. Replace thermostat. Check continuity of power supply No continuity. Defective power supply cord. RAplar:R power y Cora. 5-13

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-ff-ROUBLF-Py0vPm-does-nnt-epPrate
a
cepted.
CONDITION
CHECK
RESULT
1.
Fuse
blows.
H.
-
Check
continuity
of
monitor
switch
(with
door
cioced)
Continuity.
CAUSE
REMEDY
h
o.
I.
,
Malfunction
of
the
monitor
switch.
No
continuity
Rep
f
Check
con
inui
of
primary
—switch
(with
Replace
fuse,
primary,
monitor
seconda
ry
switches,
and
RELAY(RY2)
of
P
C
B
Assembl
y.
ed
contact
at
—the
primary
switch.
door
opened
No
continuity.
Disconnect
one
side
of
the
wire
ad
c
Normal
Defective
hi
Replace
fuse,
primary,
monitor,_
secondary
switches,
and
RELAY(RY2)
of
p
C
o
A
voltage
capacitor.
Replace
high
voltage
capacitor.
from
transforme
he
high
Defective
high
volt
-
voltage
pacitor
an
Replace
high
volt-
age
transformer
operate
the
unit
use
goes
no
of
thermostat.
thermostat.
Replace
thermostat.
Check
continuity
of
power
supply
No
continuity.
Defective
power
supply
cord.
RAplar:R
power
Cora.
y
5-13