LG MA8000ST Service Manual - Page 25

program, times, START, touched., CONDITION, CHECK, RESULT, CAUSE, REMEDY

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program times are set and START pad is touched. CONDITION .Setting time does not count down when touching START pad. CHECK RESULT Chock continuity -7110- o continuity. of secondary switch (with ^^r closed). Continui CAUSE itch. C iptt.k connection-between -Cfsi-t-connector deg dsaen ly. Continui o con inui Defective PCB assembi 2.F oven lamp do Check fan motor. Abnormal Defective fan motor. elective oven amp. REMEDY p ace PCB mbl . tightly. Replace fan motor. ep ace oven amp. (TROUBLE 4) Oven seems tQbe opera CONDITION Output is low. CHECK Check the power source voltage. RESULT CAUSE Lower than 90% of rating voltage. Decrease in source voltages with load. Disconnect the _wire leads from relay 2 and check on and off lime with multitester Abnon -p-. Normal. Measure the output power. Minimum 8.5.0 temperature rise is normal condition. 5-14 assembly Defecti e magnetron. REMEDY Suggest customer_ contact local electric pow( qualified assembly Replace magnetron.

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program
times
are
set
and
START
pad
is
touched.
CONDITION
CHECK
RESULT
CAUSE
REMEDY
.Setting
time
Chock
continuity
does
not
count
of
secondary
down
when
switch
(with
touching
START
^^r
closed).
pad.
-7110-
o
continuity.
itch.
p
ace
Continui
C
iptt.k
con-
nection
-
between
—Cfsi-t-connector
deg
dsaen
ly.
Continui
Defective
PCB
assembi
PCB
mbl
.
o
con
inui
tightly.
2.F
oven
lamp
do
Check
fan
motor.
Abnormal
Defective
fan
motor.
Replace
fan
motor.
elective
oven
amp.
ep
ace
oven
amp.
(TROUBLE
4)
Oven
seems
tQbe
opera
CONDITION
CHECK
RESULT
CAUSE
REMEDY
Output
is
low.
Check
the
power
source
voltage.
Lower
than
90%
of
rating
voltage.
Decrease
in
source
voltages
with
load.
Suggest
customer_
contact
local
electric
pow(
qualified
Disconnect
the
Abnon
_wire
leads
from
relay
2
and
check
on
and
off
lime
assembly
assembly
with
multitester
-p-.
Normal.
Measure
the
output
power.
Defecti
e
Replace
magnetron.
magnetron.
Minimum
8.5
.
0
temperature
rise
is
normal
condition.
5-14