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LG MB-393T User Manual

LG MB-393T
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5-13
CONDITION CHECK RESULT CAUSE REMEDY
1. Fuse blows. Continuity.
No continuity.
Continuity.
Shorted contact at
the primary switch.
Replace fuse,
primary, monitor
and secondary
switches.
No continuity.
Normal.
Defective high
voltage capacitor.
Replace high
voltage capacitor.
Fuse blows again
Defective high volt-
age transformer.
Replace high volt-
age transformer.
Malfunction of the
monitor switch.
Replace fuse,
primary, monitor
and secondary
switches.
Check continuity
of monitor
switch (with
door closed).
Check continuity
of primary
switch (with
door opened).
Disconnect one
side of the wire
lead connected
from transformer
to the high
voltage
capacitor and
operate the unit.
Replace fuse
1. Oven does not
operate.
No continuity.
No continuity.
Adjust or replace.
Malfunction of the
primary switch.
Malfunction of the
secondary switch.
Adjust or replace.
Check the
continuity of the
primary switch
with door
closed.
Check the
continuity of the
secondary
switch with
secondary
switch pushed.
(TROUBLE 1)
Oven lamp does not turn on when the timer knob is pushed with door closed.
(TROUBLE 2)
Oven does not start even though the timer is set.
NOTE : All these switches must be replaced at the same time.
This fuse is a special type of fuse which is kept as spare part by the importer.
CONDITION CHECK RESULT CAUSE REMEDY

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LG MB-393T Specifications

General IconGeneral
BrandLG
ModelMB-393T
CategoryMicrowave Oven
LanguageEnglish

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