5-14
(TROUBLE 2) Oven does not operate at all; Display window does not display any figures,
and no input is accepted.
NOTE : All these switches must be replaced at the same time. Refer to page 5-6, 5-7
2. Fuse does not
blow.
No continuity.
No continuity.
Replace power
supply cord.
Defective mag-
netron thermostat.
Defective power
supply cord.
Replace mag-
netron thermostat.
Check continuity
of magnetron
thermostat.
Check continuity
of power supply
cord.
Continuity.
CONDITION
CHECK
RESULT
CAUSE
REMEDY
1. Fuse blows.
Continuity.
No continuity.
Continuity.
Shorted contact at
the primary switch.
Replace primary
and monitor
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 primary
and monitor
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
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Summary of Contents for MH6848G
Page 28: ...MAY000 MFL552 OWNERS MANUAL 6 1 EXPLODED VIEW INTRODUCTION EV MODEL ...
Page 29: ... 6 2 13581A 14970A 14026A 13552A 13213A 14890A 13536A 13720D DOOR PARTS EV ...
Page 30: ... 6 3 23572A 24781M WTP018 268711 24510L 250201 24970A 23506A 23790D CONTROL PANEL PARTS EV ...
Page 32: ... 6 5 43501A 466001 466003 WSZ085 466001 43500A LATCH BOARD PARTS EV ...
Page 34: ... 6 7 63302A WSZ002 WTT021 56170D 63303A 65006B BASE PLATE PARTS EV ...
Page 35: ......
