-28-
CONDITION
CHECK
RESULT
CAUSE
REMEDY
1. Fuse blows.
Continuity.
No continuity.
Continuity.
Shorted contact at
the primary switch.
Replace fuse,
primary, monitor
switches, and
RELAY of P.C.B
Assembly.
No continuity.
Normal.
Defective control
PCB.
Replace Inverter.
Fuse blows again
Defective Inverter.
Replace control
PCB.
Malfunction of the
monitor switch.
Replace fuse,
primary, monitor
switches, and
RELAY of P.C.B
Assembly.
Check continuity
of monitor
switch (with
door closed).
Check continuity
of primary
switch (with
door opened).
Disconnect one
side of the lead
wires connected
from Inverter.
Replace fuse
2. Fuse does not
blow.
No continuity.
Continuity.
No continuity.
Defective power
supply cord.
Replace power
supply cord.
Defective
thermostat.
Replace
thermostat.
Check continuity
of thermostat.
Check continuity
of power supply
cord.
(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 18, 19
Summary of Contents for LRMM1430SB
Page 8: ...6 OVERALL CIRCUIT DIAGRAM A SCHEMATIC DIAGRAM 7 Figure 3 ...
Page 9: ...B MATRIX CIRCUIT FOR TOUCH KEY BOARD 8 Figure 4 ...
Page 32: ... 31 INTRODUCTION EXPLODED VIEW ...
Page 34: ... 33 CONTROLLER PARTS 268711 WTP002 23506A 13551A ...
Page 36: ... 35 LATCH BOARD PARTS WSZ085 43500A 466001 43501A 466003 466001 ...
Page 37: ... 36 OVEN INTERIOR PARTS WTT028 WTT021 54974T 56501A 56930V 56912B 43500A 56324A WSZ002 ...
Page 43: ... 42 SCHEMATIC DIAGRAM OF P C B ...
