-27-
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(RY2) of
P.C.B Assembly.
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
switches, and
RELAY(RY2) 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 wire
lead connected
from transformer
to the high
voltage
capacitor and
operate the unit.
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.
Summary of Contents for 721.66339
Page 9: ...B MATRIX CIRCUIT FOR TOUCH KEY BOARD 8 Figure 4...
Page 32: ...31 DOOR PARTS 1004 1000 1005 1007 1006 1002 1013 1003 1001 EV...
Page 33: ...32 CONTROLLER PARTS 2000 2002 2006 W106 2004 2381 EV...
Page 34: ...33 OVEN CAVITY PARTS 3002 W107 W103 3001 3003 3008 3009 W105 3034 EV...
Page 35: ...34 LATCH BOARD PARTS W102 4002 4003 4002 4004 4000 4001 EV...
Page 37: ...36 BASE PLATE PARTS 5008 W101 W108 6000 6007 6001 EV...
