-28-
2. Fuse does not
blow.
No continuity.
No continuity.
Replace power
supply cord.
Defective
thermostat.
Defective power
supply cord.
Replace
thermostat.
Check continuity
of 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 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
(TROUBLE 2) Oven does not operate at all and Display window does not display any figures and no input is accepted.
Summary of Contents for 721.66312500
Page 9: ...8 B MATRIX CIRCUIT FOR TOUCH KEY BOARD Figure 4...
Page 33: ...32 1001 1000 1004 1002 1006 1007 1005 1003 EV DOOR PARTS...
Page 34: ...33 2000 2002 2006 W106 2004 2381 EV CONTROL PANEL PARTS...
Page 36: ...35 W102 4003 5015 4002 4002 4000 EV LATCH BOARD PARTS...
Page 38: ...37 W101 W108 6007 5008 6000 6001 EV BASE PLATE PARTS...
