-31-
CONDITION
CHECK
RESULT
CAUSE
REMEDY
No microwave
oscillation.
No continuity.
Continuity.
Defective PCB
assembly.
Replace PCB
assembly.
Disconnect the
wire leads from
relay 2 and
check continuity
of relay2.
(Operate the unit)
Abnormal
Normal
Defective high
voltage
transformer.
Replace high
voltage
transformer.
Check high vol-
tage transformer
Normal
Normal
Abnormal
Defective high
voltage diode.
Replace high
voltage diode.
Check high vol-
tage diode
Abnormal
Defective high
voltage capacitor.
Replace high
voltage capacitor.
Check high vol-
tage capacitor
Abnormal
Defective
magnetron.
Replace
magnetron.
Check
magnetron.
(TROUBLE 5) No microwave oscillation even though oven lamp and fan motor run.
(Display operates properly)
NOTE : • Make sure the wire leads correct position.
• When Removing the wire leads from the parts, be sure to grasp the connector, not the wires.
• When removing the magnetron, be sure to install the magnetron gasket in the correct position
and in good condition.
Output is full power
when you set lower
power level.
Abnormal.
Disconnect the
wire leads from
relay 2 and check
continuity relay 2.
(Operate the unit)
Defective PCB
assembly.
Replace PCB
assembly.
Summary of Contents for 721.62342200
Page 10: ...9 B MATRIX CIRCUIT FOR TOUCH KEY BOARD Figure 4...
Page 34: ...33 1001 1000 1004 1002 1006 1007 1005 1003 EV DOOR PARTS...
Page 35: ...34 2000 2002 2001 2006 W106 2004 2381 EV CONTROL PANEL PARTS...
Page 36: ...35 3034 3003 W105 3009 3002 3008 3001 W103 W118 EV OVEN CAVITY PARTS...
Page 37: ...36 W102 4003 5015 4002 4002 4000 EV LATCH BOARD PARTS...
Page 40: ...39 W101 W108 6007 5008 6000 6001 9000 EV BASE PLATE PARTS...
