-30-
CONDITION
CHECK
RESULT
CAUSE
REMEDY
(TROUBLE 5) No microwave oscillation even though oven lamp and fan motor run.
(Display operates properly)
No microwave
oscillation.
No continuity.
Continuity.
Disconnect the
wire leads from
relay 2 and
check continuity
of relay2.
(Operate the unit)
Defective PCB
assembly
Defective high
voltage
transformer.
Replace PCB
assembly
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
Replace high
voltage
transformer.
Defective high
voltage capacitor.
Replace high
voltage capacitor.
Abnormal
normal
Check high vol-
tage transformer
Abnormal
normal
Check high vol-
tage capacitor.
Defective high
voltage diode.
Replace high
voltage diode.
Abnormal
normal
Check high vol-
tage diode.
Defective
magnetron.
Replace
magnetron.
Abnormal
Check
Magnetron.
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.
Summary of Contents for 721.62252200
Page 9: ...8 A II SCHEMATIC DIAGRAM Check the Model No ADD Noise filter...
Page 10: ...9 B MATRIX CIRCUIT FOR TOUCH KEY BOARD Figure 4...
Page 34: ...33 2000 2002 2001 2006 2004 2381 W106 EV CONTROL PANEL PARTS MODEL 721 62259 721 62252...
Page 35: ...34 2004 2381 2001 2003 2005 2382 2006 W106 EV CONTROL PANEL PARTS MODEL 721 62253 721 63263...
Page 37: ...36 W102 4002 4000 4003 4002 4004 EV LATCH BOARD PARTS MODEL 721 62259 721 62252...
Page 38: ...37 W102 4002 4003 4002 4000 EV LATCH BOARD PARTS MODEL 721 62253 721 63263...
Page 41: ...40 5008 6000 6001 W108 W101 W109 6002 9001 EV BASE PLATE PARTS...
