5-16
(TROUBLE 5) No microwave oscillation even though oven lamp and fan motor run.
(Display operates properly)
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 relay 2.
(Operate the unit)
Normal
Normal
Abnormal
Defective high
voltage capacitor.
Replace high
voltage capacitor.
Check high vol-
tage capacitor.
Abnormal
Defective high
voltage
transformer.
Replace high
voltage
transformer.
Check high vol-
tage transformer.
Abnormal
Defective high
voltage diode.
Replace high
voltage diode.
Check high vol-
tage diode.
Normal
Abnormal
Defective
magnetron.
Replace
magnetron.
Check
magnetron.
Summary of Contents for MH-1446SQP
Page 9: ...SCHEMATIC DIAGRAM 4 3 ...
Page 28: ...6 1 EXPLODED VIEW INTRODUCTION MODEL MH 1446SQP EV ...
Page 29: ...6 2 13213A 13552A 15006A 13581A 13536A 14026A 14970A 13720D 14890A DOOR PARTS EV ...
Page 30: ...6 3 23572A 24781M WTP018 268711 24510L 250201 24970A 23506A CONTROL PANEL PARTS EV ...
Page 32: ...6 5 43501A WSZ085 466001 466001 466003 43500A LATCH BOARD PARTS EV ...
Page 34: ...6 7 WTT021 63302A 63303A 56170D WSZ002 948502 65006B BASE PLATE PARTS EV ...
Page 35: ......