Amana ALD10DT P1331001M Service Manual page 19

Troubleshooting Procedures (Electronic Dial Models)
Trouble 3: No microwave oscillation even though oven lamp turns on.
CONDITION
No
microwave
voltage capacitor terminals
oscillation
Check continuity of high voltage
rectifier in forward and backward
Check resistance of primary and
secondary coil of high voltage
Check continuity of magnetron
Check continuity of filament
supplied to RELAY (RY1) coil
©2009 ACP Inc.
CHECK
Check continuity of high
with wires removed
direction with DC megger
Connect megger leads to
magnetron terminal and
magnetron body
transformer
with wires removed
terminal of high voltage
transformer
Check D.C. voltage being
RESULT
Continuity
Continuity in
backward
direction
Continuity
0 or
No
Continuity
No
Continuity
0 V
Approx
15 VDC
16400005
CAUSE REMEDY
Defective high
voltage
transformer
Defective high
voltage rectifier
Defective
magnetron
Defective high
voltage
transformer
Defective
magnetron
Defective high
voltage
transformer
Defective touch
control circuit
Faulty
contacts or
RELAY (RY1)
or open
relay coil
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Replace
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