Electronic Dial Models - Amana ALD10DT P1331001M Service Manual

Troubleshooting Procedures (Electronic Dial Models)
When you get a complaint from customers, evaluate the complaint carefully. If the following symptoms apply, instruct
the customer in the proper use of the microwave oven. This can eliminate an unnecessary service call.
• Verify proper grouding before checking for trouble.
• Be careful of the high voltage circuit.
• Discharge the high voltage capacitor.
• When checking the continuity of the switches or of the high voltage transformer, disconnect one lead wire from
these parts and then check continuity with the AC plug removed. To do otherwise may result in a false reading or
damage to your meter.
• Do not touch any part of the circuit on the controller, since static electric discharge may damage the control
panel. Always touch yourself to earth while working on this panel to discharge any static charge built up in your
body.
Trouble 1: Oven does not operate at all, no inputs can be accepted.
CONDITION
Fuse blows.
Check continuity of interlock
monitor switch with door closed
Replace fuse
Check continuity of of primary
interlock switch contact with door
partially open until interlock
monitor switch contact close
Check continuity of primary
winding of low voltage
transformer
Disconnect one side of the lead
wire connected form high
voltage transformer to the high
voltage capacitor and operate
the unit
©2009 ACP Inc.
!
CAUTION
CHECK
16400005
RESULT
Malfunction of
Continuity
interlock
monitor switch
No Continuity
Shorted
Continuity
contacts of
primary
interlock switch.
0 or infinite
Defective low
voltage
Approx.
transformer
260~320
(normal)
Normal
Defective high
voltage capacitor
Fuse again
Defective high
blows
voltage
transformer
CAUSE REMEDY
Replace
NOTE 1
Replace
NOTE 1
Replace
Replace
Replace
17