Wiring Diagram - Anvil MWA1400 Service Manual

(TROUBLE 5) No microwave oscillation even though oven lamp and fan motor run
(Display operates properly)
CONDITION
No microwave Disconnect the
oscillation. wire leads from
relay 2 and
check continuity
of relay2.
(Operate the
unit)
Check H.V.
transformer.
Check H.V.
capacitor.
Check H.V.
diode.
Check
Magnetron.
(TROUBLE 6) Oven does not cook properly when programmed for the set power level
(Operates properly on HIGH)
CONDITION
Output is full when
Disconnect the
you set lower
wire leads from
power level.
relay 2 and check
continuity relay 2.
(Operate the unit)
NOTE: * Make sure the wore leads correct position.
* When removing the wire leads from 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.
CHECK RESULT
No continuity.
Continuity.
Abnormal
normal
Abnormal
normal
Abnormal
normal
Abnormal
CHECK RESULT
Abnormal.
CAUSE
Defective P.C.B
assembly
Defective high
voltage
transformer.
Defective high
voltage capacitor.
Defective high
voltage Diode.
Defective
magnetron.
CAUSE
Defective P.C.B.
assembly.
24
REMEDY
Replace P.C.B
assembly
Replace high
voltage
transformer .
Replace high
voltage capacitor.
Replace high
voltage Diode.
Replace
magnetron .
REMEDY
Replace P.C.B.
assembly.