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(TROUBLE 2) Oven does not at all even thought MOTOR and P.C.B program.
CONDITION
No input can be
programmed.
Some inputs can not be
programmed.
Display shows a number or
figure different from one
touched.
Random programming when
pressing other than touch
keys.
Display fixes some figure and
can not accept any input.
Set time does not count
down when touched START.
CAUSE
Defective tact switch key of
P.C.B.
Loose connection.
Incorrect touch key.
Defective secondary switch
or out of adjustment
Defective tact switch key of
P.C.B.
Loose connection.
5-15
TEST PROCEDURE OR
CORRECTION
Test procedure tact switch
key of P.C.B.
Connect them tightly.
Touch key again after
closing.
Test procedure secondary
switch.
Test procedure tact switch
key of P.C.B.
Test tact switch key of
P.C.B.
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