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STEP
(
SEQUENCE
(
RESULT
(5) PROBLEM
1
I
The magnetron
operates on
high level when a lower cook
power is selected.
b]
H.V.
transformer.
Voltage
cycles
on and off.
I
I
I
I
I
No problem.
Measure water
temperature
rise exactlv.
I
F!!!!!l
m
49-
Touch START
key and
I
Set power level
measure voltage between
@
1:
I .'".
at "50".
white wire lead and black
I
@
wire lead for primary
I
I
I
winding
of H.V.
trans.
former
after removing
the wire leads from
terminals
of H.V,
transformer.
240V
Replace
control
Normal control
;
Runs
circuit
board,
I
Circuit board
,
I
I
I
I
I
1
1
!6) PROBLEM
Qo buzzing by touching
keys
I
I
md at the end of cooking.
I
I
I
J
a
Check normal
operation
of control
circuit
board.
Replace controi
Normat
control
i
Runs
clrcult
board.
circuit
board
I
I
i
I
1
I
I
I
I
1
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