STEP
SEQUENCE
RESULT
(5) PROBLEM
The magnetron operates on
high level when a lower cook
power is selected.
a
0 230
0 Volt
0 230
230 Volt
No problem
Measure water
temperature rise
exactly.
Replace control
circuit board.
Normal control
circuit board
Replace control
circuit board.
(6) PROBLEM
Unit does not heat up even
if display counts down when
key is touched for
"Grill Cooking".
a
Normal control
circuit board
Replace Heater
∞
52
Normal
Resistance.
0
∞
Resistance
Incorrect.
Runs
1
0
0
1
5
0
4
5
0
7
0
0
8
5
0
A
u
t
o
S
t
a
r
t
D
e
f
.
T
i
m
e
1
0
0
0
Check resistance of
heater.
Approximately 48.7Ω
measured over
both terminals.
Set power level
at low.
Touch START key and measure
voltage between leads for
primary winding of H.V transformer
after removing the wire leads from
terminals of H.V transformer.
-13-
Normal Heater
Runs
Runs
E
M
-
S
3
5
0
OVEN
TEMP.
SLOW
COOK
AUTO
MIN
SEC
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