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TROUBLESHOOTING GUIDE
(TROUBLE 6) Microwave Output power is low. First of all, check if output power is really low following " measurement of
the microwave output power" on page 29.
CONDITION
Output power
is low.
NOTE
The following chart shows the timing periods of the RELAY " 1" .
POWER
0
1
2
3
4
5
6
7
8
9
HI
NOTE
Interlock monitor switch must be replaced when fuse is blown out.
CHECK
Check the power
source voltage with
magnetron oscillating
Check the timing
periods of the
RELAY "1" coil
NOTE 2
" 1"
RELAY
ON TIME
0
3 (Seconds)
5
8
11
14
17
20
23
26
29
RESULT
CAUSE
Lower than
Decrese in
108 volts
power source
voltage
Normal
Abnormal
Defective touch
NOTE3
control circuit
Normal
Aging change
of magnetron
26
REMEDY
Customer education
Replace.
Replace depending
on the result of
output test
" 1"
RELAY
OFF TIME
29
26 (Seconds)
24
21
18
15
12
9
6
3
0
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