46
(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 26.
Condition
Check
Result
Cause
Remedy
Output power
is low.
Check the power
source voltage with
magnetron oscillating
Lower than
207 volts
Normal
Decrease in
power source
voltage.
Customer education
Check the timing
periods of the RELAY
“1” coil
Abnormal
Defective touch
control circuit
Replace
Normal
Aging change
of magnetron.
Replace depending
on the result of
output test.
NOTE 2
NOTE2 : The following chart shows the timing periods of the RELAY “1”.
NOTE3 : Interlock monitor switch must be replaced when fuse is blown out.
POWER
RELAY “1” ON TIME
RELAY “1” OFF TIME
0
0 (Seconds)
29 (Seconds)
1
3
26
2
5
24
3
8
21
4
11
18
5
14
15
6
17
12
7
20
9
8
23
6
9
26
3
HI
29
0
NOTE 3
