Daewoo KOG-261M, Service Manual

Page: 34 / 57

(TROUBLE 6) Micrwave Output power is low .
First of all, check if output power is really low following “measurement
of the microwave output power” on page 34.
POWER
0
1
2
3
4
5
6
7
8
9
HI
RELAY “1” ON TIME
0
3 (Seconds)
5
8
11
14
17
20
23
26
29
RELAY “1” OFF TIME
29
26 (Seconds)
24
21
18
15
12
9
6
3
0
33
Check Result
Cause Cause
Customer
education
Check the power
source voltage
with magnetron
oscillating
Condition
Output
power is low. Lower than
108 volts Descrease in
power source
voltage
Normal
Replace
Check the timing
periods of the
RELAY “1” coil Abnormal
NOTE 3
Defective touch
control circuit
Replace depend-
ing on the result of
output test
Normal
Aging change
of
magnetron
NOTE 2:
The following chart shows the timing periods of the RELAY “1”.
NOTE 3:
Interlock monitor switch must be replaced when fuse is blown out.