SJFS810VWH
15
Varistor
Normal (over approx.1.5MΩ)
Damage
Fuse
Melting
Flow of excessive current is considerable for
some reasons.
Check for any portion to cause short circuits
especially on the primary circuit.
There is a possibility of excessive voltage applied from outside
with the factor such as thunder etc.
When repeated with a factor other than thunder, there might be
the apparatus near by generating noises.
Conduction
Fuse and varistor are normal.
Possibility to be caused by excessive current
or voltage near the power supply is low.
Proceed to the other check item.
4. Check whether the temperature (resistance value) shown by R-thermistor is correct or not. (Refer to the table
below.)
•
Detach the connector “CN8” on the PWB and measure the resistance between 16 and 18 pins of harness side.
5. Check whether the temperature (resistance value) shown by Def-thermistor is correct or not. (Refer to the table
below.)
•
Detach the connector “CN7” on the PWB and measure the resistance value between 3 and 4 pins of harness side.
6. Check whether the temperature (resistance value) shown by F-thermistor is correct or not. (Refer to the table
below.)
•
Detach the connector “CN7” on the PWB and measure the resistance value between 1 and 2 pins of harness side.
5. CONVERSION TABLE BETWEEN TEMPERATURE AND RESISTANCE VALUE
1) R-thermistor, F-thermistor
Temperature
(°C)
Resistance Value
(KΩ)
Temperature
(°C)
Resistance Value
(KΩ)
Temperature
(°C)
Resistance Value
(KΩ)
-25
26.1
-9
10.3
7
4.5
-24
24.5
-8
9.8
8
4.3
-23
23.1
-7
9.2
9
4.1
-22
21.7
-6
8.8
10
3.9
-21
20.5
-5
8.3
11
3.7
-20
19.3
-4
7.9
12
3.6
-19
18.2
-3
7.5
13
3.4
-18
17.1
-2
7.1
14
3.2
-17
16.2
-1
6.7
15
3.1
-16
15.3
0
6.4
20
2.5
-15
14.4
1
6.1
25
2.0
-14
13.6
2
5.8
30
1.6
-13
12.9
3
5.5
35
1.3
-12
12.2
4
5.2
40
1.1
-11
11.5
5
5.0
-10
10.9
6
4.7