Kenmore 795.78402.804 Service Manual page 41

3. Open Door Detection Circuit Check
Measurement
Location
Freezer/
Refrigerator Door
Closed
Open
CONNECTOR 4
PIN 1 2 3 4
F-FAN ICING-FAN
V G F V
8-2-3 Temperature Sensor Circuit
TEMPERATURE
- 20 ºC (-4 °F)
- 15 °C (5°F)
- 10 °C (14 °F)
- 5 °C (23 °F)
0 °C (32 °F)
+ 5 °C (41 °F)
+ 10 °C (50 °F)
+ 15 °C (59 °F)
+ 20 °C (68 °F)
+ 25 °C (77 °F)
+ 30 °C (86 °F)
+ 40 °C (104 °F)
+ 50 °C (122 °F)
• The resistance of the SENSOR has a ±5% common difference.
• Measure the resistance of the SENSOR after leaving it for over 3 minutes in the measuring temperature.
This delay is necessary due to sensor response speed.
5 6 7 8 9 10 11
C-FAN
R-DOOR S/W
G F V G F
CONNECTOR 4
PIN 1 2 3 4
DISPLAY
12V GND RXD TXD
RESISTANCE OF FREEZER/Icing
SENSOR
22.3 K?
16.9 K ?
13.0 K?
10.1 K?
7.8 K?
6.2 K?
4.9 K?
3.9 K?
3.1 K?
2.5 K?
2.0 K?
1.4 K?
0.8 K?
Pin 10 & 11 of con4 Ref.Door
Pin 5 & 6 of con6 Fre.Door
5 V
0 V
PIN 1 2 3
Stepping Motor
"LOCATED ON DISPLAY PCB"
5 6
RT-
SENSOR
RESISTANCE OF REFRIGERATOR &
DEFROST SENSOR & ROOM SENSOR
- 40 -
CONNECTOR 6
4 5 6 7 8 9
F-Door S/W D-SNR R-SNR
CONNECTOR 6
PIN 1 2 3 4 5 6
Stepping Motor F-Door S/W D-SNR
77 K?
60 K?
47.3 K?
38.4 K?
30 K?
24.1 K?
19.5 K?
15.9 K?
13 K?
11 K?
8.9 K?
6.2 K?
4.3 K?
10 11 12
F-SNR
7 8 9 10 11 12
R-SNR F-SNR