- 31 -
PWB(PCB) ASSEMBLY, DISPLAY
CON101
2
BN
RD
1
PK
3
YL
4
BL
5
RT-SENSOR
6
1 2 3
4 5 6
SB
WH
11 10 9
8 7 6
5 4 3
2 1
6
7
8
4
3
2
1
1
2
3
4
5
1
2
3
4
5
6
7
10
9
8
BN
GY
WH
GY
CON5
CON6 CON8
CON7
CON4
RD
BN
PR
GY
WH
BO
BO
WH
WH
PR
PK YL BL
PR
A
B
DEF-SENSOR
R-SENSOR
C-FAN
F-FAN
PWB(PCB) ASSEMBLY, MAIN
FIGURE 2
2. Door Monitor Circuit (LV)
Refrigerator
Measurement between
pins 4 and 3 Con 8
Door Close
0 volts
PIN
1
2
3
4
Door Open
5 volts
RT-SNR
R-DOOR S/W
CONNECTOR 8
8-2-3 Temperature Sensor Circuit (Refer to figure 2)
Voltage supplied to each sensor wil range between 0.5 volts -22°F(-30°C) and 4.5 volts 122°F(50°C) depending upon the
temperature in the compartments. A measurement of 0 volts indicates a short in the sensor circuit. A measurement of 5
volts indicates an open in the sensor circuit.
PIN
1
2
3
4
5
6
7
8
PIN
1
2
3
4
N/C
N/C
N/C
N/C
CONNECTOR 8
RT-SNR
R-DOOR S/W
D-SNR
R-SNR
CONNECTOR 7
To measure the outputs of the sensors, check the voltages between the pins as in the table. And refer the values in the
section
“RESISTANCE SPECIFICATION OF SENSOR”
SENSOR
Pin Number Pin Number
D-SNR
Con 7 Pin 3
Con 7 Pin 4
R-SNR
Con 7 Pin 5
Con 7 Pin 6
RT-SNR
Con 8 Pin 1
Con 8 Pin 2
To measure the outputs of the fans on the control boards check the voltages between the pins for the following components:
MOTOR ON MOTOR OFF
Freezer Fan
Con 4 pin 5
Con 4 pin 6
10 - 14 VCD 2 VCD or less
Cooling Fan
Con 4 pin 2
Con 4 pin 3
10 - 14 VCD 2 VCD or less
FAN
PIN NUMBER PIN NUMBER
OUTPUT VOLTAGE
PIN
1
2
3
4
5
6
7
8
9
10
N/C
G
V
F
G
V
N/C
N/C
N/C
N/C
C-FAN
F-FAN
N/C
CONNECTOR 4
