Samsung AVXCSH023/032/040CE Service Manual page 313

PCB Diagram
6-2-2 RD040/050MHXCA
■ MAIN PCB
CN15(4PIN/White) – Main Power
1
#5 : Power L
#7 : Power N
K1, K2, K3, K4-Button
5
K1, K2 : Special Control
K3 : Restart
K4 : Operation data display
CN81- Main Inverter board
9
communication
#1 : Signal Input
#2 : Signal Output
#3 : GND
#4 : DC 5V
#5 : DC 12V
#6 : Inverter board DC control
#7 : Not used
CN81- Electric Expansion Valve
13
#1~4 : Phase Control Signal
#5~6 : 12V Voltage
6-33
CN74-Thermal Valve
2
#1 : Power N
#3 : Power L
CN12, CN13-DC Output
6
CN12 : DC 12V
CN13 : DC 5V
CN37- Programmer
10
CN42- High Pressure Sensor
14
#1 : High Pressure Sensor
#2 : Not Used
#3 : GND
#4 : DC 5V
CN44-Sensor
3
#1,2 : OUT Sensor
#3,4 : COND Sensor
#5,6 : SUCTION Sensor
CN83- EVI Electric Expansion
7
Valve
#1~4 : Phase Control Signal
#5 : 12V Voltage
CN75- 4 Way Valve
11
CN32- Main, Communication
15
board connection
#1 : DC 12V
#2 : DC 5V
#3, 4 : Communication Signal
#5 : Enable Signal
#6 : Reverse Signal
#7, 8 : AC Protection
CN43- Sensor
4
#1,2 : DIS1 Sensor
#3,4 : TSC Sensor
#5,6 : OLP Sensor
#7,8 : Empty
CN85, CN86- External
8
Contact Signal
CN85 : External Test Signal
CN86 : External Contact Signal
CN74- Thermal Valve
12
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