PCB Diagram and Parts List
Samsung Electronics 431
①
CN100 POWER TO MAINCONNECTOR
②
CN801 SPI
③
CN310 2WIRE SUB
④
CN501, 502
#1, 2 : 12V
#3, 4 : SGND
#5 : 5V
#6 : FUSE SHORT/OPEN CHK
#7 : 15V OUTPUT ON/OFF
#8 : ZEROCROSSING SIGNAL
#9 : ZC STANDBY MODE ON/OFF
#10 : MAIN FAN MOTOR PWM
#11 : MAIN FAN MOTOR F/B
#12 : F3 WIRED REMOTE CONTROL COMMUNICATION
#13 : F4 WIRED REMOTE CONTROL COMMUNICATION
#14 : F1 INDOOR/OUTDOOR COMMUNICATION
#15 : F2 INDOOR/OUTDOOR COMMUNICATION
#1 : SGND
#3 : 12V
#2,4 : NC
#1 : 12V
#2 : COM2_PCTRL_MICOM
#3 : COM2_VCHECK_A
#4 : COM2_VCHECK_B
#5 : COM2_MICOM_AD
#6 : VCC STANDBY MODE ON/OFF
#7 : COM2_ENABLE
#8 : COM2_C
#9 : COM2_D
#10 : COM2_TX
#11 : COM2_RX
#12 : SGND
CN501
#1, 2 : BUZZER
#3 : CENTER 3 COLOR LED BLUE
#4 : CENTER 3 COLOR LED GREEN
#5 : CENTER 3 COLOR LED RED
#6 : CENTER LED ICE BLUE
#7~10 : CENTER LED
CN502
#1 : 12V
#2~6 : VISUALIZATION LED
#7~11 : REMOTE CONTROL RECEIVER
PBA CONNECTION
⑤
CN201 EEPROM
⑥
CN81, 83 AIMB14
⑦
CN950 SUCTION FAN
⑧
CN412 INDOOR
TEMPERATURE SENSOR
#1 : SGND
#2 : NC
#3 : 5V
#4 : EEPROM_SELECT
#5 : EEPROM_SO
#6 : EEPROM_SI
#7 : EEPROM_CLK
CN81
#1, 3 : 12V
#2 : ERROR CHK 12V JUNCTION
#4 : COMP CHK 12V JUNCTION
CN83
#1 : EXT_CTRL 5V
#2 : SGND
#1, 5, 9 : SUCTION VCC 12V
#2, 6, 10 : SUCTION FAN F/B
#3, 7, 11 : SGND
#4, 8, 12 : SUCTION PWM
#1 : ROOM TEMP
#2 : SGND
⑨
CN230 DOWNLOAD
⑩
CN413 EVA TEMPERATURE
SENSOR
⑪
CN411 FLOAT SW
⑫
CN802 DRAIN PUMP
#1~20 : DOWNLOAD #1 : EVA IN TEMP
#3 : EVA OUT TEMP
#5 : DISCHARGE TEMP
#2, 4, 6 : SGND
#1 : FLOAT SW
#2 : SGND
#1 : DRAIN PUMP 12V
#2 : SGND
⑬
CN804 VENTILATOR
#1 : VENT MICOM OUTPUT
#2 : BUFFER OUTPUTHIGH/LOW
360 cassette
- MAIN PCB