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6. PCB DIAGRAM
6-1. MAIN PCB
11
12
13
1
10
2
9
5
6
3 4 7 8
Location Part No. Function Description Location Part No. Function Description
1 CN2 PBA Power Supply Supplies 120V of AC power Supplies power to the Sub PBA and provides a communications
8 CN8 SUB PBA Connection Port
function.
2 CN1 Reactor Connection Port Blocks noise generated when the motor operates.
9 IPM1 Washing Motor Drive IC Switches and supplies the voltages for the motor.
3 RY1 Main Relay Supplies PBA power when the Power button is pressed.
Water Level And Temperature Detects the laundry, water supply, and water draining operations and
10 CN7
4 RY3 Washing Heater Relay The switch for the Washing Heater power supply drive. Sensor Connector detects whether each heater is working properly.
Steam Heater Relay Door And Silver Nano
5 RY4 The switch for the Steam Heater power supply drive. 11 CN4 Detects the door operations and supplies power for the Silver Nano.
(Only WF448***) Connector
6 CN5 Motor Power Supply Port Supplies the 3-phase drive voltage for the Washing Motor. 12 CN3 Each Load Connection Port The port to supply power for each electric device.
7 CN6 Hole Sensor Connection Port Detects whether the Washing Motor is working normally. 13 IC18 Ag IC Drives the Ag IC.
90 _ PCB Diagram
6-2. CONNECTOR AND RELAY PORT PART DETAILED MANUAL (MAIN PCB)
CN3
1. Door Lock Close CN4
2. Door Lock Open 6. Circulation Pump 1. Door Switch 5. Empty Pin
3. Drain Pump 7. Pre Valve 2. Empty Pin 6. Empty Pin
4. Steam Valve 8. Main Valve 3. Door Switch 7. AG Sensor
5. Bleach Valve 9. Hot Valve 4. Empty Pin 8. AG Sensor
CN2
1. AC Power Port
2. AC Power OFF Detection
CN7
Sensor
1. Empty Pin
3. Door Detection Sensor
(LOCK, UNLOCK) 2. Empty Pin
3. Empty Pin
4. Washing Water Temperature
Sensor
5. Ground
6. Washing Water Level Sensor
7. Washing Water Level Sensor
CN1
1. Reactor Connection Port
2. Reactor Connection Port
CN8
1. Communications Port (Rx)
2. Communications Port (Tx)
RY4 (Only WF448***)
3. Rest Signal Output
1. Steam Heater Relay Switch
4. Ground
2. Steam Heater Relay Switch
5. 5V
6. 15V
RY1 RY4 CN5 CN10 CN6
1. Main Power Relay Switch 1. Washing Heater Relay Switch 1. Motor Power (U Phase) 1. AC OFF Check 1. 5V
2. Main Power Relay Switch 2. Washing Heater Relay Switch 2. Motor Power (V Phase) 2. Test Mode 2. Hole Sensor Signal
3. Motor Power (W Phase) 3. 5V 3. Hole Sensor Signal
4. Transmission Port 4. Ground
5. Ground
6. Input Port
PCB Diagram _ 91
6-3. SUB PCB
2
2
1
3
2
2
4
Location Part No. Function Description
1 LCD CN3 Main PBA Connection Port Receives power from the Main PBA and provides a communications function.
2 LCD CN1 and so on. LCD, Display Connection Port Connects the LCD Board and the Graphics Board.
3 Graphic CN1 Power Connection Port Connects power.
4 BZ1 Buzzer Circuit Generates sound when the Menu key is pressed, the Encoder operates and the menu is closed.
92 _ PCB Diagram
6-4. CONNECTOR PORT PART DETAILED MANUAL (SUB PCB)
CN4_GRAPHIC
1. Tub Light Drive Signal
2. Empty Pin
3. Ground
CN1_LCD CN1_GRAPHIC
1. Communications Port (Tx) 1. CO
2. Communications Port (Rx) 2. Empty Pin
3. Outputs the Reset Signal 3. NO
4. Ground 4. Empty Pin
5. 5V 5. NC
6. 15V
PCB Diagram _ 93