4-1-2. FUNCTION/IR Control Test of Function/Wi-Fi /BT Module
Function/Wi-Fi/BT
Connector
LED Status/ Function
Switch
< Function/Wi-Fi/BT Connector Pins with Main
Reference Chart>
12 345678910 11 12 12 14 15 16 17 18 19
20
13 579246810 11 13 15 17 19 12 14 16 18 20
Wi-Fi /BT Pins Function Pins
Function Pins
1 USB DM 11 KEY1
2 USB DP 12 KEY2
3 GND 13 I2C_SCL
4 UART_TX 14 I2C_SDA
5 BT_WAKLE_UP 15 DMIC_DATA
6 WIFI_SUSPEND 16 DMIC_CLK
7 5V 17 LED
8 WIFI_WAKE_UP 18 GND
9 RESET 19 IR_LED1
10 IR_RX 20 IR_LED2
<WCT733M Pin Assignments>
1. Place TV in Power Standby
2. Check LED Status
3. If LED is OFF
9 Check LED (pin
17
) and VCC for 5Vdc (pin
7
)
→ If missing suspect Function Assy/Cable/Main board.
4. If LED is ON
9 Check Switch Operation activates on screen display
[On Screen Selections with Function Control]
• If missing:
9 Check
KEY_INPUT1
(pin
11
) change to 0V with a command.
• If wrong voltage or no change:
9 Check Switch for stuck or miss-operation.
5. Check
IR
(pin
10
) operation with Standard Remote command changes. (5V to 3.3V effective DC)
6. Check
SDA
(pin
14
),
SCL
(pin
13
) for effective 5Vdc (after power on)
→ If missing suspect Function Assy/Cable Assy/Main Assy.
4-2
4. Troubleshooting
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