Function/Ir Control Test Of Function/Wi-Fi /Bt Module - Samsung UN43TU7000F Service Manual

4. Troubleshooting

4-1-2. FUNCTION/IR Control Test of Function/Wi-Fi /BT Module

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