Troubleshooting; Power Troubleshooting; Function/Ir Control Test - Samsung UN43TU7000F Service Manual

4. Troubleshooting

4-1. Power Troubleshooting

4-1-1. FUNCTION/IR Control Test

Function/Wi-Fi/BT
Connector
1 2 3 4 5 6 7 8 9 10 11 12 12 14 15 16 17 18 19 20
LED Status/ Function
Switch
1 3 5 7 9 2 4 6 8 10 11 13 15 17 19 12 14 16 18 20
< Main Board Connector Reference Chart>
1. Place TV in Power Standby
2. Check LED Status
3. If LED is OFF
Check LED 1.7Vdc (pin 14 ) and VCC for 5Vdc (pin 4 )
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 17 ),
→
If missing suspect Function Assy/Cable Assy/Main Assy.
Pin 19
Pin 1
Pin 2
Pin 20
(pin 11 ) change to 0V with a command.
SCL (pin 15 ) for effective 5Vdc (after power on)
CN11_CM (Main Board Pins)
1 WIFI_DM
3 WIFI_DP
WIFI_GND
5
IR_GND
7 UART_TX
9 BT_WAKE
11 KEY_INPUT1
13 KEY_INPUT2
15 ECO_SCL_I2C
17 ECO_SDA_I2C
19 N.C
<Main Board Connector Function Pins>
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
Reference Chart>
1 3 5 7 9 2 4 6 8 10 11 13 15 17 19 12 14 16 18 20
4. Troubleshooting
2 WIFI_PHY_ON
WIFI5V_PW
4
IR5V_PW
6 WIFI_WOL
8 WIFI_NRESET
10 IR
12 N.C
14 LED_STB_OUT
WIFI_GND
16
IR_GND
18 IR_OUT_1
20 IR_OUT_2
Function Pins
4-1