Samsung UN NU710DF Series - Troubleshooting; Power Issues

4. Troubleshooting
4-1. Power
4-1-1. Function Control Operation Test
CN1601 (FUNCTION & IR)
1 IR 2 GND
3 A3.3V 4 SENSOR_SCL_I2C
5 SENSOR_SDA_I2C 6 KEY_INPUT1
7 KEY_INPUT2 8 LED_STB_OUT
9 - 10 -
11 GND 12 -
<FUNCTION & IR>
LED Status / Function Switch
CN1601
TV in Standby1.
Check 2. LED Status.
If 3. LED is OFF
LED 1.7Vdc (pin 8) and VCC for 3.3Vdc (pin 3) 9
If missing suspect Function Assy/Cable/Main board.•
If 4. LED is ON
Switch Operation activates on screen display. 9
[On Screen Selections with Function Control]
If missing:•
Key_Input 1 Pin 6 9 change to 0V with a command.
If wrong voltage or no change:•
Switch for stuck or miss-operation. 9
Check 5. IR operation with Standard Remote command changes.
(3.3Vto2.5VeectiveDC)
SDA6. , SCLforeective3.3Vdc(afterpoweron)
If missing suspect Function Assy/Cable Assy./Main Assy. -
4-1
4. Troubleshooting