Samsung UN55LS003AF - Function Control Operation; FUNCTION;IR Control Test

4-2. Function Control Operation
4-2-1. FUNCTION/IR Control Test
<Function/IR>
LED Status / Function Switch
To CN801 Main Board
CN901 (FUNCTION & IR)
1
IR
3.3Vdc to 2.5Vdc (Eective DC)
2 DGND
3 A3.3V_PW 4
KANTN_MAIN_SCL_I2C
3.3Vdc (Eective DC)
5
KANTN_MAIN_SDA_I2C
3.3Vdc (Eective DC)
6
KEY_INPUT1
1.8Vdc to 0V with command
7
KEY_INPUT2
(No operation change)
8
LED_STB_OUT
1.7Vdc STBY
9
A3.3V_PW
3.3V to Deco Lamp
10
LED_CTRL
Deco Lamp 1Vdc (O) / 05V (On)
[On Screen Selections with Function Control]
TV in Standby1.
Check LED Status. 2.
NOTE
Can be turned o in menu.•
If 3. LED is OFF (& LED should be on with menu setting)
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
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. -
4-5
4. Troubleshooting