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4. Troubleshooting
4-1. Function Control Operation Test
LED Status / Function Switch
<FUNCTION/IR>
1. Place TV in Power Standby
2. Check
LED Status
3. If LED is OFF
LED 1.7Vdc (pin 8 ) and VCC for 3.3Vdc (pin 3 )
9
• If missing suspect Function Assy/Cable/Main board.
4. If LED is ON
Switch Operation activates on screen display
9
[On Screen Selections with Function Control]
• If missing:
9 Key_Input 1 (pin 6 ) change to 0V with a command.
• If wrong voltage or no change:
9 Switch for stuck or miss-operation.
5. Check
IR
operation with Standard Remote command changes.
6. Check SDA,
SCL
for effective 3.3Vdc. (after power on)
- If missing suspect Function Assy/Cable Assy./Main Assy
<To CN1601 Main Board>
1
3
5
7
9
11
CN1601 (FUNCTION & IR)
IR
2
A3.3V_PW
4
SENSOR_SDA_I2C
6
-
8
IR_OUT_1
10
GND
12
4. Troubleshooting
GND
SENSOR_SCL_I2C
KEY_INPUT1
LED_STB_OUT
IR_OUT_2
-
4-1
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