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4. Troubleshooting
4-1. Function
4-1. Function Control Test
<FUNCTION>
1.
TV in 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:
Key_Input 1
9
•
If wrong voltage or no change:
Switch for stuck or miss-operation.
9
5.
Check
IR operation with Standard Remote command changes.
(3.3V to 2.5V effective DC)
6.
SDA
, SCL for effective 3.3Vdc (after power on)
-
If missing suspect Function Assy/Cable Assy./Main Assy.
CN1601_NQ8
LED Status / Function Switch
(pin 6 ) change to 0V with a command.
CN1601_NQ8 (FUNCTION & IR)
1
IR
2
3
A3.3V_PW
4
5
IRB_SDA_I2C
6
7
KEY_INPUT2
8
9
A3.3V_PW
10
11
N.C
12
4. Troubleshooting
GND
IRB_SCL_I2C
KEY_INPUT1
LED_STB_OUT
N.C
N.C
4-1
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