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 Standby
1.
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 effective DC)
SDA
6.
,
SCL
for effective 3.3Vdc (after power on)
If missing suspect Function Assy/Cable Assy./Main Assy.
-
4-1
4. Troubleshooting
