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4. Troubleshooting
FUNCTION/IR Control
„
1.
TV in Standby
√
LED Status
2.
If
LED is OFF
√
LED 1.7Vdc (pin 8)and VCC for 3.3Vdc (pin 3)
•
If missing suspect Function Assy/Cable/Main board.
3.
If
LED is ON
√
Switch Operation activates on screen display.
<On Screen Selections with Function Control>
If missing:
Key _Input1 Pin 6
-
If wrong voltage or no change: Switch for stuck or miss-operation.
-
Function/IR
4.
Check
IR operation with Standard Remote command changes. (3.3V to 2.5V effective DC)
5.
SDA
, SCL for effective 3.3Vdc (after power on)
6.
If missing suspect Function Assy/Cable Assy./Main Assy.
4-2
change to 0V with a command.
CN1
LED Status/
Function Switch
CN1 (FUNCTION/IR)
IR 3.3Vdc to 2.5Vdc
1
(Effective DC)
3
A3.3V_PW
AMP_SDA_I2C 3.3 Vdc
5
(effective DC)
KEY_INPUT2 1.8Vdc to
7
command Voltage
2
GND
AMP_SCL_I2C 3.3Vdc
4
(effective DC)
KEY_INPUT1 1.8dc to 0V
6
with PWR On command
LED_STB_OUT 1.7Vdc
8
STBY
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