FUNCTION/IR Control
TV in Standby
1.
LED Status
√
If
2. LED
is
OFF
LED 1.7Vdc (pin 8)and VCC for 3.3Vdc
√
If missing suspect Function Assy/Cable/Main board.
•
If
3. LED
is
ON
Switch Operation activates on screen display.
√
<On Screen Selections with Function Control>
If missing:
Check the STBY voltage from SMPS to Main Board. If STBY is OK suspect
1.
Main Board
.
Check Jog Shuttle 5 SW Operation (
2.
Key 1
&
Key 2
) for command changes. If incorrect suspect a
stuck Jog switch
which also holds data to Main preventing operation.
Check
3.
SDA
,
SCL
for effective 3.3Vdc (after power on)
Check
4.
IR
with Standard Remote command changes. (3.3V to 2.5V effective DC)
<Function/IR>
<Jog Function Switch>
CN1101 (FUNCTION/IR)
1
IR 3.3Vdc to 2.5Vdc (Effective DC)
2
GND
3
A3.3V_PW
4
AMP_SCL_I2C 3.3Vdc (effective
DC)
5
AMP_SDA_I2C 3.3 Vdc (effective
DC)
6
KEY_INPUT1 1.8dc to 0V with
PWR On command
7
KEY_INPUT2 1.8Vdc to command
Voltage
8
LED_STB_OUT 1.7Vdc STBY
9
N/C
10
N/C
11
N/C
12
N/C
P
CMD
Signal
DC Voltage
1
Center
Key 1
1.8V
to 0 Vdc
2
Vol+
Key 2
1.8V
to 1.0 Vdc
2
Vol-
Key 2
1.8V
to 1.5 Vdc
2
CH+
Key 2
1.8V
to 0 Vdc
2
CH-
Key 2
1.8V
to 0.6 Vdc
3
GND
4-2
4. Troubleshooting
