4. Troubleshooting
4-1. Power Troubleshooting
4-1-1. FUNCTION/IR Control Test
<Main Board Connector Function Pins>
CN11_CM (Main Board Pins)
1
WIFI_DM
2
WIFI_PHY_ON
3
WIFI_DP
4
WIFI5V_PW
IR5V_PW
5
WIFI_GND
IR_GND
6
WIFI_WOL
7
UART_TX
8
WIFI_NRESET
9
BT_WAKE
10
IR
11
KEY_INPUT1
12
N.C
13
KEY_INPUT2
14
LED_STB_OUT
15
ECO_SCL_I2C
16
WIFI_GND
IR_GND
17
ECO_SDA_I2C
18
IR_OUT_1
19
N.C
20
IR_OUT_2
Pin 19
Pin 1
Pin 20
Pin 2
Function/Wi-Fi/BT
Connector
LED Status/ Function
Switch
< Main Board Connector Reference Chart>
1 2 3 4 5 6 7 8 9 10 11 1212 14 15 16 17 18 19 20
1 3 5 7 9 2 4 6 8 10 11 1315 17 19 12 14 16 18 20
< Function/Wi-Fi/BT Connector Pins with Main
Reference Chart>
1 2 3 4 5 6 7 8 9 10 11 1212 14 15 16 17 18 19 20
1 3 5 7 9 2 4 6 8 10 11 1315 17 19 12 14 16 18 20
Wi-Fi /BT Pins
Function Pins
1.
Place TV in Power Standby
2.
Check
LED
Status
3.
If
LED
is
OFF
9
Check
LED
1.7Vdc (pin 14 ) and VCC for 5Vdc (pin 4 )
→
If missing suspect Function Assy/Cable/Main board.
4.
If
LED
is
ON
9
Check Switch Operation activates on screen display
[On Screen Selections with Function Control]
•
If missing:
9
Check
KEY_INPUT1
(pin 11 ) change to 0V with a command.
•
If wrong voltage or no change:
9
Check Switch for stuck or miss-operation.
5.
Check
IR
(pin 10 ) operation with Standard Remote command changes. (5V to 3.3V effective DC)
6.
Check
SDA
(pin 17 ),
SCL
(pin 15 ) for effective 5Vdc (after power on)
→
If missing suspect Function Assy/Cable Assy/Main Assy.
4-1
4. Troubleshooting