LG 55LE7500 Service Manual page 8

2) MAC Address Download
- Com 1,2,3,4 and 115200(Baud rate)
- Port connection button click(1)
- Load button click(2) for MAC Address write.
- Start MAC Address write button(3)
- Check the OK Or NG
3.3. LAN
(1) Equipment & Condition
Each other connection to LAN Port of IP Hub and Jig
A
(2) LAN inspection solution
LAN Port connection with PCB
A
Network setting at MENU Mode of TV
A
setting automatic IP
A
Setting state confirmation
A
-> If automatic setting is finished, you confirm IP and
MAC Address.
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Only for training and service purposes
3.4. LAN PORT INSPECTION(PING TEST)
Connect SET -> LAN port == PC -> LAN Port
SET
(1) Equipment setting
1) Play the LAN Port Test PROGRAM.
2) Input IP set up for an inspection to Test
Program.
*IP Number : 12.12.2.2
(2) LAN PORT inspection (PING TEST)
1) Play the LAN Port Test Program.
2) Connect each other LAN Port Jack.
3) Play Test (F9) button and confirm OK Message.
4) Remove LAN CABLE
3.5. V-COM Adjust(Only LGD(M+S) Module)
- Why need Vcom adjustment?
The Vcom (Common Voltage) is a Reference Voltage of
A
Liquid Crystal Driving.
-> Liquid Crystal need for Polarity Change with every frame.
Data (R ,G,B ) &
Cont rol si gnal
S
Da t a I n p u t Da t a I n p u t
Y
S
T
E
Po w e r I n p u t Power Input Po w e r
Blo ck
M
V
COM
- 8 -
PC
Ga mma
Re f e r e nce V o ltage
Data (R ,G,B ) & C ont ro l s ignal
Ti m i n g
Co nt r o ll e r
Cont rol si gnal
So urce D r i v e I C
Column Line
V
COM
C
C
LC ST
V
COM TFT
Row Li ne
LGE Internal Use Only
Circuit Block
Gamm a Reference
Volta ge
Pane l
Liquid
Crys tal