LG 42LE8500, Service Manual

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- 8 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
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
A
Each other connection to LAN Port of IP Hub and Jig
(2) LAN inspection solution
A
LAN Port connection with PCB
A Network setting at MENU Mode of TV
A
setting automatic IP
A
Setting state confirmation
-> If automatic setting is finished, you confirm IP and
MAC Address.
3.4. LAN PORT INSPECTION(PING TEST)
Connect SET -> LAN port == PC -> LAN Port
(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?
A The Vcom (Common Voltage) is a Reference Voltage of
Liquid Crystal Driving.
-> Liquid Crystal need for Polarity Change with every frame.
Row Li ne
Column Line
C
LC
C
ST
Pane l
S
Y
S
T
E
M
Gat
e
Driv
e
IC
So urce D r i v e I C
Circuit Block
Ti m i n g
Co nt r o ll e r
Po w e r
Blo ck
V
COM
Ga mma
Re f e r e nce V o ltage
Gamm a R eference
Volta ge
Da ta (R ,G,B ) & C ont ro l s ignal
Con t rol si gnal
Data (R ,G,B ) &
Con t rol si gnal
In
te
r
fa
c
e
TFT
Po w e r I n p u t Power Input
Da t a I n p u t Da t a I n p u t
V
COM
Liquid
Crys tal
V
COM
SET PC