DOWNLOAD LG 42LD460B / 42LD460H (CHASSIS:LJ01B) Service Manual ↓ Size: 6.95 MB | Pages: 45 in PDF or view online for FREE

1) Press Adj. key on the Adj. Remote control.
2) Select EDID D/L menu.
3) By pressing Enter key, EDID download will begin
4) If Download is successful, OK is display, but If Download if

failure, NG is displayed.

5) If Download is failure, Re-try downloads.

* Edid data and Model option download (RS232)

* Caution

1) Use the proper signal cable for EDID Download

- Analog EDID : Pin3 exists
- Digital EDID : Pin3 exists

2) Never connect HDMI & D-sub Cable at the same time.
3) Use the proper cables below for EDID Writing
4) Download HDMI1, HDMI2, separately because HDMI1 is

different from HDMI2

1) FHD RGB EDID data(Check sum:1D)

2) FHD HDMI EDID data

HDMI 1 (Check sum:04, 5A)

HDMI 2 (Check sum:04, 4A)

HDMI 3 (Check sum:04, 3A)

- 13 -

Item

Manufacturer ID

Version

Revision

Condition

GSM

Digital : 1

Digital : 3

Data(Hex)

1E6D

01

03

D-sub to D-sub

DVI-D to HDMI or HDMI to HDMI

For HDMI EDID

For Analog EDID

NO

Item

CMD1 CMD2

Data0

Enter

Download

A

A

0

0

When transfer the ‘Mode In’,

download Mode

‘Mode In’

Carry the command.

EDID data

Download

A

E

00 10

Automatically Download

and Model

(The use of a internal pattern)

option download

HDMI 4 (Check sum:04, 2A)

3) HD RGB EDID data(Check sum:70)

4) HD HDMI EDID data

HDMI 1 (Check sum:1C, BA)

HDMI 2 (Check sum:1C, AA)

- 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.

- Adjust sequence

· Press the PIP key of th ADJ remote control.(This PIP key is

hot key to enter the VCOM adjusting mode)

(Or After enter Service Mode by pushing “ADJ” key, then
Enter V-Com Adjust mode by pushing “

G

” key at “10. V-

Com”

· As pushing the right or the left key on the remote control,

and find the V-COM value which is no or minimized the
Flicker. (If there is no flicker at default value, Press the exit
key and finish the VCOM adjustment.)

· Push  the  “OK” key to store value. Then the message

“Saving OK” is pop.

· Press the exit key to finish VCOM adjustment.
(Visual Adjust and control the Voltage level)

- When pressing IN-STOP key by SVC remocon, Red LED

are blinked alternatively. And then Automatically turn off.

(Must not AC power OFF during blinking)

Confirm whether is normal or not when between power
board’s ac block and GND is impacted on 1.5 kV(dc) or 2.2
kV(dc) for one second.

- 14 -

HD(CCFL) FHD(CCFL)

HD(LED)

FHD Small(LED) FHD(LED)

32LD350-SB

32LD460-SA 22LE5300-SA 22LE6500-SA 32LE4600-SA
37LD460-SA 26LE5300-SA 26LE6500-SA 42LE4600-SA
42LD460-SA

47LE4600-SA

47LD460-SA

55LE4600-SA

32LD420-SA

32LE5300-SA

42LD420-SA

37LE5300-SA

32LD460H-SA

42LE5300-SA

42LD460H-SA

47LE5300-SA
55LE5300-SA

Row  Li ne

Column  Line

C

LC

C

ST

S

Y

S

T

E

M

Gat

e

 Driv

e

 IC

So urce D r i v e  I C

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

- 15 -

- 16 -

300

200

530

810

400

510

120

500

A4

A2

A10

900

910

800

LV

1

540

521

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by       in the Schematic Diagram and EXPLODED VIEW. 
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards. 
Do not modify the original design without permission of manufacturer.