DOWNLOAD LG 26LE6500 (CHASSIS:LL01A) Service Manual ↓ Size: 3.99 MB | Pages: 52 in PDF or view online for FREE

4.1.1. Connecting picture of the measuring instrument

(On Automatic control)
Inside PATTERN is used when W/B is controlled. Connect to
auto controller or push Adjustment R/C POWER ON -> Enter
the mode of White-Balance, the pattern will come out

4.1.2. Auto-control interface and directions

1) Adjust in the place where the influx of light like floodlight

around is blocked. (illumination is less than 10ux).

2) Adhere closely the Color Analyzer (CA210) to the module

less than 10cm distance, keep it with the surface of the
Module and Color Analyzer’s Prove vertically.(80~100°).

3) Aging time

- After aging start, keep the power on (no suspension of

power supply) and heat-run over 15minutes.

- Using ‘no signal’ or ‘full white pattern’ or the others, check

the back light on.

4.1.3. Auto adjustment Map (RS-232C)

**Caution **

Color Temperature : COOL, Medium, Warm.
One of R Gain/G Gain/ B Gain should be kept on 0xC0, and
adjust other two lower than C0.
(when R/G/B Gain are all C0, it is the FULL Dynamic Range of
Module)

• After enter Service Mode by pushing “ADJ” key,
• Enter White Balance by pushing “

G

” key at “6. White

Balance”

* After done all adjustments, Press “In-start” button and compare

Tool option and Area option

value with its BOM, if it is correctly same then unplug the AC
cable.
If it is not same, then correct it same with BOM and unplug AC
cable.
For correct it to the model’s module from factory JIG model.

* Push  The  “IN STOP KEY” after completing the function

inspection.

- 13 -

RS-232C COMMAND MIN

CENTER

MAX

[CMD ID DATA]

(DEFAULT)

Cool

Mid

Warm

Cool

Mid

Warm

R Gain

jg 

Ja 

jd 

00

172 

192 

192

255

G Gain 

jh 

Jb

je 

00

172 

192 

192

255

B Gain 

ji 

Jc 

jf

00

192 

192 

172 

255

R Cut 

64 

64 

64 

128

G Cut 

64 

64 

64 

128

B Cut 

64 

64 

64 

128

White Balance

Color Temp.

R-Gain

G-Gain

B-Gain

R-Cut

G-Cut

B-Cut

Test-Pattern.

Reset

Cool

172

172

192

64

64

64

ON

To set

 

Full White Pattern

COLOR
ANALYZER
TYPE: CA-210

RS-232C Communication

CA-210

· Connect D-sub Signal Cable to D-Sub Jack.
· Write EDID DATA to EEPROM (24C02) by using DDC2B

protocol.

· Check whether written EDID data is correct or not.
* For SVC main Ass’y, EDID have to be downloaded to Insert

Process in advance.

· Connect HDMI Signal Cable to HDMI Jack.
· Write EDID DATA to EEPROM(24C02) by using DDC2B

protocol.

· Check whether written EDID data is correct or not.
* For SVC main Ass’y, EDID have to be downloaded to Insert

Process in advance.

1) All Data : HEXA Value
2) Changeable Data :

*: Serial No : Controlled / Data:01
**: Month : Controlled / Data:00
***:Year : Controlled
****:Check sum

* Caution

1) Use the proper signal cable for EDID Download

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

* Caution: - Never connect HDMI & D-sub cble at the same time.

- Use the proper cables below for EDID Writing.
- Download HDMI 1, HDMI 2 separately because

HDMI 1 is different from HDMI 2.

- 14 -

HDMI1

HDMI2

HDMI3

RGB

HDMI1

HDMI2

HDMI3

RGB

D-sub to D-sub

DVI-D to HDMI or HDMI to HDMI

For HDMI EDID

For Analog EDID

Item

Manufacturer ID

Version

Revision

Condition

GSM

Digital : 1

Digital : 3

Data(Hex)

1E6D

01

03

(1) FHD RGB EDID Data (CS : 1D)

(2) FHD HDMI EDID Data (CS : D739)

(3) FHD HDM2 EDID Data (CS : D739)

(4) HD RGB EDID Data (CS : 93)

(5) HD HDMI1 EDID Data (CS : 7AD5)

(6) HD HDMI2 EDID Data (CS : 7AD5)

(7) HD HDMI3 EDID Data (CS : 7AB5)

(8) ASCII Code

- 15 -

- 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)

· V-COM default value is different from module.

1) 32LD460 : 417
2) 37LD460 : 432
3) 42LD460 : 433
4) 47LD460 : 447
5) 37LE5300 : 378
5) 42LE5300 : 450
5) 47LE5300 : 460
5) 55LE5300 : 444

- 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.

- 16 -

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