DOWNLOAD LG 32LD452B / 32LD452C (CHASSIS:LA01Z) Service Manual ↓ Size: 4.87 MB | Pages: 48 in PDF or view online for FREE

- 9 -

This spec. sheet applies to LA01Z Chassis applied LCD TV all
models manufactured in TV factory 

2.1   Because this is not a hot chassis, it is not necessary

to use an isolation transformer. However, the use of
isolation transformer will help protect test instrument.  

2.2   AdjThe adjustment must be performed in the

circumstance of 25 ±5 C of temperature and
65±10% of relative humidity if there is no specific
designation.  

2.4   The input voltage of the receiver must keep

100~240V, 50/60Hz.  

2.5   The receiver must be operated for about 5 minutes

prior to the adjustment when module is in the
circumstance of over 15 

Caution) When still image is displayed for a period of 20

minutes or longer (especially where W/B scale is
strong. Digital pattern 13ch and/or Cross hatch
pattern 09ch), there can some afterimage in the
black level area. 

•Adjust 480i Comp1(ADC) 
•EDID/DDC download 

Above adjustment items can be also performed in Final
Assembly if needed. Both Board-level and Final assembly
adjustment items can be check using In-Star Menu 1.ADJUST
CHECK. Component 1080p and RGB-PC Adjust will be
calculated by 480i adjust value. 

•White Balance adjustment 
•RS-232C functionality check 
•Factory Option setting per destination 
•Ship-out mode setting (In-Stop) 

•Ship-out mode 
•Service Option Default 
•USB Download(S/W Update, Option, Service only) 
•ISP Download (Optional) 

(1) Overview

ADC adjustment is needed to find the optimum black level
and gain in Analog-to-Digital device and to compensate
RGB deviation. 

(2) Equipment & Condition

1) Jig (RS-232C protocol)
2) MSPG-925 Series Pattern Generator(MSPG-925FA) 

- Resolution : 480i Comp1 (MSPG-925FA: model-209,

pattern-65) 

- Resolution : 1024*768 RGB (Inner Pattern) 
- Pattern : Horizontal 100% Color Bar Pattern 
- Pattern level : 0.7±0.1 Vp-p

(3) Adjustment

1) Adjustment method

- Using RS-232, adjust items listed in 3.1 in the other

shown in “4.1.3.3”

2) Adj. protocol

Ref.) ADC Adj. RS232C Protocol_Ver1.0

3) Adj. order

- aa 00 00  [Enter ADC adj. mode]
- xb 00 40  [Change input source to Component1(480i)]
- ad 00 10  [Adjust 480i Comp1]
- xb 00 60  [Change input source to RGB(1024*768)]
- ad 00 10  [Adjust 1024*768 RGB]
- ad 00 90  End adj.

Protocol

Command

Set ACK

Enter adj. mode

aa 00 00

a 00 OK00x

Source change

xb 00 40

b 00 OK40x (Adjust 480i Comp1 )

xb 00 60 

b 00 OK60x (Adjust 1024*768 RGB)

Begin adj.

ad 00 10

Return adj. result

OKx (Case of Success)

NGx (Case of Fail)

Read adj. data

(main)

(main)

ad 00 20 

000000000000000000000000007c007b006dx

(sub)

(Sub)

ad 00 21

000000070000000000000000007c00830077x

Confirm adj.

ad 00 99

NG 03 00x (Fail)

NG 03 01x (Fail)

NG 03 02x (Fail)

OK 03 03x (Success)

End adj.

aa 00 90

a 00 OK90x

- 10 -

(1) Overview

ADC adjustment is needed to find the optimum black level
and gain in Analog-to-Digital device and to compensate
RGB deviation. 

(2) Equipment & Condition

1) Adjust Remocon
2) 801GF(802B, 802F, 802R) or MSPG925FA Pattern

Generator

- Resolution: 480i Comp1(MSPG-925FA: Model-209,

Pattern-65)

- Resolution: 1024*768 RGB(Inner Pattern)
- Pattern : Horizontal 100% Color Bar Pattern
- Pattern level: 0.7±0.1 Vp-p
- Image

3) Must use standard cable

(3) Adjust method

•  ADC 480i/1080p Comp1, RGB 

1) Check connected condition of Comp1 cable to the

equipment 

2) Give a 480i Mode, Horizontal 100% Color Bar Pattern

to Comp1. 

(MSPG-925FA -> Model: 209, Pattern: 65) 

3) Change input mode as Component1 and picture mode

as “Standard” 

4) Press the In-start Key on the ADJ remote after at least

1 min of signal reception. Then, select 5.ADC 

Calibration. And Press OK Button on the menu “Start”.
The adjustment will start automatically. 

5) If ADC Comp 480i is successful, “ADC Component

Success” is displayed and Comp480i/1080p is
completed. 

If ADC calibration is failure, “ADC Component Fail” is
displayed. 

6) If ADC calibration is failure, after rechecking ADC

pattern or condition, retry calibration 

7) After completing  ADC Component, input mode will be

changed to RGB automatically. 

8) If ADC calibration is successful, “ADC RGB Success”

is displayed.  If ADC calibration is failure, “ADC RGB
Fail” is displayed. 

9) If ADC calibration is failure, after recheck ADC pattern

or condition, retry calibration 

(1) Overview

It is a VESA regulation. A PC or a MNT will display an
optimal resolution through information sharing without any
necessity of user input. It is a realization of “Plug and Play”. 

(2) Equipment

• Adjust remocon. 
• Since embedded EDID data is used, EDID download JIG,

HDMI cable and D-sub cable are not need. 

(3) Download method

1) Press Adj. key on the Adj. R/C, 
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 is failure, NG is displayed. 

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

•Caution) When EDID Download, must remove RGB/HDMI

Cable.

(4) EDID DATA 

1)LD450 Tool(FHD) 
• HDMI 1 EDID Table 

• HDMI 2 EDID Table 

- 11 -

• HDMI 3 EDID Table

• HDMI 4 EDID Table

• Analog RGB EDID Table 

(1) Overview

• W/B adj. Objective & How-it-works

- Objective: To reduce each Panel’s W/B deviation
- How-it-works: When R/G/B gain in the OSD is at 192, it

means the panel is at its Full Dynamic
Range. In order to prevent saturation of
Full Dynamic range and data, one of
R/G/B is fixed at 192, and the other two is
lowered to find the desired value.   

- Adj. condition : normal temperature

1) Surrounding Temperature: 25±5ºC
2) Warm-up time: About 5 Min
3) Surrounding Humidity: 20% ~ 80%

(2) Equipment

1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12)
2) Adj. Computer(During auto adj., RS-232C protocol is

needed)

3) Adjust Remocon
4) Video Signal Generator MSPG-925F 720p/216-Gray

(Model:217, Pattern:78)

-> Only when internal pattern is not available

• Color Analyzer Matrix should be calibrated using CS-1000

(3) Equipment connection MAP

(4) Adj. Command (Protocol)

1) RS-232C Command used during auto-adj.

Ex) wb 00 00   ->  Begin white balance auto-adj.

wb 00 10   ->  Gain adj.
ja 00 ff   ->  Adj. data
jb 00 c0
...

...

wb 00 1f   -> Gain adj. complete
*(wb 00 20(start), wb 00 2f(end)) -> Off-set adj.
wb 00 ff   -> End white balance auto adj.

Co lo r An alyzer

 

Co m p ut er

 

Pat t ern Gen erat o r

 

RS -232C 

RS -232C 

RS -232C 

Probe

Signal Source

* If TV internal pattern is used, not needed

Connection Diagram of Automatic Adjustment

RS-232C COMMAND

Meaning

[CMD

ID

DATA]

wb

00

00

Begin White Balance adj.

wb

00

ff

- 12 -

2) Adjustment Map
Applied Model : 37LD450C-UA, 42LD450C-UA,

47LD450C-UA 

(5) Adj. method

• Auto adj. method

1) Set TV in adj. mode using POWER ON key
2) Zero calibrate probe then place it on the center of the

Display

3) Connect Cable(RS-232C)
4) Select mode in adj. Program and begin adj.
5) When adj. is complete (OK Sing), check adj. status pre

mode (Warm, Medium, Cool)

6) Remove probe and RS-232C cable to complete adj.

* W/B Adj. must begin as start command “wb 00 00” , and

finish as end command “wb 00 ff”, and Adj. offset if
need 

• Manual adj. method

1) Set TV in Adj. mode using POWER ON
2) Zero Calibrate the probe of Color Analyzer, then place

it on the center of LCD module within 10cm of the
surface..

3) Press ADJ key -> EZ adjust using adj. R/C > 6. White-

Balance then press the cursor to the right (KEY

G

).

(When KEY(

G

) is pressed 216 Gray internal pattern

will be displayed)

4) One of R Gain / G Gain / B Gain should be fixed at

192, and the rest will be lowered to meet the desired
value.

5) Adj. is performed in COOL, MEDIUM, WARM 3 modes

of color temperature.

- If internal pattern is not available, use RF input. In EZ

Adj. menu 6.White Balance, you can select one of 2
Test-pattern: ON, OFF. Default is inner(ON). By
selecting OFF, you can adjust using RF signal in 216
Gray pattern.

* Adj. condition and cautionary items

1) Lighting condition in surrounding area

Surrounding lighting should be lower 10 lux. Try to
isolate adj. area into dark surrounding.

2) Probe location

- LCD: Color Analyzer (CA-210) probe should be

within 10cm and perpendicular of the module
surface (80°~ 100°)

3) Aging time

- After Aging Start, Keep the Power ON status during 5

Minutes.

- In case of LCD, Back-light on should be checked

using no signal or Full-white pattern.

(6) Reference (White Balance Adj. coordinate and color

temperature)

• Luminance: 216 Gray
• Standard color coordinate and temperature using CS-

1000 

• Standard color coordinate and temperature using CA-210

ITEM

Command

Data Range

Default

(Hex.)

(Decimal)

Cmd 1

Cmd 2

Min

Max

Cool

R-Gain

j

g

00

C0

G-Gain

j

h

00

C0

B-Gain

j

i

00

C0

R-Cut

G-Cut

B-Cut

Medium

R-Gain

j

a

00

C0

G-Gain

j

b

00

C0

B-Gain

j

c

00

C0

R-Cut

G-Cut

B-Cut

Warm

R-Gain

j

d

00

C0

G-Gain

j

e

00

C0

B-Gain

j

f

00

C0

R-Cut

G-Cut

Mode

Color Coordination

Temp

∆

UV

x

y

COOL

0.269

0.273

13000K

0.0000

MEDIUM

0.285

0.293

9300K

0.0000

WARM

0.313

0.329

6500K

0.0000

Mode

Color Coordination

Temp

∆

UV

x

y

COOL

0.269±0.002

0.273±0.002

13000K

0.0000

MEDIUM

0.285±0.002

0.293±0.002

9300K

0.0000

WARM

0.313+0.002

0.329±0.002

6500K

0.0000