50PC35-ZC (CHASSIS:PD73A) - LG TV Service Manual (repair manual). Page 10

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1) Before adjusting White-balance , the AV ADC should be

done.

2) If ADC status were “NG”, Need to ADC adjustment. 

1) Remote controller for adjustment.
2) Color Analyzer.( CA-1000,CA-100,100+,CA-210 or same

product ) : CH10(PDP)

3) Auto W/B adjustment instrument.(only for Auto adjustment)
4) AV Pattern Generator. 

W 

Color temperature standards according to CSM and Module.

W 

CS-1000/CA-100+/CA-210(CH10)  White balance adjustment

coordinate and color temperature.

V  

Inside PATTERN is used when W/B is controlled. Connect

to auto controller or push control R/C IN-START -> Enter
the mode of White-Balance, the pattern will come out.

V 

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. Measure and adjust after sticking the Color Analyzer(CA-

100+, CA210) to the side of the module.

3. Aging time 

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

poewr supply) and heat-run over 15minutes.

2) Keep white pattern using inside pattern.

V 

Auto adjustment Map(RS-232C)

- Baud : 115200bps, RS232 Host : PC, Echo : none

(Manual white Balance)

V  

One of R Gain/ G Gain/ B Gain should be kept on 80, and

others are controlled lowering from 80

(1) ‘power on’ of the control R/C, set heat run to white by

pressing and heat run over 15 minutes. (Set: RS-232 Host:
PC, Baud Rate: 115200bps, Download: Cortez) 

(2) Zero Calibrate CA-100+, and stick the sensor to the center

of PDP module surface when you adjust.

(3) Double click In-start key on Controlling R/C and get in

‘white balance’.

(4) Set test-pattern on and display inside pattern. Control is

carried out on three color temperature, COOL, MEDIUM,
WARM. (Control is carried out three times.)

(5) When the R/G/B GAIN is 80 on OSD, it is the FULL

DYNAMIC Range of the Module. In order to control white
balance without the saturation of FULL DYNAMIC Range
and DATA, one of R Gain / G Gain / B Gain should be kept
on 80, and other two is controlled lowering from 80.

* Color Temperature: Cool, Medium, Warm

(1) When R GAIN is set to 80

- Control G GAIN and B GAIN by lowering from 80. 

(2) When B GAIN is set to 80

- Control R GAIN and G GAIN by lowering from 80.

(3) When G GAIN is set to 80
- Control R GAIN and B GAIN by lowering from 80.

One of R Gain / G Gain / B Gain should be kept on 80, and
adjust other two lower than 80.
(When R/G/B GAIN are all 80, it is the FULL DYNAMIC
Range of Module)

(Fig. 6) Auto AV(CVBS) Color Balance Test Pattern

Full White Pattern

RS-232C Communication

CA-210

Color

ANALYZER

TYPE : CA-210

Color Coordinate

x

y 

0.283±0.002

0.293±0.002

0.329±0.002

11000K

9300K

6500K

0.000

0.000

0.003

0.276±0.002

0.285±0.002

0.313±0.002

COOL

MEDIUM

WARM

Mode

Temp

uv

PLASMA

Remark

11000K

9300K

6500K

Cool

Normal

Warm

CSM

ADC adjust

Data Read

Default Write

Enter

Adjust Mode

ADC adjust

ADC Parameter

Digital Data

ADC Parameter

(Average)

Adjustment

Confirmation

Adjust ‘Mode In’

Adjust ‘Mode Off’

NO

Item

Remark

CMD1 CMD2 Data 0

A

A

A

A

A

A

A

D

D

D

D

D

D

D

0

0

0

0

9

0

0

1

2

3

4

9

0

9

Transfer 18Byte

(Input resolution Data)

To check ADC Adjusment

on Assembly line

When transger the ‘Mode

In’, Carry the command.

- Caution : Using ‘power on’ button’ of the control R/C, power in TV.

Type

Baud Rate

115200

Index

R Gain

G Gain

B Gain

R Offset

G Offset

B Offset

Data bit

8

Cmd1 Cmd2

j

a

j

b

j

c

j

d

j

e

j

f

Stop bit

1

Parity

NONE

PD73A

Protocol

Setting

Data

Min Value

00(00)

00(00)

00(00)

00(00)

00(00)

00(00)

Max Value

128(80)

128(80)

128(80)

128(80)

128(80)

128(80)