DOWNLOAD LG 32LB9D (CHASSIS:LB73B) Service Manual ↓ Size: 6.6 MB | Pages: 50 in PDF or view online for FREE

- 9 -

These instructions are applied to all of the 32" LCD TV,
LB73B Chassis

(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 equipment.

(2) Adjustments must be done in the correct order.
(3) The adjustments must be performed in the circumstance of

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

(4) The input voltage of the receiver be must kept 220V~,

60Hz when adjusting.

(5) The receiver must be operational for about 15 minutes

prior to the adjustments.  

* Perform preliminary operation after receiving 100% White

Pattern (06CH).(or 8. White Pattern status of Ez-Adjust)

* How to enter White Pattern

1) Press the POWER ON key on the adjustment remote

control or press the ADJ key on the adjustment remote
control to enter Ez-Adjust.

2) Select the ‘10.Test Pattern’ using the CH + / - key and

then select White using the arrow keys to display the
100% FULL WHITE PATTERN.

- In this mode, It is possible to heat run the set without

separate signal generator.

When you keep the still screen on for more than

20 minutes (Especially internal digital pattern (13 CH),
Cross Hatch Pattern (09CH) with higher black/white
contrast), be careful not to create residual image on the
black level part.

This has been established by VESA and is the function
created to “Plug and Play” by making the computer
reconfigure user environment through communication with the
monitor automatically without having the user set commands
directly to the PC or the monitor so that the user can use it
immediately.

* When writing EDID, use DDC2B protocol.

1) PC, Jig for adjusting DDC. (PC serial to D-sub

Connection equipment)

2) S/W for writing DDC (EDID data write & read)
3) D-Sub cable
4) Jig for HDMI Cable connection

1) Configure as Fig. 1, and turn on the PC and JIG.
2) Run the DDC recording S/W (EDID Data Write & Read).

(Execute in DOS mode)

(1) EDID for HDMI-1 (DDC (Display Data Channel) Data)

(2) EDID for HDMI-2 (DDC (Display Data Channel) Data)

LCD TV SET

<Fig. 1>  Connection Diagram of CPLD Download

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B C

D

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00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01

10 00 11 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23
20 09 48 4C AF CE 00 31 40 45 40 61 40 81 80 A9 40
30 D1 C0 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 C4 8E 21 00 00 1A 02 3A 80 18 71 38 2D 40
50 58 2C 45 00 C4 8E 21 00 00 1E 00 00 00 FD 00 30
60 58 1F 64 11 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 00

0

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A

B C

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0 02 03 1E F1 4E 20 22 10 1F 01 02 03 04 05 12 93

10 14 07 16 23 15 07 50 66 03 0C 00 10 00 80 01 1D
20 00 72 51 D0 1E 20 6E 28 55 00 C4 8E 21 00 00 1E
30 01 1D 80 18 71 1C 16 20 58 2C 25 00 C4 8E 21 00
40 00 9E 8C 0A D0 90 20 40 31 20 0C 40 55 00 4C 6C
50 42 00 00 18 01 1D 00 BC 52 D0 1E 20 B8 28 55 40
60 C4 8E 21 00 00 1E 01 1D 80 D0 72 1C 16 20 10 2C
70 25 80 C4 8E 21 00 00 9E 00 00 00 00 00 00 00 58

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B C

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0 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01

10 00 11 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23
20 09 48 4C AF CE 00 31 40 45 40 61 40 81 80 A9 40
30 D1 C0 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 C4 8E 21 00 00 1A 02 3A 80 18 71 38 2D 40
50 58 2C 45 00 C4 8E 21 00 00 1E 00 00 00 FD 00 30
60 58 1F 64 11 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 00

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0 02 03 1E F1 4E 20 22 10 1F 01 02 03 04 05 12 93

10 14 07 16 23 15 07 50 66 03 0C 00 20 00 80 01 1D
20 00 72 51 D0 1E 20 6E 28 55 00 C4 8E 21 00 00 1E
30 01 1D 80 18 71 1C 16 20 58 2C 25 00 C4 8E 21 00
40 00 9E 8C 0A D0 90 20 40 31 20 0C 40 55 00 4C 6C
50 42 00 00 18 01 1D 00 BC 52 D0 1E 20 B8 28 55 40
60 C4 8E 21 00 00 1E 01 1D 80 D0 72 1C 16 20 10 2C
70 25 80 C4 8E 21 00 00 9E 00 00 00 00 00 00 00 48

(3) EDID for HDMI-3 (DDC (Display Data Channel) Data)

(4) EDID for RGB

The Component 480i/1080p RGB 1080p adjustment sets the
optimal black level and gain automatically from the analog =>
digital converter, and is the function to correct the RGB
deviation.

Adjustment remote controller, 801GF (802B, 802F, 802R),
MSPG925FA, MSPG-1025D Pattern Generator (480i/
1080P Horizontal 60Hz Color Bar Pattern output must be
possible and output level must be adjusted accurately to
0.7±0.1Vp-p.)

1) Input color bar pattern of 480i 60Hz mode that is supported

to Component 1 input and select ‘Component 1’.

2) After receiving signal for at least 1 second, press the

ADJ Key on the Service R/C to enter the ‘Ez - Adjust’
and select the ‘1. ADC 480i Comp1’. Press the Vol+
Key to adjust the component1.  

3) When the adjustment is completed normally, a message

saying “ADC Component1 Success” is displayed and
when the adjustment is not completed normally, a
message saying ‘ADC Component1 480i Fail’ is
displayed.

4) When the component is not connected, a message

saying ‘Component1 Not Connected’, when the input
format is not 480i, a message saying ‘Not Valid Format’
and when the input signal is not coming out, a message
saying ‘Check Signal Status’ is displayed for 1 second.

1) Input color bar pattern of 1080p 60Hz mode that is

supported to Component 2, RGB input and select
‘Component 2’.

2) After receiving signal for at least 1 second, press the

ADJ Key on the Service R/C to enter the ‘Ez-Adjust’ and
select the ‘2. Adjust 1080p Comp2/ RGB’. Press the
Vol+ key to adjust the component 2.

3) When the adjustment is completed normally, a message

saying ‘ADC Component2 Success’ is displayed. and
when the adjustment is not completed normally, a
message saying ‘ADC Component2 1080p Fail’ is
displayed.

4) When the adjustment is not normally completed, make

the adjustment again after checking the pattern or
adjustment condition. The error message is as 4-3/ (1)/
4).

5) After adjustment is complete, exit the adjustment mode

by pressing the ADJ KEY.1

- 10 -

(Fig. 2) Adjust Pattern :100% 8 Color Bar Pattern

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0 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01

10 00 11 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23
20 09 48 4C AF CE 00 31 40 45 40 61 40 81 80 A9 40
30 D1 C0 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 C4 8E 21 00 00 1A 02 3A 80 18 71 38 2D 40
50 58 2C 45 00 C4 8E 21 00 00 1E 00 00 00 FD 00 30
60 58 1F 64 11 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 00

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0 02 03 1E F1 4E 20 22 10 1F 01 02 03 04 05 12 93

10 14 07 16 23 15 07 50 66 03 0C 00 30 00 80 01 1D
20 00 72 51 D0 1E 20 6E 28 55 00 C4 8E 21 00 00 1E
30 01 1D 80 18 71 1C 16 20 58 2C 25 00 C4 8E 21 00
40 00 9E 8C 0A D0 90 20 40 31 20 0C 40 55 00 4C 6C
50 42 00 00 18 01 1D 00 BC 52 D0 1E 20 B8 28 55 40
60 C4 8E 21 00 00 1E 01 1D 80 D0 72 1C 16 20 10 2C
70 25 80 C4 8E 21 00 00 9E 00 00 00 00 00 00 00 38

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10 0E 11 01 03 18 73 41 96 0A CF 74 A3 57 4C B0 23
20 09 48 4C AF CF 00 31 40 45 40 61 40 81 80 A9 40
30 D1 C0 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 C4 8E 21 00 00 1A 02 3A 80 18 71 38 2D 40
50 58 2C 45 00 C4 8E 21 00 00 1E 00 00 00 FD 00 30
60 58 1F 64 11 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 59

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0 02 03 04 00 0E 1F 00 80 51 00 1E 30 40 80 37 00

10 C4 8E 21 00 00 1C 00 00 00 00 00 00 00 00 00 00
20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
50 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 25

- 11 -

(1) Color analyzer : CA-210(CH 9)

- When you adjust LCD color temperature, on color

analyzer (CA-210), you should use Channel 9 which is
Matrix compensated (White, Red, Green, Blue revised)
by CS-1000 and adjust in accordance with White balance
adjustment coordinate which is specified on the next.

(2) Automatic adjustor (with automatic adjustment hour

necessity and the RS-232C communication being possible.
Baud Rate = 115200)

(3) Video Signal Generator MSPG-925F 720p, 216 Gray

(Model : 217, Pattern : 78)

(Automatic Adjustment)

Basically it uses the internal pattern but when internal pattern
is not possible, you can select HDMI input for adjustment.
Through the option at the most bottom part of the Ez Adjust
Menu 5.White Balance menu, you can select NONE, INNER,
HDMI, and the default is set to INNER. When the adjustment
cannot be done with the internal pattern, you can select HDMI
input for adjustment.

For manual adjustment, press the ADJ KEY of the adjustment
R/C to enter Ez Adjust 6.White-Balance, and the pattern is
automatically displayed. (When you set the Option to INNER,
the default is always set to INNER)

1) Connect the set according to the internal pattern or HDMI

input in accordance with 5.2 measuring device connection
diagram. 

2) Set the Baud Rate of RS-232C to 115200. It is set to

115200 as default.

3) Connect the RS-232C Cable to the set.

4) Connect the HDMI Cable to the set. (Limited to the set with

HDMI option)

5) Select and adjust the model applicable to LB73B chassis

from the adjuster.

Caution) When you adjust automatically, RS-232C Command

is used.

Caution) Adjustment map

* White Balance adjustment (For automatic adjustment)

- Execute Power Only Key of the adjustment R/C to execute

automatic adjustment. Set the Baud Rate to 115200.

- Always start adjustment with “wb 00 00” and end
adjustment with “wb 00 ff”
- Adjust the offset if necessary.

R Gain

G Gain

B Gain

R Cut

G Cut

B Cut

CENTER

(DEFAULT)(Hex)

00

00

00

192

192

192

127

127

127

Min

Max

192

192

192

64

64

64

Cool

192

192

192

64

64

64

Mid

192

192

192

64

64

64

Warm

RS-232C COMMAND

[CMD ID DATA]

jg

jh

ji

Cool

ja

jb

jc

Mid

jd

je

jf

Warm

Color Analyzer

F u l l W h i t e P at t er n

R S-232C

(Inner Pattern)

<Fig. 3> Connection diagram for internal pattern

<Fig. 4> Connection diagram for HDMI input

Remark

RS-232C Command

[CMD  ID  DATA]

wb

wb

wb

wb

wb

wb

00

00

00

00

00

00

00

10

1f

20

2f

ff

Start white balance adjustment

End Gain adjustment

End Offset adjustment

(For manual adjustment)

: When adjusting the LCD white balance, use CS-1000 as
the color analyzer (CA-210) and channel 9 corrected of
Matrix (corrected for White, Red, Green, Blue) and the
adjustment must be done in accordance with the below
White balance adjustment coordinate.

1) Press the ADJ of adjustment adjustment remote control

to enter ‘EZ-ADJUST’.

2) Select 9.TEST PATTERN using the CH + / - KEY and

press the Enter KEY to execute a heat run for more
than 30 minutes. 

3) Execute a Zero Calibration for CA-210 and put it at

distance of less than 10Cm from the LCD module
surface center during the adjustment. 

4) Press the ADJ of adjustment remote control, select

‘6.White-Balance’ of ‘Ez – Adjust’ and enter the
adjustment mode using the right key (

G

).

(When you press the 

G

button, the screen enters the full

white internal pattern.)

5) The adjustment is executed in 3 different white balance

of COOL, MEDIUM and WARM.

2) In case that White balance is COOL.

- Fix R-Cut/ G-Cut/ B-Cut to 64 and adjust the color

coordinates t downward.

In case that White balance is Medium.
- Fix R-Cut/ G-Cut/ B-Cut to 64 and adjust the color

coordinates t downward.

In case  that White balance is Warm
- Fix R-Cut/ G-Cut/ B-Cut to 64 and adjust the color

coordinates t downward.

- Adjust by using Vol ± key.

4) When the adjustment is completed, press the OK (

A

)

key button to move to the Ez –Adjust screen. Press the
ADJ KEY to exit the adjustment mode.

* Note : White Balance adjustment coordinate and white balance

1) Standard white balance standard white balance

coordinate when using CS-1000 device
COOL : T=11000K, Δuv=0.000, x=0.276, y=0.283
MEDIUM : T=9300K, Δuv=0.000, x=0.285, y=0.293
WARM : T=6500K, Δuv=0.000, x=0.313, y=0.329

2) Directed color coordinate when using CA-210 CH 9

* Brightness: Full white 216gray 

This is a adjustment to reduce the color difference of RF,
video signal.

1) Connect the Video Signal Generator (Master) to TV AV

input terminal with AV output. At this time, when you enter
the input pattern as Model : 202(PAL), Pattern : 33(100%
color Bar), the following video is displayed on the screen.

* Because the above pattern can differ by the model and

pattern for each device, you must check the pattern first.

2) When the receiving signal is confirmed after inputting the

internal signal, press the ADJ key on the adjustment
remote control to enter ‘EZ-ADJUST’. Select ‘3.Adjust RF
and Video’ and press the right key (

G

) to enter the

adjustment mode.

3) When you enter the adjustment mode, the video is

automatically set to TV 3CH and the following window is
displayed.

4) When the adjustment is completed, a message saying ‘RF

Configuration Success’ is displayed. If the adjustment has
failed, a message saying ‘RF Configuration Fail’ is
displayed.

5) When the automatic adjustment of RF signal is completed,

it is automatically switched to the AV1 Mode, and
automatic adjustment for Video Mode is done. When the
automatic adjustment is completed, a message saying ‘AV-
PAL Configuration Success’ is displayed. If the adjustment
has failed, a message saying ‘AV-PAL Configuration Fail’
is displayed.

- 12 -

Color temperature

Color analyzer

Color coordinate

X

Y

COOL

CA-210

0.276 ± 0.002

0.283 ± 0.002

MEDIUM

CA-210

0.285 ± 0.002

0.293 ± 0.002

WARM

CA-210

0.313 ± 0.002

0.329 ± 0.002

<Fig 5> Model : 202(PAL), Pattern 33(100% color Bar)

 

<Fig 6>