LG 50PQ30R User manual

PLASMA TV
MANUAL DE SERVIÇO
ATENÇÃO
Antes de reparar este chassis, leia as PRECAUÇÕES DE SEGURANÇA
contidas neste manual.
CHASSIS : PP91A
MODELO : 50PQ30R 50PQ30R-MA
North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com
Internal Use Only

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Only for training and service purposes
CONTEÚDO
CONTEÚDO.............................................................................................................................. 2
PRECAUÇÕES DE SEGURANÇA ...........................................................................................3
ESPECIFICAÇÃO .....................................................................................................................4
INSTRUÇÕES DE REGULAÇÃO .............................................................................................8
DIAGRAMA DE BLOCOS........................................................................................................16
VISTAS EXPLODIDAS............................................................................................................ 17
DIAGRAMA ELÉTRICO...............................................................................................................
PAINEL DE CIRCUITO IMPRESSO ............................................................................................

- 3 - LGE Internal Use OnlyCopyright©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
PRECAUÇÕES DE SEGURANÇA
ADVERTÊNCIA : Antes de reparar este chassis., leia as “ PRECAUÇÕES DE RADIAÇÃO POR RAIO X “, “ INSTRUÇÕES
DE SEGURANÇA “ e “ AVISO SOBRE SEGURANÇA DE PRODUTOS “.
Muitas partes elétricas e mecânicas neste chassis, tem características relacionadas com a segurança. Estas características
frequentemente não são verificadas nas inspeções visuais e a proteção que proporcionam contra a RADIAÇÃO DE RAIO “ X “ nem
sempre se obtem utilizando componente com maior potência ou de maior isolação. As peças que têm essas características de
segurança são identificadas por uma marca [ ] impressa sobre o diagrama esquemático e a marca [ ★] impressa na lista de
partes elétricas. Antes de substituir algum destes componentes, leia cuidadosamente este manual. O uso de peças de reposição que
não tenham as mesmas características de segurança, como especificado na lista de material de reposição, pode gerar Radiação de
Raios “X”.
1. Quando o receptor está em operação, são geradas tensões
potencialmente altas em torno de 25-29 kV. Operar o receptor
fora de seu gabinete ou com a tampa traseira removida pode
causar perigo de choque elétrico.
(1) Ninguém deverá tentar reparar o aparelho sem estar
familiarizado com as precauções que são necessárias
quando se trabalha com um equipamento de alta tensão.
(2) Sempre descarregue o anodo do cinescópio ao terra para
evitar o risco de choque elétrico antes de remover o conector
do anodo (chupeta de alta tensão).
(3) Descarregue completamente o potencial do cinescópio
antes de manuseá-lo. O cinescópio é de alto vácuo, e se
quebrar, os fragmentos de vidro são expelidos violentamente.
2. S e queimar algúm fusível deste receptor de televisão,
substitua-o por outro especificado na lista de peças elétricas.
3. Quando substituir placas de circuito impresso ou módulos, fixe
seus fios nos terminais antes de soldar.
4. Quando substituir uma resistência de potência (resistor de
película de óxido metálico) no painel de circuito impresso,
mantenha os seus terminais com 10mm de distância do
painel.
5. Mantenha os fios e cabos distantes de componentes de alta
potência e de alta temperatura.
6. Este receptor deve operar em redes de 100 a 240 V AC.
7. Antes de devolver este aparelho ao cliente, faça uma
verificação de fuga de corrente sobre as partes metálicas
expostas do gabinete, tais com antenas, terminais, cabeças
de parafusos, tampas de metal, alavancas de controle, etc., e
certifique-se de que o aparelho funciona sem perigo de
choque elétrico. Ligue o cabo de rede do aparelho
diretamente a uma tomada de força de 100-240 V AC. Não
utilize um transformador de isolação durante este teste.
Utilize um voltímetro de no mínimo 1KW por Volt de
sensibilidade, da forma que se segue.
Quando a unidade estiver conectada ao AC, pulse o
comutador primeiramente em “ON” (ligado) e em seguida em
“OFF” (desligado), meça desde um ponto de terra conhecido
(tal como um terminal de terra central da rede elétrica) a
todas as partes metálicas expostas do televisor ( antenas,
teclas metálicas, capas metálicas, alavancas de controle,
etc..) especialmente qualquer parte metálica que possa
oferecer um caminho ao chassis. Nenhuma medição de
corrente elétrica deve exceder 0,5 mA. Repita a prova
mudando a posição do pluque de rede na tomada AC.
Qualquer medição que não esteja dentro dos limites aqui
especificados, representam risco potencial de choque elé
trico que deve ser sanado antes que o aparelho retorne ao
cliente.
INSTRUÇÕES DE SEGURANÇA
AVISO SOBRE SEGURANÇA DE PRODUTO
DEVICE
UNDER
TEST
TEST ALL
EXPOSED MET AL
SURFACES
2-WIRE CORD
ALSO TEST WITH
PLUG REVERSED
(USING AC ADAPTER
PLUG AS REQUIRED)
EAR TH
GROUND
LEAKAGE
CURRENT
TESTER
(READING SHOULD
NO T BE ABOVE
0.5mA)
+-
Aparelho
a ser
examinado
Probador
de fuga de
corriente
A leitura não deve
exceder 0.5mA
Prove todas as
superficies
metálicas
Também prove com
o plugue de rede
invertendo a
polaridade
Terra

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Only for training and service purposes
ESPECIFICAÇÃO
NOTE : Specifications and others are subject to change without notice for improvement .
VApplication Range
This spec is applied to PDP TV used PP91A/B Chassis.
V Specification
Each part is tested as below without special appointment.
1) Temperature : 25±5°C (77±9°F), CST : 40±5
2) Relative Humidity: 65±10%
3) Power Voltage: Standard Input voltage (100-240V~, 50/60Hz)
* Standard Voltage of each product is marked by models.
4) Specification and performance of each parts are followed each drawing and specification by part number in accordance with SBOM.
5) The receiver must be operated for about 20 minutes prior to the adjustment.
VTest Method
1) Performance : LGE TV test method followed.
2) Demanded other specification
Safety : CE, IEC specification
EMC : CE, IEC
Chassis
PP91A/B 50PQ30R-MA
50PQ60R-TA
42PQ600R-ZA
42PQ200R-ZA
50PQ200R-ZA
42PQ70BR-TA
42PQ60R-MA
42PQ30R-TA
Central and South America
NON-EU
EU
EU
EU
NON-EU
Central and South America
NON-EU
LG
Model Name Market Brand Remark
Model Name
42PQ600R-ZA
42PQ200R-ZA
50PQ200R-ZA
50PQ60R-TA
42PQ70BR-TA
42PQ30R-TA
50PQ30R-MA
42PQ60R-MA
Remark
Safety: IEC/EN60065, EMI: EN55013,
EMS: EN55020
Safety: IEC/EN60065, EMI: CISPR13
Market
EU
NON-EU
Central and South
America
Appliance
TEST
TEST

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Only for training and service purposes
VModule Specification
(1) 42” XGA
(2) 50” WXGA
(3) 50” FHD
Display Screen Device
Aspect Ratio
PDP Module
Operating Environment
Storage Environment
Input Voltage
1
2
3
4
5
6
No Item Specification Remark
50 inch 16:9 Color plasma Display Module
16:9
PDP50G2####,
RGB Closed(Well) Type
1) Temp. : 0 ~ 55deg
2) Humidity : 20 ~ 80%
3) Temp. : -10 ~ 60deg
4) Humidity : 10 ~ 90%
AC100-240V~, 50/60Hz
PDP
Glass Filter
LGE SPEC.
Maker: LGIT
Display Screen Device
Aspect Ratio
PDP Module
Operating Environment
Storage Environment
Input Voltage
1
2
3
4
5
6
No Item Specification Remark
50 inch 16:9 Color plasma Display Module
16:9
PDP50H3####,
RGB Closed Type
1) Temp. : 0 ~ 55deg
2) Humidity : 20 ~ 80%
3) Temp. : -10 ~ 60deg
4) Humidity : 10 ~ 90%
AC100-240V~, 50/60Hz
PDP
Glass Filter
LGE SPEC.
Maker: LGIT
Display Screen Device
Aspect Ratio
PDP Module
Operating Environment
Storage Environment
Input Voltage
1
2
3
4
5
6
No Item Specification Remark
42 inch 16:9 Color plasma Display Module
16:9
PDP42G2####,
RGB Closed Type
1) Temp. : 0 ~ 60deg
2) Humidity : 20 ~ 80%
3) Temp. : -20 ~ 60deg
4) Humidity : 10 ~ 90%
AC100-240V~, 50/60Hz
PDP
Glass Filter
LGE SPEC.
Maker: LGIT

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Only for training and service purposes
VModel General Specification
(1) EU Spec.(ZA)
(2) NON-EU Spec.(TA)

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Only for training and service purposes
(3) Central and South America(MA)

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Only for training and service purposes
INSTRUÇÕES DE REGULAÇÃO
1. Application Range
This spec sheet is applied to all of the PP91A/B chassis.
2. Specification
(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) Adjustment must be done in the correct order.
(3) The 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.
(4) The input voltage of the receiver must keep 100~240V,
50/60Hz.
(5) The receiver must be operated for about 5 minutes prior to
the adjustment when module is in the circumstance of over
15°
- In case of keeping module is in the circumstance of 0°C,
it should be placed in the circumstance of above 15°C for
2 hours
- In case of keeping module is in the circumstance of below
-20°C, it should be placed in the circumstance of above
15°C for 3 hours,.
3. S/W Program Download
3-1. Profile
This is for downloading the s/w to the flash memory of the
IC603
3-2. Equipment
(1) PC
(2) ISP_tool program
(3) Download jig
3-3. Connection Structure
3-4. Connection Condition
(1) IC name and circuit number : Flash Memory and IC603
(2) Use voltage : 3.3V (5 pin)
(3) SCL : 15 pin
(4) SDA : 12 pin
(5) Tact time : about 2min and 30seconds
3-5. Download Method (By using MSTAR JIG)
(1) Preliminary Steps
1) Connect the download jig to D-sub jack
2) Connect the PC to USB jack
(2) Download Steps
1) Execute ‘ISP Tool’ program in PC, then a main window will
be opened
Double click

2) Click the connect button and confirm “Dialog Box”.
3) Click the Config button and Change speed
E2PROM Device setting : over the 350Khz
4) Read and write bin file
Click “(1)Read”tab, and then load download file(XXXX.bin)
by clicking “Read”.
5) Click “Auto(2)”tab and set as below
6) Click “Run(3)”.
7) After downloading, check “OK(4)”message.
3-6. Download Method (By using USB
Memory Stick)
[Caution]
- Using ‘power on’button of the control R/C, power on TV.
- USB file (EPK) version must be bigger than downloaded
version of main B/D.
(1) Using ‘Power ON’button of the control R/C, Power on TV.
(2) Insert the USB memory stick to the SET.
(3) Display USB loding message then, push the ‘Exit’Key of
control R/C
(4) Push the ‘MENU’Key and move the cusor ‘OPTION’of
OSD ( Fig. 1)
* Caution: Don’t push the ‘OK’key.Just cusor is on the
‘OPTION’menu.
(5) Push the “7”key of control R/C continuously.
Then, Display “TV Software Update”Pop-up menu. (Fig. 2)
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Only for training and service purposes
( Fig. 1)
( Fig. 2)

(6) Select SW file (XXXX.bin) you want, push the “OK”Key.
(7) S/W download process is excuted automatically.
4. PCB Assembly Adjustment Method
4-1. Option Adjustment Following BOM
Tool Option
Area Option
Option 1
Option 2
Option 3(Available for EU & Non EU model)
* Profile: Must be changed the option value because being
different with some setting value depend on module, inch
and market
* Equipment : Adjustment Remote Controller
(1) Push the IN-START key in the Adjust R/C.
(2) Enter Password number. The value of Password is “0 0 0
0”.
(3) Input the Option Number that was specified in the BOM,
into the Shipping area.
(4) Select “Tool Option/ Area Option”by using D/E(CH+/-)
key, and press the number key(0~9) consecutively
ex) If the value of Tool Option1 is 4, input the data using
number key “4”(Fig. 3)
Caution: Don’t Push “IN-STOP”key after PCB assembly
adjustment.
(5) EDID D/L Method
After software D/L or PCBA manufacturing, you can
download EDID Data.
When you adjust Tool Option, H6 Model EDID download
process is executed automatically
* If the model don’t have HDMI 3, HDMI 3 will be disappeared
at OSD Window.
Caution: When you adjust tool option, don’t connect HDMI or D-
sub cable.
If you connect some cable, EDID D/L process will be
failed.
(6) Adjustment method
Before PCBA check, have to change the Tool option and Area
option
[About PDP
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 Change “RF mode”and 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.
[Don’t push The IN-STOP KEY after completing the function
inspection.
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Only for training and service purposes
.
.
.
.
MODEL : XXXXXX Module : XXXX
S/W Ver. : X.XX ROM : XXXXXXX
UTT X Temp : xxxxx : Celsius
ADC CAL.
RGB : OK
Component SD OK
Component HD OK
EDID RGB(OK) HDMI1(NG) HDMI2(NG) HDMI3(NG)
Tool Option 4
Area Option 40
Option 1 17
Option 2 40
.
.
MODEL : XXXXXX Module : XXXX
S/W Ver. : X.XX ROM : XXXXXXX
UTT X Temp : xxxxx : Celsius
ADC CAL.
RGB : OK
Component SD OK
Component HD OK
EDID RGB(OK) HDMI1(OK) HDMI2(OK) HDMI3(OK)
Tool Option 4
Area Option 40
Option 1 17
Option 2 40
( Fig. 3)

5. EDID(The Extended Display
Identification Data)
Originally H6(PP91A/B) Model EDID download process is
executed when you adjust Tool Option.
[Caution
- Use the proper signal cable for EDID Download
- Never connect HDMI & D-SUB Cable at the same time.
- Use the proper cables below for EDID Writing
5-1. Profile:To be possible for plug and play
5-2. Equipment
(1) Adjusting PC with S/W for writing EDID Data.(S/W: EDID
TESTER Ver.2.5)
(2) A Jig for EDID Download
(3) Cable : Serial(9Pin or USB) to D-sub 15Pin cable, D-sub
15Pin cable, DVI to HDMI cable.
5-3. Connection Structure
Caution: Never connect HDMI & D-SUB Cable at the same time.
5-4. EDID Data
OWXGA EDID DATA(50inch)
<Analog(RGB) : 128bytes>
<HDMI 1 : 256bytes>
<HDMI 2 : 256bytes>
<HDMI 3 : 256bytes> SIDE HDMI(HDMI 3) is adjusted above
60Tool model
OXGA EDID DATA(42inch)
<Analog(RGB) : 128bytes>
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Connection Diagram of EDID

<HDMI 1 : 256bytes>
<HDMI 2 : 256bytes>
<HDMI 3 : 256bytes> SIDE HDMI(HDMI 3) is adjusted above
60Tool model
6. HDCP(High-Bandwidth Digital
Contents Protection) Download
HDCP download process is deleted in H6 models
In H6 models, it is usimg the EEPROM masking HDCP Key
7. Manual ADC Adjustment
(Component 1, RGB)
[Caution]
- Do not connect external input cable
- Adjustment result is applied to SET On/Off later.
* Adjustment is done using internal ADC, so input signal is not
necessary.
7-1. COMPONENT ADC (SD / HD)
(1) Convert to Component1 input source.
(2) Press ADJ key on R/C for adjustment.
(3) Enter Password number. The value of Password is “0 0 0
0”.
(4) Select “0. ADC calibration”by using D/E(CH +/-) and press
ENTER(V).
(5) Start ADC adjustment by using F/G(VOL +/-) or press
ENTER(V).
(6) ADC adjustment is executed automatically .
When ADC adjustment is finished, this OSD appear.
7-2. RGB input ADC
Auto RGB Gain/Offset Adjustment
(1) Convert to PC in Input-source
(2) Press ADJ key on R/C for adjustment.
(3) Enter Password number. The value of Password is “0 0 0
0”.
(4) Select “0. ADC calibration”by using D/E(CH +/-) and press
ENTER(V).
(5) Start ADC adjustment by using F/G(VOL +/-) or press
ENTER(V).
(6) ADC adjustment is executed automatically .
When ADC adjustment is finished, this OSD appear.
Notice : After All mode check, set the Speaker Volume “0”.
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RF input
NO SIGNAL or White noise
AV / Component / RGB input
NO SIGNAL

Notice : From this sentence, All working is mass production.
8. POWER PCB Assy Voltage
Adjustment(Vs voltage Adjustment)
8-1. Test Equipment:D.M.M 1EA
8-2. Connection Diagram for Measuring
Refer to (Fig. 4)
8-3. Adjustment Method
(1) Vs Adjustment
1) Connect + terminal of D. M..M. to Vs pin of P702,
connect -terminal to GND pin of P702.
2) After turning VR901, voltage of D.M.M adjustment as
same as Vs voltage which on label of panel right/top (
deviation ; ±0.5V)
9. Adjustment of White Balance
9-1. Purpose and Principle for Adjustment
of the Color Temperature
(1) Purpose: Adjust the color temperature to reduce the
deviation of the module color temperature.
(2) Principle : To adjust the white balance without the
saturation, Fix the one of R/G/B gain to C0 and decrease
the others.
(3) Adjustment mode: Two modes of Cool, Warm and Medium
9-2. Required Equipment
(1) Remote controller for adjustment
(2) Color Analyzer : CA-100+ or CA-210 or same product
- PLASMA TV(ch : 10)
(3) Auto W/B adjustment instrument(only for Auto adjustment)
- Do the white balance adjustment under the 10LUX
[Notice: When using the Color Analyzer with PDP,
recommend the CA-100 more than CA-210.
If CA-100 can not available, it is also good to use the CA-210.
(4) PC (for communication through RGB)
(5) Pattern Generator (MSPG-925FA etc.)
-Before white balance, press the ADJ key and select third
row like (Fig. 5)
-To enter White-balance mode, Enter Password Number “0
0 0 0”and select third row.
[Caution: System control Host should be “DDC”for adjustment.
(6) Adjust W/B DATA, for all CSM, choose ‘COPY ALL’
9-3. Connecting Diagram of Equipment for
Measuring(For Automatic Adjustment)
(Method 2, using RS-232C, You connect RS-232C Cable)
(1) Enter the adjustment mode of the white balance
- Enter the white balance adjustment mode at the same time
heat-run mode when pushing the power on by power only
key
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P811 Vs ADJ
VR901
(Fig. 4)
EZ ADJUST
0. ADC CALIBRATION : TV
1. ADC ADJUST
2. SUB B/C ADJUST
3. W/B ADJUST
4. WHITE PATTERN : OFF
5. EDID D/L
(Fig. 5)
3. W/B ADJUST
Mode : TV
TEMPERATURE : Medium
R-Gain. : 192
G-Gain. : 192
B-Gain. : 192
R-Offset : 128
G-Offset : 128
B-Offset : 128
COPY ALL
(Fig. 6)
Method 2-(RS-232C)

- Maintain the white balance adjustment mode with same
condition of Heat-run
- Maintain after AC off/on in status of Heat-run pattern display
(2) Release the white balance adjustment mode
- Release the adjust mode after AC off/on or std-by off/on in
status of finishing the Hear-run mode
- Release the Adjust mode when receiving the aging off
command(F3 00 00) from adjustment equipment)
(3) Enter the adjust mode of white balance
- Enter the white balance adjustment mode with aging
command(F3, 00, FF)
9-4. Adjustment of White Balance for
Manual Adjustment(method 3)
Adjustment mode: Three modes of Cool, Medium(Vivid) and
Warm
- Equipment : 1) Color analyzer(CA100+, CA210) should be
used in the calibrated ch by CS-1000(PDP :
CH10)
2) Adjustment remocon
- For manual adjustment, it is also possible by the following
sequence.
Operate the zero-calibration of the CA-100+ or CA-210, then
stick sensor to the module when adjusting.
(1) Select white pattern of heat-run by pressing “POWER ON”
key on remote control for adjustment then operate heat run
longer than 5 minutes. (recommend)
(If not executed this step, the condition for W/B will be
different)
(2) Changing to the AV mode by remote control.(Push front-
AV)
(3) Input external pattern(85% white pattern).
(4) Stick sensor to center of the screen and select each items
(Red/Green/Blue Gain and Offset) using D/E(CH +/-) key
on R/C..
(5) Adjust R/ G/ B Gain using F/G(VOL +/-) key on R/C.
(6) Adjust three modes of Cool, Medium(Vivid) and Warm as
below figure.
(Fix the one of R/G/B and change the others)
- Push the “VOL + “key : Cool, Medium, Warm
[ Refer to the below case to know what value is fixed.
[CASE]
First adjust the coordinate much away from the target value(x, y).
1. x, y > target
1) Decrease the R, G.
2. x, y < target
1) First decrease the B gain,
2) Decrease the one of the others.
- In case of decreasing the x, decreasing the R : fix G
- In case of decreasing the y , decreasing the G : fix R
3. x > target , y < target
1) First decrease B, so make y a little more than the target.
2) Adjust x value by decreasing the R
4. x < target , y > target
1) First decrease B, so make x a little more than the target.
2) Adjust x value by decreasing the G
(7) When adjustment is completed, Exit adjustment mode
using EXIT key on R/C.
9-5. Connecting diagram of Equipment for
Measuring(For Automatic Adjustment)
(method 1, using IIC, You connect RGB Cable)
(1) Enter the adjustment mode of the white balance
- Enter the white balance adjustment mode at the same time
heat-run mode when pushing the power on by power only
key
- Maintain the white balance adjustment mode with same
condition of Heat-run
- Maintain after AC off/on in status of Heat-run pattern display
(2) Release the white balance adjustment mode
- Release the adjust mode after AC off/on or std-by off/on in
status of finishing the Hear-run mode
- push the “power on”key(IIC Mode) on Adjust remote-
controller.
- Release the Adjust mode when receiving the aging off
command(F3 00 00) from adjustment equipment)
(3) Enter the adjust mode of white balance
- Enter the white balance adjustment mode with aging
command(F3, 00, FF)
OColor Temperature & Color Coordinates Setting
- When adjusting the Color Temperature, Color Analyzer CA-
210(Matrix should be corrected through CH10 of CS-1000)
should be used. When CA-210 have used, it don’t need to fit
the CH10.
- Adjust the Color Temperature based below adjustment color
coordinates.
OTarget Value CA-210(LCD : CH 9, PDP : CH10), CA-100(PDP)
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+0.0036,500K
Warm
+0.0009,300K
Medium
+0.00011,000K
Cool 0.276–0.002
0.285–0.002 0.293–0.002
0.329–0.002
0.313–0.002
0.283–0.002
YX uvTemp
Color coordinate
Mode
Method 1-(I2C)

(Standard color coordinate and temperature when using the
CA-100+ or CA210 equipment) OAbove optical characteristics are should be measured by following condition.
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+0.0036,500K
Warm
+0.0009,300K
Medium
+0.00011,000K
Cool 0.276–0.002
0.285–0.002 0.293–0.002
0.329–0.002
0.313–0.002
0.283–0.002
YX uvTemp
Color coordinate
Mode
ODDC Adjustment Command Set
[R/G/B GAIN max value : C0
Adjustment
Adjustment
Adjustment

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Only for training and service purposes
DIAGRAMA DE BLOCOS

- 17 - LGE Internal Use Only
VISTAS EXPLODIDAS
400
602
208
200
580
300
305
301
303
A2
LV1
310
330
560
570
302
240
603
A10
900
120
501
201
204
205
202
207
590
250
520
601
901
206
Many electrical an mechanical parts in this chassis have special safety-relate characteristics. These
parts are i entifie by in the Schematic Diagram an EXPLODED VIEW.
It is essential that these special safety parts shoul be replace with the same components as
recommen e in this manual to prevent X-RADIATION, Shock, Fire, or other Hazar s.
Do not mo ify the original esign without permission of manufacturer.
IMPORTANT SAFETY NOTICE

LGE Internal Use OnlyCopyright©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use OnlyCopyright©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use OnlyCopyright©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes