LG 47LB1DA-UB User manual

LCD TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : LA61B
MODEL : 47LB1DA-UB
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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CONTENTS
CONTENTS .............................................................................................. 2
PRODUCT SAFETY ..................................................................................3
SPECIFICATION........................................................................................6
ADJUSTMENT INSTRUCTION ...............................................................10
SVC REMOCON ......................................................................................16
VIDEO TROUBLE SHOOTING&BLOCK DIAGRAM ..............................17
AUDIO TROUBLE SHOOTING&BLOCK DIAGRAM..............................40
EXPLODED VIEW .................................................................................. 51
EXPLODED VIEW PARTS LIST..............................................................52
REPLACEMENT PARTS LIST ............................................................... 53
SVC. SHEET ...............................................................................................

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SAFETY PRECAUTIONS
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the
Schematic Diagram and Replacement Parts List.
It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent
Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
General Guidance
An isolation Transformer should always be used during the
servicing of a receiver whose chassis is not isolated from the AC
power line. Use a transformer of adequate power rating as this
protects the technician from accidents resulting in personal injury
from electrical shocks.
It will also protect the receiver and it's components from being
damaged by accidental shorts of the circuitry that may be
inadvertently introduced during the service operation.
If any fuse (or Fusible Resistor) in this TV receiver is blown,
replace it with the specified.
When replacing a high wattage resistor (Oxide Metal Film Resistor,
over 1W), keep the resistor 10mm away from PCB.
Keep wires away from high voltage or high temperature parts.
Before returning the receiver to the customer,
always perform an AC leakage current check on the exposed
metallic parts of the cabinet, such as antennas, terminals, etc., to
be sure the set is safe to operate without damage of electrical
shock.
Leakage Current Cold Check(Antenna Cold Check)
With the instrument AC plug removed from AC source, connect an
electrical jumper across the two AC plug prongs. Place the AC
switch in the on position, connect one lead of ohm-meter to the AC
plug prongs tied together and touch other ohm-meter lead in turn to
each exposed metallic parts such as antenna terminals, phone
jacks, etc.
If the exposed metallic part has a return path to the chassis, the
measured resistance should be between 1MΩand 5.2MΩ.
When the exposed metal has no return path to the chassis the
reading must be infinite.
An other abnormality exists that must be corrected before the
receiver is returned to the customer.
Leakage Current Hot Check (See below Figure)
Plug the AC cord directly into the AC outlet.
Do not use a line Isolation Transformer during this check.
Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor
between a known good earth ground (Water Pipe, Conduit, etc.)
and the exposed metallic parts.
Measure the AC voltage across the resistor using AC voltmeter
with 1000 ohms/volt or more sensitivity.
Reverse plug the AC cord into the AC outlet and repeat AC voltage
measurements for each exposed metallic part. Any voltage
measured must not exceed 0.75 volt RMS which is corresponds to
0.5mA.
In case any measurement is out of the limits specified, there is
possibility of shock hazard and the set must be checked and
repaired before it is returned to the customer.
Leakage Current Hot Check circuit
1.5 Kohm/10W
To Instrument's
exposed
METALLIC PARTS
Good Earth Ground
such as WATER PIPE,
CONDUIT etc.
AC Volt-meter
IMPORTANT SAFETY NOTICE
0.15uF

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CAUTION: Before servicing receivers covered by this service
manual and its supplements and addenda, read and follow the
SAFETY PRECAUTIONS on page 3 of this publication.
NOTE: If unforeseen circumstances create conflict between the
following servicing precautions and any of the safety precautions on
page 3 of this publication, always follow the safety precautions.
Remember: Safety First.
General Servicing Precautions
1. Always unplug the receiver AC power cord from the AC power
source before;
a. Removing or reinstalling any component, circuit board
module or any other receiver assembly.
b. Disconnecting or reconnecting any receiver electrical plug or
other electrical connection.
c. Connecting a test substitute in parallel with an electrolytic
capacitor in the receiver.
CAUTION: A wrong part substitution or incorrect polarity
installation of electrolytic capacitors may result in an
explosion hazard.
2. Test high voltage only by measuring it with an appropriate high
voltage meter or other voltage measuring device (DVM,
FETVOM, etc) equipped with a suitable high voltage probe.
Do not test high voltage by "drawing an arc".
3. Do not spray chemicals on or near this receiver or any of its
assemblies.
4. Unless specified otherwise in this service manual, clean
electrical contacts only by applying the following mixture to the
contacts with a pipe cleaner, cotton-tipped stick or comparable
non-abrasive applicator; 10% (by volume) Acetone and 90% (by
volume) isopropyl alcohol (90%-99% strength)
CAUTION: This is a flammable mixture.
Unless specified otherwise in this service manual, lubrication of
contacts in not required.
5. Do not defeat any plug/socket B+ voltage interlocks with which
receivers covered by this service manual might be equipped.
6. Do not apply AC power to this instrument and/or any of its
electrical assemblies unless all solid-state device heat sinks are
correctly installed.
7. Always connect the test receiver ground lead to the receiver
chassis ground before connecting the test receiver positive
lead.
Always remove the test receiver ground lead last.
8. Use with this receiver only the test fixtures specified in this
service manual.
CAUTION: Do not connect the test fixture ground strap to any
heat sink in this receiver.
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid-state) devices can be damaged easily
by static electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices. Examples of typical ES
devices are integrated circuits and some field-effect transistors and
semiconductor "chip" components. The following techniques
should be used to help reduce the incidence of component
damage caused by static by static electricity.
1. Immediately before handling any semiconductor component or
semiconductor-equipped assembly, drain off any electrostatic
charge on your body by touching a known earth ground.
Alternatively, obtain and wear a commercially available
discharging wrist strap device, which should be removed to
prevent potential shock reasons prior to applying power to the
unit under test.
2. After removing an electrical assembly equipped with ES
devices, place the assembly on a conductive surface such as
aluminum foil, to prevent electrostatic charge buildup or
exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES
devices.
4. Use only an anti-static type solder removal device. Some solder
removal devices not classified as "anti-static" can generate
electrical charges sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate
electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective
package until immediately before you are ready to install it.
(Most replacement ES devices are packaged with leads
electrically shorted together by conductive foam, aluminum foil
or comparable conductive material).
7. Immediately before removing the protective material from the
leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be
installed.
CAUTION: Be sure no power is applied to the chassis or circuit,
and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged
replacement ES devices. (Otherwise harmless motion such as
the brushing together of your clothes fabric or the lifting of your
foot from a carpeted floor can generate static electricity
sufficient to damage an ES device.)
General Soldering Guidelines
1. Use a grounded-tip, low-wattage soldering iron and appropriate
tip size and shape that will maintain tip temperature within the
range or 500 F to 600 F.
2. Use an appropriate gauge of RMA resin-core solder composed
of 60 parts tin/40 parts lead.
3. Keep the soldering iron tip clean and well tinned.
4. Thoroughly clean the surfaces to be soldered. Use a mall wire-
bristle (0.5 inch, or 1.25cm) brush with a metal handle.
Do not use freon-propelled spray-on cleaners.
5. Use the following unsoldering technique
a. Allow the soldering iron tip to reach normal temperature.
(500 F to 600 F)
b. Heat the component lead until the solder melts.
c. Quickly draw the melted solder with an anti-static, suction-
type solder removal device or with solder braid.
CAUTION: Work quickly to avoid overheating the
circuitboard printed foil.
6. Use the following soldering technique.
a. Allow the soldering iron tip to reach a normal temperature
(500 F to 600 F)
b. First, hold the soldering iron tip and solder the strand against
the component lead until the solder melts.
c. Quickly move the soldering iron tip to the junction of the
component lead and the printed circuit foil, and hold it there
only until the solder flows onto and around both the
component lead and the foil.
CAUTION: Work quickly to avoid overheating the circuit
board printed foil.
d. Closely inspect the solder area and remove any excess or
splashed solder with a small wire-bristle brush.
SERVICING PRECAUTIONS

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IC Remove/Replacement
Some chassis circuit boards have slotted holes (oblong) through
which the IC leads are inserted and then bent flat against the
circuit foil. When holes are the slotted type, the following technique
should be used to remove and replace the IC. When working with
boards using the familiar round hole, use the standard technique
as outlined in paragraphs 5 and 6 above.
Removal
1. Desolder and straighten each IC lead in one operation by gently
prying up on the lead with the soldering iron tip as the solder
melts.
2. Draw away the melted solder with an anti-static suction-type
solder removal device (or with solder braid) before removing the
IC.
Replacement
1. Carefully insert the replacement IC in the circuit board.
2. Carefully bend each IC lead against the circuit foil pad and
solder it.
3. Clean the soldered areas with a small wire-bristle brush.
(It is not necessary to reapply acrylic coating to the areas).
"Small-Signal" Discrete Transistor
Removal/Replacement
1. Remove the defective transistor by clipping its leads as close as
possible to the component body.
2. Bend into a "U" shape the end of each of three leads remaining
on the circuit board.
3. Bend into a "U" shape the replacement transistor leads.
4. Connect the replacement transistor leads to the corresponding
leads extending from the circuit board and crimp the "U" with
long nose pliers to insure metal to metal contact then solder
each connection.
Power Output, Transistor Device
Removal/Replacement
1. Heat and remove all solder from around the transistor leads.
2. Remove the heat sink mounting screw (if so equipped).
3. Carefully remove the transistor from the heat sink of the circuit
board.
4. Insert new transistor in the circuit board.
5. Solder each transistor lead, and clip off excess lead.
6. Replace heat sink.
Diode Removal/Replacement
1. Remove defective diode by clipping its leads as close as
possible to diode body.
2. Bend the two remaining leads perpendicular y to the circuit
board.
3. Observing diode polarity, wrap each lead of the new diode
around the corresponding lead on the circuit board.
4. Securely crimp each connection and solder it.
5. Inspect (on the circuit board copper side) the solder joints of
the two "original" leads. If they are not shiny, reheat them and if
necessary, apply additional solder.
Fuse and Conventional Resistor
Removal/Replacement
1. Clip each fuse or resistor lead at top of the circuit board hollow
stake.
2. Securely crimp the leads of replacement component around
notch at stake top.
3. Solder the connections.
CAUTION: Maintain original spacing between the replaced
component and adjacent components and the circuit board to
prevent excessive component temperatures.
Circuit Board Foil Repair
Excessive heat applied to the copper foil of any printed circuit
board will weaken the adhesive that bonds the foil to the circuit
board causing the foil to separate from or "lift-off" the board. The
following guidelines and procedures should be followed whenever
this condition is encountered.
At IC Connections
To repair a defective copper pattern at IC connections use the
following procedure to install a jumper wire on the copper pattern
side of the circuit board. (Use this technique only on IC
connections).
1. Carefully remove the damaged copper pattern with a sharp
knife. (Remove only as much copper as absolutely necessary).
2. carefully scratch away the solder resist and acrylic coating (if
used) from the end of the remaining copper pattern.
3. Bend a small "U" in one end of a small gauge jumper wire and
carefully crimp it around the IC pin. Solder the IC connection.
4. Route the jumper wire along the path of the out-away copper
pattern and let it overlap the previously scraped end of the good
copper pattern. Solder the overlapped area and clip off any
excess jumper wire.
At Other Connections
Use the following technique to repair the defective copper pattern
at connections other than IC Pins. This technique involves the
installation of a jumper wire on the component side of the circuit
board.
1. Remove the defective copper pattern with a sharp knife.
Remove at least 1/4 inch of copper, to ensure that a hazardous
condition will not exist if the jumper wire opens.
2. Trace along the copper pattern from both sides of the pattern
break and locate the nearest component that is directly
connected to the affected copper pattern.
3. Connect insulated 20-gauge jumper wire from the lead of the
nearest component on one side of the pattern break to the lead
of the nearest component on the other side.
Carefully crimp and solder the connections.
CAUTION: Be sure the insulated jumper wire is dressed so the
it does not touch components or sharp edges.

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SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement .
3. General Spec
1. Specification
Each part is tested as below without special appointment.
A. Temperature : 20±5°C
B. Relative Humidity : 65±10%
C. Power Voltage : Standard input voltage (100~240V@
50/60Hz)
* Standard Voltage of each product is marked by models
D. Specification and performance of each parts are followed
each drawing and specification by part number in
accordance with BOM.
E. The receiver must be operated for about 20 minutes prior to
the adjustment.
2. Test method
F. Performance : LGE TV test method followed
G. Demanded other specification
Safety : UL, CSA, IEC specification
EMC : FCC, ICES, IEC specification
No Item Specification Remark
1. Receiving System 1) ATSC/64 & 256 QAM/ NTSC-M
2. Available Channel 1) VHF : 02~13
2) UHF : 14~69
3) DTV : 02~69
4) CATV : 01~135
5) CADTV : 01~135
3. Input Voltage 1) AC 100 ~ 260V 50/60Hz 120V, 60Hz
4. Market NORTH AMERICA
5. Screen Size 47 inch Wide 47"
6. Aspect Ratio 16:9
7. Tuning System FS
8. Module 470WU1-SL01 1080p Full-HD
9. Operating Environment 1) Temp : 0 ~ 40 deg
2) Humidity : ~ 80 %
10. Storage Environment 1)Temp : -20 ~ 60 deg
2) Humidity : 0 ~ 90 %

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4. Chroma (SET With 45% Filter)
No Item Min Typ Max Unit Remark
1 White peak brightness 450 550 cd/m247LB1DA-UB
(Center 1-point / Full White Pattern)
2 White average brightness cd/m2N/A
3 Brightness uniformity 80 % Full white
4 Color coordinate RED X Typ. 0.638 Typ.
Y -0.03 0.340 +0.03
GREEN X 0.279
Y 0.611
BLUE X 0.146
Y 0.062
WHITE X 0.272
Y 0.278
5 Color coordinate uniformity N/A
6 Contrast ratio 600:1 800:1 W/O AI
1200:1 1600:1 With AI
7 Color Temperature Standard 8,300 9,300 10,300 <Test Condition>
Cool 11,000 12,000 13,000 HDMI Input,
Warm 5,500 6,500 7,500 85% Full white pattern
8 Color Distortion, DG 10.0 %
9 Color Distortion, DP 10.0 deg
10 Color S/N, AM/FM 43.0 dB
11 Color Killer Sensitivity -80 dBm
* Peak & average Brightness & Contrast measure standard specification
# White Peak brightness measure specification
1) In non-impressed condition , measure peak brightness displayable as much as possible LCD module.
2) Measuring instrument : CA-100 or a sort of Color Analyzer.
3) Pattern Generator : VG-828 or a sort of digital pattern generator (displayable Full White & 1/25 White Window pattern)
4) Measure condition
- Test pattern : in center, 1/5(H) * 1/5(V) of Window Pattern (white pattern in non-impressed condition)
- SET condition : Contrast & Brightness Level 100%
- Environment condition : Dark room in the non outside light
5) Measurement
- Impress test pattern signal in 1/5(H) * 1/5(V) White Window of 100%(255Gray Level)
- Measure 3 times brightness of central white window, and mark peak brightness in max brightness degree
- Measure the same condition in video signal /RGB signal.
* Average Brightness measure specification
1) Impress 100%(255Gray Level) full white pattern at the same peak brightness measurement.
2) Measure average brightness in 9 points.
* Contrast ratio measure specification
1) Test display signal : 30*30 dots White Window signal & all Black Raster signal
2) Dark room measure condition : Using touch type Color analyzer CA-100 Dark room in the non outside light
3) Bright room measure condition : In bright room of 150Lx illumination in the panel surface, locate a source of light on the above
45° of the panel surface.
4) Measure method
- In standard test condition, impress 30*30 dots White Window Pattern signal .
Measure center peak brightness degree Lw of white window
- Impress black Raster signal as contrast ratio measurement signal.
Measure black brightness degree Lb of PDP central
Calculate the following numerical formula .
Contrast ratio = Lw / Lb
If it does not use Prior measurement, use generally simple test measurement.
The Correct measure specification is followed by IEC61988-2/CD, JAPAN EIAJ-2710

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5. Component Video Input (Y, PB, PR)
No Specification Proposed
Resolution H-freq(kHz) V-freq(Hz)
1. 720*480 15.73 60 SDTV ,DVD 480I
2. 720*480 15.73 59.94 SDTV ,DVD 480I
3. 720*480 31.47 60 SDTV 480P
4. 720*480 31.47 59.94 SDTV 480P
5. 1280*720 45.00 60.00 HDTV 720P
6. 1280*720 44.96 59.94 HDTV 720P
7. 1920*1080 33.75 60.00 HDTV 1080I
8. 1920*1080 33.72 59.94 HDTV 1080I
9. 1920*1080 27 24 HDTV 1080P
10. 1920*1080 33.75 30 HDTV 1080P
No Specification Proposed
Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz)
PC DDC
1. 640*350 31.468 70.09 25.17 EGA O
2. 720*400 31.469 70.08 28.32 DOS O
3. 640*480 31.469 59.94 25.17 VESA(VGA) O
4. 640*480 37.861 72.80 31.50 VESA(VGA) O
5. 640*480 37.500 75.00 31.50 VESA(VGA) O
6. 800*600 35.156 56.25 36.00 VESA(SVGA) O
7. 800*600 37.879 60.31 40.00 VESA(SVGA) O
8. 800*600 48.077 72.18 50.00 VESA(SVGA) O
9. 800*600 46.875 75.00 49.50 VESA(SVGA) O
10. 1024*768 48.363 60.00 65.00 VESA(XGA) O
11. 1024*768 56.476 70.06 75.00 VESA(XGA) O
12. 1024*768 60.023 75.02 78.75 VESA(XGA) O
13. 1280*768 47.776 59.870 79.5 CVT(WXGA) X
47.78 59.87 79.5
14. 1360*768 47.720 59.799 84.750 CVT(WXGA) O
47.71 60.02 85.5
DTV
15. 720*480 31.47 60 SDTV 480P
16. 720*480 31.47 59.94 SDTV 480P
17. 1280*720 45.00 60.00 HDTV 720P
18. 1280*720 44.96 59.94 HDTV 720P
19. 1920*1080 33.75 60.00 HDTV 1080I
20. 1920*1080 33.72 59.94 HDTV 1080I
21. 1920*1080 27 24 HDTV 1080P
22. 1920*1080 33.75 30 HDTV 1080P
6. RGB Iinput (PC/DTV)

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7. HDMI Input (PC/DTV)
8. Mechanism spec
No Specification Proposed
Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz)
PC DDC
1. 640*480 31.469 59.94 25.17 VESA(VGA) O
2. 640*480 37.861 72.80 31.50 VESA(VGA) O
3. 640*480 37.500 75.00 31.50 VESA(VGA) O
4. 800*600 35.156 56.25 36.00 VESA(SVGA) O
5. 800*600 37.879 60.31 40.00 VESA(SVGA) O
6. 800*600 48.077 72.18 50.00 VESA(SVGA) O
7. 800*600 46.875 75.00 49.50 VESA(SVGA) O
8. 1024*768 48.363 60.00 65.00 VESA(XGA) O
9. 1024*768 56.476 70.06 75.00 VESA(XGA) O
10. 1024*768 60.023 75.02 78.75 VESA(XGA) O
11. 1280*768 47.776 59.870 79.5 CVT(WXGA) X
47.78 59.87 79.5
12. 1360*768 47.720 59.799 84.750 CVT(WXGA) O
47.71 60.02 85.5
DTV
13. 720*480 31.47 60 SDTV 480P
14. 720*480 31.47 59.94 SDTV 480P
15. 1280*720 45.00 60.00 HDTV 720P
16. 1280*720 44.96 59.94 HDTV 720P
17. 1920*1080 33.75 60.00 HDTV 1080I
18. 1920*1080 33.72 59.94 HDTV 1080I
19. 1920*1080 27 24 HDTV 1080P
20. 1920*1080 33.75 30 HDTV 1080P
No Item Content Remark
1. ProductDimension Width Length Height Unit
Before Packing 1280 315 828(719) mm
After Packing 1386 411 966 mm
2. ProductWeight Only SET 56.5 Kg
With BOX 62.7 Kg
3. Container Individual or 20ft 40ft
Loading Quantity Palletizing Indi Wooden Indi Wooden
44 44 90 88
4. Stand Assy Type Attached ( detachable )
Size(W x D x H) 722 315 231 Mm
Tilt Degree -
Tilt force -
Swivel Degree +30°(±1) / -30°(±1)
Swivel Force 2.0 ~ 2.3 kgf
5. Appearance General Refer to Standard of LG(55)G1-1020

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ADJUSTMENT INSTRUCTION
1. Application Object
These instructions are applied to all of the LCD TV, LA61B.
2. Notes
(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 110V, 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 3. White Pattern status of Ez-Adjust)
White Pattern entry method
A) Enter into Ez-Adjust by pressing the POWER ON KEY
on the adjustment R/C.
B) 100% FULL WHITE PATTERN appears if pressing the
OK ( ) key after selecting the 3.WHITE PATTERN
with the CH + / - KEY.
* It is possible to HEAT RUN the set without a
separate signal generator in this mode.
Caution : Care must be taken as afterimage
phenomena may occur about the black level part
of screen If leaving pause image turned on for
more than 20 minutes (especially inner digital
pattern (13 CH), Cross Hatch Pattern (09CH)
with significant black/white contrast).
3. EPLD Download
(1) Test Equipment: PC, Jig for download
(2) Connect the power of VSC B/D.
(3) Execute download program(iMPACK) of PC.
(4) After executing the hot key on the Programmer, click icon
(5) End after confirming
4. Gemstar VBI Micom Download
4-1. Preparation for Adjustment
(1) As shown below, connect the MPLAB ICD2 equipment, PC
and Digital Connector.
(2) Turn on the MPLAB ICD2 POWER Supply.
(3) After turn on the PC and MONITOR, select the ‘MPLAB
IDE’ from the screen.
4-2. Adjustment Sequence
(1) When the program is executed, select the MPLAB ICD2
from Programmer -> Select Programmer .
(2) Select "Configure -> Select Device".
(3) When the "Select Device" window appears, select the
PIC18F1220 from "Device" and press OK.
PC VSC
B/D
+13V
<Digital Board>
Connect the MPLAB ICD2 and connector of Digital Board
Connect the RS-232 or USB Cable
GND
Data

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(4) Select "Programmer -> Connect".
When connected with the Micom, the display message on
the Output window appears as below.
(5) Select "File -> Import", select the Work HEX file and open.
(6) Select "Programmer -> Program".
(7) Download is executed and about 5 seconds later, the
"Programming succeeded" message is displayed on the
Output window and the Download process is ended.
(8) The execution of process (6) is convenient when using the
short-cut icon.
5. POD Certificate Download
5-1. Preparation for Adjustment
(1) Connect the MEMORY JIG and PC.
(2) Turn on the JIG MAIN POWER SWITCH.
(3) After turn on the PC and MONITOR, execute the
‘Certificate Downloader v1.4’ from the screen.
5-2. Adjustment Sequence
(1) After open the ‘Certificate Downloader v1.4’, enter
Connection set and set the as same below.
The port settings are determined by each PC's setup.
(2) Select ‘Connection’and SET connected to RS-232C.
(3) After clicking "Enter", confirm that "Enter Password:"
appears.
(4) Click the "OpenFile -> Download" button from CP Data
Download, select the ‘Private Key’appears and click
ENTER.

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(5) After clicking ENTER, the ‘opens Private key' window
appears and select the Private key applied to the SET.
The Private Key file name is on the Label of the Digital
Board.
(6) When the Dialog window appears, click OK and the write
work will begin.
(7) When completed, click ‘CP Data Download: OK’
* When ‘CP Data Download: OK’does not appear, certificate
has not Download correctly.
SET is rebooted and certificate Download work must be
repeated.
6. Gemstar Operation Confirmation
6-1. Required Test Equipment
(1) PC with Factory Test Program
(2) VBI Inserter (Norpak TES3) - Guide Data Discharge
Equipment
[In case of without the VBI Inserter(TES3), a VCR may be
used.]
6-2. Preparation for Adjustments
(1) In case of with VBI Inserter(TES3): Signal uses Cable input
and set as below.
(2) In case of without VBI Inserter(TES3): VCR uses Cable
input and set as below.
6-3. Adjustment Confirmation Work
(1) Turn on the TV and run Factory Test Program of PC.
[ Program only needs to run once, regardless of set quantity.
(2) Enter the EZ adjust menu by pressing Adjust on the
Service Remote Control (S R/C).
(3) Go to number 1 Gemstar and press Enter.
(4) TV set screen will appear as shown.
(5) Confrim that VBI Test and Serial Test PASS from the
screen.
Input Signal
RS-232C
RS-232C
TV
PC with Test
Program
VCR
RF Ch 4.Ouput Cable Input
G - LINK - To -
PC Card

7. Cable Operation Confirmation
(1) Confirm that the Cable Card is inserted in the slot.
(2) Enter the EZ adjust menu by pressing the Adjust key on
the Service Remote Control .
(3) Go to number 2 Cable Check and press the Right key (G) .
(4) Confirm items below.
8. POWER PCB Assy Voltage
Adjustment
9. EDID(The Extended Display
Identification Data)/DDC
(Display Data Channel) Download
This is the function that enables “Plug and Play".
9-1. HDMI EDID Data Input
(1) Required Test Equipment
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
(2) Preparation for Adjustments &
Setting of Device
1) Set devices as below and turn on the PC and JIG.
2) Open S/W for writing DDC (EDID data write & read).
(operated in DOS mode)
9-2. EDID Data for LA61B
EDID for HDMI-1 (DDC (Display Data Channel) Data)\
EDID table
EDID for HDMI-2 (DDC (Display Data Channel) Data)\
EDID table
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Name
Descrambler
Check
CableCARD
OOB Path
FDC_SNR
Video Signal
Normal
OK
CableCARDTM
is inserted.
OK(Lock)
OK(20dB above)
Normal Screen
Defective
Not OK
CableCARDTM
is removed.
Not OK(Unlock)
Not OK(20dB under)
Black Screen
(No Picture)
Each PCB Assy must be checked by Check JIG Set before
assembly. (Especially, be careful Power PCB Assy which can
cause Damage to the PDP Module.)
PDP TV SET
(or Digital Board)
0123456789ABCDEF
0 00FFFFFFFFFFFF001E6D5E9C01010101
10 00 10 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23
20 09 48 4C 2F CE 00 31 40 45 40 61 40 01 01 01 01
30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 C4 8E 21 00 00 1E 0E 1F 00 80 51 00 1E 30
50 40 80 37 00 C4 8E 21 00 00 1C 00 00 00 FD 00 38
60 4B 1F 3C 09 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 34 37 4C 42 31 44 41 2D 55 42 0A 20 20 01 2A
0123456789ABCDEF
0 020316F1478405030220221023150750
10 65 03 0C 00 10 00 01 1D 00 72 51 D0 1E 20 6E 28
20 55 00 C4 8E 21 00 00 1E 01 1D 80 18 71 1C 16 20
30 58 2C 25 00 C4 8E 21 00 00 9E 8C 0A D0 8A 20 E0
40 2D 10 10 3E 96 00 C4 8E 21 00 00 18 8C 0A D0 8A
50 20 E0 2D 10 10 3E 96 00 13 8E 21 00 00 18 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 95
0123456789ABCDEF
0 00FFFFFFFFFFFF001E6D5E9C01010101
10 00 10 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23
20 09 48 4C 2F CE 00 31 40 45 40 61 40 01 01 01 01
30 01 01 01 01 01 01 01 1D 00 72 51 D0 1E 20 6E 28
40 55 00 C4 8E 21 00 00 1E 01 1D 80 18 71 1C 16 20
50 58 2C 25 00 C4 8E 21 00 00 9E 00 00 00 FC 00 34
60 37 4C 42 31 44 41 2D 55 42 0A 20 20 00 00 00 FD
70 00 38 4B 1F 3C 09 00 0A 20 20 20 20 20 20 01 F8
0123456789ABCDEF
0 020316F1478405030220221023150750
10 65 03 0C 00 20 00 8C 0A D0 8A 20 E0 20 10 10 3E
20 96 00 C4 8E 21 00 00 18 8C 0A D0 8A 20 E0 2D 10
30 10 3E 96 00 13 8E 21 00 00 18 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 23

EDID for RGB
10. ADC-Set Adjustment
10-1. Synopsis
ADC-Set adjustment to set the black level and the Gain to
optimum.
10-2. Test Equipment
Service R/C, 801GF(802B, 802F, 802R) or MSPG925FA
Pattern Generator
(720P The Horizontal 100% Color Bar Pattern output will be
possible and the output level will accurately have to be
revised with 0.7±0.1Vp-p)
10-3. Adjustment
(1) ADC 480i Component1 Adjustment
Check the connection Component1 to the Test Equipment
(MSPG-925FA : -> model : 209, pattern : 65)
(1) Select Component1 as the input with 100% Horizontal
Color Bar Pattern(HozTV31Bar) in 480i Mode and
select ‘Normal’ in screen.
(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 ‘4. ADC 480i Comp1’.
Pressing the Enter Key to adjust with automatic
movement.
(3) When the adjustment is over, 'ADC Component1
Success’is displayed.
(4) If the adjustment has errors, 'ADC Configuration Error’
is displayed. And error massage(‘Component Not
Connection’or ‘Change Format to 480i’or ‘Check
Pattern of device’) is displayed for 1 second.
(2) ADC 1080i Component2/RGB Adjustment
Check the connection Component2, RGB to the Test
Equipment
(MSPG-925FA : -> model : 223, pattern : 65)
(1) Select Component1 as the input with 100% Horizontal
Color Bar Pattern(HozTV31Bar) in 1080i Mode and
select ‘Normal’in screen.
(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 ‘5. ADC 1080i Comp1/RGB’.
Pressing the Enter Key to adjust with automatic
movement.
(3) When the adjustment is over, 'ADC Component1
Success’is displayed. If the adjustment has errors,
'ADC Configuration Error’is displayed.
(4) After the Component1 adjustment is over, convert the
RGB-DTV Mode and display Pattern.
When the adjustment is over, 'ADC RGB_DTV Success’
is displayed.
(5) Readjust after confirming the case Pattern or
adjustment condition where the adjustment errors.
(6) After adjustment is complete, exit the adjustment mode
by pressing the ADJ KEY.
11. Adjustment of White Balance
11-1. Connection Diagram of Equipment
for Measuring (Automatic Adjustment)
[RS-232C Command] (Automatic Adjustment)
- 14 -
Full White Pattern LCD MONITOR
COLOR
ANALYZER
TYPE; CA-210
<Fig. 4> Connection Diagram of Automatic Adjustment
R Gain
G Gain
B Gain
R Cut
G Cut
B Cut
Jg
Jh
Ji
Cool
Ja
Jb
Jc
Mid
RS-232C COMMAND
[CMD ID DATA]
CENTER
(DEFAULT)
Jd
Je
Jf
00
00
00
192
192
192
127
127
127
Warm
Min Max
184
187
192
64
64
64
Cool
195
183
161
64
64
64
Mid
192
159
95
64
64
64
Warm
<Fig. 3> Adjustment Pattern : 480i/1080i 60Hz HozTV31
Bar Pattern
0123456789ABCDEF
0 00FFFFFFFFFFFF001E6D5D9C01010101
10 00 10 01 03 18 73 41 96 0A CF 74 A3 57 4C B0 23
20 09 48 4C AF CE 00 01 01 01 01 01 01 01 01 01 01
30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 C4 8E 21 00 00 1E 0E 1F 00 80 51 00 1E 30
50 40 80 37 00 C4 8E 21 00 00 1C 00 00 00 FD 00 38
60 4B 1F 3C 09 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 34 37 4C 42 31 44 41 2D 55 42 0A 20 20 00 A5

11-2. Adjustment of White Balance
O Operate the Zero-calibration of the CA-210, then attach
sensor to LCD module surface when you adjust.
O Manual adjustment is also possible by the following sequence.
(1) HEAT RUN at least 30 minutes by pressing the Power
only Key on the Service Remote Control and adjust.
(2) After attaching sensor to center of screen, select ‘White-
Balance’of ‘Ez - Adjust’by pressing the ADJ KEY on the
Service R/C. Then enter adjustment mode by pressing the
Right KEY (
G ). This time white pattern is displayed.
(3) Cool
R Gain 192, R-Cut/G-Cut/B-Gut 64
Hight Light G Gain/B Gain
Medium
R Gain 192, R-Cut/G-Cut/B-Gut 64
Hight Light G Gain/B Gain
Warm
R Gain 192, R-Cut/G-Cut/B-Gut 64
Hight Light G Gain/B Gain
High Level: 216gray
(4) Adjust using Volume +/- KEY.
(5) After adjustment is complete, exit the adjustment mode by
pressing the ADJ KEY.
12. Video(uPD)-Set
Adjustment for reduce color difference Main/Sub screen of RF
or Video signal.
12-1. Adjustment
(1) Connection the Video Signal Generator(Master) to the TV
AV Input terminal.
After input pattern(Model: 201(NTSC-M), Pattern: 33(100%
color Bar), pressing the ‘Rev’button and appear as below
figure
(2) After receive signal, confirm the signal receiving.
And Enter the ‘EZ-ADJUST’by pressing the ADJ Key on
the Service R/C.
Select ‘5. Video(UPD)-Set’and enter the adjustment mode
by pressing the right key (
G ).
(3) When enter the adjustment mode, displayed the TV 2CH
SPLIT Screen automatic at picture and appear as below
figure.
(4) When the automatic adjustment is over, 'RF Configuration
Success’is displayed. If the adjustment has errors, 'Video
Configuration Error’is displayed.
(5) After the RF signal automatic adjustment is over, convert
the Video Mode as below figure and adjust with automatic
movement the Video Mode.
When the automatic adjustment is over, 'Video
Configuration Success’is displayed. If the adjustment has
errors, 'Video Configuration Error’is displayed
- 15 -
<Model : 201(NTSC-M), Pattern : 33(100% color Bar)>

- 16 -
SVC REMOCON
1 POWER
2 POWER ON
3 MUTE
4 P-CHECK
5 S-CHECK
6 ARC
7 CAPTION
8 TXT
9 TV/AV
10 TURBO SOUND
11 TURBO PICTURE
12 IN-START
13 ADJ
14 MPX
15 EXIT
16 APC(PSM)
17 ASC(SSM)
18 MULTIMIDIA
19 FRONT-AV
20 CH
21 VOL
22 ENTER
23 PIP CH-(OP1)
24 PIP CH+(OP2)
25 PIP SWAP(OP3)
26 PIP INPUT(OP4)
27 EYE
28 MENU
29 IN-STOP
30 STILL
31 TIME
32 SIZE
33 MULTI PIP
34 POSITION
35 MODE
36 PIP
37 TILT
38 0~9
To turn the TV on or off
To turn the TV on automatically if the power is supplied to the TV. (Use the
POWER key to deactivate): It should be deactivated when delivered.
To activate the mute function.
To check TV screen image easily.
To check TV screen sound easily
To select size of the main screen (Normal, Spectacle, Wide or Zoom)
Switch to closed caption broadcasting
To toggle on/off the teletext mode
To select an external input for the TV screen
To start turbo sound
To start turbo picture
To enter adjustment mode when manufacturing the TV sets.
To adjust the screen voltage (automatic):
In-start mute Adjust AV(Enter into W/B adjustment mode)
W/B adjustment (automatic):
After adjusting the screen W/B adjustment Exit two times (Adjustment completed)
To enter into the adjustment mode. To adjust horizontal line and sub-brightness.
To select the multiple sound mode (Mono, Stereo or Foreign language)
To release the adjustment mode
To easily adjust the screen according to surrounding brightness
To easily adjust sound according to the program type
To check component input
To check the front AV
To move channel up/down or to select a function displayed on the screen.
To adjust the volume or accurately control a specific function.
To set a specific function or complete setting.
To move the channel down in the PIP screen.
To use as a red key in the teletext mode
To move the channel in the PIP screen
To use as a green key in the teletext mode
To switch between the main and sub screens
To use as a yellow key in the teletext mode
To select the input status in the PIP screen
To use as a blue key in the teletext mode
To set a function that will automatically adjust screen status to match
the surrounding brightness so natural color can be displayed.
To select the functions such as video, voice, function or channel.
To set the delivery condition status after manufacturing the TV set.
To halt the main screen in the normal mode, or the sub screen at the PIP screen.
Used as a hold key in the teletext mode (Page updating is stopped.)
Displays the teletext time in the normal mode
Enables to select the sub code in the teletext mode
Used as the size key in the PIP screen in the normal mode
Used as the size key in the teletext mode
Used as the index key in the teletext mode (Top index will be
displayed if it is the top text.)
To select the position of the PIP screen in the normal mode
Used as the update key in the teletext mode (Text will be
displayed if the current page is updated.)
Used as Mode in the teletext mode
To select the simultaneous screen
To adjust screen tilt
To manually select the channel.
Shortcut keys
Shortcut keys
Shortcut keys
Use the AV
key to enter
the screen
W/B
adjustment
mode.
Shortcut keys
Shortcut keys
Shortcut keys

- 17 -
VIDEO TROUBLESHOOTING & BLOCK DIAGRAM

- 18 -

- 19 -

- 20 -