LG 32LX4DC-UB User manual

LCD TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : LA53A
MODEL : 32LX4DC-UB/32LX4DCS-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................................................................11
TROUBLE SHOOTING............................................................................14
BLOCK DIAGRAM...................................................................................17
EXPLODED VIEW .................................................................................. 18
EXPLODED VIEW PARTS LIST..............................................................19
REPLACEMENT PARTS LIST ............................................................... 20
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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1. Application range
This specification is applied to LA53A chassis.
2. Requirement for Test
Testing for standard of each part must be followed in below
condition.
(1) Temperature: 20°C ± 5°C (CST 40°C ± 5°C)
(2) Humidity: 65% ± 10%
(3) Power: Standard input voltage (AC 100-240V, 50/60Hz)
(4) Measurement must be performed after heat-run more than
15min.
(5) Adjusting standard for this chassis is followed a special
standard.
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement
.
3.General Specification
No Item Specification Remark
1. Receiving System ATSC/ 64 & 256 QAM/NTSC-M Slim-VSB
2. Available Channel VHF : 02~13
UHF : 14~69
CATV: 01~135
DTV: 02-69
3. Input Voltage AC 100 ~ 260V 50/60Hz
4. Market North America
5. Screen Size 32 inch wide
6. Aspect Ratio 16:9
7. Tuning System FS
8. LCD Module LC320W01-SL11 (1366x768) LG Philips LCD
9. Operating Environment Temp. : 0 ~ 40 deg
Humidity : ~ 80 %
10. Storage Environment Temp. : -20 ~ 50 deg
Humidity : 10 ~ 90 %
4. Feature and Function
No Item Specification Remark
1. Feature AV Input / Out 2 AV Input1,2(Video, Front Video) Rear1, Rear 1
RGB Input 2 Analog RGB 1, 2 Rear2(D-Sub 15pin)
S-Input 2 S-Input Rear1, Front 1
HDMI Input 1 DVI Input Rear1
Y, Pb, Pr Input 2 Component 1, 2 Rear1, Side1
SPDIF Out 1 SPDIF Out Rear
SPDIF Input 1 SPDIF Input Rear
RS-232C 1 S/W Download D-Sub 9pin, Rear
Internal SPK Out 1 Mono, < 2W Rear, for remote speaker
2. Key Local Key POWER, TV/Video, Menu, ENTER, Volume( ,),
Channel ( ,), Power (Main)

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No Item Specification Remark
3. SETUP EZ Scan Auto Channel Search
CH. Edit CH. Add/Delete
DTV Signal Bad/Normal/Good DTV Only
Ch. Label Broadcaster. Logo
Main Input Antenna, Cable, Video, Front Video, Component, RGB-DTV <-> RGB-PC,
RGB-DTV/PC, DVI
Input Label VCR, DVD, VCR/DVD, Set top box, Satellite, Cable box
Game, PC for Video, Component1/2. RGB, DVI
SET ID 1 - 99
4. Picture EZ Picture Custom, Daylight, Normal, Night Time, Movie,
Video Game, Sports
Contrast / Brightness 0 - 100
Color / Sharpness 0 - 100
Color Temperature Warm/Medium/ Cool
Video Preset Factory Preset
5. Audio Audio Language English/Spanish/French DTV Only
EZ SoundRite Off/On
EZ Sound Custom/Normal/Stadium/News/Theater/Music
User Control Balance/Treble/Bass
Front Surround Off/3D EchoSound System/SRS TruSurround XT
TV Speaker Off/On
6. Time Auto Clock Off/On/, Time Zone/Daylight Saving
Manual Clock Year/Data/Time
Off Timer Off/On/Time
On Timer Off/On/Time/Ch./Vol
Sleep Timer Off/10 min/20 min/30 min/60 min/90 min/120 min
/180 min/240 min
Auto Off Off/On
7. Option Aspect Ratio Set By Program/4:3/16:9/Horizon/Zoom1/
Zoom2/Cinema Zoom(1~16)
Caption Off/EZ Mute/On DTV: Horizon disable
Caption text CC1/CC2/CC3/CC4/Text1/Text2/Text3/Text4
Caption Option Style/Size/Font/Text Color/Text Opacity/Bg
Color/Bg Opacity/Edge Type/Edge Color
Language English/Espanol/Francais
Cinema 3:2 mode Off/On
Demo Ez Demo/XD Demo
8. Lock Lock System Off/On
Set Password New/Confirm
Block Ch. Select
Movie Rating G/PG/PG-13/R/NC-17/X
TV Rating-Children Age/Fantasy Violence
TV Rating-General Age/Dialogue/Language/Sex/Violence
Input.Block Video, Front Video, Component1, RGB, DVI
9. Etc. Comb Filter 3D Comb 3D comb for main display,
4H comb for sub display
Remocon LG code

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5. External Input Format
Component Video Input (Y, CB/PB, CR/PR)
RGB Iinput (PC/DTV)
No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed
1. 640x480 15.73 60.00 SDTV ,DVD 480I
2. 704x480 31.47 59.94 SDTV 480P
3. 1280x720 45.00 60.00 HDTV 720P
4. 1280x720 44.96 59.94 HDTV 720P
5. 1920x1080 33.75 60.00 HDTV 1080I
6. 1920x1080 33.72 59.94 HDTV 1080I
No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed
PC DDC
7. 640x350 31.468 70.09 25.17 EGA O
8. 640x480 31.469 59.94 25.17 VESA(VGA) O
9. 640x480 37.861 72.80 31.50 VESA(VGA) O
10. 640x480 37.500 75.00 31.50 VESA(VGA) O
11. 800x600 35.156 56.25 36.00 VESA(SVGA) O
12. 800x600 37.879 60.31 40.00 VESA(SVGA) O
13. 800x600 48.077 72.18 50.00 VESA(SVGA) O
14. 800x600 46.875 75.00 49.50 VESA(SVGA) O
15. 1024x768 48.363 60.00 65.00 VESA(XGA) O
16. 1024x768 56.476 70.06 75.00 VESA(XGA) O
17. 1024x768 60.023 75.02 78.75 VESA(XGA) O
DTV
18. 704x480 31.47 59.94 SDTV 480P
19. 1280x720 45.00 60.00 HDTV 720P
20. 1280x720 44.96 59.94 HDTV 720P
21. 1920x1080 33.75 60.00 HDTV 1080I
22. 1920x1080 33.72 59.94 HDTV 1080I

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DVI Iinput (PC/DTV)
No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed
PC DDC
24. 640x350 31.468 70.09 25.17 EGA O
25. 640x480 31.469 59.94 25.17 VESA(VGA) O
26. 640x480 31.861 72.80 31.50 VESA(VGA) O
28. 640x480 37.500 75.00 31.50 VESA(VGA) O
29 800x600 35.156 56.25 36.00 VESA(SVGA) O
30 800x600 48.077 72.18 50.00 VESA(SVGA) O
31 800x600 46.875 75.00 49.50 VESA(SVGA) O
32. 1024x768 48.363 60.00 65.00 VESA(XGA) O
33. 1024x768 56.476 70.06 75.00 VESA(XGA) O
34. 1024x768 60.023 75.02 78.75 VESA(XGA) O
DTV
35. 704x480 31.47 59.94 SDTV 480P
36. 1280x720 45.00 60.00 HDTV 720P
37. 1280x720 44.96 59.94 HDTV 720P
38. 1920x1080 33.75 60.00 HDTV 1080I
39. 1920x1080 33.72 59.94 HDTV 1080I
6. POWER
No Item Min Typ Max Unit Remark
1. AC Power Operating Voltage 100 240 V
2. DC Voltage, LCD Panel Drive 11.4 12.0 12.6 V
3. DC Voltage, Inverter 22.8 24.0 25.2 V
4. DC Voltage, Sound AMP 18.0 19.0 20.0 V
5. DC Voltage, Stand By 5.6 6.0 6.4 V
6. DC Voltage, Scaler(HD2) 3.1 3.3 3.5 V I/O port supply
7. DC Voltage, Scaler(HD2) 1.6 1.8 1.9 Internal core supply
8. DC Voltage, ADC 3.0 3.3 3.6 V MST3385
DC Voltage, VCD 2.5 V 2.3 2.5 2.7 V
9. DC Voltage, Micom 4.7 5 5.3 V
10. DC Voltage, Tuner 4.75 5.00 5.25 V

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7. General Specifications
No Item Min Typ Max Unit Remark
1 Active Screen Size 750.62(diagonal) mm 29.53 inches
2 Outline Dimension 697.3(H)x431.8(V)x50.9(D) mm
3 Pixel Pitch 0.5025x0.1675xRGB
4 Pixel Format 1280(H)x768(V) stripe arrangement
5 Color Depth 8bit 16.7 Mbit
6 Luminance ,White 500 (center 1 point typ) cd/m2
7 Viewing Angle (CR>10) R/L 176(Typ),U/P 176(Typ) degree
8 Power Consumption 99.16 Watt
9 Weight 6.75 kg
10 Display Operating Mode Transmissive mode ,normally black
11 Surface Treatment Hard coating (3H)
12 Altitude Operating 0 - 14,000 feet 4,267.2 m
Storage/Shipment 0 - 40,000 feet 12,192.0 m
8. Electro Optical Characteristic Specifications
No Item Min Typ Max Unit Remark
1 Contrast Ratio 600 800 C It measured at center point
2 Surface Luminance, White 400 500 Cd/m2Full white
3 Luminance Variation 1.3
4 Response Time Tr (Rising time) 16 30 msec
5 Color coordinate RED X 0.632 Full Pattern
Y 0.342
GREEN X Typ 0.275 Typ
Y -0.03 0.288 +0.03
BLUE X 0.147
Y 0.065
WHITE X 0.287
Y 0.289
6 Viewing Angle X axis right( =0) 85 88 degree
(CR>10) X axis left( =180) 85 88
Yaxis up ( =90) 85 88
Z axis down( =270) 85 88
9. Mechanical specification
No Item Content Remark
1Product Width (W) Length (D) Height (H)
Dimension 874 109 538
874 186 580.5 With Stand
2 Product Weight 52.2Kg With Stand

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1. Application Object
These instructions are applied to all of the LCD TV, LA53A.
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)
Never press IN-STOP key before shipment.
White Pattern entry method
A) Enter into Ez-Adjust by pressing the ADJ 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. ADC-Set Adjustment
4-1. Synopsis
The menu of MST3385A-set let optimum black level and Gain
automatically set up during changing from Analog mode to
Digital mode and also correct RGB variation.
4-2. Test Equipment
Service R/C, MSPG925FA Pattern Generator
(720P,480i 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)
4-3. Adjustment
(1) ADC MST3385A-720P Adjustment
(A) Impress Resolution 720P mode(Model,217) and
Pattern 100% Horizontal Color Bar(HozTV31Bar) which
follows in the MSPG-925D and then convert to
Component mode in input-mode.
(B) 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. MST3385A-720P SET’.
Pressing the Enter Key to adjust with automatic
movement.
(C) When the adjustment is over, 'ADC Component 720P
Success’ is displayed.
(D) 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 MST3385A-480i Adjustment
(A) Impress Resolution 480i mode(Model,217) and Pattern
100% Horizontal Color Bar(HozTV31Bar) which follows
in the MSPG-925D and then convert to Component
mode in input-mode.
(B) 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 ‘3. MST3385A-480I Success’.
Pressing the Enter Key to adjust with automatic
movement.
(C) When the adjustment is over, 'MST3385 Component
Success’ is displayed. If the adjustment has errors,
'MST3385A Configuration Error’ is displayed.
ADJUSTMENT INSTRUCTION
PC VSC
B/D
(720P/60Hz : Format No.217, Pattern No. 65)
(480i/60Hz : Format No.209, Pattern No. 65)

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(D) Readjust after confirming the case Pattern or
adjustment condition where the adjustment errors.
(E) After adjustment is complete, exit the adjustment mode
by pressing the ADJ KEY.
5. Video(uPD)-Set
Adjustment for reduce color difference Main/Sub screen of RF
or Video signal.
5-1. 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
6. EDID(The Extended Display
Identification Data)/DDC
(Display Data Channel) Download
This is the function that enables “Plug and Play".
- RGB
- DVI(128Byte)
- DVI(256Byte)
<Model : 201(NTSC-M), Pattern : 33(100% color Bar)>

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SVC REMOCON
NO KEY FUNTION REAMARK
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

- 14 -
TROUBLESHOOTING
No power
Connector connection
Replace Power_board
Replace Power_boardPower On key
OK
Power supply Check
connector connection status.
Stand voltage check:
D-board P100+5V-STDBY
Stand voltage check:
A-board P502 #5Pin 5V
Check 15V or 5V
of Lips
Connection
of power supply part :
Check wiring status of the 13-pin
connector
Connection
of power supply part :
Check wiring status of the 15-pin
connector
Power on signal level :
D-board P101 'power0' 3.3V
D_board main voltage:
P100 '+3.3V', '+6V-P',
'12V-P', '+30V-P'
Fail
Fail
Fail
Fail Fail
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Replace Power_board
Replace D_board
MICOM IC101

- 15 -
No Raster
Replace Power board
Stand by voltage :
D_board P100 +12V-P Check No Power (Go to Power)
Fail
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Replace Q202/Q200
Replace D_board
Stand by voltage :
D_board Q202
#5, #6, #7, #8 12V
D_Board P202
LVDS Signal Exist?
Check No Power
(Go to Power)
Fail
Fail
Fail
Fail
Replace D_board
Replace A_board
A_board P502 #13
15V Check No Power (Go to Power)
Check
Module T-con voltage:
D-board P202 #2, #3, #4pin
12V? Replace LCD Module

- 16 -
No Sound
Replace Connector
Replace Power Board
Replace A_Board
Replace Speaker
Check Sound supply:
A_board P502 #1, #2 18V Power board 15Pin
Connector
check
Fail
Fail
Fail
Pass
Pass
Pass
Speaker output check :
Is there waveform of P600/P601 #1?

BLOCK DIAGRAM(LCD Built-In)
- 17 -

- 18 -
EXPLODED VIEW
010
150 160
040
170
180
020 060 071
070
080
090 100
110
120 130
030
140 050

- 19 -
EXPLODED VIEW PARTS LIST
No. PART NO. DESCRIPTION
3091TKE034X Cover Assembly, 32LX4DC-UB LA53A 32" CABINET LGDMX PHANTOM FOR LOCAL ASS'Y
3091TKE034W Cover Assembly, 32LX4DCS-UB LA53A 32" CABINET LGEMX PHANTOM FOR LOCAL ASS'Y
EAJ32763001
LCD,Module-TFT, LC320W01-SL18 WXGA 32INCH 1366X768 500CD COLOR 72% 16/9 800:1 A-TW Pol. P6 LG PHILIPS LCD
or EAJ30768801
LCD Module, LC320W01-SL14 WXGA 32.0INCH 1366X768 500CD COLOR 72% 16/9 800 NEC Lamp LG PHILIPS LCD .
or 6304FLP359A LCD,Module-TFT, LC320W01-SL11 DRIVER 32INCH 1366X768 500CD COLOR 72% 16/9 800:1 - LG PHILIPS LCD
3809900197M Cover Assembly, 32LX4DC/S-UA/UB COMMERCIAL 32" BACK COVER LGEMX PHANTOM FOR LOCAL ASS'Y
3043TKK252R Base Assembly, STAND 32LX4DC-UA/UB LA53A BK LGEMX PHANTOM
3043TKK252S
Base Assembly, STAND 32LX4DCS-UA/UB LA53A SILVER LGEMX PHANTOM(LOCAL ASS'Y)
3550TKK938F Cover, MOLD HIPS 51SF 32LX3DC/32LX4DC HIPS 51SF No Spray Set
4951TKS222S Plate Assembly, ASSY 32LX4DC/S-UB MAIN FRAME LGEMX PHANTOM FOR LOCAL ASS'Y
4950TKA210C Plate, PRESS SBHG T1.6 SIDE BRACKET LEFT 32LX1D LPL SL01/05 MODULE
4950TKA210D Plate, PRESS SBHG T1.6 SIDE BRACKET RIGHT 32LX1D LPL SL01/05 MODULE
6871TPT303B PCB Assembly,Power, POWER T.T DU(DCR) COMM - SH(D112) DU/DN/DI-32LP10 BRAND -
EBU30789901 Main Total Assembly, 32LX4DC-UA BRAND LA53A - DIGITAL
EBR30801401 PCB Assembly, SUB T.T LA53A 32LX4DC-UA ALUSLFX 32LX4DC-UA -SIDE A/V
4951TKK238R
Plate Assembly, ASSY 32LX3DC/4DC COMMERCIAL METAL REAR ASSY LGEMX PHANTOM
4815TKK046F Plate Assembly, REAR SHIELD ASSY 32LX3DC CSKD
3551TKK589Z
Cover Assembly, 32LX4DC/S-UA/UB LA53A 32" AV BRACKET LGEMX PHANTOM FOR LOCAL ASS'Y
3141TZZ172A Chassis Assembly, CONTROL BOX, 32LP1DC-U, LST-4100A, COMMERCIAL,KIMIN
EBR30800701 PCB Assembly, SUB T.T LA53A 32LX4DC-UA ALUSLFX 32LX4DC-UA - CONTROL
EBR30800102 PCB Assembly,Front, SUB T.T LA53A 32LX4DC-UA ALUSLFX 32LX4DC-UA - LED
EAB30827201
Speaker,Fullrange, C112K01K1450. FERRITE 15W 8OHM 83.5DB 170HZ 116 X 42 X 38.5 LUG
33139D3078A Main Total Assembly, 32LP2DC-UA BRAND LA53A..- ANALOG
010
020
030
040
050
060
070
071
080
090
100
110
120
130
140
150
160
170
180

- 20 -
DATE: 2006. 11. 20.
*S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION
C101 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C102 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C103 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C105 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C203 0CE476VF6DC VGV476M016S0ANE010 47uF 20%
C205 0CE226VF6DC VGV226M016S0ANC010 22uF 20%
C206 0CE226VF6DC VGV226M016S0ANC010 22uF 20%
C210 0CE105SK6DC VMV105M050S0ANB010 1uF 20%
C212 0CE105SK6DC VMV105M050S0ANB010 1uF 20%
C214 0CE477WF6DC MVK10TP16VC470M 470uF 20% 1
C221 0CE105SK6DC VMV105M050S0ANB010 1uF 20%
C222 0CE105SK6DC VMV105M050S0ANB010 1uF 20%
C303 0CE476VF6DC VGV476M016S0ANE010 47uF 20%
C307 0CE107VF6DC MV6.3TP16VC100M 100uF 20% 1
C321 0CE476VF6DC VGV476M016S0ANE010 47uF 20%
C325 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C327 0CE476VF6DC VGV476M016S0ANE010 47uF 20%
C338 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C341 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C342 0CE476VF6DC VGV476M016S0ANE010 47uF 20%
C344 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C347 0CE476VF6DC VGV476M016S0ANE010 47uF 20%
C348 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C349 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C350 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C351 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C353 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C354 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C355 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C356 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C502 0CE476VF6DC VGV476M016S0ANE010 47uF 20%
C507 0CE476VF6DC VGV476M016S0ANE010 47uF 20%
C510 0CE107VF6DC MV6.3TP16VC100M 100uF 20% 1
C519 0CE335SK6DC VMV335M050S0ANB010 3.3uF 20
C523 0CE226VF6DC VGV226M016S0ANC010 22uF 20%
C541 0CE335SK6DC VMV335M050S0ANB010 3.3uF 20
C545 0CE107VF6DC MV6.3TP16VC100M 100uF 20% 1
C546 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C547 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C549 0CE476VF6DC VGV476M016S0ANE010 47uF 20%
C551 0CE476VF6DC VGV476M016S0ANE010 47uF 20%
C552 0CE475VK6DC VGV475M050S0ANC010 4.7uF 20
C553 0CE475VK6DC VGV475M050S0ANC010 4.7uF 20
C556 0CE107VF6DC MV6.3TP16VC100M 100uF 20% 1
C557 0CE227SF6DC MVG6.3TP16VC220M 220uF 20%
C616 0CE476VF6DC VGV476M016S0ANE010 47uF 20%
C624 0CE107VF6DC MV6.3TP16VC100M 100uF 20% 1
C652 0CE226VF6DC VGV226M016S0ANC010 22uF 20%
C653 0CE226VF6DC VGV226M016S0ANC010 22uF 20%
C656 0CE476VF6DC VGV476M016S0ANE010 47uF 20%
C658 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C668 0CE226VF6DC VGV226M016S0ANC010 22uF 20%
DATE: 2006. 11. 20.
*S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION
C706 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C708 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C709 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C710 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C713 0CE105SK6DC VMV105M050S0ANB010 1uF 20%
C714 0CE105SK6DC VMV105M050S0ANB010 1uF 20%
C715 0CE105SK6DC VMV105M050S0ANB010 1uF 20%
C716 0CE105SK6DC VMV105M050S0ANB010 1uF 20%
C801 0CE476VF6DC VGV476M016S0ANE010 47uF 20%
C811 0CE476VF6DC VGV476M016S0ANE010 47uF 20%
C900 0CE476VF6DC VGV476M016S0ANE010 47uF 20%
C906 0CE106VF6DC VGV106M016S0ANB010 10uF 20%
C907 0CH8476F691 MVK6.3TP16VC47M 47uF 20% 16
C912 0CE476VF6DC VGV476M016S0ANE010 47uF 20%
C916 0CE476VF6DC VGV476M016S0ANE010 47uF 20%
C917 0CE476VF6DC VGV476M016S0ANE010 47uF 20%
C934 0CH8106J691 MVK5.0TP35VC10M 10uF 20% 35
C568 0CE4772J618 KMF5.0TP35VB470M 470uF 20%
C646 0CE108EJK18 ESM108M035T1G5L20G 1000uF 2
C654 0CE108EJK18 ESM108M035T1G5L20G 1000uF 2
C201 0CH6101K416 C2012C0G1H101JT 100pF 5% 50
C202 0CH6101K416 C2012C0G1H101JT 100pF 5% 50
C207 0CH3103K516 C2012Y5P1H103KT 10nF 10% 50
C216 0CH6101K416 C2012C0G1H101JT 100pF 5% 50
C218 0CH6101K416 C2012C0G1H101JT 100pF 5% 50
C219 0CH2474F566 0805B474K160CT 470nF 10% 16
C223 0CH2474F566 0805B474K160CT 470nF 10% 16
C224 0CH2474F566 0805B474K160CT 470nF 10% 16
C300 0CH6220K416 C2012C0G1H220JT 22pF 5% 50V
C301 0CH6220K416 C2012C0G1H220JT 22pF 5% 50V
C302 0CH6101K416 C2012C0G1H101JT 100pF 5% 50
C304 0CH3104K566 0805B104K500CT 100nF 10% 50
C305 0CH6101K416 C2012C0G1H101JT 100pF 5% 50
C306 0CH3104K566 0805B104K500CT 100nF 10% 50
C312 0CH2474F566 0805B474K160CT 470nF 10% 16
C313 0CH2474F566 0805B474K160CT 470nF 10% 16
C319 0CH3104K566 0805B104K500CT 100nF 10% 50
C323 0CH2474F566 0805B474K160CT 470nF 10% 16
C324 0CH2474F566 0805B474K160CT 470nF 10% 16
C326 0CH3103K516 C2012Y5P1H103KT 10nF 10% 50
C328 0CK105CD56A C1608X7R1A105KT 1uF 10% 10V
C333 0CH3103K516 C2012Y5P1H103KT 10nF 10% 50
C335 0CK472DK56A C2012X7R1H472KT 4.7nF 10% 5
C337 0CH2474F566 0805B474K160CT 470nF 10% 16
C340 0CH3104K566 0805B104K500CT 100nF 10% 50
C352 0CH3104K566 0805B104K500CT 100nF 10% 50
C357 0CH3104K566 0805B104K500CT 100nF 10% 50
C362 0CH2103K516 0805B103K500CT 10nF 10% 50V
C363 0CH2103K516 0805B103K500CT 10nF 10% 50V
C364 0CH2103K516 0805B103K500CT 10nF 10% 50V
C365 0CH2103K516 0805B103K500CT 10nF 10% 50V
C500 0CH3103K516 C2012Y5P1H103KT 10nF 10% 50
C503 0CH2152K516 0805B152K500CT 1.5nF 10% 50
C504 0CH3822K516 C2012Y5P1H822KT 8.2nF 10% 5
REPLACEMENT PARTS LIST
MAIN BOARD(ANALOG)
CAPACITOR
For Capacitor & Resistors, the
charactors at 2nd and 3rd digit in the
P/No. means as follows;
CC, CX, CK, CN, CH : Ceramic
CQ : Polyestor
CE : Electrolytic
CF : Fixed Film
RD : Carbon Film
RS : Metal Oxide Film
RN : Metal Film
RH : CHIP, Metal Glazed(Chip)
RR : Drawing