LG 32LD650 User manual

LCD TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : LJ03B
MODEL : 32LD650 32LD650-SA
North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com
Internal Use Only
Printed in KoreaP/NO : MFL63261811 (1004-REV00)

Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 2 -
CONTENTS
CONTENTS .............................................................................................. 2
PRODUCT SAFETY ................................................................................. 3
SPECIFICATION....................................................................................... 6
ADJUSTMENT INSTRUCTION .............................................................. 12
EXPLODED VIEW .................................................................................. 20
SVC. SHEET ...............................................................................................

Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 3 -
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 Exploded View.
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 1 W), keep the resistor 10 mm 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 1 MΩand 5.2 MΩ.
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 1.5 K / 10 watt resistor in parallel with a 0.15 uF 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
0.5 mA.
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
When 25A is impressed between Earth and 2nd Ground
for 1 second, Resistance must be less than 0.1
*Base on Adjustment standard
IMPORTANT SAFETY NOTICE
0.15 uF
Ω

Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 4 -
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 1.25 cm) 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 circuit
board 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

Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 5 -
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.

Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 6 -
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement .
1. Application range
This specification is applied to the LCD TV used LJ03B/D/E/F chassis.
2. Requirement for Test
Each part is tested as below without special appointment.
1) Temperature
: 25 ºC ± 5 ºC (77 ºF ± 9 ºF), CST : 40 ºC ± 5 ºC
2) Relative Humidity : 65 % ± 10 %
3) Power Voltage
: Standard input voltage (AC 100-240 V~ 50 / 60 Hz)
* Standard Voltage of each products is marked by models.
4) Specification and performance of each parts are followed each drawing and specification by part number in accordance with
BOM.
5) The receiver must be operated for about 20 minutes prior to the adjustment.
3. Test method
1) Performance: LGE TV test method followed
2) Demanded other specification
- Safety: CE, IEC specification
- EMC:CE, IEC

Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes - 7 - LGE Internal Use Only
4. General Specification(TV)
No Item Specification Remark
1 Receivable System 1) SBTVD / NTSC / PAL-M / PAL-N
2 Available Channel VHF : 02 ~ 13
UHF : 14 ~ 69
DTV : 07 ~ 69
CATV : 01 ~ 135
3 Input Voltage 1) AC 100 ~ 240V 50/60Hz
4 Market Central and South AMERICA
5 Screen Size 32 inch Wide (1920 x 1080) 32LE7500,32LD650,32LE5500
42 inch Wide (1920 x 1080)
42LE7500,42LD650,42LE5500,42LE8500
47 inch Wide (1920 x 1080) 47LE7500,47LD650,47LE5500,
55 inch Wide (1920 x 1080) 55LE7500,55LD650
60 inch Wide (1920 x 1080) 60LE5500
6 Aspect Ratio 16:9
7 Tuning System FS
8 LCD Module LC320EUH-SCA4 (Vitiaz 5) 32LE7500-SA
LC420EUH-SCA2 (Vitiaz 5) 42LE7500-SA
LC470EUH-SCA2 (Vitiaz 5) 47LE7500-SA
LC550EUB-SCA2 (Vitiaz 5) 55LE7500-SA
LC320WUH-SCA1(Vitiaz 5) 32LD650-SA
LC420WUH-SCA1(Vitiaz 5) 42LD650-SA
LC470WUH-SCA1(Vitiaz 5) 47LD650-SA
LC550WUB-SCA1(Vitiaz 5) 55LD650-SA
LC320EUH-SCA1(Vitiaz 5) 32LE5500-SA
LC420EUH-SCA1(Vitiaz 5) 42LE5500-SA
LC470EUH-SCA1(Vitiaz 5) 47LE5500-SA
Sharp 60 FHD T240 IOP LED 60LE5500-SA
LC420MUK-SCA1 (Vitiaz 5) 42LE8500-SA
9 Operating Environment Temp : 0 ~ 40 deg
Humidity : ~ 80 %
10 Storage Environment Temp : -20 ~ 60 deg
Humidity : -85 %

5. Chrominance & Luminance Specification
1) LJ03D/E (LE5500,LE7500,42LE8500)
- 8 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
No Item Min Typ Max Unit Remark
1. Max Luminance Module 360 450 cd/m232/42/47/55LE7(5)500
(Center 1-point / Full White Pattern) 450 500 42LE8500
Set 300 450 cd/m232/42/47/55LE7(5)500
400 500 42LE8500
2. Luminance uniformity 77 % Full white
3. Color coordinate RED X Typ. 0.651 Typ. 32LE7(5)500
-0.03 0.647 +0.03 42/55LE7(5)500
0.645 47LE7(5)500
(TBD) (42LE8500)
Y 0.332
0.332
0.333
(TBD)
GREEN X 0.308
0.309
0.310
(TBD)
Y 0.597
0.601
0.593
(TBD)
BLUE X 0.149
0.149
0.152
(TBD)
Y 0.059
0.059
0.057
(TBD)
WHITE X 0.279
(0.280)
Y 0.292
(0.290)
4. Color coordinate uniformity N/A
5. Contrast ratio 900:1 1300:1 32LE7(5)500 NORMAL
1000:1 1400:1
42/47/55, 42LE85
3,000,000:1 5,000,000:1 LE7(5)500 DCR
5,000,000:1 7,000,000:1 42LE8500
6. Color Temperature Cool 0.267 0.269 0.271 <Test Condition>
0.271 0.273 0.275 85% Full white pattern
Standard 0.283 0.285 0.287 ** The W/B Tolerance is
0.291 0.293 0.295 ±0.015 Adjustment
Warm 0.311 0.313 0.315
0.327 0.329 0.331
7. Color Distortion, DG 10.0 %
8. Color Distortion, DP 10.0 deg
9. Color S/N, AM/FM 43.0 dB
10. Color Killer Sensitivity -80 dBm

- 9 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
2) LJ03B (32/42/47/55LD650-SA)
No Item Min Typ Max Unit Remark
1. Max Luminance Module 400 500 cd/m232/42/47/55LD650
(Center 1-point / Full White Pattern) Set 400 500 cd/m232/42/47/55LD650
2. Luminance uniformity 77 % Full white
3. Color coordinate RED X Typ. 0.642 Typ. 32LD650
-0.03 0.636 +0.03 42LD650
0.639 47LD650
(TBD) 55LD650
Y 0.334
0.335
0.334
(TBD)
GREEN X 0.292
0.291
0.290
(TBD)
Y 0.607
0.603
0.606
(TBD)
BLUE X 0.146
0.146
0.146
(TBD)
Y 0.056
0.061
0.058
(TBD)
WHITE X 0.279
Y 0.292
4. Color coordinate uniformity N/A
5. Contrast ratio 1000:1 1400:1 32LD650 NORMAL
1100:1 1500:1 42/55LD650
1200:1 1500:1 47LD650 DCR
50,000:1 70,000:1
6. Color Temperature Cool 0.267 0.269 0.271 <Test Condition>
0.271 0.273 0.275 85% Full white pattern
Standard 0.283 0.285 0.287 ** The W/B Tolerance is
0.291 0.293 0.295 ±0.015 Adjustment
Warm 0.311 0.313 0.315
0.327 0.329 0.331
7. Color Distortion, DG 10.0 %
8. Color Distortion, DP 10.0 deg
9. Color S/N, AM/FM 43.0 dB
10. Color Killer Sensitivity -80 dBm

Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes - 10 - LGE Internal Use Only
6. Component Video Input (Y, CB/PB, CR/PR)
No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed
1. 720*480 15.73 60 13.5135 SDTV ,DVD 480I
2. 720*480 15.73 59.94 13.5 SDTV ,DVD 480I
3. 720*480 31.50 60 27.027 SDTV 480P
4. 720*480 31.47 59.94 27.00 SDTV 480P
5. 720*576 15.625 50* 13.5 SDTV 576I
6. 720*576 31.25 50* 13.5 SDTV 576P
7. 1280*720 37.5 50* 74.25 HDTV 720P
8. 1280*720 45.00 60.00 74.25 HDTV 720P
9. 1280*720 44.96 59.94 74.176 HDTV 720P
10. 1929*1080 28.125 50* 74.25 HDTV 1080I
11. 1920*1080 33.75 60.00 74.25 HDTV 1080I
12. 1920*1080 33.72 59.94 74.176 HDTV 1080I
13. 1920*1080 56.25 50* 148.5 HDTV 1080P
14. 1920*1080 67.50 60 148.50 HDTV 1080P
15. 1920*1080 67.432 59.94 148.352 HDTV 1080P
16. 1920*1080 27.00 24.00 74.25 HDTV 1080P
17. 1920*1080 26.97 23.976 74.176 HDTV 1080P
18. 1920*1080 33.75 30.00 74.25 HDTV 1080P
19. 1920*1080 33.71 29.97 74.176 HDTV 1080P
8. RGB Input (PC)
No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed
PC DDC
1. 640*350 31.468 70.09 25.17 EGA X
2. 720*400 31.469 70.08 28.32 DOS O
3. 640*480 31.469 59.94 25.17 VESA(VGA) O
4 . 800*600 37.879 60.31 40.00 VESA(SVGA) O
5. 1024*768 48.363 60.00 65.00 VESA(XGA) O
6. 1280*768 47.776 59.87 79.50 CVT(WXGA) O
7. 1360*768 47.712 60.015 85.50 VESA(WXGA) O
8. 1280*1024 63.981 60.020 108.00 VESA(SXGA) O
9. 1600*1200 75.00 60.00 162 VESA(UXGA) O
10. 1920*1080 67.50 60 148.5 HDTV 1080P O
• RGB PC Monitor Range Limits
Min Vertical Freq - 56 Hz
Max Vertical Freq - 62 Hz
Min Horiz. Freq - 30 kHz
Max Horiz. Freq - 80 kHz
Pixel Clock - 170 MHz

Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes - 11 - LGE Internal Use Only
9. HDMI input (PC/DTV)
No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed
PC DDC
1. 640*350 31.468 70.09 25.17 EGA X
2. 720*400 31.469 70.08 28.32 DOS O
3. 640*480 31.469 59.94 25.17 VESA(VGA) O
4 . 800*600 37.879 60.31 40.00 VESA(SVGA) O
5. 1024*768 48.363 60.00 65.00 VESA(XGA) O
6. 1280*768 47.776 59.870 79.50 CVT(WXGA) X
7. 1360*768 47.712 60.015 85.50 VESA(WXGA) X
8. 1280*1024 63.981 60.020 108.00 VESA(SXGA) O
9. 1600*1200 75.00 60.00 162 VESA(UXGA) O
10. 1920*1080 67.5 60 148.5 HDTV 1080P O
DTV
1. 720*480 31.50 60 27.027 SDTV 480P
2. 720*480 31.47 59.94 27.00 SDTV 480P
3. 720*576 31.25 50* 13.5 SDTV 576P
4. 1280*720 37.5 50* 74.25 HDTV 720P
5. 1280*720 45.00 60.00 74.25 HDTV 720P
6. 1280*720 44.96 59.94 74.176 HDTV 720P
7. 1929*1080 28.125 50* 74.25 HDTV 1080I
8. 1920*1080 33.75 60.00 74.25 HDTV 1080I
9. 1920*1080 33.72 59.94 74.176 HDTV 1080I
10. 1920*1080 56.25 50* 148.5 HDTV 1080P
11. 1920*1080 67.50 60 148.50 HDTV 1080P
12. 1920*1080 67.432 59.94 148.352 HDTV 1080P
13. 1920*1080 27.00 24.00 74.25 HDTV 1080P
14. 1920*1080 26.97 23.976 74.176 HDTV 1080P
15. 1920*1080 33.75 30.00 74.25 HDTV 1080P
16. 1920*1080 33.71 29.97 74.176 HDTV 1080P
• HDMI Monitor Range Limits
Min Vertical Freq - 56 Hz Max Vertical Freq - 62 Hz
Min Horiz. Freq - 30 kHz Max Horiz. Freq - 80 kHz
Pixel Clock - 170 MHz

Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 12 -
ADJUSTMENT INSTRUCTION
1. Application Range
This specification sheet is applied all of the LJ03D/E LCD TV
models, which produced in manufacture department or similar
LG TV factory
2. Notice
(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 ºC ± 5 ºC of temperature and 65 % ± 10 % of relative
humidity if there is no specific designation.
(4) The input voltage of the receiver must keep AC 100-220
V~ 50 / 60Hz.
(5) Before adjustment, execute Heat-Run for 5 minutes.
AAfter Receive 100% Full white pattern (06CH) then
process Heat-run
(or “8. Test pattern” condition of Ez-Adjust status)
AHow to make set white pattern
1) Press Power ON button of Service Remocon
2) Press ADJ button of Service remocon. Select “8. Test
pattern” and, after select “White” using navigation
button, and then you can see 100% Full White pattern.
* In this status you can maintain Heat-Run useless any
pattern generator
* Notice: if you maintain one picture over 20 minutes
(Especially sharp distinction black with white
pattern – 13Ch, or Cross hatch pattern – 09Ch)
then it can appear image stick near black level.
3. Adjustment Items
3.1. PCB Assembly Adjustment
AMAC Address Download
AAdjust 480i Comp1
AAdjust 1080p Comp1/RGB
• If it is necessary, it can adjustment at Manufacture Line
• You can see set adjustment status at “1. ADJUST
CHECK” of the “In-start menu”
AEDID (The Extended Display Identification Data)/DDC
(Display Data Channel) download
3.2. Set Assembly Adjustment
AColor Temperature (White Balance) Adjustment
AUsing RS-232C
APING Test
ASelection Factory output option
4. PCB Assembly Adjustment
4.1. MAC Address
4.1.1. Equipment & Condition
• Play file: Serial.exe
• MAC Address edit
• Input Start / End MAC address
4.1.2 Download method
4.1.2.1 Communication Prot connection
Connect: PCBA Jig-> RS-232C Port== PC-> RS-232C Port
4.1.2.2 MAC Address Download
• Com 1,2,3,4 and 115200(Baudrate)
• Port connection button click(1)
• Load button click(2) for MAC Address write.
• Start MAC Address write button(3)
• Check the OK Or NG
4.1.3 Equipment & Condition
• Each other connection to LAN Port of IP Hub and Jig
PCBA PC(RS-232C)
RS-232C Port

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4.1.4 LAN inspection solution
•LAN Port connection with PCB
•Network setting at MENU Mode of TV
•Setting automatic IP
•Setting state confirmation
- If automatic setting is finished, you confirm IP and MAC
Address.
4.1.5 LAN Port Inspection (PING Test)
4.1.5.1 Equipment setting
1) Play the LAN Port Test PROGRAM.
2) Input IP set up for an inspection to Test Program.
*IP Number : 12.12.2.2
4.1.6 LAN Port Inspection (PING Test)
1) Play the LAN Port Test Program.
2) connect each other LAN Port Jack.
3) Play Test (F9) button and confirm OK Message.
4) remove LAN CABLE
4.2. Using RS-232C
Adjust 3 items at 3.1 PCB assembly adjustments “adjustment
sequence”one after the order.
AAdjustment protocol
See ADC Adjustment RS232C Protocol_Ver1.0
ANecessary items before Adjustment items
•Pattern Generator : (MSPG-925FA)
•Adjust 480i Comp1 (MSPG-925FA:model :209 , pattern
:65) –Comp1 Mode
•Adjust 1080p Comp1 (MSPG-925FA:model :225 ,
pattern :65) –Comp1 Mode
•Adjust RGB (MSPG-925FA:model :225 , Pattern :65) –
RGB-PC Mode
*If you want more information then see the below
Adjustment method (Factory Adjustment)
AAdjustment sequence
•aa 00 00: Enter the ADC Adjustment mode.
•xb 00 40: Change the mode to Component1 (No actions)
•ad 00 10: Adjust 480i Comp
•ad 00 10: Adjust 1080p Comp
•xb 00 60: Change to RGB-PC mode(No action)
•ad 00 10: Adjust 1080p RGB
•xb 00 90: Endo of Adjustmennt

- 14 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
5 Factory Adjustment
5.1 Manual Adjust Component 480i/1080p
RGB 1080p
ASummary : Adjustment component 480i/1080i and RGB
1080p is Gain and Black level setting at Analog to Digital
converter, and compensate the RGB deviation
AUsing instrument
•Adjustment remocon, 801GF(802B, 802F, 802R) or
MSPG925FA pattern generator (It can output 480i/1080i
horizontal 100% color bar pattern signal, and its output
level must setting 0.7V±0.1V p-p correctly)
<Pic.4 Adjustment pattern : 480i / 1080p 60Hz Pattern >
A You must make it sure its resolution and pattern cause
every instrument can have different setting
A Adjustment method 480i Comp1, Adjust 1080p Comp1/RGB
(Factory adjustment)
•ADC 480i Component1 adjustment
- Check connection of Component1
- MSPG-925FA -> Model: 209, Pattern 65
•Set Component 480i mode and 100% Horizontal Color
Bar Pattern(HozTV31Bar), then set TV set to
Component1 mode and its screen to “NORMAL”
•ADC 1080p Component1 / RGB adjustment
- Check connection both of Component1 and RGB
- MSPG-925FA -> Model: 225, Pattern 65
•Set Component 1080p mode and 100% Horizontal Color
Bar Pattern(HozTV31Bar), then set TV set to
Component1 mode and its screen to “NORMAL”
•After get each the signal, wait more a second and enter
the “IN-START”with press IN-START key of Service
remocon. After then select “7. External ADC”with
navigator button and press “Enter”.
•After Then Press key of Service remocon “Right
Arrow(VOL+)”
•You can see “ADC Component1 Success”
•Component1 1080p, RGB 1080p Adjust is same method.
•Component 1080p Adjustment in Component1 input
mode
•RGB 1080p adjustment in RGB input mode
•If you success RGB 1080p Adjust. You can see “ADC
RGB-DTV Success”
5.2 EDID (The Extended Display
Identification Data) / DDC (Display Data
Channel) Download.
ASummary
•It is established in VESA, for communication between PC
and Monitor without order from user for building user
condition. It helps to make easily use realize “Plug and
Play”function.
•For EDID data write, we use DDC2B protocol.
AAuto Download
•After enter Service Mode by pushing “ADJ”key,
•Enter EDID D/L mode.
•Enter “START”by pushing “OK”key.
=> Caution : - Never connect HDMI & D-sub Cable when
the user downloading .
-Use the proper cables below for EDID
Writing.
§Edid data and Model option download (RS232)

Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
- 15 -
5.2.1 Manual Download
AWrite HDMI EDID data
•Using instruments
-Jig. (PC Serial to D-Sub connection) for PC, DDC
adjustment.
- S/W for DDC recording (EDID data write and read)
- D-sub jack
- Additional HDMI cable connection Jig.
•Preparing and setting.
- Set instruments and Jig. Like pic.5), then turn on PC and
Jig.
- Operate DDC write S/W (EDID write & read)
- It will operate in the DOS mode.
Pic.3) For write EDID data, setting Jig and another instruments.
•EDID data for LJ03B/D/E/R Chassis (Model name = LG TV)
- HDMI-1 EDID table (0x04, 0x5A)
- HDMI-2 EDID table (0x04, 0x4A)
- HDMI-3 EDID table (0x04, 0x3A)
- HDMI-4 EDID table (0x04, 0x2A)
- Analog (RGB) EDID table (0x1D)
See Working Guide if you want more information about EDID
communication.
PC VSC
B/D

- 16 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
5.3 Adjustment Color Temperature (White
balance)
AUsing Instruments
•Color Analyzer: CA-210 (CH 9)
- Using LCD color temperature, Color Analyzer (CA-210)
must use CH 9, which Matrix compensated (White, Red,
Green, Blue compensation) with CS-2100. See the
Coordination bellowed one.
•Auto-adjustment Equipment (It needs when Auto-
adjustment –It is availed communicate with RS-232C :
Baud rate: 115200)
•Video Signal Generator MSPG-925F 720p, 216Gray
(Model: 217, Pattern 78)
AConnection Diagram (Auto Adjustment)
•Using Inner Pattern
•Using HDMI input
<Pic.5 Connection Diagram for Adjustment White balance>
AWhite Balance Adjustment
If you can’t adjust with inner pattern, then you can adjust it
using HDMI pattern. You can select option at “Ez-Adjust
Menu –7. White Balance”there items “NONE, INNER,
HDMI”. It is normally setting at inner basically. If you can’t
adjust using inner pattern you can select HDMI item, and
you can adjust.
In manual Adjust case, if you press ADJ button of service
remocon, and enter “Ez-Adjust Menu –7. White Balance”,
then automatically inner pattern operates. (In case of
“Inner”originally “Test-Pattern. On”will be selected in The
“Test-Pattern. On/Off”.
•Connect all cables and equipments like Pic.5)
•Set Baud Rate of RS-232C to 115200. It may set 115200
orignally.
•Connect RS-232C cable to set
•Connect HDMI cable to set
ARS-232C Command (Commonly apply)
• “wb 00 00”: Start Auto-adjustment of white balance.
• “wb 00 10”: Start Gain Adjustment (Inner pattern)
• “jb 00 c0”:
• …
• “wb 00 1f”: End of Adjustment
* If it needs, offset adjustment (wb 00 20-start, wb 00 2f-
end)
• “wb 00 ff”: End of white balance adjustment (inner pattern
disappear)
CA-100+
COLOR
ANALYZER
TYPE; CA-100+
Full W hitePattern
RS-232C

ONotice) Adjustment Mapping information
•When Color temperature (White balance) Adjustment
(Automatically)
- Press “Power only key”of service remocon and operate
automatically adjustment.
- Set BaudRate to 115200.
•If it needs, then adjustment “Offset”.
AWhite Balance Adjustment (Manual adjustment)
•Test Equipment: CA-210
- Using LCD color temperature, Color Analyzer (CA-210)
must use CH 9, which Matrix compensated (White, Red,
Green, Blue compensation) with CS-2100. See the
Coordination bellowed one.
•Manual adjustment sequence is like bellowed one.
- Turn to “Ez-Adjust”mode with press ADJ button of
service remocon.
- Select “10.Test Pattern”with CH+/- button and press
enter. Then set will go on Heat-run mode. Over 30
minutes set let on Heat-run mode.
- Let CA-210 to zero calibration and must has gap more
10cm from center of LCD module when adjustment.
- Press “ADJ”button of service remocon and select
“7.White-Balance”in “Ez-Adjust”then press “ G”button
of navigation key.
(When press “ G ”button then set will go to full white
mode)
- Adjust at three mode (Cool, Medium, Warm)
- If “cool”mode
Let B-Gain to 192 and R, G, B-Cut to 64 and then
control R, G gain adjustment High Light adjustment.
- If “Medium”and “Warm”mode
Let R-Gain to 192 and R, G, B-Cut to 64 and then
control G, B gain adjustment High Light adjustment.
- All of the three mode
Let R-Gain to 192 and R, G, B-Cut to 64 and then
control G, B gain adjustment High Light adjustment.
- With volume button (+/-) you can adjust.
- After all adjustment finished, with Enter (A key) turn to
Ez-Adjust mode. Then with ADJ button, exit from
adjustment mode
Attachment: White Balance adjustment coordination and
color temperature.
•Using CS-1000 Equipment.
- COOL : T=11000K, ∆uv=0.000, x=0.276 y=0.283
- MEDIUM : T=9300K, ∆uv=0.000, x=0.285 y=0.293
- WARM : T=6500K, ∆uv=0.000, x=0.313 y=0.329
•Using CA-210 Equipment. (9 CH)
- Contrast value: 216 Gray
-White Balance adjustment coordination and color
temperature for Edge(IOP) LED (LJ03D/E)
-White Balance adjustment table for Edge (IOP) LED
(LJ03D/E)
- 17 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes

5.4 EYE-Q function check
1) Turn on TV
2) Press EYE key of Adj. R/C
3) Cover the Eye Q II sensor on the front of the using your
hand and wait for 6 seconds
4) Confirm that R/G/B value is lower than 10 of the “Raw Data
(Sensor data, Back lignt )”. If after 6 seconds, R/G/B value
is not lower than 10, replace Eye Q II sensor
5) Remove your hand from the Eye Q II sensor and wait for 6
seconds
6) Confirm that “ok”pop up.
If change is not seen, replace Eye Q II sensor
5.5 HDCP (High-Bandwidth Digital
Contents Protection) Setting
•No Need.
5.6 Test of RS-232C control.
Press In-Start button of Service Remocon then set the
“4.Baud Rate”to 115200. Then check RS-232C control and
5.7 Selection of Country option.
Selection of country option is allowed only North American
model (Not allowed Korean model). It is selection of Country
about Rating and Time Zone.
•Models: All models which use LJ03X Chassis (See the first
page.)
•Press “In-Start”button of Service Remocon, then enter the
“Option”Menu with “PIP CH-“Button
•Select one of these three (USA, CANADA, MEXICO)
defends on its market using “Vol. +/-“button.
* Caution : Don’t push The INSTOP KEY after completing
the function inspection.
6. GND and ESD Testing
6.1 Prepare GND and ESD Testing.
ACheck the connection between set and power cord
6.2 Operate GND and ESD auto-test.
AFully connected (Between set and power cord) set enter the
Auto-test sequence.
AConnect D-Jack AV jack test equipment.
ATurn on Auto-controller(GWS103-4)
AStart Auto GND test.
AIf its result is NG, then notice with buzzer.
AIf its result is OK, then automatically it turns to ESD Test.
AOperate ESD test
AIf its result is NG, then notice with buzzer.
AIf its result is OK, then process next steps. Notice it with
Good lamp and STOPER Down.Check Items.
ATest Voltage
•GND: 1.5KV/min at 100mA
•Signal: 3KV/min at 100mA
ATest time: just 1 second.
ATest point
•GND test: Test between Power cord GND and Signal
cable metal GND.
•ESD test: Test between Power cord GND and Live and
neutral.
ALeakage current: Set to 0.5mA(rms)
7. Preset Ch information.
In case of POWER ONLY, System color is operated multi
system
In case of IN STOP, System color is operated default system
(PAN-M)
- 18 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes

8. Default Service option.
8.1 ADC-Set.
AR-Gain adjustment Value (default 128)
AG-Gain adjustment Value (default 128)
AB-Gain adjustment Value (default 128)
AR-Offset adjustment Value (default 128)
AG-Offset adjustment Value (default 128)
AB-Offset adjustment Value (default 128)
8.2 White balance. Value.
9.USB DOWNLOAD (*.epk file
download)
9.1 Put the USB Stick to the USB socket
9.2 Press Menu key, and move OPTION
9.3 Press “FAV” Press 7 times.
9.4 Select download file (epk file)
9.5 After download is finished, remove the
USB stick.
9.6 Press “IN-START” key of ADJ remote
control, check the S/W version.
- 19 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes

Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes - 20 - LGE Internal Use Only
LV1
200
LV2
300
400
540
900 910
810
520
530
800
500
A10
A5
A2
120
510
EXPLODED VIEW
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE