LG 32LV5500 User manual

LED LCD TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : LT12E
MODEL : 32LV5500 32LV5500-DD
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 : MFL67007902 (1102-REV00)

LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes - 2 -
CONTENTS
CONTENTS .............................................................................................. 2
SAFETY PRECAUTIONS ......................................................................... 3
SPECIFICATION....................................................................................... 6
ADJUSTMENT INSTRUCTION .............................................................. 18
EXPLODED VIEW .................................................................................. 26
SVC. SHEET ...............................................................................................

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

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

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

LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
1. Application range
This spec sheet is applied all of the 32”,42”,47”,55”,60”, 72”
LCD TV with LT12B/C/D/E/N chassis.
2. Requirement for Test
Each part is tested as below without special appointment.
1) Temperature: 25 ºC ± 5 ºC, CST : 40 ± 5 ºC
2) Relative Humidity: 65 ± 10 %
3) Power Voltage : Standard input voltage(100-240V~, 50/60Hz)
* Standard Voltage of each product is marked by models
4) Specification and performance of each parts are followed
each drawing and specification by part number in
accordance with 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
- 6 -
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement.

- 7 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. General Specification(TV)
No Item Specification Remark
32 wideColor Display Module Resolution: 1920*1080
42 wideColor Display Module Resolution: 1920*1080
47 wideColor Display Module Resolution: 1920*1080
55 wideColor Display Module Resolution: 1920*1080
65 wideColor Display Module Resolution: 1920*1080
1. Display Screen Device
72 wideColor Display Module Resolution: 1920*1080
2. AspectRatio 16:9
32" TFT WUXGA LCD
42" TFT WUXGA LCD
47 TFT WUXGA LCD
55 TFT WUXGA LCD
3. LCDModule
42 ALEF
47 ALEF
55 ALEF
65
72 IOL
TFT Temp. : 0 ~ 40deg
Humidity : 0 ~ 85%
ALEF Temp. : 0 ~ 50deg
Humidity : 20 ~ 90%
4. Operating Environment
IOL Temp. : 0 ~ 50deg
Humidity : 20 ~ 90%
TFT Temp. : -20 ~ 60deg
Humidity : 10 ~ 90%
ALEF Temp. : -20 ~ 60deg
Humidity : 10 ~ 90%
5. Storage Environment
IOL Temp. : -20 ~ 60deg
Humidity : 10 ~ 90%
LGE SPEC
6. Input Voltage AC100~ 240V, 50/60Hz
32 50 W Normal : LC320EUN-SDV2 [32LV3700-DA]
42 90 W Normal : LC420EUN-SDV3 [42LV3700-DA]
FHD
60Hz
Edge LED 47 90 W Normal : LC470EUE-SDV1 [37LV3700-DA]
100 W Normal : V315H3-LE8 [32LV5500-DD]
60 W Normal : LC320EUD-SDA1 [32LV5500-DD]
32 60 W PG: LC320EUD-SDF1 [32LW5700-DA]
110 W Normal : V420H2-LE6 [42LV5500-DD]
90
100
110
W Normal : LC420EUF-SDA1 [42LV5500-DD]
42 100 W
W
W
PG: LC420EUF-SDF1 [42LW5700-DA]
Normal : LC470EUF-SDA1 [47LV5500-DD]
47 PG: LC470EUF-SDF1 [47LW5700-DA]
FHD
120Hz
Edge LED
55 14 0 W Normal : LC550EUF-SDA1 [55LV5500-DD]
42 110 W SG: LC420DUC-SDS1 [42LW7700-DA]
47 160 W SG: LC470DUC-SDS1 [47LW7700-DA]
7. Power Consumption
= LCD(Module) +
Backlight(LED)
FHD
M240Hz
ALEF 55 170 W SG: LC550DUC- SDS1[55LW7700-DA]
47 30 W SG: LC470DUT-SDA1 Only Cell
FHD
T480Hz
ALEF 55 30 W SG: LC550DUT-SDA1 Only Cell
65
FHD
T480Hz
IOL 72 400 W SG: LC720DUC-SCM1 Only Cell

- 8 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
Maker Inch (H)mm x(V)mm x (D)mm Unit: mm
735.4 x 433.0 x 10.8
LC320EUN-SDV2 : Edge Non-3D_60Hz
735.4 x 433.0 x 10.8
LC320EUD-SDA1 : Edge Non-3D_120Hz
32 698.40 x 392.85 x 10.8
LC320EUD-SDF1 : Edge3D-PG
968.4 x 564 x 10.8
LC420EUN-SDV3: EdgeNon-3D_60Hz
968.4 x 564 x 10.8
LC420EUF-SDA1 : Edge Non-3D_120Hz
968.4 x 564 x 10.8
LC420EUF-SDF1 : Edge3D-PG
42
968.4 x 564 x 12.2
LC420DUC-SDS1 : ALEF 3D-SG M240
1078.6 x 626.0x 10.8
LC470EUE-SDV1 : Edge Non-3D_60Hz
1078.6 x 626.0x 10.8
LC470EUF-SDA1 : Edge Non-3D_120Hz
1078.6 x 626.0x 10.8
LC470EUF-SDF1 : Edge3D-PG
1078.6 x 626.0x 12.2
LC470DUC-SDS1 : ALEF 3D-SG M240
47
1054.5 x 600.0x 1.8
LC470DUT-SDA1 : ALEF 3D-SGT480
1255.6 x 726.4x 19.0
LC550EUF-SDA1 : Edge Non-3D_120Hz
1255.6 x 726.4x 12.2
LC550DUC- SDS1 : ALEF 3D-SG M240
55 1220.8 x 693.8x 1.8
LC550DUT-SDA1 : ALEF 3D-SGT480
65
LGD
72 1666.0 x 968.0x 60.0 LC720DUC-SCM1 : IOL 3D-SG
32 735.4 x 433 x 10.8 V315H3-LE8 : EdgeNon-3D
Size
CMI 42 968.4 x 564 x 10.8 V420H2-LE6 : EdgeNon-3D
Maker Inch mm x mm mm
LC320EUN-SDV2 : Edge Non-3D_60Hz
LC320EUD-SDA1 : Edge Non-3D_120Hz
8. LCD Module
Pixel Pitch LGD 32 0.36375 x 0.36375
LC320EUD-SDF1 : Edge3D-PG
LC420EUN-SDV3: EdgeNon-3D_60Hz
LC420EUF-SDA1 : Edge Non-3D_120Hz
LC420EUF-SDF1 : Edge3D-PG
42 0.4845 x 0.4845
LC420DUC-SDS1 : ALEF 3D-SG M240
LC470EUE-SDV1 : Edge Non-3D_60Hz
LC470EUF-SDA1 : Edge Non-3D_120Hz
LC470EUF-SDF1 : Edge3D-PG
LC470DUC-SDS1 : ALEF 3D-SG M240
47 0.5415 x 0.5415
LC470DUT-SDA1 : ALEF 3D-SGT480
LC550EUF-SDA1 : Edge Non-3D
LC550DUC- SDS1 : ALEF 3D-SG M240
55 0.630 x 0.630
LC550DUT-SDA1 : ALEF 3D-SGT480
65
72 0.831 x 0.831 LC720DUC-SCM1 : IOL 3D-SG
32 0.12125 x 0.12125 V315H3-LE8 : EdgeNon-3D
CMI 42 0.1615 x 0.4845 V420H2-LE6 : EdgeNon-3D
32 Ed ge-LED LC320EUN-SDV2 LC320EUD-SDA1
LC320EUD-SDF1
Edge-LED LC420EUN-SDV3 LC420EUF-SDA1
LC420EUF-SDF1
42
ALEF LC420DUC-SDS1
Edge-LED LC470EUE-SDV1 LC470EUF-SDA1
LC470EUF-SDF1
47
ALEF LC470DUC-SDS1
LC470DUC-SDS1
Edge-LED LC550EUF-SDA1
55 ALEF LC550DUC- SDS1
LC550DUT-SDA1
Back Light LGD
65

- 9 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
72 IOL LC720DUC-SCM1
32 Ed ge-LED V315H3-LE8
CMI 42 Ed ge-LED V420H2-LE6
1.06 B (10-bit) Except FHD 60Hz models
Display Colors 16.7 M (8-bit) Only FHD 60Hz models
Coating 3H(Hard coating), Anti-glare
5. Chrominance & Luminance
No Item Min Typ Max Unit Remark
89/89
89/89
Edge :LC320EUN-SDV2
Edge :LC420EUN-SDV3
Edge :LC470EUE-SDV1
Edge :LC320EUD-SDA1
Edge :LC420EUF-SDA1
Edge :LC470EUF-SDA1
Edge :LC550EUF-SDA1
Edge :LC320EUD-SDF1
Edge :LC420EUD-SDF1
Edge :LC470EUF-SDF1
ALEF : LC420DUC-SDS1
ALEF : LC470DUC-SDS1
ALEF : LC550DUC-SDS1
ALEF : LC470DUT-SDA1
ALEF : LC550DUT-SDA1
IOL : LC720DUC-SCM1
1 View angle (R/L, U/D)
88/88
88/88
degree
Edge :V315H3-LE8
Edge :V420H2-LE6
290 360
Edge :LC320EUN-SDV2
Edge :LC420EUN-SDV3
Edge : LC470EUE-SDV1
320 400
Edge :V315H3-LE8
Edge :LC320EUD-SDA1
Edge :LC420EUF-SDA1
Edge :LC470EUF-SDA1
Edge :LC550EUF-SDA1
: FHD 120Hz EdgeLED
Edge :LC320EUD-SDF1
Edge :LC420EUF-SDF1
Edge :LC470EUF-SDF1
: FHD 120HzPatternedEdgeLED
2 Luminance
(W/O PC mode)
360 450
cd/m
ALEF : LC420DUC-SDS1
ALEF : LC470DUC-SDS1
ALEF : LC550DUC-SDS1
: FHD M240Hz ALEF LED

- 10 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
350 450 Edge :V420H2-LE6
: FHD 120Hz EdgeLED
360 450 ALEF : LC470DUT-SDA1
ALEF : LC550DUT-SDA1
: FHD T480Hz ALEF LED
400 500 IOL : LC720DUC-SCM1
: FHD T480Hz IOL LED
1000:1 1400:1 Edge :LC320EUN-SDV2
Edge :LC420EUN-SDV3
Edge :LC470EUE-SDV1
3500:1 5000:1 Edge :V315H3-LE8
4200:1 6000:1 Edge :V420H2-LE6
1100:1 1600:1
Edge :LC320EUD-SDA1
Edge :LC420EUF-SDA1
Edge :LC470EUF-SDA1
Edge :LC550EUF-SDA1
Edge :LC320EUD-SDF1
Edge :LC420EUF-SDF1
Edge : LC470EUF-SDF1
900:1 1300:1
ALEF : LC420DUC-SDS1
ALEF : LC470DUC-SDS1
ALEF : LC550DUC-SDS1
900:1 1300:1
ALEF : LC470DUT-SDA1
ALEF : LC550DUT-SDA1
3 Module Contrast Ratio
1000:1 1200:1 IOL : LC720DUC-SCM1
X 0.279
White Y 0.292
X 0.637
Red Y 0.341
X 0.320
Green Y 0.606
X 0.152
Blue Y
Typ.
-0.03
0.055
Typ.
+0.03 Edge :LC320EUN-SDV2
X 0.279
4 CIE
Color Coordinates
White Y 0.292 Typ. Edge :LC420EUN-SDV3
X 0.637
Red Y 0.341
X 0.325
Green Y 0.600
X 0.152
Blue Y
Typ.
-0.03
0.051
+0.03
X 0.279
White Y 0.292
X 0.639
Red Y 0.343
X 0.316
Green Y 0.595
X 0.152
Blue Y
Typ.
-0.03
0.058
Typ.
+0.03 Edge : LC470EUE-SDV1
X 0.280
White Y 0.290
X 0.635
Red Y 0.323
X 0.288
Green Y 0.600
X 0.148
Blue Y
Typ.
-0.03
0.050
Typ.
+0.03 Edge :V315H3-LE8
X 0.279
White Y 0.292
X 0.649
Red Y 0.333
X 0.301
Green Y 0.609
X 0.152
Blue Y
Typ.
-0.03
0.060
Typ.
+0.03 Edge : LC320EUD-SDA1

- 11 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
Y
X
X 0.280
White 0.290
0.644
Red Y
Typ.
-0.03
0.331
Typ.
+0.03 Edge :V420H2-LE6
0.297
Green 0.618
0.147
Blue 0.054
X 0.279
White Y 0.292
X 0.644
Red Y
X
Y
X
Y
0.333
X 0.306
Green Y 0.604
X 0.150
Blue Y
Typ.
-0.03
0.058
Typ.
+0.03 Edge : LC420EUF-SDA1
X 0.279
White Y 0.292
X 0.648
Red Y 0.333
X 0.308
Green Y 0.600
X 0.149
Blue Y
Typ.
-0.03
0.059
Typ.
+0.03 Edge : LC470EUF-SDA1
X
X
X
X
0.279
White Y 0.292
0.649
Red Y 0.332
0.307
Green Y
Y
0.595
0.149
Blue Y
Typ.
-0.03
0.059
Typ.
+0.03 Edge : LC550EUF-SDA1
X 0.279
White 0.292
X 0.648
Red Y 0.334
X 0.307
Green Y
Typ.
-0.03
0.606
Typ.
+0.03 Edge :LC320EUD-SDF1
X 0.152
Blue Y
Y
0.058
X 0.279
White 0.292
X 0.650
Red Y 0.333
X 0.307
Green Y 0.604
X 0.150
Blue Y
Y
Typ.
-0.03
0.059
Typ.
+0.03 Edge :LC420EUF-SDF1
X 0.279
White 0.292
X 0.648
Red Y 0.332
X 0.306
Green Y 0.606
X 0.150
Blue Y
Typ.
-0.03
0.058
Typ.
+0.03 Edge :LC470EUF-SDF1
X
White Y
X
Red Y
X
Green Y
X
Blue Y
Typ.
-0.03
Typ.
+0.03 ALEF : LC420DUC-SDS1
Y
X
X 0.280
White 0.290
0.644
Red Y
Typ.
-0.03
0.331
Typ.
+0.03 Edge :V420H2-LE6
0.297
Green 0.618
0.147
Blue 0.054
X 0.279
White Y 0.292
X 0.644
Red Y
X
Y
X
Y
0.333
X 0.306
Green Y 0.604
X 0.150
Blue Y
Typ.
-0.03
0.058
Typ.
+0.03 Edge : LC420EUF-SDA1
X 0.279
White Y 0.292
X 0.648
Red Y 0.333
X 0.308
Green Y 0.600
X 0.149
Blue Y
Typ.
-0.03
0.059
Typ.
+0.03 Edge : LC470EUF-SDA1
X
X
X
X
0.279
White Y 0.292
0.649
Red Y 0.332
0.307
Green Y
Y
0.595
0.149
Blue Y
Typ.
-0.03
0.059
Typ.
+0.03 Edge : LC550EUF-SDA1
X 0.279
White 0.292
X 0.648
Red Y 0.334
X 0.307
Green Y
Typ.
-0.03
0.606
Typ.
+0.03 Edge :LC320EUD-SDF1
X 0.152
Blue Y
Y
0.058
X 0.279
White 0.292
X 0.650
Red Y 0.333
X 0.307
Green Y 0.604
X 0.150
Blue Y
Y
Typ.
-0.03
0.059
Typ.
+0.03 Edge :LC420EUF-SDF1
X 0.279
White 0.292
X 0.648
Red Y 0.332
X 0.306
Green Y 0.606
X 0.150
Blue Y
Typ.
-0.03
0.058
Typ.
+0.03 Edge :LC470EUF-SDF1
X
White Y
X
Red Y
X
Green Y
X
Blue Y
Typ.
-0.03
Typ.
+0.03 ALEF : LC420DUC-SDS1

- 12 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
Y
X
Y
X
Y
X
X
0.279
White 0.292
0.644
Red 0.333
0.308
Green 0.605
0.149
Blue Y
Typ.
-0.03
0.059
Typ.
+0.03 ALEF : LC470DUC-SDS1
X 0.279
White Y 0.292
X 0.644
Red Y 0.333
X 0.308
Green Y 0.605
X 0.149
Blue Y
Typ.
-0.03
0.059
Typ.
+0.03 ALEF : LC550DUC-SDS1
X 0.280
White Y 0.290
X 0.651
Red Y 0.334
X 0.312
Green Y 0.598
X 0.150
Blue Y
Typ.
-0.03
0.068
Typ.
+0.03 ALEF : LC470DUT-SDA1
X 0.279
White Y 0.292
X 0.642
Red Y 0.333
X 0.307
Green Y 0.606
X 0.149
Blue Y
Typ.
-0.03
0.068
Typ.
+0.03
ALEF : LC550DUT-SDA1
X 0.279
White Y 0.292
X 0.646
Red Y 0.330
X 0.303
Green Y 0.640
X 0.152
Blue Y
Typ.
-0.03
0.059
Typ.
+0.03 IOL : LC720DUC-SCM1

- 13 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
5 8
Edge :LC320EUD-SDA1
Edge :LC370EUD-SDA1
Edge :LC420EUF-SDA1
Edge :LC470EUF-SDA1
Edge :LC320EUD-SDP1
Edge :LC420EUD-SDP1
Edge :LC470EUF-SDP1
Edge :LC550EUF-SDP1
ALEF : LC420DUC-SDS1
ALEF : LC470DUC-SDS1
ALEF : LC550DUC-SDS1
ALEF : LC470DUT-SDA1
ALEF : LC550DUT-SDA1
IOL : LC720DUC-SCM1
8. 5 Edge :V315H3-LE8
6 12 Edge :V420H2-LE6
Gray to Gray
6 9 Edge :LC320EUN-SDV2 Edge :LC420EUN-SDV3
Edge : LC470EUE-SDV1
8 12
Edge :V315H3-LE8
Edge :LC320EUD-SDA1
Edge :LC370EUD-SDA1
Edge :LC420EUF-SDA1
Edge : LC470EUF-SDA1
8 12 Edge :LC320EUD-SDF1 Edge :LC420EUF-SDF1
Edge :LC470EUF-SDF1
8 12 ALEF : LC420DUC-SDS1
ALEF : LC470DUC-SDS1
ALEF : LC550DUC-SDS1
8 12 ALEF : LC470DUT-SDA1
ALEF : LC550DUT-SDA1
5 Response time
MPRT
8 12
ms
IOL : LC720DUC-SCM1
14 18 %
Edge :LC320EUD-SDF1
Edge :LC420EUF-SDF1
Edge :LC470EUF-SDF1
14 18 %
ALEF : LC420DUC-SDS1
ALEF : LC470DUC-SDS1
ALEF : LC550DUC-SDS1
14 18 %
ALEF : LC470DUT-SDA1
ALEF : LC550DUT-SDA1
5 3D Crosstalk
14 18 % IOL : LC720DUC-SCM1

- 14 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
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 27.0 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 67.500 60 148.50 HDTV 1080P
15. 1920*1080 67.432 59.94 148.352 HDTV 1080P
16. 1920*1080 27.000 24.000 74.25 HDTV 1080P
17. 1920*1080 26.97 23.976 74.176 HDTV 1080P
18. 1920*1080 33.75 30.000 74.25 HDTV 1080P
19. 1920*1080 33.71 29.97 740176 HDTV 1080P
7. RGB Input (PC)
No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed
PC
1. 640*350 31.468 70.09 25.17 EGA
2. 720*400 31.469 70.08 28.32 DOS
3. 640*480 31.469 59.94 25.17 VESA(VGA)
4. 800*600 37.879 60.31 40.00 VESA(SVGA)
5. 1024*768 48.363 60.00 65.00 VESA(XGA)
6. 1360*768 47.712 60.015 85.50 VESA(WXGA)
7. 1920*1080 66.587 59.94 138.50 WUXGA (Reduced Blanking)

LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes - 15 -
8. 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 79.5 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 67.500 60.000 148.50 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 67.500 60 148.50 HDTV 1080P
12 1920*1080 67.432 59.939 148.352 HDTV 1080P
13 1920*1080 27.000 24.000 74.25 HDTV 1080P
14 1920*1080 26.97 23.976 74.176 HDTV 1080P
15 1920*1080 33.75 30.000 74.25 HDTV 1080P
16 1920*1080 33.71 29.97 74.176 HDTV 1080P
(* Except Brazil)
•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

- 16 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
* Only 3DTV
9. HDMI Input(1.4a)
10. HDMI Input(1.3a)
No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed 3D input proposed mode
1 1920*1080 53.95 / 54 23.98 / 24 148.35/148.5 HDTV 1080P Frame packing
2 1280*720 89.9 / 90 59.94/60 148.35/148.5 HDTV 720P Frame packing
3 1280*720 75 50 148.5 HDTV 720P Frame packing
4 1920*1080 67.5 60 148.5 HDTV 1080P Side by Side(half), Top and bottom
5 1920*1080 56.250 50 148.5 HDTV 1080P Side by Side(half), Top and bottom,
6 1280*720 45 60 74.25 HDTV 720P Side by Side(half), Top and Bottom
7 1280*720 37.5 50 74.25 HDTV 720P Side by Side(half), Top and Bottom
8 1920*1080 33.75 60 74.25 HDTV 1080i Side by Side(half), Top and Bottom
9 1920*1080 28.125 50 74.25 HDTV 1080i Side by Side(half), Top and Bottom
10 1920*1080 27 24 74.25 HDTV 1080P Side by Side(half), Top and Bottom
11 1920*1080 33.75 30 89.1 HDTV 1080P Side by Side(half), Top and Bottom
No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed 3D input proposed mode
1 1280*720 45.00 60.00 74.25 HDTV 720P Side by Side, Top & Bottom
2 1280*720 37.500 50 74.25 HDTV 720P Side by Side, Top & Bottom
3 1920*1080 33.75 60.00 74.25 HDTV 1080I Side by Side, Top & Bottom
4 1920*1080 28.125 50.00 74.25 HDTV 1080I Side by Side, Top & Bottom
5 1920*1080 27.00 24.00 74.25 HDTV 1080P Side by Side, Top & Bottom, Checkerboard
6 1920*1080 33.75 30.00 74.25 HDTV 1080P Side by Side, Top & Bottom, Checkerboard
7 1920*1080 67.50 60.00 148.5 HDTV 1080P Side by Side, Top & Bottom, Checkerboard
Single Frame Sequential
8 1920*1080 56.250 50 148.5 HDTV 1080P Side by Side, Top & Bottom, Checkerboard
Single Frame Sequential

- 17 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
11. Wireless Input(1.3)
12. RGB input 3D(PC)
No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed 3D input proposed mode
1 1280*720 45.00 60.00 74.25 HDTV 720P Side by Side, Top & Bottom
2 1280*720 37.500 50 74.25 HDTV 720P Side by Side, Top & Bottom
3 1920*1080 33.75 60.00 74.25 HDTV 1080I Side by Side, Top & Bottom
4 1920*1080 28.125 50.00 74.25 HDTV 1080I Side by Side, Top & Bottom
5 1920*1080 27.00 24.00 74.25 HDTV 1080P Side by Side, Top & Bottom, Checkerboard
6 1920*1080 33.75 30.00 74.25 HDTV 1080P Side by Side, Top & Bottom, Checkerboard
7 1920*1080 67.50 60.00 148.5 HDTV 1080P Side by Side, Top & Bottom, Checkerboard
Single Frame Sequential
8 1920*1080 56.250 50 148.5 HDTV 1080P Side by Side, Top & Bottom, Checkerboard
Single Frame Sequential
No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed
PC DDC
1. 1920*1080 67.50 60.00 148.5 WUXGA (Reduced Blanking) (Side by Side), Top and Bottom O

LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.
Only for training and service purposes - 18 -
ADJUSTMENT INSTRUCTION
1. Application Range
This specification sheet is applied all of the LT12C/D/E/F/N
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

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

- 20 - 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)