LG 43LF63 Series User manual

Printed in KoreaP/NO : MFL68702503 (1502-REV00)
CHASSIS : LB51H
MODEL : 43LF63** 43LF63**-T*
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
LED TV
SERVICE MANUAL
North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com
Internal Use Only

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Only for training and service purposes
CONTENTS
CONTENTS .............................................................................................. 2
SAFETY PRECAUTIONS ........................................................................ 3
SERVICING PRECAUTIONS.................................................................... 4
SPECIFICATION ....................................................................................... 6
ADJUSTMENT INSTRUCTION .............................................................. 12
DISASSEMBLY........................................................................................20
BLOCK DIAGRAM ................................................................................. 21
EXPLODED VIEW .................................................................................. 30
SCHEMATIC CIRCUIT DIAGRAM ........................................... APPENDIX
TROUBLE SHOOTING GUIDE ................................................ APPENDIX

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Only for training and service purposes
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
IMPORTANT SAFETY NOTICE
SAFETY PRECAUTIONS

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Only for training and service purposes
SERVICING PRECAUTIONS
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 conict between the
following servicing precautions and any of the safety precautions
on page 3 of this publication, always follow the safety precau-
tions. 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 explo-
sion 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 specied 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 ammable mixture.
Unless specied 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 xtures specied in this
service manual.
CAUTION: Do not connect the test xture ground strap to any
heat sink in this receiver.
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid-state) devices can be damaged eas-
ily by static electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices. Examples of typical ES
devices are integrated circuits and some eld-effect transistors
and semiconductor “chip” components. The following techniques
should be used to help reduce the incidence of component dam-
age 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. Alter-
natively, obtain and wear a commercially available discharg-
ing 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 expo-
sure 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 sol-
der removal devices not classied as “anti-static” can generate
electrical charges sufcient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate
electrical charges sufcient 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 elec-
trically 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 mate-
rial to the chassis or circuit assembly into which the device will
be installed.
CAUTION: Be sure no power is applied to the chassis or cir-
cuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replace-
ment ES devices. (Otherwise harmless motion such as the
brushing together of your clothes fabric or the lifting of your
foot from a carpeted oor can generate static electricity suf-
cient to damage an ES device.)
General Soldering Guidelines
1. Use a grounded-tip, low-wattage soldering iron and appropri-
ate 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 ows onto and around both the compo-
nent 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.

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Only for training and service purposes
IC Remove/Replacement
Some chassis circuit boards have slotted holes (oblong) through
which the IC leads are inserted and then bent at against the cir-
cuit 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 remain-
ing 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 pos-
sible 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 when-
ever 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 connec-
tions).
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 con-
nected 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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Only for training and service purposes
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement .
1. Application range
This specification is applied to the LED TV used LB51H
chassis.
2. Requirement for Test
Each part is tested as below without special appointment.
(1) Temperature: 25 °C ± 5 °C(77 °F ± 9 °F), CST: 40 °C ± 5 °C
(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
4. Model General Specification
No. Item Specication Remarks
1 Market Asia, Oceania, Africa, Middle East
(PAL/DVB Market)
2 Television system
1) Digital TV
- DVB-T/T2
- DVB-C
- DVB-S/S2
2) Analogue TV
PAL B/B, PAL B/G, PAL D/K, PAL-I,
SECAM B/G, SECAM D/K, NTSC-M
3 Channel Storage ATV / DVB-T/T2 : 1,500EA
DVB-S/S2 : 6,000EA
4 Receiving system Analog : Upper Heterodyne
Digital : COFDM, QAM
► DVB-T
- Guard Interval(Bitrate_Mbit/s)
1/4, 1/8, 1/16, 1/32
- Modulation : Code Rate
QPSK : 1/2, 2/3, 3/4, 5/6, 7/8
16-QAM : 1/2, 2/3, 3/4, 5/6, 7/8
64-QAM : 1/2, 2/3, 3/4, 5/6, 7/8
► DVB-T2 (Model : T2 only Model)
- Guard Interval(Bitrate_Mbit/s)
1/4, 1/8, 1/16, 1/32, 1/128, 19/128, 19/256,
- Modulation : Code Rate
QPSK : 1/2, 2/5, 2/3, 3/4, 5/6
16-QAM : 1/2, 2/5, 2/3, 3/4, 5/6
64-QAM : 1/2, 2/5, 2/3, 3/4, 5/6
256-QAM : 1/2, 2/5, 2/3, 3/4, 5/6
► DVB-C
- Symbolrate : 4.0Msymbols/s to 7.2Msymbols/s
- Modulation :
16QAM, 64-QAM, 128-QAM and 256-QAM
► DVB-S/S2
- symbolrate
DVB-S2 (8PSK / QPSK) : 2 ~ 45Msymbol/s
DVB-S (QPSK) : 2 ~ 45Msymbol/s
- viterbi
DVB-S mode: 1/2, 2/3, 3/4, 5/6, 7/8
DVB-S2 mode: 1/2, 2/3, 3/4, 3/5, 4/5, 5/6, 8/9, 9/10

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Only for training and service purposes
5. Component Video Input (Y, Pb, Pr)
No. Specication
Resolution H-freq(kHz) V-freq(Hz) Pixel clock
1. 720×480 15.73 60.00 SDTV, DVD 480i
2. 720×480 15.63 59.94 SDTV, DVD 480i
3. 720×480 31.47 59.94 480p
4. 720×480 31.50 60.00 480p
5. 720×576 15.625 50.00 SDTV, DVD 625 Line
6. 720×576 31.25 50.00 HDTV 576p
7. 1280×720 45.00 50.00 HDTV 720p
8. 1280×720 44.96 59.94 HDTV 720p
9. 1280×720 45.00 60.00 HDTV 720p
10. 1920×1080 31.25 50.00 HDTV 1080i
11. 1920×1080 33.75 60.00 HDTV 1080i
12. 1920×1080 33.72 59.94 HDTV 1080i
13. 1920×1080 56.250 50 HDTV 1080p
14. 1920×1080 67.5 60 HDTV 1080p
No. Item Specication Remarks
5 Video Input RCA PAL, SECAM, NTSC 4 System : PAL, SECAM, NTSC, PAL60
6 Component Input Y/Pb/Pr
7 Head phone out Antenna, AV1, Component, HDMI1, HDMI2,
HDMI3, USB1, USB2, USB3
8 HDMI Input HDMI1-DTV, HDMI2-DTV, HDMI3-DTV PC(HDMI Ver. 1.4)
Support HDCP
9 Audio Input (3EA) DVI Audio, Component, AV L/R Input.
10 SDPIF out (1EA) SPDIF out
11 USB Input For My Media(Movie/Photo/Music List) or
For SVC

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6.2. PC mode
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Remarks
1 640 x 350 @70Hz 31.468 70.09 EGA
2 720 x 400 @70Hz 31.469 70.08 DOS
3 640 x 480 @60Hz 31.469 59.94 VESA(VGA)
4 800 x 600 @60Hz 37.879 60.31 VESA(SVGA)
5 1024 x 768 @60Hz 48.363 60.00 VESA(XGA)
6 1152 x 864 @60Hz 54.348 60.053 VESA
7 1280 x 1024 @60Hz 63.981 60.020 VESA(SXGA) FHD only
8 1360 x 768 @60Hz 47.712 60.015 VESA(WXGA)
9 1920 x 1080 @60Hz 67.5 60.00 WUXGA(CEA 861D) FHD only
6. HDMI Input
6.1. DTV mode
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Remarks
1. 640*480 31.469 59.94 SDTV 480P
2. 648*480 31.5 60.00 SDTV 480P
3. 720*480 15.73 59.97 SDTV, DVD 480I(525I)
Spec. out but display4. 720*480 15.75 60 SDTV, DVD 480I(525I)
5. 720*576 15.625 50 SDTV, DVD 576I(625I) 50Hz
6. 720*480 31.47 59.94 SDTV 480P
7. 720*480 31.5 60 SDTV 480P
8. 720*576 31.25 50 SDTV 576P
9. 1280*720 44.96 59.94 HDTV 720P
10. 1280*720 45 60 HDTV 720P
11. 1280*720 37.5 50 HDTV 720P
12. 1920*1080 28.125 50 HDTV 1080I
13. 1920*1080 33.72 59.94 HDTV 1080I
14. 1920*1080 33.75 60.00 HDTV 1080I
15. 1920*1080 26.97 23.976 HDTV 1080P
16. 1920*1080 27.00 24.000 HDTV 1080P
17. 1920*1080 33.71 29.97 HDTV 1080P
18. 1920*1080 33.75 30.00 HDTV 1080P
19. 1920*1080 56.25 50.00 HDTV 1080P
20. 1920*1080 67.432 59.94 HDTV 1080P
21. 1920*1080 67.5 60.00 HDTV 1080P

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No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) VIC 3D input proposed mode Proposed
1
640*480
31.469 / 31.5 59.94/ 60 25.125 1 Top-and-Bottom
Side-by-side(half)
Secondary(SDTV 480P)
Secondary(SDTV 480P)
2 62.938/63 59.94/ 60 50.35/50.4 1 Frame packing
Line alternative
Secondary(SDTV 480P)
(SDTV 480P)
3 31.469 / 31.5 59.94/ 60 50.35/50.4 1 Side-by-side(Full) (SDTV 480P)
4
720*480
31.469 / 31.5 59.94 / 60 27.00/27.03 2,3 Top-and-Bottom
Side-by-side(half)
Secondary(SDTV 480P)
Secondary(SDTV 480P)
5 62.938 / 63 59.94 / 60 54/54.06 2,3 Frame packing
Line alternative
Secondary(SDTV 480P)
(SDTV 480P)
6 31.469 / 31.5 59.94 / 60 54/54.06 2,3 Side-by-side(Full) (SDTV 480P)
7
720*576
31.25 50 27 17,18 Top-and-Bottom
Side-by-side(half)
Secondary(SDTV 576P)
Secondary(SDTV 576P)
8 62.5 50 54 17,18 Frame packing
Line alternative
Secondary(SDTV 576P)
(SDTV 576P)
9 31.25 50 54 17,18 Side-by-side(Full) (SDTV 576P)
10
1280*720
37.5 50 74.25 19 Top-and-Bottom
Side-by-side(half)
Primary(HDTV 720P)
Primary(HDTV 720P)
11 75 50 148.5 19 Frame packing
Line alternative
Primary(HDTV 720P)
(HDTV 720P)
12 37.5 50 148.5 19 Side-by-side(Full) (HDTV 720P)
13 44.96 / 45 59.94 / 60 74.18/74.25 4 Top-and-Bottom
Side-by-side(half)
Primary(HDTV 720P)
Primary(HDTV 720P)
14 89.91 / 90 59.94 / 60 148.35/148.5 4 Frame packing
Line alternative
Primary(HDTV 720P)
(HDTV 720P)
15 44.96 / 45 59.94 / 60 148.35/148.5 4 Side-by-side(Full) (HDTV 720P)
16
1920*1080
33.72 / 33.75 59.94 / 60 74.18/74.25 5 Top-and-Bottom
Side-by-side(half)
Secondary(HDTV 1080I)
Primary(HDTV 1080I)
17 67.432 / 67.50 59.94 / 60 148.35/148.5 5 Frame packing
Field alternative
Primary(HDTV 1080I)
(HDTV 1080I)
18 33.72 / 33.75 59.94 / 60 148.35/148.5 5 Side-by-side(Full) (HDTV 1080I)
19 28.125 50.00 74.25 20 Top-and-Bottom
Side-by-side(half)
Secondary(HDTV 1080I)
Primary(HDTV 1080I)
20 56.25 50.00 148.5 20 Frame packing
Field alternative
Primary(HDTV 1080I)
(HDTV 1080I)
21 28.125 50.00 148.5 20 Side-by-side(Full) (HDTV 1080I)
22 26.97 / 27 23.97 / 24 74.18/74.25 32 Top-and-Bottom
Side-by-side(half)
Primary(HDTV 1080P)
Primary(HDTV 1080P)
23 43.94/54 23.97 / 24 148.35/148.5 32 Frame packing
Line alternative
Primary(HDTV 1080P)
(HDTV 1080P)
24 26.97 / 27 23.97 / 24 148.35/148.5 32 Side-by-side(Full) (HDTV 1080P)
25 28.125 25 74.25 33 Top-and-Bottom
Side-by-side(half)
Secondary(HDTV 1080P)
Secondary(HDTV 1080P)
26 56.24 25 148.5 33 Frame packing
Line alternative
Secondary(HDTV 1080P)
(HDTV 1080P)
27 28.12 25 148.5 33 Side-by-side(Full) (HDTV 1080P)
28 33.716 / 33.75 29.976 / 30.00 74.18/74.25 34 Top-and-Bottom
Side-by-side(half)
Primary(HDTV 1080P)
Secondary(HDTV 1080P)
29 67.432 / 67.5 29.976 / 30.00 148.35/148.5 34 Frame packing
Line alternative
Primary(HDTV 1080P)
(HDTV 1080P)
30 33.716 / 33.75 29.976 / 30.00 148.35/148.5 34 Side-by-side(Full) (HDTV 1080P)
31 56.25 50 148.5 31 Top-and-Bottom
Side-by-side(half)
Primary(HDTV 1080P)
Secondary(HDTV 1080P)
32 67.432 / 67.5 59.94 / 60 148.35/148.50 16 Top-and-Bottom
Side-by-side(half)
Primary(HDTV 1080P)
Secondary(HDTV 1080P)
7. 3D Mode
7.1. HDMI 1.4b (3D supported mode automatically)

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7.3. RF Input(3D supported mode manually)
No. Resolution Proposed 3D input proposed mode
1 HD 1080I
720P 2D to 3D
Side by Side(Half)
Top & Bottom
2 SD 576P
576I
3 SD (ATV : CVBS / SCART) -
7.4. RF Input (3D supported mode automatically)
No. Signal 3D input proposed mode
1 Frame Compatible Side by Side(Half), Top & Bottom
7.2. HDMI Input(1.3)
No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed 3D input proposed mode
1 720*480 31.5 60 27.03 SDTV 480P
2D to 3D, Side by Side(Half), Top & Bot-
tom, Checker Board, Frame Sequential,
Row Interleaving, Column Interleaving
2 720*576 31.25 50 27 SDTV 576P
3 1280*720 45.00 60.00 74.25 HDTV 720P
4 1280*720 37.500 50 74.25 HDTV 720P
5 1920*1080 33.75 60.00 74.25 HDTV 1080I 2D to 3D, Side by Side(Half), Top & Bot-
tom
6 1920*1080 28.125 50.00 74.25 HDTV 1080I
7 1920*1080 27.00 24.00 74.25 HDTV 1080P 2D to 3D, Side by Side(Half), Top & Bot-
tom, Checker Board, Row Interleaving,
Column Interleaving
8 1920*1080 28.12 25 74.25 HDTV 1080P
9 1920*1080 33.75 30.00 74.25 HDTV 1080P
10 1920*1080 67.50 60.00 148.5 HDTV 1080P 2D to 3D, Side by Side(Half), Top &
Bottom, Checker Board, Single Frame
Sequential, Row Interleaving, Column
Interleaving
11 1920*1080 56.250 50 148.5 HDTV 1080P
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 3D input proposed mode
1 Under 704x480 - - - 2D to 3D
2
Over 704x480
Under 1080P
interlaced
- - - 2D to 3D, Side by Side(Half), Top & Bottom
3
Over 704x480
Under 1080P
progressive
- 50 / 60 - 2D to 3D, Side by Side(Half), Top & Bottom, Checker Board,
Row Interleaving, Column Interleaving, Frame Sequential
4
Over 704x480
Under 7080P
progressive
- others - 2D to 3D, Side by Side(Half), Top & Bottom, Checker Board,
Row Interleaving, Column Interleaving
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 3D input proposed mode
1 Under 320x240 - - - 2D to 3D
2 Over 320x240 - - - 2D to 3D, Side by Side(Half), Top & Bottom
7.5. USB Input (3D supported mode manually)
7.6. USB (Photo) Input (3D supported mode manually)

- 11 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock Proposed 3D input proposed mode
1 1280*720 45.00 60.00 74.25 HDTV 720P
2D to 3D, Side by Side(Half), Top & Bottom
2 1280*720 37.500 50 74.25 HDTV 720P
3 1280*720 44.96 59.94 74.176 HDTV 720P
4 1920*1080 33.75 60.00 74.25 HDTV 1080I
5 1920*1080 33.72 59.94 74.176 HDTV 1080I
6 1920*1080 28.12 50 74.25 HDTV 1080I
7 1920*1080 67.500 60 148.50 HDTV 1080P
8 1920*1080 67.432 59.94 148.352 HDTV 1080P
9 1920*1080 27.000 24.000 74.25 HDTV 1080P
10 1920*1080 28.12 25 74.25 HDTV 1080P
11 1920*1080 56.25 50 74.25 HDTV 1080P
12 1920*1080 26.97 23.976 74.176 HDTV 1080P
13 1920*1080 33.75 30.000 74.25 HDTV 1080P
14 1920*1080 33.71 29.97 74.176 HDTV 1080P
7.8. Component Input(3D) (3D supported mode manually)
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 3D input proposed mode Proposed
1 1024*768 48.36 60 65 2D to 3D, Side by Side(half)
Top & Bottom HDTV 768P
2 1360*768 47.71 60 85.5
3 1920*1080 67.500 60 148.50
2D to 3D, Side by Side(half), Top &
Bottom, Checker Board, Single Frame
Sequential, Row Interleaving, Column
Interleaving
HDTV 1080P
4 Others - - -
2D to 3D,
Side by Side(half)
Top & Bottom
640*350
720*400
640*480
800*600
1152*864
7.7. HDMI-PC Input (3D supported mode manually)
* USB Input (3D supported mode automatically)
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 3D input proposed mode
1 1080P 33.75 30 74.25 Side by Side(Half), Top & Bottom, Checker Board,
MPO(Photo), JPS(Photo)
7.10. 3D Input mode
No. Side by Side Top & Bottom Checker board Single Frame
Sequential
Frame
Packing 2D to 3D
1
ii.
iii.
iv.
v.
vi.
7.9. Miracast, Widi (3D supported mode manually)
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 3D input proposed mode
1 1024X768p - 30 / 60 -
2D to 3D, Side by Side(Half), Top & Bottom2 1280x720p - 30 / 60 -
3 1920X1080p 30 / 60
4 Others - 2D to 3D

- 12 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
ADJUSTMENT INSTRUCTION
1. Application Range
This specification sheet is applied to all of the LED TV with
LB51H chassis.
2. Designation
(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 °C ± 5 °C of temperature and 65 % ± 10 % of relative
humidity if there is no specific designation.
(4) The input voltage of the receiver must keep AC 100-240
V~, 50/60 Hz.
(5) The receiver must be operated for about 5 minutes prior to
the adjustment when module is in the circumstance of over
15.
In case of keeping module is in the circumstance of 0 °C, it
should be placed in the circumstance of above 15 °C for 2
hours.
In case of keeping module is in the circumstance of below
-20 °C, it should be placed in the circumstance of above 15
°C for 3 hours.
[Caution]
When still image is displayed for a period of 20 minutes or
longer (Especially where W/B scale is strong. Digital pattern
13ch and/or Cross hatch pattern 09ch), there can some
afterimage in the black level area.
3. Automatic Adjustment
3.1. MAC address D/L, CI+ key D/L, Widevine
key D/L, ESN D/L, HDCP14/20 D/L
Connect: USB port
Communication Prot connection
▪ Com 1,2,3,4 and 115200(Baudrate)
Mode check: Online Only
▪ Check the test process: DETECT → MAC → ESN→
Widevine → CI → HDCP14 → HDCP20
▪ Play: Press Enter key
▪ Result: Ready, Test, OK or NG
▪ Printer Out (MAC Address Label)
3.2. LAN Inspection
3.2.1. Equipment & Condition
▪ Each other connection to LAN Port of IP Hub and Jig
3.2.2. LAN inspection solution
▪ LAN Port connection with PCB
▪ Setting automatic IP
▪ If you want manual connection, enter Network connection at
MENU Mode of TV. Press Start connection key, then
Network will be connected.
3.2.3. WIDEVINE key Inspection
- Confirm key input data at the "IN START" MENU Mode.


- 13 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
3.3. LAN PORT INSPECTION(PING TEST)
Connect SET → LAN port == PC → LAN Port
3.3.1. 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
3.3.2. 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.
3.4. Model name & Serial number Download
3.4.1. Model name & Serial number D/L
▪Press "P-ONLY" key of service remote control.
(Baud rate : 115200 bps)
▪Connect RS-232C Signal to USB Cable to USB.
▪Write Serial number by use USB port.
▪Must check the serial number at Instart menu.
3.4.2. Method & notice
(1) Serial number D/L is using of scan equipment.
(2) Setting of scan equipment operated by Manufacturing
Technology Group.
(3) Serial number D/L must be conformed when it is produced
in production line, because serial number D/L is mandatory
by D-book 4.0.
* Manual Download (Model Name and Serial Number)
If the TV set is downloaded by OTA or service man, sometimes
model name or serial number is initialized.(Not always)
It is impossible to download by bar code scan, so It need
Manual download.
1) Press the "Instart" key of Adjustment remote control.
2) Go to the menu "7.Model Number D/L" like below photo.
3) Input the Factory model name(ex 47LB650V-ZA) or Serial
number like photo.
4) Check the model name Instart menu. → Factory name
displayed. (ex 47LB650V-ZA)
5) Check the Diagnostics.(DTV country only) → Buyer
model displayed. (ex 47LB650V-ZA)
3.5. CI+ Key checking method
- Check the Section 3.1
Check whether the key was downloaded or not at ‘In Start’
menu. (Refer to below).
=> Check the Download to CI+ Key value in LGset.
3.5.1. Check the method of CI+ Key value
(1) Check the method on Instart menu
(2) Check the method of RS232C Command
1) Into the main ass’y mode(RS232: aa 00 00)
2) Check the key download for transmitted command
(RS232: ci 00 10)
3) Result value
- Normally status for download : OKx
- Abnormally status for download : NGx
3.5.2. Check the method of CI+ key value(RS232)
1) Into the main ass’y mode(RS232: aa 00 00)
2) Check the mothed of CI+ key by command
(RS232: ci 00 20)
3) Result value
i 01 OK 1d1852d21c1ed5dcx
3.6. WIFI MAC ADDRESS CHECK
(1) Using RS232 Command
(2) Check the menu on in-start
SET PC
CMD 1 CMD 2 Data 0
A A 0 0
CMD 1 CMD 2 Data 0
C I 1 0
CMD 1 CMD 2 Data 0
A A 0 0
CMD 1 CMD 2 Data 0
C I 2 0
CI+ Key Value
Command Set ACK
Transmission [A][I][][Set ID][][20][Cr] [O][K][X] or [NG]

- 14 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
4. Manual Adjustment
* ADC adjustment is not needed because of OTP(Auto ADC
adjustment)
4.1. EDID DATA
4.1.1. 3D EDID
▪ Reference
- HDMI1 ~ HDMI3
- In the data of EDID, bellows may be different by S/W or
Input mode.
ⓐProduct ID
ⓑSerial No: Controlled on production line.
ⓒMonth, Year: Controlled on production line:
ex) Monthly : ‘01’ → ‘01’
Year : ‘2015’ → ‘19’
ⓓModel Name(Hex): LGTV
ⓔChecksum(LG TV): Changeable by total EDID data.
ⓕVendor Specific(HDMI)
1) Deep color (module 10bit)
2) None deep color (module 8bit)
ⓖColorimetry Data Block(HDMI)
1) The Model not supporting XvYcc
2) The Model supporting XvYcc
4.1.2. 2D EDID
▪ Reference
- HDMI1 ~ HDMI3
- In the data of EDID, bellows may be different by S/W or
Input mode.
ⓐProduct ID
ⓑSerial No: Controlled on production line.
ⓒMonth, Year: Controlled on production line:
ex) Monthly : ‘01’ → ‘01’
Year : ‘2015’ → ‘19'
ⓓModel Name(Hex): LGTV
ⓔChecksum(LG TV): Changeable by total EDID data.
ⓕVendor Specific(HDMI)
1) Deep color (module 10bit)
2) None deep color (module 8bit)
HEX EDID Table DDC Function
0001 0100 Analog
0001 0100 Digital
Chassis MODEL NAME(HEX)
LB51H 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20
ⓔ1ⓔ2ⓔ2
10bit /none XvYcc 8bit /none XvYcc
HDMI1 E6 92 D9
HDMI2 E6 82 C9
HDMI3 E6 72 B9
ⓔ1ⓔ2ⓔ2
10bit /none XvYcc 8bit /none XvYcc
HDMI1 40 D4 1B
HDMI2 40 C4 B
HDMI3 40 B4 FB
INPUT MODEL NAME(HEX)
HDMI1 78 03 0C 00 10 00 B8 2D 20 C0 0E 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10
HDMI2 78 03 0C 00 20 00 B8 2D 20 C0 0E 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10
HDMI3 78 03 0C 00 30 00 B8 2D 20 C0 0E 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10
INPUT MODEL NAME(HEX)
HDMI1 E3 05 00 00
HDMI2 E3 05 00 00
HDMI3 E3 05 00 00
INPUT MODEL NAME(HEX)
HDMI1 78 03 0C 00 10 00 80 1E 20 C0 0E 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10
HDMI2 78 03 0C 00 20 00 80 1E 20 C0 0E 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10
HDMI3 78 03 0C 00 30 00 80 1E 20 C0 0E 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10
HEX EDID Table DDC Function
0001 0100 Analog
0001 0100 Digital
Chassis MODEL NAME(HEX)
LB51H 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20
INPUT MODEL NAME(HEX)
HDMI1 67 03 0C 00 10 00 B8 2D
HDMI2 67 03 0C 00 20 00 B8 2D
HDMI3 67 03 0C 00 30 00 B8 2D
INPUT MODEL NAME(HEX)
HDMI1 67 03 0C 00 10 00 80 1E
HDMI2 67 03 0C 00 20 00 80 1E
HDMI3 67 03 0C 00 30 00 80 1E
INPUT MODEL NAME(HEX)
HDMI1 E3 05 03 01
HDMI2 E3 05 03 01
HDMI3 E3 05 03 01

- 15 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
4.2. White Balance Adjustment
4.2.1. Overview
▪ W/B adj. Objective & How-it-works
(1) Objective: To reduce each Panel's W/B deviation
(2) How-it-works : When R/G/B gain in the OSD is at 192, it
means the panel is at its Full Dynamic Range. In order to
prevent saturation of Full Dynamic range and data, one
of R/G/B is fixed at 192, and the other two is lowered to
find the desired value.
(3) Adjustment condition : normal temperature
1) Surrounding Temperature : 25 °C ± 5 °C
2) Warm-up time: About 5 Min
3) Surrounding Humidity : 20 % ~ 80 %
4) Before White balance adjustment, Keep power on
status, don’t power off
4.2.2. Adj. condition and cautionary items
(1) Lighting condition in surrounding area surrounding lighting
should be lower 10 lux., Try to isolate adj. area into dark
surrounding
(2) Probe location: Color Analyzer (CA-210) probe should be
within 10 cm and perpendicular of the module surface
(80°~ 100°)
(3) Aging time
1) After Aging Start, Keep the Power ON status during 5
Minutes.
2) In case of LCD, Back-light on should be checked using
no signal or Full-white pattern.
4.2.3. Equipment
(1) Color Analyzer
: CA-210 (NCG: CH 9 / WCG: CH12 / LED: CH14)
(2) Adjustment Computer(During auto adj., RS-232C protocol
is needed)
(3) Adjustment Remote control
(4) Video Signal Generator MSPG-925F 720p/204-Gray
(Model: 217, Pattern: 49)
→ Only when internal pattern is not available
▪ Color Analyzer Matrix should be calibrated using CS-1000.
4.2.4. Equipment connection MAP
4.2.5. Adj. Command (Protocol)
<Command Format>
- LEN: Number of Data Byte to be sent
- CMD: Command
- VAL: FOS Data value
- CS: Checksum of sent data
- A: Acknowledge
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX]
▪ RS-232C Command used during auto-adjustment.
Ex) wb 00 00 → Begin white balance auto-adj.
wb 00 10 → Gain adj.
ja 00 ff → Adj. data
jb 00 c0
...
...
wb 00 1f → Gain adj. completed
*(wb 00 20(Start), wb 00 2f(end)) → Off-set adj.
wb 00 ff → End white balance auto-adj.
▪ Adj. Map
Applied Model : LB51H Chassis ALL MODELS
4.2.5. Adj. method
(1) Auto adj. method
1) Set TV in adj. mode using P-Only key(or POWER ON key)
2) Place optical probe on the center of the display
- It need to check probe condition of zero calibration
before adjustment.
3) Connect RS-232C Cable.
4) Select mode in adj. Program and begin a adjustment.
5) When adj. is complete (OK Sign), check adj. status pre
mode. (Cool, Medium, Warm)
6) Remove probe and RS-232C cable to complete adj.
▪ W/B Adj. must begin as start command “wb 00 00” , and
finish as end command “wb 00 ff”, and Adj. offset if need.
START 6E A 50 A LEN A 03 A CMD A 00 A VAL A CS STOP
Color Analyzer
Computer
* Pattern Generator
RS-232C
USB to RS-232C RS-232C
Probe
Signal Source
* If TV internal pattern is used, not needed
RS-232C COMMAND
[CMD ID DATA] Explanation
wb 00 00 Begin White Balance adjustment
wb 00 10 Gain adjustment(internal white pattern)
wb 00 1f Gain adjustment completed
wb 00 20 Offset adjustment(internal white pattern)
wb 00 2f Offset adjustment completed
wb 00 ff End White Balance adjustment
(internal pattern disappears )
Adj. item Command
(lower caseASCII)
Data Range
(Hex.)
Default
(Decimal)
CMD1 CMD2 MIN MAX
Cool
R Gain j g 00 C0 172
G Gain j h 00 C0 172
B Gain j i 00 C0 192
R Cut 64
G Cut 64
B Cut 64
Medium
R Gain j a 00 C0 192
G Gain j b 00 C0 192
B Gain j c 00 C0 192
R Cut 64
G Cut 64
B Cut 64
Warm
R Gain j d 00 C0 192
G Gain j e 00 C0 160
B Gain j f 00 C0 128
R Cut 64
G Cut 64
B Gain 64

- 16 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
(2) Manual adjustment. method
1) Set TV in Adj. mode using POWER On.
2) Zero Calibrate the probe of Color Analyzer, then place it
on the center of LCD module within 10 cm of the surface.
3) Press ADJ key → EZ adjust using adj. R/C → 11. White-
Balance then press the cursor to the right(key ►).
(When right key(►) is pressed 204 Gray internal pattern
will be displayed)
4) Adjust Cool modes
i) Fix the one of R/G/B gain to 192 (default data) and
decrease the others. (If G gain is adjusted over 172
and R and B gain less than 192 , Adjust is O.K.)
ii) If G gain is adjusted over 172, Increase G gain by up
to 172, and then increase R gain and G gain same
amount of increasing G gain.
iii) If R gain or B gain is over 255, Readjust G gain less
than 172, Conform to R gain is 255 or B gain is 255.
5) Adjust two modes (Medium/Warm) Fix the one of R/G/B
gain to 192 (default data) and decrease the others.
6) Adj. is completed, Exit adjust mode using “EXIT” key on
Remote control.
▪ Adjustment condition and cautionary items
1) Lighting condition in surrounding area
Surrounding lighting should be lower 10 lux. Try to
isolate adj. area into dark surrounding.
2) Probe location
: Color Analyzer(CA-210) probe should be within 10 cm
and perpendicular of the module surface (80° ~ 100°)
4.2.6. Reference (White balance Adj. coordinate and
color temperature)
▪ Luminance : 204 Gray
▪ Standard color coordinate and temperature using CS-1000
(over 26 inch)
▪ Standard color coordinate and temperature using CA-210(CH 14)
4.2.7. LED White balance table
- EDGE LED module change color coordinate because of
aging time.
- Apply under the color coordinate table, for compensated
aging time.
Only march to December & Global
Model: (normal line)LGD (LF5xxx, LF6xxx, LF7xxx, LF8xxx)
Only January to Febuary & Global
Model: (normal line)LGD (LF5xxx, LF6xxx, LF7xxx, LF8xxx)
OS Module(AUO, INX, Sharp, CSOT, BOE) (Cool : 13000 K)
Mode Coordinate Temp ∆uv
x y
Cool 0.271 0.270 13000 K 0.0000
Medium 0.286 0.289 9300 K 0.0000
Warm 0.313 0.329 6500 K 0.0000
Mode Coordinate Temp ∆uv
x y
Cool 0.271 ± 0.002 0.270 ± 0.002 13000 K 0.0000
Medium 0.286 ± 0.002 0.289 ± 0.002 9300 K 0.0000
Warm 0.313 ± 0.002 0.329 ± 0.002 6500K 0.0000
NC4.0
Aging
time
(Min)
Cool Medium Warm
x y x y x y
271 270 286 289 313 329
1 0-2 282 289 297 308 324 348
2 3-5 281 287 296 306 323 346
3 6-9 279 284 294 303 321 333
4 10-19 277 280 292 299 319 339
5 20-35 275 277 290 296 317 336
6 36-49 274 274 289 293 316 333
7 50-79 273 272 288 291 315 331
8 80-119 272 271 287 290 314 330
9 Over 120 271 270 286 289 313 329
NC4.0
Aging
time
(Min)
Cool Medium Warm
x y x y x y
271 270 286 289 313 329
1 0-5 286 295 301 314 328 354
2 6-10 284 290 299 309 326 349
3 11-20 282 287 297 306 324 346
4 21-30 279 283 294 302 321 342
5 31-40 276 278 291 297 318 337
6 41-50 274 275 289 294 316 334
7 51-80 273 272 288 291 315 331
8 81-119 272 271 287 290 314 330
9 Over 120 271 270 286 289 313 329
NC4.0 Cool Medium Warm
x y x y x y
spec 271 270 286 289 313 329
target 278 280 293 299 320 339

- 17 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
4.3. Magic Motion Remote control test
- Results are automatically marked in Instart OSD after
through the AP/Magic Remocon Equipment on the line.
4.4. 3D function test(Except Non-3D product)
(Pattern Generator MSHG-600, MSPG-6100[Support HDMI1.4])
* HDMI mode NO. 872 , pattern No.83
(1) Please input 3D test pattern like below.
(2) When 3D OSD appear automatically, then select green key.
(3) Don't wear a 3D Glasses, check the picture like below.
4.5. HDMI ARC Function Inspection
(1) Test equipment
- Optic Receiver Speaker
- MSHG-600 (SW: 1220 ↑)
- HDMI Cable (for 1.4 version)
(2) Test method
1) Insert the HDMI Cable to the HDMI ARC port from the
master equipment (HDMI2)
2) Check the sound from the TV Set
3) Check the Sound from the Speaker or using AV & Optic
TEST program (It’s connected to MSHG-600)
* Remark: Inspect in Power Only Mode and check SW
version in a master equipment

- 18 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
4.6. EYE-Q Green Function Inspection
Step 1) Turn on the TV.
Step 2) Press 'EYE button' on the adjustment remote-control.
Step 3) Cover 'Eye Q sensor' on the front of set with your
hands, hold it for 6 seconds.
Step 4) Check "the Sensor Data" on the screen, make certain
that Data is below 10. If Data isn’t below 10 in 6
seconds, Eye Q sensor would be bad. You should
change Eye Q sensor.
Step 5) Uncover your hands from Eye Q sensor, hold it for 6
seconds.
Step 6) Check "Back Light(xxx)" on the screen, check data
increase .You should change Eye Q sensor.
4.7. Wi-Fi Test
Step 1) Turn on TV
Step 2) Select Wi-Fi Connection option in Network Menu.
Step 3) Click Off Button to On in Wi-Fi Connection.
Step 4) The system finds any AP like blow PIC.
Step 5) Select the AP you want to connect.
4.8. LNB voltage and 22KHz tone check
(only for DVB-S/S2 model)
▪ Test method
(1) Set TV in Adj. mode using POWER ON.
(2) Connect cable between satellite ANT and test JIG.
(3) Press Yellow key(ETC+SWAP) in Adj Remote control to
make LNB on.
(4) Check LED light ‘ON’ at 18 V menu.
(5) Check LED light ‘ON’ at 22 KHz tone menu.
(6) Press Blue key(ETC+PIP INPUT) in Adj Remote control
to make LNB off.
(7) Check LED light ‘OFF’ at 18 V menu.
(8) Check LED light ‘OFF’ at 22 KHz tone menu.
▪ Test result
(1) After press LNB On key, ‘18 V LED’ and ‘22 KHz tone
LED’ should be ON.
(2) After press LNB OFF key, ‘18 V LED’ and ‘22 KHz tone
LED’ should be OFF.
4.9. Option selection per country
4.9.1. Overview
- Option selection is only done for models in Non-EU
4.9.2. Method
(1) Press ADJ key on the Adj. R/C, then select Country Group
Meun.
(2) Select Country Group Code 04 or Country Group EU.

- 19 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5. Tool Option selection
▪ Method : Press "ADJ" key on the Adjustment remote control,
then select Tool option.
6. Ship-out mode check(In-stop)
▪ After final inspection, press "IN-STOP" key of the Adjustment
remote control and check that the unit goes to Stand-by
mode.
7. GND and Internal Pressure check
7.1. Method
(1) GND & Internal Pressure auto-check preparation
- Check that Power cord is fully inserted to the SET.
(If loose, re-insert)
(2) Perform GND & Internal Pressure auto-check
- Unit fully inserted Power cord, Antenna cable and A/V
arrive to the auto-check process.
- Connect D-terminal to AV JACK TESTER
- Auto CONTROLLER(GWS103-4) ON
- Perform GND TEST
- If NG, Buzzer will sound to inform the operator.
- If OK, changeover to I/P check automatically.
(Remove CORD, A/V form AV JACK BOX.)
- Perform I/P test
- If NG, Buzzer will sound to inform the operator.
- If OK, Good lamp will lit up and the stopper will allow the
pallet to move on to next process.
7.2. Checkpoint
▪ TEST voltage
(1) DQA Test
- GND: 1.5 KV / min at 100 mA
- SIGNAL: 3 KV / min at 100 mA
(2) Mass Production Line Test
- GND: AC 1.5 KV / sec, Cut off current not exceed 100 mA
▪ TEST time: DQA 1 min, Mass Production Line 1 sec
▪ TEST POINT
- GND TEST = POWER CORD GND & SIGNAL CABLE
METAL GND
- Internal Pressure TEST = POWER CORD GND & LIVE &
NEUTRAL
▪ LEAKAGE CURRENT: At 0.5 mArms
8. Audio
Measurement condition:
(1) RF input: Mono, 1 KHz sine wave signal, 100 % Modulation
(2) CVBS, Component: 1 KHz sine wave signal 0.5 Vrms
9. USB S/W Download(Service only)
(1) Put the USB Stick to the USB socket.
(2) Go to General menu then enter to About This TV.
(3) Enter the USB EXPERT MODE.
(4) Updating is starting.
(5) Updating completed, the TV will restart automatically
(6) If your TV is turned on, check your updated version and
Tool option. (explain the Tool option, next stage)
* If downloading version is more high than your TV have,
TV can lost all channel data. In this case, you have to
channel recover. if all channel data is cleared, you didn’t
have a DTV/ATV test on production line.
* After downloading, have to adjust Tool Option again.
(1) Push "IN-START" key in service remote control.
(2) Select "Tool Option 1" and push "OK" key.
(3) Punch in the number. (Each model has their number)
No. Item Min Typ Max Unit Remark
1.
Audio practical
max Output, L/R
(Distortion=10%
max Output)
9 10 12 W
EQ Off
AVL Off
Clear Voice Off
8.10 10.8 Vrms
2. Speaker (8Ω
Impedance) 9 10 12 W

- 20 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
DISASSEMBLY
■ The method to disassemble IR PCBA
1.
2 latches (both sides of IR PCBA)
2.
After bending latches, push IR PCBA toward upper side.
3.
Disassemble cable from IR PCBA