LG 55LM8600 User manual

Printed in KoreaP/NO : MFL67365301 (1203-REV00)
CHASSIS : LB23E
MODEL : 55LM8600 55LM8600-TA
55LM860Y 55LM860Y-TA
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
LED LCD 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 ....................................................................................... 5
ADJUSTMENT INSTRUCTION .............................................................. 13
EXPLODED VIEW .................................................................................. 20
SCHEMATIC CIRCUIT DIAGRAM ..............................................................

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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 MΩ and 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 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 mod-
ule 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 discharging
wrist strap device, which should be removed to prevent poten-
tial 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 solder
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 electri-
cally 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 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 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 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 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 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 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 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 LCD TV used LB23E
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 5 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)
DTV & Analog
* DTV Region: Australia/ NewZealand(AU),
Singapore(SG), Indonesia(ID), Malaysia(MY),
Vietnam(VN), South Africa(ZA), Iran(IR), Israel(IL)
2 Broadcasting system Digital : DVB-T
Analog : PAL-BG, DK, I/I’, SECAM-DK/BG/I ▪ Australia/India : only PAL
3 Receiving system Digital : COFDM, QAM
Analog : Upper Heterodyne
▪ 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
5 Video Input RCA(2EA) PAL, SECAM, NTSC 4 System : PAL, SECAM, NTSC, PAL60
Rear 1EA, AV gender jack 1EA
6 Component Input (2EA) Y/Cb/Cr, Y/Pb/Pr Rear gender (1EA)
7 RGB Input (1EA) RGB-PC Analog(D-SUB 15PIN)
Rear gender(1EA)
8 HDMI Input (4EA)
PC(HDMI version 1.3) / DTV format,
Support HDCP
HDMI1-ARC, HDMI2, HDMI3, HDMI4-MHL
Side
9 Audio Input (3EA) RGB/DVI Audio Component, AV L/R Input ; Rear (Phone)
Component and av use same jack ; Rear (Gender)
10 SPDIF out(1EA) Optical Audio out Rear (1EA)
11 USB Input(3EA) EMF, DivX HD, For SVC (download) Side JPEG, MP3, DivX HD

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Only for training and service purposes
5. Component Video Input (Y,
Cb/Pb, Cr/Pr)
6. RGB (PC)
No. Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Proposed
1. 720*480i 15.73 59.94 13.500 SDTV, DVD 480I(525I)
2 720*480i 15.73 60.00 13.514 SDTV, DVD 480I(525I)
3. 720*576i 15.625 50.00 13.500 SDTV, DVD 576I(625I) 50Hz
4 720*480p 31.47 59.94 27.000 SDTV 480P
5 720*480p 31.50 60.00 27.027 SDTV 480P
6 720*576p 31.25 50.00 27.000 SDTV 576P 50Hz
7 1280*720 44.96 59.94 74.176 HDTV 720P
8 1280*720 45.00 60.00 74.250 HDTV 720P
9 1280*720 37.50 50.00 74.25 HDTV 720P 50Hz
10 1920*1080 28.125 50.00 74.250 HDTV 1080I 50Hz
11 1920*1080 33.72 59.94 74.176 HDTV 1080I
12 1920*1080 33.75 60.00 74.25 HDTV 1080I
13 1920*1080 26.97 23.976 63.296 HDTV 1080P
14 1920*1080 27.00 24.000 63.36 HDTV 1080P
15 1920*1080 33.71 29.97 79.120 HDTV 1080P
16 1920*1080 33.75 30.00 79.20 HDTV 1080P
17 1920*1080 56.25 50 148.5 HDTV 1080P
18 1920*1080 67.432 59.94 148.350 HDTV 1080P
19 1920*1080 67.5 60.00 148.5 HDTV 1080P
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remarks
1. 640*350 31.468 70.09 25.17 EGA
2 720*400 31.469 70.09 28.32 DOS
3. 640*480 31.469 59.94 25.17 VESA(VGA)
4 800*600 37.879 60.317 40 VESA(SVGA)
5 1024*768 48.363 60.004 65 VESA(XGA)
6 1152*864 54.348 60.053 80 VESA
7 1360*768 47.712 60.015 84.5 VESA(WXGA)
8 1920*1080 66.5 60.00 148.5 WUXGA(CEA 861D) Only FHD Model

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Only for training and service purposes
7.2. PC Mode
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remarks
1 720*400 31.469 70.09 28.32 DOS
2 640*480 31.469 59.94 25.17 VESA(VGA)
3 800*600 37.879 60.317 40 VESA(SVGA)
4 1024*768 48.363 60.004 65 VESA(XGA)
5 1360*768 47.712 60.015 84.75 VESA(WXGA)
6 1152*864 54.348 60.053 80 VESA
7 1280*1024 63.981 60.02 109.00 SXGA Only FHD Model (Support
to HDMI-PC)
8 1920*1080 67.5 60 158.40 WUXGA(Reduced Blanking) Only FHD Model
7. HDMI Input
7.1. DTV Mode
No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed Remarks
1 720*480 15.73 59.94 13.500 SDTV, DVD 480I(525I)
Spec. out but
display.
2 720*480 15.75 60.00 13.514 SDTV, DVD 480I(525I)
3 720*576 15.625 50.00 13.500 SDTV, DVD 576I(625I) 50Hz
4 720*480 31.47 59.94 27 SDTV 480P
5 720*480 31.5 60.00 27.027 SDTV 480P
6 720*576 31.25 50.00 27 SDTV 576P
7 1280*720 44.96 59.94 74.176 HDTV 720P
8 1280*720 45 60.00 74.25 HDTV 720P
9 1280*720 37.5 50.00 74.25 HDTV 720P
10 1920*1080 28.125 50.00 74.25 HDTV 1080I
11 1920*1080 33.72 59.94 74.176 HDTV 1080I
12 1920*1080 33.75 60.00 74.25 HDTV 1080I
13 1920*1080 26.97 23.976 63.296 HDTV 1080P
14 1920*1080 27.00 24.000 63.36 HDTV 1080P
15 1920*1080 33.71 29.97 79.120 HDTV 1080P
16 1920*1080 33.75 30.00 79.20 HDTV 1080P
17 1920*1080 56.25 50.00 148.5 HDTV 1080P
18 1920*1080 67.432 59.94 148.350 HDTV 1080P
19 1920*1080 67.5 60.00 148.5 HDTV 1080P

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Only for training and service purposes
9. HDMI Input
9.1. HDMI 1.3 (3D Supported mode manually)
No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) 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, Single Frame Sequential
2 1280*720 37.500 50 74.25 HDTV 720P 2D to 3D, Side by Side(half),
Top & Bottom, Single Frame Sequential
3 1920*1080 33.75 60.00 74.25 HDTV 1080I 2D to 3D, Side by Side(half), Top & Bottom
4 1920*1080 28.125 50.00 74.25 HDTV 1080I 2D to 3D, Side by Side(half), Top & Bottom
5 1920*1080 27.00 24.00 74.25 HDTV 1080P 2D to 3D, Side by Side(half),
Top & Bottom, Checkerboard
6 1920*1080 28.12 25.00 74.25 HDTV 1080P 2D to 3D, Side by Side(half),
Top & Bottom, Checkerboard
7 1920*1080 33.75 30.00 74.25 HDTV 1080P 2D to 3D, Side by Side(half),
Top & Bottom, Checkerboard
8 1920*1080 67.50 60.00 148.5 HDTV 1080P
2D to 3D, Side by Side(half),
Top & Bottom, Checkerboard,
Single Frame Sequential,
Row Interleaving, Column Interleaving
9 1920*1080 56.250 50.00 148.5 HDTV 1080P
2D to 3D, Side by Side(half),
Top & Bottom, Checkerboard,
Single Frame Sequential,
Row Interleaving, Column Interleaving
8. RF Input_3D Mode
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remarks
1 1280*720 37.500 50 74.25 HDTV 720P Side by Side, Top & Bottom
2 1920*1080 28.125 50 74.25 HDTV 1080I Side by Side, Top & Bottom

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Only for training and service purposes
9.2. HDMI 1.4b (3D Supported mode automatically)
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
Frame packing,
Line alternative
Side-by-side(Full)
Top-and-Bottom
Side-by-side(half)
Secondary(SDTV 480P)
(SDTV 480P)
(SDTV 480P)
Secondary(SDTV 480P)
Secondary(SDTV 480P)
2 720*480 31.469 / 31.5 59.94 / 60 27.00 / 27.03 2,3
Frame packing,
Line alternative
Side-by-side(Full)
Top-and-Bottom
Side-by-side(half)
Secondary(SDTV 480P)
(SDTV 480P)
(SDTV 480P)
Secondary(SDTV 480P)
Secondary(SDTV 480P)
3 720*576 31.25 50 27 17,18
Frame packing,
Line alternative
Side-by-side(Full)
Top-and-Bottom
Side-by-side(half)
Secondary(SDTV 480P)
(SDTV 480P)
(SDTV 480P)
Secondary(SDTV 480P)
Secondary(SDTV 480P)
4 720*576 15.625 50 27 21
Frame packing
Field alternative
Side-by-side(Full)
Top-and-Bottom
Side-by-side(half)
Secondary(SDTV 576I)
(SDTV 576I
(SDTV 576I
Secondary(SDTV 576I)
Secondary(SDTV 576I)
5 1280*720 37.500 50 74.25 19 Top-and-Bottom
Side-by-side(half)
Primary(HDTV 720P)
Primary(HDTV 720P)
6 1280*720 75 50 148.5 19
Frame packing
Line alternative
Side-by-side(Full)
Primary(HDTV 720P)
(HDTV 720P)
(HDTV 720P)
7 1280*720 44.96 / 45 59.94 / 60 74.17/74.25 4 Top-and-Bottom
Side-by-side(half)
Primary(HDTV 720P)
Primary(HDTV 720P)
8 1280*720 90 59.94 / 60 148.5 4
Frame packing
Line alternative
Side-by-side(Full)
Primary(HDTV 720P)
(HDTV 720P)
(HDTV 720P)
9 1920*1080 33.72 / 33.75 59.94 / 60 74.17/74.25 5 Top-and-Bottom
Side-by-side(half)
Secondary(HDTV 1080I)
Primary(HDTV 1080I)
10 1920*1080 67.50 59.94 / 60 148.5 5
Frame packing
Field alternative
Side-by-side(Full)
Primary(HDTV 1080I)
(HDTV 1080I)
(HDTV 1080I)
11 1920*1080 28.125 50.00 74.25 20 Top-and-Bottom
Side-by-side(half)
Secondary(HDTV 1080I)
Primary(HDTV 1080I)
12 1920*1080 56.25 50.00 148.5 20
Frame packing
Field alternative
Side-by-side(Full)
Primary(HDTV 1080I)
(HDTV 1080I)
(HDTV 1080I)
13 1920*1080 26.97 / 27 23.97 / 24 74.17/74.25 32 Top-and-Bottom
Side-by-side(half)
Primary(HDTV 1080P)
Primary(HDTV 1080P)
14 1920*1080 26.97 / 27 23.97 / 24 148.5 32 Frame packing
Line alternative
Primary(HDTV 1080P)
(HDTV 1080P)
(HDTV 1080P)
15 1920*1080 28.12 25 74.17/74.25 33 Top-and-Bottom
Side-by-side(half)
Secondary(HDTV 1080P)
Secondary(HDTV 1080P)
16 1920*1080 28.12 25 148.5 33
Frame packing
Line alternative
Side-by-side(Full)
Secondary(HDTV 1080P)
(HDTV 1080P)
(HDTV 1080P)
17 1920*1080 33.716 / 33.75 29.976 / 30.00 74.25 34 Top-and-Bottom
Side-by-side(half)
(HDTV 1080P)
Secondary(HDTV 1080P)
18 1920*1080 33.716 / 33.75 29.976 / 30.00 148.5 34
Frame packing
Line alternative
Side-by-side(Full)
(HDTV 1080P)
(HDTV 1080P)
(HDTV 1080P)
19 1920*1080 56.250 50 148.5 31 Top-and-Bottom
Side-by-side(half)
Primary(HDTV 1080P)
Secondary(HDTV 1080P)
20 1920*1080 67.43 / 67.5 59.94 / 60 148.35/148.50 16 Top-and-Bottom
Side-by-side(half)
Primary(HDTV 1080P)
Secondary(HDTV 1080P)

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Only for training and service purposes
9.3. HDMI-PC Input (3D) (3D Supported mode manually)
No. Resolution H-freq(kHz) V-freq.(kHz) 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 2D to 3D, Side by Side(half)
Top & Bottom HDTV 768P
3 1920*1080 67.500 60 148.50
2D to 3D, Side by Side(half)
Top & Bottom, Checker Board,
Single Frame Sequential
HDTV 1080P
4 Others - - - 2D to 3D
640*350
720*400
640*480
800*600
1152*864
9.4. RGB-PC Input(3D) (3D Supported mode manually)
No. Resolution H-freq(kHz) V-freq.(kHz) 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 2D to 3D, Side by Side(half)
Top & Bottom HDTV 768P
3 1920*1080 67.500 60 148.50 2D to 3D, Side by Side(half)
Top & Bottom HDTV 1080P
4 Others - - - 2D to 3D
640*350
720*400
640*480
800*600
1152*864
1280*1024
9.5. Component Input (3D) (3D Supported mode manually)
No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) 3D input proposed mode Proposed
1 1280*720 37.5 50 74.25 2D to 3D, Side by Side(half), Top & Bottom HDTV 720P
2 1280*720 45.00 60.00 74.25 2D to 3D, Side by Side(half), Top & Bottom HDTV 720P
3 1280*720 44.96 59.94 74.176 2D to 3D, Side by Side(half), Top & Bottom HDTV 720P
4 1920*1080 33.75 60.00 74.25 2D to 3D, Side by Side(half), Top & Bottom HDTV 1080I
5 1920*1080 33.72 59.94 74.176 2D to 3D, Side by Side(half), Top & Bottom HDTV 1080I
6 1920*1080 28.12 50 74.25 2D to 3D, Side by Side(half), Top & Bottom HDTV 1080I
7 1920*1080 67.500 60 148.50 2D to 3D, Side by Side(half), Top & Bottom HDTV 1080P
8 1920*1080 67.432 59.94 148.352 2D to 3D, Side by Side(half), Top & Bottom HDTV 1080P
9 1920*1080 27.000 24.000 74.25 2D to 3D, Side by Side(half), Top & Bottom HDTV 1080P
10 1920*1080 28.12 25 74.25 2D to 3D, Side by Side(half), Top & Bottom HDTV 1080P
11 1920*1080 56.25 50 74.25 2D to 3D, Side by Side(half), Top & Bottom HDTV 1080P
12 1920*1080 26.97 23.976 74.176 2D to 3D, Side by Side(half), Top & Bottom HDTV 1080P
13 1920*1080 33.75 30.000 74.25 2D to 3D, Side by Side(half), Top & Bottom HDTV 1080P
14 1920*1080 33.71 29.97 74.176 2D to 3D, Side by Side(half), Top & Bottom HDTV 1080P

- 12 - 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(MHz) 3D input proposed mode Proposed
1 1920*1080 33.75 30 74.25
2D to 3D
Side by Side(Half)*,
Top & Bottom*,
Checkerboard*
Row Interleaving,
Column Interleaving
(Photo : side by Side(half), Top & Bottom)
HDTV 1080P
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 3D input proposed mode Proposed
1 1920*1080 33.75 30 74.25
2D to 3D
Side by Side(Half)*,
Top & Bottom*,
Checkerboard*
Row Interleaving,
Column Interleaving
(Photo : side by Side(half), Top & Bottom)
HDTV 1080P
9.6. USB Input (3D) (3D Supported mode manually)
(“*” 3D supported mode manually & automatically)
9.7. DLNA Input (3D) (3D Supported mode manually)
(“*” 3D supported mode manually & automatically)
■ Remark: 3D Input mode
No. Side by Side Top & Bottom Checker board Single Frame
Sequential Frame Packing Line Interleaving
Column
Interleaving
1
R
L
R
LLLLL
L
R
L

- 13 - 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 LCD TV
with LB23E 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. ADC Adjustment
3.1.1. Overview
ADC adjustment is needed to find the optimum black level
and gain in Analog-to-Digital device and to compensate RGB
deviation.
3.1.2. Equipment & Condition
(1) USB to RS-232C Jig
(2) MSPG-925 Series Pattern Generator(MSPG-925FA,
pattern - 65)
- Resolution : 480i Comp1
1080P Comp1
1920*1080 RGB
- Pattern : Horizontal 100% Color Bar Pattern
- Pattern level : 0.7 ± 0.1 Vp-p
- Image
3.1.3. Adjustment
(1) Adjustment method
- Using RS-232, adjust items in the other shown in
"3.1.3.3)"
(2) Adj. protocol
Ref.) ADC Adj. RS232C Protocol_Ver1.0
(3) Adj. order
- aa 00 00 [Enter ADC adj. mode]
- xb 00 04 [Change input source to Component1 (480i&
1080p)]
- ad 00 10 [Adjust 480i&1080p Comp1]
- xb 00 06 [Change input source to RGB(1024*768)]
- ad 00 10 [Adjust 1920*1080 RGB]
- ad 00 90 End adj.
3.2. MAC address D/L , Widevine key D/L
Connect: PCBA Jig → RS-232C Port== PC → RS-232C Port
Communication Prot connection
▪ Com 1,2,3,4 and 115200(Baudrate)
Mode check: Online Only
▪ Check the test process: DETECT → MAC → Widevine
▪ Play: START
▪ Result: Ready, Test, OK or NG
▪ Printer Out (MAC Address Label)
Protocol Command Set ACK
Enter adj. mode aa 00 00 a 00 OK00x
Source change
xb 00 04 b 00 OK04x (Adjust 480i, 1080p Comp1 )
xb 00 06 b 00 OK06x (Adjust 1920*1080 RGB)
Begin adj. ad 00 10
Return adj. result OKx (Case of Success)
NGx (Case of Fail)
Read adj. data
(main)
ad 00 20
(main)
000000000000000000000000007c007b006dx
(sub ) (Sub)
000000070000000000000000007c00830077x
ad 00 21
Conrm adj. ad 00 99
NG 03 00x (Fail)
NG 03 01x (Fail)
NG 03 02x (Fail)
OK 03 03x (Success)
End adj. aa 00 90 a 00 OK90x

- 14 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
3.3. LAN
3.3.1. Equipment & Condition
▪ Each other connection to LAN Port of IP Hub and Jig
3.3.2. 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.
3.3.3. WIDEVINE key Inspection
- Confirm key input data at the "IN START" MENU Mode.
3.4. LAN PORT INSPECTION(PING TEST)
Connect SET -> LAN port == PC -> LAN Port
3.4.1. 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
3.4.2. 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.
3.5. Model name & Serial number Download
3.5.1. Model name & Serial number D/L
- Press "Power on" key of service remote control.
(Baud rate : 115200 bps)
- Connect RS232 Signal to USB Cable to USB.
- Write Serial number by use USB port.
- Must check the serial number at Instart menu.
3.5.2. 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 "6.Model Number D/L" like below photo.
3) Input the Factory model name(ex 55LM8600-TA) or Serial
number like photo.
4) Check the model name Instart menu. -> Factory name
displayed. (ex 55LM8600-TA)
5) Check the Diagnostics.(DTV country only) -> Buyer model
displayed. (ex 55LM8600-TA)
SET PC

- 15 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
3.6. WIFI MAC ADDRESS CHECK
(1) Using RS232
(2) Check the menu on in-start.
4. Manual Adjustment
* ADC adjustment is not needed because of OTP(Auto ADC
adjustment)
4.1. EDID(The Extended Display Identification
Data)/DDC(Display Data Channel) download
4.1.1. Overview
It is a VESA regulation. A PC or a MNT will display an optimal
resolution through information sharing without any necessity
of user input. It is a realization of "Plug and Play".
4.1.2. Equipment
- Since embedded EDID data is used, EDID download JIG,
HDMI cable and D-sub cable are not need.
- Adjustment remote control
4.1.3. Download method
(1) Press "ADJ" key on the Adjustment remote control then
select "12.EDID D/L", By pressing "Enter" key, enter EDID
D/L menu.
(2) Select "Start" button by pressing "Enter" key, HDMI1/
HDMI2/ HDMI3/ HDMI4/ RGB are writing and display OK
or NG.
4.2.4. EDID DATA
▪ HDMI(FHD 3D, HDMI 1.4a, 3D)
▪ RGB
▪ Reference
- HDMI1 ~ HDMI4
- In the data of EDID, bellows may be different by Input mode.
* Physical Add & Checksum(HDMI1/2/3/4)
4.3. White Balance Adjustment
4.3.1. 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 %
H-freq(kHz) V-freq.(Hz)
Transmission [A][I][][Set ID][][20][Cr] [O][K][X] or [NG]
For Analog For HDMI EDID
D-sub to D-sub DVI-D to HDMI or HDMI to HDMI
0 1 2 3 4 5 6 7 8 9 A B C D E F
0 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01
10 01 16 01 03 80 00 5A 78 0A EE 91 A3 54 4C 99 26
20 0F 50 54 A1 08 00 31 40 45 40 61 40 71 40 81 80
30 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
40 45 00 A0 5A 00 00 00 1E 66 21 50 B0 51 00 1B 30
50 40 70 36 00 A0 5A 00 00 00 1E 00 00 00 FD 00 3A
60 3E 1E 53 10 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 00 5C
0 1 2 3 4 5 6 7 8 9 A B C D E F
0 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01
10 01 16 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26
20 0F 50 54 A1 08 00 31 40 45 40 61 40 71 40 81 80
30 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
40 45 00 A0 5A 00 00 00 1E 66 21 50 B0 51 00 1B 30
50 40 70 36 00 A0 5A 00 00 00 1E 00 00 00 FD 00 3A
60 3E 1E 53 10 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 43
80 02 03 37 F1 4E 10 9F 04 13 05 14 03 02 12 20 21
90 22 15 01 26 15 07 50 09 57 07 78 03 0C 00 XX XX
A0 B8 2D 20 C0 0E 01 4F 3F FC 08 10 18 10 06 10 16
B0 10 28 10 03 05 03 01 02 3A 80 18 71 38 2D 40 58
C0 2C 45 00 A0 5A 00 00 00 1E 01 1D 80 18 71 1C 16
D0 20 58 2C 25 00 A0 5A 00 00 00 9E 01 1D 00 72 51
E0 D0 1E 20 6E 28 55 00 A0 5A 00 00 00 1E 00 00 00
F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 XX
INPUT 9Eh/9Fh (Physical Addr) FFh (Checksum)
HDMI1 10 00 11
HDMI2 20 00 01
HDMI3 30 00 F1
HDMI4 40 00 E1

- 16 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
4.3.2. Equipment
(1) Color Analyzer: CA-210 (LED Module : CH 14)
(2) Adjustment Computer(During auto adj., RS-232C protocol
is needed)
(3) Adjustment Remote control
(4) Video Signal Generator MSPG-925F 720p/216-Gray
(Model: 217, Pattern: 78)
-> Only when internal pattern is not available
• Color Analyzer Matrix should be calibrated using CS-1000.
4.3.3. Equipment connection MAP
4.3.4. 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
4.3.5. Adj. method
(1) Auto adj. method
1) Set TV in adj. mode using POWER ON key.
2) Zero calibrate probe then place it on the center of the
Display.
3) Connect Cable.(RS-232C to USB)
4) Select mode in adj. Program and begin adj.
5) When adj. is complete (OK Sign), check adj. status pre
mode. (Warm, Medium, Cool)
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.
(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 → 7. White-
Balance then press the cursor to the right(key ►).
(When right key(►) is pressed 216 Gray internal pattern
will be displayed)
4) One of R Gain / G Gain / B Gain should be fixed at 192,
and the rest will be lowered to meet the desired value.
5) Adjustment is performed in COOL, MEDIUM, WARM 3
modes of color temperature.
▪ If internal pattern is not available, use RF input. In EZ Adj.
menu 7.White Balance, you can select one of 2 Test-
pattern: ON, OFF. Default is inner(ON). By selecting OFF,
you can adjust using RF signal in 216 Gray pattern.
Co lo r An alyzer
Co mp ut er
Pat tern Generat or
RS -2 32C
RS-2 32C
RS-2 32C
Probe
Signal Source
* If TV internal pattern is used, not needed
START 6E A 50 A LEN A 03 A CMD A 00 A VAL A CS STOP
RS-232C COMMAND
[CMD ID DATA] Explantion
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 case ASCII)
Data Range
(Hex.) Default
(Decimal)
CMD1 CMD2 MIN MAX
Cool
R Gain j g 00 C0
G Gain j h 00 C0
B Gain j i 00 C0
R Cut
G Cut
B Cut
Medium
R Gain j a 00 C0
G Gain j b 00 C0
B Gain j c 00 C0
R Cut
G Cut
B Cut
Warm
R Gain j d 00 C0
G Gain j e 00 C0
B Gain j f 00 C0
R Cut
G Cut

- 17 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
▪ 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°)
3) Aging time
- After Aging Start, Keep the Power ON status during 5
Minutes.
- In case of LCD, Back-light on should be checked
using no signal or Full-white pattern.
4.3.6. Reference(White balance adjusmtment
coordinate and color temperature)
▪ Luminance : 216 Gray
▪ Standard color coordinate and temperature using CS-1000
(over 26 inch)
▪ Standard color coordinate and temperature using CA-210(CH 14)
4.3.7. ALELF & EDGE & IOL LED White balance table
- EDGE LED module change color coordinate because of
aging time.
- Apply under the color coordinate table, for compensated
aging time.
- EDGE LED(LM8600-TA) - LGD Only
4.4. EYE-Q function check
(1) Turn on TV.
(2) Press EYE key of Adjustment remote control.
(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 light)". 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.
4.5. Local Dimming Function Check
Step 1) Turn on TV.
Step 2) At the Local Dimming mode, module Edge Backlight
moving right to left Back light of IOP module moving.
Step 3) Confirm the Local Dimming mode.
Step 4) Press "exit" key.
4.6. Magic Motion Remote control test
- Equipment : RF Remote control for test, IR-KEY-Code
Remote control for test
- You must confirm the battery power of RF-Remote control
before test(recommend that change the battery per every lot)
- Sequence (test)
1) If you select the "Start(Mute)" key on the Adjustment
remote control, you can pairing with the TV SET.
2) You can check the cursor on the TV Screen, when select
the "OK" key on the Adjustment remote control.
3) You must remove the pairing with the TV Set by select
"OK" key + "Mute" key on the Adjustment remote control
for 5 seconds.
Mode Coordinate Temp ∆uv
x y
Cool 0.269 0.273 13000 K 0.0000
Medium 0.285 0.293 9300 K 0.0000
Warm 0.313 0.329 6500 K 0.0000
Mode Coordinate Temp ∆uv
x y
Cool 0.269 ± 0.002 0.273 ± 0.002 13000 K 0.0000
Medium 0.285 ± 0.002 0.293 ± 0.002 9300 K 0.0000
Warm 0.313 ± 0.002 0.329 ± 0.002 6500 K 0.0000
GP3
Aging
time
(Min)
Cool Medium Warm
X y x y x y
269 273 285 293 313 329
1 0-2 279 288 295 308 319 338
2 3-5 278 286 294 306 318 336
3 6-9 277 285 293 305 317 335
4 10-19 276 283 292 303 316 333
5 20-35 274 280 290 300 314 330
6 36-49 272 277 288 297 312 327
7 50-79 271 275 287 295 311 325
8 80-149 270 274 286 294 310 324
9 Over 150 269 273 285 293 309 323

- 18 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
4.7. 3D function test
(Pattern Generator MSHG-600, MSPG-6100[Support HDMI1.4])
* HDMI mode NO. 872 , pattern No.83
1) Please input 3D test pattern like below. (HDMI mode No.
872 , pattern No.83)
2) When 3D OSD appear automatically, then select green key.
3) Don't wear a 3D Glasses, Check the picture like below.
4.8. Option selection per country
4.8.1. Overview
- Option selection is only done for models in NON-AU
4.8.2.Method
(1) Press "ADJ" key on the Adjustment remote control, then
select Country Group Menu.
(2) Depending on destination, select Country Group Code or
Country Group then on the lower.
4.9. Tool Option selection
- Method : Press "ADJ" key on the Adjustment remote control,
then select Tool option.
4.10. 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.
4.11. GND and Internal Pressure check
4.11.1. 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.
4.11.2. Checkpoint
▪ TEST voltage
- GND: 1.5 KV / min at 100 mA
- SIGNAL: 3 KV / min at 100 mA
▪ TEST time: 1 second
▪ 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
5. 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
(3) RGB PC: 1 KHz sine wave signal 0.7 Vrms
No. Item Min Typ Max Unit
1
Audio practical
max Output, L/R
(Distortion=10%
max Output)
10 12 W EQ Off
AVL Off
Clear Voice Off
8.10 10.8 Vrms
2Speaker (8Ω
Impedance) 10 12 W
EQ On
AVL On
Clear Voice On

- 19 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
6. USB S/W download(Service only)
(1) Put the USB Stick to the USB socket.
(2) Automatically detecting update file in USB Stick.
- If your downloaded program version in USB Stick is Low,
it didn't work. But your downloaded version is High, USB
data is automatically detecting.
(3) Show the message "Copying files from memory".
(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.)

- 20 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
A22
A2
A21
A5 A10 AG1
* Set + Stand * Stand Base + Body
AG2
900
300
301
200
400
700
710
540 521
530
800
810
541
910
560
410
570
120
510
501
500
580
310
LV1
123
122
Dual Play
320
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