LG 42LX320C User manual

Printed in KoreaP/NO : MFL68883401 (1504-REV00)
CHASSIS : LD5CB
MODEL : 42LX320C/330C
42LX320C/330C-ZA
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 ............................................................... 9
BLOCK DIAGRAM ................................................................................. 16
EXPLODED VIEW .................................................................................. 18
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 LD5CB
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 specification
4. Model General Specification
No. Item Specication Remarks
1 Market EU/CIS
(PAL Market-37 Countries)
DTV & Analog (Total 37 countries)
DTV (MPEG2/4, DVB-T) :37 countries
UK/Italy/Germany/France/Spain/Sweden/Finland/Netherlands/
Belgium/Luxemburg/ Greece/Denmark/Czech/Austria /Hun-
gary/Swiss/Croatia/TurkeyNorway/Slovenia/Poland/Ukraine/
Portugal/Ireland/Morocco/Latvia/Estonia/Lithania/Rumania/
Bulgaria/Russia/SlovakiaBosnia/Serbia/Albania/Kazakhstan/
Belarus
DTV (MPEG2/4, DVB-T2): 8 countries
UK/Denmark/Sweden/Finland/Norway/Ireland/Ukraine/Kaza-
khstan
DTV (MPEG2/4, DVB-C): 37 countries
UK/Italy/Germany/France/Spain/Sweden/Finland/Netherlands/
Belgium/Luxemburg/ Greece/Denmark/Czech/Austria /Hun-
gary/Swiss/Croatia/TurkeyNorway/Slovenia/Poland /Ukraine/
Portugal/Ireland/Morocco/Latvia/Estonia/Lithania/Rumania/
Bulgaria/Russia/SlovakiaBosnia/Serbia/Albania/Kazakhstan/
Belarus
DTV (MPEG2/4,DVB-S): 29 countries
Italy/Germany/France/Spain/Netherlands/ Belgium/Luxemburg/
Greece/Czech/Austria /Hungary/Swiss/Croatia/Turkey/Slove-
nia/Poland/Portugal/ Morocco/Latvia/Estonia/Lithania/Rumania/
Bulgaria/Russia/Slovakia/Bosnia/Serbia/Albania/Belarus
Supported satellite : 22 satellites
HISPASAT 1C/1D, ATLANTIC BIRD 2, NILESAT 101/102,
ATLANTIC BIRD 3, AMOS 2/3, THOR 5/6, IRIUS 4, EUTEL-
SAT-W3A, EUROBIRD 9A, EUTELSAT-W2A, HOTBIRD 6/8/9,
EUTELSAT-SESAT, ASTRA 1L/H/M/KR, ASTRA 3A/3B, BADR
4/6, ASTRA 2D, EUROBIRD 3, EUTELSAT-W7, HELLASSAT
2, EXPRESS AM1, TURKSAT 2A/3A, INTERSAT10

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Only for training and service purposes
No. Item Specication Remarks
2 Broadcasting system
Analogue TV
1) PAL-B/G/D/K/I
2) SECAM-B/G/D/K/I
SECAM L/L’
Digital TV
1) DVB-T
2) DVB-C
Satellite Digital TV
1) DVB-T/T2
2) DVB-C
3) DVB-S/S2
Analogue TV : (RF) VHF: E2 to E12, UHF : E21 to E69
(CATV) S1 to S20, HYPER: S21 to S47
Digital TV : VHF, UHF
Satellite TV : VHF, UHF,
C-Band, Ku-Band
3 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
- 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
- symbol rate
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
4 Scart Jack (1EA) PAL, SECAM Scart 1 Jack is Full scart and support RF-OUT(analog).
5Component & AV
Common port (1EA)
Video Input RCA (PAL, SECAM, NTSC) 4 System : PAL, SECAM, NTSC, PAL60
Component Input(Y/Cb/Cr, Y/Pb/Pr)
7 HDMI Input (2 EA) HDMI1/2-DTV Support HDCP
8 Audio Input (1EA) Component & AV Component & AV’s audio input is used by common port.
9 SDPIF out (1EA) SPDIF out
10 Earphone out (1EA)
Antenna, AV1, AV2,
Component,
HDMI1, HDMI2, USB
11 USB (1EA) EMF, DivX HD, For SVC (download) JPEG, MP3, DivX HD
12 DVB
DVB-T
CI : UK, Finland, Denmark, Norway, Sweden, Russia, Spain,
Ireland, Luxemburg, Belgium, Netherland
CI+ : France(Canal+), Italy(DGTVi)
DVB-C
CI : Switzerland, Austria, Slovenia, Hungary, Bulgaria
CI+ : Switzerland(UPC,Cablecom), Netherland(Ziggo),
Germany(KDG,CWB), Finland(labwise)
DVB-S CI + : Germany(Astra HD+)
13 Ethernet (1EA) Wired, DMP only Only UK T2 Model (UF67/LF57/LF56/LF54) : for MHEG

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5. Video resolutions (2D)
5.1. Component Input (Y, CB/PB, CR/PR)
No. Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Proposed
1720*576 15.625 50.00 13.5 SDTV ,DVD 576I
2720*480 15.73 60.00 13.5135 SDTV ,DVD 480I
3 720*480 15.73 59.94 13.50 SDTV ,DVD 480I
4 720*576 31.25 50.00 27.00 SDTV 576P
5 720*480 31.50 60.00 27.027 SDTV 480P
6 720*480 31.47 59.94 27.00 SDTV 480P
7 1280*720 37.50 50.00 74.25 HDTV 720P
8 1280*720 45.00 60.00 74.25 HDTV 720P
9 1280*720 44.96 59.94 74.176 HDTV 720P
10 1920*1080 28.125 50.00 74.25 HDTV 1080I
11 1920*1080 33.75 60.00 74.25 HDTV 1080I
12 1920*1080 33.72 59.94 74.176 HDTV 1080I
13 1920*1080 56.25 50.00 148.50 HDTV 1080P
14 1920*1080 67.50 60.00 148.50 HDTV 1080P
15 1920*1080 67.432 59.94 148.352 HDTV 1080P
16 1920*1080 27.00 24.00 74.25 HDTV 1080P
17 1920*1080 26.97 23.94 74.176 HDTV 1080P
18 1920*1080 33.75 30.00 74.25 HDTV 1080P
19 1920*1080 33.71 29.97 74.176 HDTV 1080P
5.2. HDMI Input(PC/DTV)
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark
PC(DVI) DDC
1 640*350 31.468 70.09 25.17 EGA X
2 720*400 31.469 70.08 28.32 DOS O
3 640*480 31.469 59.94 25.17 VESA(VGA) O
4 800*600 37.879 60.31 40.00 VESA(SVGA) O
5 1024*768 48.363 60.00 65.00 VESA(XGA) O
6 1152*864 54.348 60.053 80.00 VESA O
7 1360*768 47.712 60.015 85.50 VESA (WXGA) O
8 1280*1024 63.981 60.020 108.0 VESA (SXGA) O FHD only
9 1920*1080 67.50 60.00 148.5 HDTV 1080P O FHD only
DTV
1 720*480 31.469 59.94 27.00 SDTV 480P
2 720*480 31.50 60.00 27.027 SDTV 480P
3 720*576 31.250 50.00 27.00 SDTV 576P
4 1280*720 37.50 50.00 74.25 HDTV 720P
5 1280*720 45.00 60.00 74.25 HDTV 720P
6 1280*720 44.96 59.94 74.176 HDTV 720P
7 1920*1080 28.125 50.00 74.25 HDTV 1080I
8 1920*1080 33.75 60.00 74.25 HDTV 1080I
9 1920*1080 33.72 59.94 74.176 HDTV 1080I
10 1920*1080 56.250 50.00 148.50 HDTV 1080P
11 1920*1080 67.50 60.00 148.50 HDTV 1080P
12 1920*1080 67.432 59.94 148.35 HDTV 1080P
13 1920*1080 27.00 24.00 74.25 HDTV 1080P
14 1920*1080 26.973 23.976 74.175 HDTV 1080P
15 1920*1080 33.75 30.00 74.25 HDTV 1080P
16 1920*1080 33.716 29.976 74.175 HDTV 1080P

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Only for training and service purposes
ADJUSTMENT INSTRUCTION
1. Application Range
This specification sheet is applied to all of the LED TV with
LD5CB chassis.
2. Designation
(1) The adjustment is according to the order which is designated
and which must be followed, according to the plan which
can be changed only on agreeing.
(2) Power adjustment : Free Voltage.
(3) Magnetic Field Condition: Nil.
(4) Input signal Unit: Product Specification Standard.
(5) Reserve after operation : Above 5 Minutes (Heat Run)
Temperature : at 25 °C ± 5 °C
Relative humidity : 65 ± 10 %
Input voltage : 220 V, 60 Hz
(6) Adjustment equipments: Color Analyzer(CA-210 or CA-110),
DDC Adjustment Jig, Service remote control.
(7) Push the "IN STOP" key - For memory initialization.
3. Main PCB check process
▪ APC - After Manual-Insert, executing APC
* Boot file Download
(1) Execute ISP program "Mstar ISP Utility" and then click
"Config" tab.
(2) Set as below, and then click "Auto Detect" and check "OK"
message.
If "Error" is displayed, check connection between computer,
jig, and set.
(3) Click "Read" tab, and then load download file(XXXX.bin)
by clicking "Read".
(4) Click "Connect" tab. If "Can't" is displayed, check connection
between computer, jig, and set.
(5) Click "Auto" tab and set as below.
(6) Click "Run".
(7) After downloading, check "OK" message.
* USB DOWNLOAD
(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 in 5
seconds.
(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.
(1)
filexxx.bin
(4)
(5)
(6)
(7)...........OK
filexxx.bin
(2)
(3)
Please Check the Speed :
To use speed between
from 200KHz to 400KHz
Case1 : Software version up
1. After downloading S/W by USB , TV set will reboot
automatically.
2. Push “In-stop” key.
3. Push “Power on” key.
4. Function inspection
5. After function inspection, Push “In-stop” key.
Case2 : Function check at the assembly line
1. When TV set is entering on the assembly line, Push
“In-stop” key at rst.
2. Push “Power on” key for turning it on.
→ If you push “Power on” key, TV set will recover
channel information by itself.
3. After function inspection, Push “In-stop” key.

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Only for training and service purposes
* After downloading, have to adjust Tool Option again.
(1) Push "IN-START" key in service remote control.
(2) Select "Adjust Check" and push "OK" key.
(3) Punch in the number. (Each of model has their number)
(4) Completed selecting Tool option.
3.1. ADC Process(Optional)
* If ADC processes as OTP, There is no need to proceed
internal ADC.
(1) Enter Service Mode by pushing "ADJ" key,
(2) Enter Internal ADC mode by pushing "►" key at "9. ADC
Calibration".
<Caution> Using "P-ONLY" key of the Adjustment remote
control, power on TV.
* ADC Calibration Protocol (RS232)
Adjust Sequence
▪ aa 00 00 [Enter Adjust Mode]
▪ xb 00 40 [Component Input]
▪ ad 00 10 [Adjust 480i & 1080p Comp]
▪ aa 00 90 End Adjust mode
* Required equipment : Adjustment remote control.
3.2. EDID Download
▪ After enter Service Mode by pushing "ADJ" key.
▪ Enter EDID D/L menu.
▪ Enter "START" by pushing "OK" key.
<Caution> Never connect HDMI cable when EDID downloaded.
3.3. EDID data
(1) RGB
1) HD RGB EDID DATA
2) FHD RGB EDID DATA
(2) HDMI
1) HD HDMI EDID data (2D Model)
2) FHD HDMI EDID data (2D Model)
NO Item CMD 1 CMD 2 Data 0
Enter Adjust
MODE
Adjust
‘Mode In’ A A 0 0 When transfer the ‘Mode In’, Carry the command.
ADC adjust ADC
Adjust A D 1 0 Automatically adjustment (The use of a internal pattern)
0123456789ABCDEF
00 00 ff ff ff ff ff ff 00 1e 6d a b
10 c 01 03 68 a0 5a 78 0a ee 91 a3 54 4c 99 26
20 0f 50 54 a1 08 00 71 40 61 40 45 40 31 40 01 01
30 01 01 01 01 01 01 1b 21 50 a0 51 00 1e 30 48 88
40 35 00 40 84 00 00 00 1c 01 1d 00 72 51 d0 1e 20
50 6e 28 55 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 d
70 d 00 e
0123456789ABCDEF
00 00 FF FF FF FF FF FF 00 1E 6D a b
10 c 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 01 01
30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 40 84 63 00 00 1E 64 19 00 40 41 00 26 30
50 18 88 36 00 40 84 63 00 00 18 00 00 00 FD 00 3A
60 3E 1E 53 10 00 0A 20 20 20 20 20 20 d
70 d 01 e
80 02 03 22 F1 4E 10 1F 04 93 05 14 03 02 12 20 21
90 22 15 01 26 15 07 50 09 57 07 f
A0 f 01 1D 80 18 71 1C 16 20 58 2C 25 00 A0 5A 5A
B0 00 00 00 9E 01 1D 00 72 51 D0 1E 20 6E 28 55 00
C0 20 C2 31 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E
D0 96 00 A0 5A 00 00 00 18 02 3A 80 18 71 38 2D 40
E0 58 2C 45 00 A0 5A 00 00 00 1E 00 00 00 00 00 00
F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 e
0123456789ABCDEF
00 00 ff ff ff ff ff ff 00 1e 6d a b
10 c 01 03 68 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 d
70 d 00 e
0123456789ABCDEF
00 00 FF FF FF FF FF FF 00 1E 6D a b
10 c 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 d
70 d 01 e
80 02 03 22 F1 4E 10 9F 04 13 05 14 03 02 12 20 21
90 22 15 01 26 15 07 50 09 57 07 f
A0 f 01 1D 80 18 71 1C 16 20 58 2C 25 00 20 C2 5A
B0 31 00 00 9E 01 1D 00 72 51 D0 1E 20 6E 28 55 00
C0 20 C2 31 00 00 1E 02 3A 80 18 71 38 2D 40 58 2C
D0 45 00 A0 5A 00 00 00 1E 01 1D 00 BC 52 D0 1E 20
E0 B8 28 55 40 C4 8E 21 00 00 1E 00 00 00 00 00 00
F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 e

- 11 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
- Detail EDID Options are below
a. Product ID
b. Serial No: Controlled on production line.
c. Month, Year: Week : '01' -> '01', Year : '2014' -> '18' fix
d. Model Name(Hex):
cf) TV set’s model name in EDID data is below.
e. Checksum: Changeable by total EDID data.
Only 60"
f. Vendor Specific(HDMI)
- HD Model
- FHD Model
3.4. Function Check
- Check display and sound
■ Check Input and Signal items.
1) TV
2) AV (SCART / CVBS)
3) COMPONENT (480i)
4) HDMI
* Display and Sound check is executed by Remote control.
<Caution>
Not to push the INSTOP key after completion if the function
inspection.
4. Total Assembly line process
4.1. White Balance adjustment
▪ W/B Equipment condition
CA210 : LED -> CH14, Test signal: Inner pattern(80IRE)
▪ Above 5 minutes H/run in the inner pattern. (“power on” key
of adjust remote control)
▪ If it is executed W/B adjustment in 2~3 minutes H/run, it is
adjusted by Target data.
▪ Normal line(LGD/CMI, March ~ December for Gumi, Global)
▪ Normal line(LGD/CMI, January ~ February for Gumi, Apply
not Cinema Screen)
MODEL NAME HEX EDID Table DDC Function
HD/FHD Model 0001 01 00 Analog/Digital
Model name MODEL NAME(HEX)
LG TV 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 (LG TV)
EDID C/S data HD FHD
RGB HDMI RGB HDMI
Check sum
(Hex)
Block 0
A2
74
59
40
Block 1 5B (HDMI1) 25 (HDMI1)
4B (HDMI2) 15 (HDMI2)
INPUT Model name(HEX)_2D
HDMI1 67 03 0C 00 10 00 80 1E
HDMI2 67 03 0C 00 20 00 80 1E
EDID C/S data HD FHD
RGB HDMI RGB HDMI
Check sum
(Hex)
Block 0
-
-
59
40
Block 1 - DE (HDMI1)
- CE (HDMI2)
INPUT Model name(HEX)_2D
HDMI1 67 03 0C 00 10 00 80 1E
HDMI2 67 03 0C 00 20 00 80 1E
Mode Temp Coordinate spec Target Chassis
or Model
Color
Temperature
Cool 13,000K X=0.276 (±0.04)
Y=0.275 (±0.04)
X=0.278
Y=0.280
ALL Model
(LD5CB)
Medium 9,300K X=0.290 (±0.04)
Y=0.298 (±0.04)
X=0.293
Y=0.299
Warm 6,500K X=0.318 (±0.04)
Y=0.334 (±0.04)
X=0.320
Y=0.339
NC5.0 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 6-9 279 284 294 303 321 343
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
NC5.0 Aging time
(Min)
Cool Medium Warm
xyxyxy
271 270 286 289 313 329
1 0-2 286 295 301 314 328 354
2 3-5 284 290 299 309 326 349
3 6-9 282 287 297 306 324 346
4 10-19 279 283 294 302 321 342
5 20-35 276 278 291 297 318 337
6 36-49 274 275 289 294 316 334
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

- 12 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
▪ Aging chamber (LGD/CMI)
▪ Use only AUO/Sharp/CSOT (Cool temp Spec is 13000K)
▪ W/B information
* Connecting picture of the measuring instrument
(On Automatic control)
Inside PATTERN is used when W/B is controlled. Connect to
auto controller or push Adjustment R/C P-ONLY → Enter the
mode of White-Balance, the pattern will come out.
* Auto-control interface and directions
(1) Adjust in the place where the influx of light like floodlight
around is blocked. (illumination is less than 10 lux).
(2) Adhere closely the Color analyzer(CA210) to the module
less than 10 cm distance, keep it with the surface of the
Module and Color analyzer's prove vertically.(80° ~ 100°).
(3) Aging time
- After aging start, keep the power on (no suspension of
power supply) and heat-run over 5 minutes.
- Using 'no signal' or 'POWER ONLY' or the others, check
the back light on.
▪ Auto adjustment Map(using RS-232C to USB cable)
RS-232C COMMAND
[CMD ID DATA]
Wb 00 00 White Balance Start
Wb 00 ff White Balance End
<Caution>
Color Temperature : COOL, Medium, Warm.
One of R Gain/G Gain/ B Gain should be kept on 0xC0, and
adjust other two lower than C0.(When R/G/B Gain are all
C0, it is the FULL Dynamic Range of Module)
* Manual W/B process using adjust Remote control.
▪ After enter Service Mode by pushing "ADJ" key,
▪ Enter White Balance by pushing "►" key at "10. White
Balance".
* CASE Cool Mode
First adjust the coordinate far away from the target
value(x, y).B.
1) x, y > target
2) x, y < target
3) x >target, y < target
4) x < target, y > target
- Every 4 case have to fit y value by adjusting B Gain
and then fit x value by adjusting R-Gain.
- In this case, increasing/decreasing of B Gain and R
Gain can be adjusted.
How to adjust
1) In case G gain more than 172
Adjust R Gain and B Gain less than 192
2) If the G gain value be adjusted down to 172
One of the R/B Gain is 254
3) If G Gain is 172 , More than one of R/B Gain is to be
between 192~254
Aging time
(Min)
Cool Medium Warm
xyxyxy
spec 271 270 286 289 313 329
target 278 280 293 299 320 339
Full White Pattern CA-210
COLOR
ANALYZER
TYPE : CA-210
RS-232C Communication
RS-232C COMMAND
[CMD ID DATA] MIN
CENTER
(DEFAULT) MAX
Cool Mid Warm Cool Mid Warm
R Gain jg Ja jd 00 172 192 192 254
G Gain jh Jb je 00 172 192 192 192
B Gain ji Jc jf 00 192 192 172 254
R Cut 64 64 64 128
G Cut 64 64 64 128
B Cut 64 64 64 128
NC5.0 Aging time
(Min)
Cool Medium Warm
xyxyxy
271 270 285 293 313 329
1 0-2 280 285 294 308 319 340
2 3-5 276 280 290 303 315 335
3 6-9 272 275 286 298 311 330
4 10-19 269 272 283 295 308 327
5 20-35 267 268 281 291 306 323
6 36-49 266 265 280 288 305 320
7 50-79 265 263 279 286 304 318
8 80-119 264 261 278 284 303 316
9 Over 120 264 260 278 283 303 315
Model information W/B information
Chassis
or Model Module Panel Backlight Type Using W/B table
22/28LX** All All Edge LED X
60LX** Sharp Sharp Edge LED X
Ohters LGD LGD
Direct LED
or
Edge LED
O

- 13 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
* CASE Medium / Warm
First adjust the coordinate far away from the target
value(x, y).
1) x, y > target
i) Decrease the R, G.
2) x, y < target
i) First decrease the B gain,
ii) Decrease the one of the others.
3) x > target, y < target
i) First decrease B, so make y a little more than the target.
ii) Adjust x value by decreasing the R
4) x < target, y > target
i) First decrease B, so make x a little more than the target.
ii) Adjust x value by decreasing the G
* After you finished all adjustments, Press "In-start" key and
compare Tool option and Area option value with its BOM, if
it is correctly same then unplug the AC cable. If it is not
same, then correct it same with BOM and unplug AC cable.
For correct it to the model's module from factory Jig model.
* Push the "IN STOP" key after completing the function
inspection. And Mechanical Power Switch must be set
“ON”.
4.2. Outgoing condition Configuration
■ When pressing IN-STOP key by SVC remocon, Red LED
are blinked alternatively. And then automatically turn off.
(Must not AC power OFF during blinking)
5. HI-POT Test
5.1. HI-POT auto-check preparation
- Check the POWER cable and SIGNAL cable insertion condition
5.2. HI-POT auto-check
(1) Pallet moves in the station. (POWER CORD / AV CORD is
tightly inserted)
(2) Connect the AV JACK Tester.
(3) Controller (GWS103-4) on.
(4) HI-POT test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, GOOD Lamp on and move to next proc-
ess automatically.
5.3. Checkpoint
(1) Test voltage
- Touchable Metal : 3 KV / min at 100 mA
- SIGNAL : 3KV / min at 100 mA
(2) TEST time: 1 second. (case : mass production )
(3) TEST POINT
- Touchable Metal => LIVE & NEUTRAL : Touchable Metal.
- SIGNAL => LIVE & NEUTRAL : SIGNAL.
6. Model name & Serial number D/L
▪ Press "Power on" key of service remote control.
(Baud rate : 115200 bps)
▪ Connect RS232 Signal Cable to USB Jack.
▪ Write Serial number
▪ Must check the serial number at the Diagnostics of SET UP menu.
(Refer to below).
6.1. Signal Table
CMD : A0h
LENGTH : 85~94h (1~16 bytes)
ADH : EEPROM Sub Address high (00~1F)
ADL : EEPROM Sub Address low (00~FF)
Data : Write data
CS : CMD + LENGTH + ADH + ADL + Data_1 +...+ Data_n
Delay : 20ms
6.2. Command Set
* Description
FOS Default write : <7mode data> write
Vtotal, V_Frequency, Sync_Polarity, Htotal, Hstart, Vstart, 0,
Phase
Data write : Model Name and Serial Number write in EEPROM,.
6.3. 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.
CMD LENGTH ADH ADL DATA_1 . . . Data_n CS DELAY
Adjust mode CMD(hex) LENGTH(hex) Description
EEPROM WRITE A0h 84h+n n-bytes Write (n = 1~16)

- 14 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
* 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)
There 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 or Serial number like photo.
4) Check the model name Instart menu. → Factory name
displayed.
5) Check the Diagnostics.(DTV country only) → Buyer model
displayed.
7. MAC Address & CI+ key download
7.1 MAC Address
7.1.1 Equipment & Condition
▪ Play file : Serial.exe
▪ MAC Address edit
▪ Input Start / End MAC address
7.1.2 Download method
(1) Communication Prot connection
Connection: PCBA(USB Port) → USB to Serial Adapter(UC-
232A) → RS-232C cable → PC(RS-232C port)
* Caution: LJ21* chassis support only UC-232A driver. (only
use this one.)
(2) MAC Address & CI+ Key Download
▪ Set CI+ Key path Directory at Start Mac & CI+ Download
Programme
▪ Com 1,2,3,4 and 115200(Baudrate)
▪ Port connection button click(1)
▪ Push the (2) MAC Address write.
▪ At success Download, check the OK (3)
▪ Start CI+ Key Download, Push the (4)
▪ Check the OK or NG
GP4_LOW

- 15 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
7.2. LAN Inspection
7.2.1. Equipment & Condition
▪ Each other connection to LAN Port of IP Hub and Jig
7.2.2. 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.
7.3. LAN PORT INSPECTION(PING TEST)
Connect SET -> LAN port == PC -> LAN Port
7.3.1. 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
7.3.2. 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.
SET PC

- 16 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
BLOCK DIAGRAM
(P1801)
30P HD LVDS wafer
51P FHD LVDS wafer
(P1800)
COMP2_L/R_IN
COMP2_Y+/AV_CVBS_IN, COMP2_Pb+/Pr+
CK+/-, D0+/-, D1+/-, D2+/-_HDMI2
DDC_SCL/SDA_2, HDMI_CEC
Serial Flash
(8Mbit)
IC1300
SPI_SCK/SDI/SDO/CS
System EEPROM
(256Kbit)
IC104
I2C_SCL/SDA
RXA0+/-~RXA4+/-, RXACK+/- RXB0+/-~RXB4+/-, RXBCK+/-
SPK_R
SPK_L
AMP_SCL/SDA
AUD_MASTER_CLK,
AUD_LRCH,
AUD_LRCK, AUD_SCK
TAS5733
(IC5600)
IR Connector
(P4600)
KEY1/2, LED_R, IR
REAR
HDMI1
(JK800)
F-SCART
(JK4300)
SPDIF_OUT
SPDIF(Optic)
(JK1001)
SIDE
USB
(JK700)
HDMI2(MHL)
(JK801)
CK+/-, D0+/-, D1+/-, D2+/-,_HDMI4, DDC_SCL/SDA_4, HDMI_CEC
SIDE_USB_DM/DP
USB1_OCD/CTL
SN1406035RGER
+5V_USB
MHL_CD_SENSE
AVDD5V_MHL,MHL_OCP
GGGGjpGzOwX`WWP G
uhukGGmshzo G
pjXWYGOYnP G
H27U2G8F2DTR-BC
PCM_A[0:7]
TC74LCX244FT Buffer
TS_DATA[0:7]
PCM_DATA[0:7]
COMPONENT
(JK4301/4302)
5V_HDMI_4
PCM_A[8:14]
T G
Y[tG
SC1/AV2_CVBS_IN,
DTV/MNT_OUT, DTV/MNT_L/R_OUT
SC1_R+/G+/B+, COMP1_Y+/Pb+/Pr+
IF_P
IF_N
FE_TS_DATA[0:7]
RGB
(P3600)
RS212C
(P3200)
R,G,B Hsync,Vsync
UART_TX, UART_RX
BD82020FVJ
Head Phone
(JK3000)
HP_EXT_SPK_ROUT/LOUT
Extnal SPK
(JK3400)
Main SOC
M1A -256MB Imbedded
(IC101)
LX320C

- 17 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
(P1801)
30P HD LVDS wafer
51P FHD LVDS wafer
(P1800)
COMP2_L/R_IN
COMP2_Y+/AV_CVBS_IN, COMP2_Pb+/Pr+
CK+/-, D0+/-, D1+/-, D2+/-_HDMI2
DDC_SCL/SDA_2, HDMI_CEC
Serial Flash
(8Mbit)
IC1300
SPI_SCK/SDI/SDO/CS
System EEPROM
(256Kbit)
IC104
I2C_SCL/SDA
RXA0+/-~RXA4+/-, RXACK+/-
RXB0+/-~RXB4+/-, RXBCK+/-
SPK_R
SPK_L
AMP_SCL/SDA
AUD_MASTER_CLK,
AUD_LRCH,
AUD_LRCK, AUD_SCK
TAS5733
(IC5600)
IR Connector
(P4600)
KEY1/2, LED_R, IR
REAR
HDMI1
(JK800)
F-SCART
(JK4300)
SPDIF_OUT
SPDIF(Optic)
(JK1001)
SIDE
USB
(JK700)
HDMI2(MHL)
(JK801)
CK+/-, D0+/-, D1+/-, D2+/-,_HDMI4, DDC_SCL/SDA_4, HDMI_CEC
SIDE_USB_DM/DP
USB1_OCD/CTL
SN1406035RGER
+5V_USB
MHL_CD_SENSE
AVDD5V_MHL,MHL_OCP
GGGGjpGzOwX`WWP G
uhukGGmshzo G
pjXWYGOYnP G
H27U2G8F2DTR-BC
PCM_A[0:7]
TC74LCX244FT Buffer
TS_DATA[0:7]
PCM_DATA[0:7]
COMPONENT
(JK4301/4302)
5V_HDMI_4
PCM_A[8:14]
T G
Y[tG
SC1/AV2_CVBS_IN,
DTV/MNT_OUT, DTV/MNT_L/R_OUT
SC1_R+/G+/B+, COMP1_Y+/Pb+/Pr+
IF_P
IF_N
FE_TS_DATA[0:7]
RGB
(P3600)
RS212C
(P3200)
R,G,B Hsync,Vsync
UART_TX, UART_RX
BD82020FVJ
Head Phone
(JK3000)
HP_EXT_SPK_ROUT/LOUT
Extnal SPK
(JK3400)
LAN
(JK2100)
EPHY_TP/RP, EPHY_TN/RN
Main SOC
M1A -256MB Imbedded
(IC101)
LX330C

- 18 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
900
200
400
410
420
540
521
530
820
501
500
120
310
121
LV1
A2 AW1
A10
Set + Stand
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 Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE

THERMAL
THERMAL
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
POWER
2014/12/03
4
L14_CA
Q403
MMBT3904(NXP)
TR_NXP
E
B
C
PANEL_VCC
Q400
MMBT3904(NXP)
TR_NXP
E
B
C
R401
10K
OPT
R442
10K
Q404
MMBT3904(NXP)
TR_NXP
E
B
C
R441
10K
+3.5V_ST
R448
2.2K
R444
10K
+13.2V
R400
10K
+3.5V_ST
R435
100K
L410
BLM18PG121SN1D
POWER_ON/OFF_1
POWER_DET
RL_ON
+3.3V_Normal
+13.2V
C429
0.1uF
16V
PANEL_CTL
R443
10K
R406
10K
+3.5V_ST
POWER_DET_RESET
C425
0.1uF
25V
OPT
C422
0.1uF
16V
R451
5.6K
R404
4.7K
R402
10K
R452
5.6K
R412
33K
OPT
Q401
MMBT3906(NXP)
TR_NXP
1
2
3
R454
100
C430
22uF
10V
C428
2.2uF
10V
ZD402
5V
TVS_SEMTECH
L408
UBW2012-121F
120OHM
L409
BLM18PG121SN1D
+3.3V_Normal
L411
CB2012PK501T
10uF
C426
10V
+1.5V_DDR
10uF
C431
10V
ZD403
2.5V
OPT
ZD404
5V
TVS_SEMTECH
R447
22K
R449
1K
1/16W
1%
R450
200
1/16W
1%
IC404
AZ1117EH-ADJTRG1
ADJ/GND
OUTIN
R453
0
L412
BLM18PG121SN1D
R471
22K
1/16W
1%
C441
1uF
10V
R470
10K
R469
68K
1/16W
1%
C443
0.1uF
16V
C440
100pF
50V
ZD405
5V
TVS_SEMTECH
+3.5V_ST
+13.2V
C439
0.1uF
25V
C442
2200pF
50V
C415
0.1uF
25V
R419
100
R426
10K
L403
MLB-201209-0120P-N2
R420
1K
Q402
MMBT3904(NXP)
TR_NXP
E
B
C
A13.2V
+3.3V_Normal
L414
OPT
+13.2V
R425
10K
INV_CTL
+3.5V_ST
PWM1
R467
1K
PWM1_Pulldown_R
R424
3.9K
PWM_DIM
C402
0.1uF
25V
L415
MLB-201209-0120P-N2
C438
10uF
25V
C433
4.7uF
50V
OPT
Q405
SSM3J332R
S
G
D
Q406
SSM3J332R
FET_TOSHIBA
S
G
D
+3.5V_ST
R438
4.7K
OPT
C423
22uF
16V
C432
1uF
16V
C403
4700pF
50V
OPT
+5V_Normal
+5V_USB
USB1_CTL
USB1_OCD
R422
15K
C418
47pF
50V
C404
4700pF
50V
OPT
+5V_Normal
ZD401
2.5V
OPT
+1.10V_VDDC
C408
2200pF
50V
OPT
C417
3300pF
50V
C405
10uF
25V
C421
0.047uF
25V
L404
CB2012PK501T
C409
2200pF
50V
OPT
C416
22pF
50V
C411
82pF
50V
OPT
C424
22uF
16V
+13.2V
R403
10K
C419
22pF
50V
C412
10uF
6.3V
OPT
C406
10uF
25V
+3.3V_Normal
C410
0.047uF
25V
+3.3V_Normal
C420
3300pF
50V
R408
100K
C407
1uF
10V
R407
4.7K
OPT
R409
91K
+5V_Normal
L413
2uH
L405
4.7uH
L406
4.7uH
ZD402-*1
TVS_KEC
ZD404-*1
TVS_KEC
ZD405-*1
TVS_KEC
IC401
KIC7529M2
RESET_IC_KEC
1
GND
2OUT 3
VCC
Q401-*1
2N3906S-RTK
TR_KEC
E
B
C
Q400-*1
2N3904S
TR_KEC
E
B
C
Q402-*1
2N3904S
TR_KEC
E
B
C
Q403-*1
2N3904S
TR_KEC
E
B
C
Q404-*1
2N3904S
TR_KEC
E
B
C
C446
0.1uF
25V
+3.3V_Normal
R405
10K
R418
20K
R414
10K
C444
22uF
10V
C445
22uF
10V
C413
22uF
10V
C414
22uF
10V
ZD406
5.1v
OPT
ZD407
5.1v
OPT
R468
6.8K
1/16W
1%
R445
33K
R446
120K
Q406-*1
AO3435
FET_AOS
G
D S
C427
0.22uF
25V
NON_60_SHARP
IC401-*1
APX803E29
RESET_IC_DIODES
1
GND
2RESET 3
VCC
R411
4.7K
1%
R413
5.1K
1%
SN1406035RGER
IC400
1
SS2
3
EN2
7
SW_OUT
9
VIN2
10
PGND2
11
LX2
12
BST2
13 COMP2
14 FB2
15 RSET
16 AGND
17 FB1
18 COMP1
19 BST1 20 LX1 21 PGND1 22 VIN1 23 V7V 24 SS1
5
SW_EN
8
SW_IN
6
NFAULT
4
ROSC/SYNC
2
EN1 25
[EP]
P401
SMAW200-H12S5K(BK)(LTR)
9
GND
4D13.2V
8A13.2V
3
GND
12 PDIM#1
7
A13.2V
2PDIM#2
11
DRV_ON
6D13.2V
1
PWR_ON
10 GND
5
D13.2V
13
R417
39K
1%
R416
5.1K
1%
R415
0
5%
IC405
BD9D321EFJ
3
VREG
2
FB
4
SS
1
EN
5GND
6SW
7BOOT
8VIN
9
[EP]
R472
3.3K
USB1_CTL_Pull_Down
R430
14K
1%
R431
5.6K
1%
C427-*1
0.1uF
50V
60_SHARP
R473
30K
OPT R474
30K
OPT
R475
30K
OPT
R467-*1
1000pF
50V
PWM1_CAP
+13.2V to PANEL_VCC +3.5V_ST to +3.3V_Normal
+3.5V_Normal to +1.5V_DDR
+13.2V POWER_DET
FROM POWER B/D 13.2V
POWER
R2
R1
1.3A
Vout=1.25*(1+R2/R1)+Iadj*R2
+13.2V to +3.5V_STANDBY
R2
Vout=0.765*(1+R1/R2)
R1
3A
Vout=0.6(R1/R2)+0.6
+5V_Normal & +1.10V_VDDC
R2
R1
Vout=0.6(R1/R2)+0.6
R1
R2
Check the pull down
when AC Power On with HDD
Copyright © 2015 LG Electronics Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

USB DOWN STREAM
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
2014/05/20
USB_S1 7
L14_CA_M1A
JK700
3AU04S-305-ZC-(LG)
1234
5
D700
RCLAMP0502BA
OPT
SIDE_USB1_DM
SIDE_USB1_DP
C700
22uF
10V
USB_HDD_CAP1_22uF
ZD700
5V
OPT
SD05
C701
5pF
50V
OPT C702
5pF
50V
OPT
C703
22uF
10V
USB_HDD_CAP2_22uF
+5V_USB
C704
22uF
10V
OPT
C700-*1
10uF
10V
USB_HDD_CAP1_10uF C703-*1
10uF
10V
USB_HDD_CAP2_10uF
R700
2.2
R701
2.2
USB (SIDE)
Copyright © 2015 LG Electronics Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only