LG 32LN54 User manual

Printed in KoreaP/NO : MFL67704507 (1306-REV01)
CHASSIS : LB36B
MODEL : 32LN54** 32LN54**-T*
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
LED TV
SERVICE MANUAL
North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com
Internal Use Only

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CONTENTS
CONTENTS .............................................................................................. 2
SAFETY PRECAUTIONS ........................................................................ 3
SERVICING PRECAUTIONS ................................................................... 4
SPECIFICATION ...................................................................................... 6
ADJUSTMENT INSTRUCTION ............................................................... 8
TROUBLE SHOOTING .......................................................................... 13
BLOCK DIAGRAM ................................................................................. 18
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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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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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 LB36B
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 about5 minutes prior to
the adjustment.
3. Test method
1) Performance: LGE TV test method followed
2) Demanded other specification
- Safety : CE, IEC specification
- EMC : CE, IEC
4. Model General Specification
No. Item Specication Remarks
1. Market Asia, Oceania, Africa, Middle East
(PAL/DVB Market)
2. Broadcasting system
1) PAL/SECAM-B/G/D/K
2) PAL-I
3) NTSC-M
4) DVB-T
3. Channel Storage ATV - 135EA, DTV - 1000EA
4. Receiving system Analog : Upper Heterodyne
Digital : COFDM(DVB-T)
► 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(Composite Input) PAL, SECAM, NTSC 4 System : PAL, SECAM, NTSC, PAL60
6. Component Input Y/Cb/Cr, Y/Pb/Pr
7. HDMI Input HDMI1-DTV/DVI
HDMI2-DTV/DVI
8. SPDIF out SPDIF out
9 USB Input For My Media(Movie/Photo/Music List) and SVC
10 Headphone

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5. Component Video Input (Y,
Cb/Pb, Cr/Pr)
No. Resolution H-freq(kHz) V-freq(Hz) Porposed
1 720×480 15.73 60.00 SDTV, DVD 480i
2 720×480 15.63 59.94 SDTV, DVD 480i
3 720×480 31.47 59.94 480p
4 720×480 31.50 60.00 480p
5 720×576 15.625 50.00 SDTV, DVD 625 Line
6 720×576 31.25 50.00 HDTV 576p
7 1280×720 45.00 50.00 HDTV 720p
8 1280×720 44.96 59.94 HDTV 720p
9 1280×720 45.00 60.00 HDTV 720p
10 1920×1080 31.25 50.00 HDTV 1080i
11 1920×1080 33.75 60.00 HDTV 1080i
12 1920×1080 33.72 59.94 HDTV 1080i
13 1920×1080 56.250 50 HDTV 1080p
14 1920×1080 67.5 60 HDTV 1080p
6. HDMI Input : Refer to adjust specification about EDID data.
6.1. DTV mode
No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed
1. 720*480 31.469 / 31.5 59.94 / 60 27.00/27.03 SDTV 480P
2. 720*576 31.25 50 54 SDTV 576P
3. 1280*720 37.500 50 74.25 HDTV 720P
4. 1280*720 44.96 / 45 59.94 / 60 74.17/74.25 HDTV 720P
5. 1920*1080 33.72 / 33.75 59.94 / 60 74.17/74.25 HDTV 1080I
6. 1920*1080 28.125 50.00 74.25 HDTV 1080I
7. 1920*1080 26.97 / 27 23.97 / 24 74.17/74.25 HDTV 1080P
8. 1920*1080 33.716/33.75 29.976/30.00 74.25 HDTV 1080P
9. 1920*1080 56.250 50 148.5 HDTV 1080P
10. 1920*1080 67.43 / 67.5 59.94 / 60 148.35/148.50 HDTV 1080P
6.2. PC mode
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark
1. 640*350 @70Hz 31.468 70.09 25.17 EGA
2. 720*400 @70Hz 31.469 70.08 28.321 DOS
3. 640*480 @60Hz 31.469 59.940 25.175 VESA(VGA)
4. 800*600 @60Hz 37.879 60.31 40.000 VESA(SVGA)
5. 1024*768 @60Hz 48.363 60.00 65.000 VESA(XGA)
6 1152*864 @60Hz 54.348 60.053 80.002 VESA
7. 1280*1024 @60Hz 63.981 60.020 108 VESA(SXGA) FHD only(Support to HDMI-PC)
8. 1360*768 @60Hz 47.712 60.015 85.5 VESA(WXGA)
9. 1920*1080 @60Hz 67.5 60.0 148.5 WUXGA
(Reduced blanking) FHD only(Support to HDMI-PC)

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ADJUSTMENT INSTRUCTION
1. Application Range
This specification sheet is applied to all of the LED TV with
LB36B 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 : 100-220 V~, 60 Hz
(6) Adjustment equipments
: Color Analyzer(CA-210 or CA-110), 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(*.epk file download)
(1) Put the USB Stick to the USB socket.
(2) Automatically detecting update file in USB Stick.
- If version of update file in USB Stick is lower, it will not
work. But version of update file is higher, USB data will be
detected automatically.
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.
(1)
filexxx.bin
(4)
(5)
(6)
(7)...........OK
filexxx.bin
(2)
(3)
Please Check the Speed :
To use speed between
from 200KHz to 400KHz

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(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 updated version is higher than what TV has, the 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)
(4) Completed selecting Tool option.
* RS-232C Connection Method.
Connection : PCBA (USB Port) → USB to Serial Adapter
(UC-232A) → RS-232C cable → PC(RS-232C port)
● Product name of USB to Serial Adapter is UC-232A.
4. ADC Process
4.1. ADC
- Enter Service Mode by pushing "ADJ" key,
- Enter Internal ADC mode by pushing "►" key at "8. 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 [Component1 Input (480i)]
▪ ad 00 10 [Adjust 480i Comp1]
▪ xb 00 60 [RGB Input (1024*768)]
▪ ad 00 10 [Adjust 1024*768 RGB]
▪ aa 00 90 End Adjust mode
* Required equipment : Adjustment remote control.
4.2. Function Check
4.2.1. Check display and sound
■ Check Input and Signal items.
(1) TV
(2) AV (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.
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)
EZ ADJUST
0. Tool Option1
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Tool Option5
5. Tool Option Commercial
6. Country Group
7. Area Option
8. ADC Calibration ►
9. White Balance
10. 10 Point WB
11. Test Pattern
12. EDID D/L
13. Sub B/C
14. Ext. Input Adjust
ADC Calibration
ADC Comp 480i
ADC Comp 1080p
ADC Type
Start
NG
NG
OPT
Reset

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5. Total Assembly line process
5.1. Adjustment Preparation
▪ W/B Equipment condition
CA210: CH14, Test signal: Inner pattern(80IRE)-LED Module
▪ Above 5 minutes H/run in the inner pattern. ("power on" key
of Adjustment remote control)
* The spec of color temperature and coordinate.
▪ ROW LED W/B Table in process of aging time (Only LGD
ROW module)
* 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 Remote control POWER
ON → 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(RS-232C)
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.
■ Color analyzer(CA100+, CA210) should be used in the
calibrated ch by CS-1000.
■ Operate the zero-calibration of the CA100+ or CA-210,
then stick sensor to the module when adjusting.
■ After enter Service Mode by pushing “ADJ” key,
■ Enter White Balance by pushing “►” key at “9. White
Balance”.
■ For manual adjustment, it is also possible by the following
sequence.
(1) Set TV in Adj. mode using “P-ONLY” key on remote
controller and then operate heat run longer than 15
minutes.(If not executed this step, the condition for W/B
may be different.)
(2) Push “Exit” key.
(3) Enter White Balance mode by pushing the ADJ key and
select “9. White Balance”. When KEY (►) is pressed,
206 Gray internal pattern will be displayed.
(4) Zero Calibrate the probe of Color Analyzer, then place it
on the center of LCD module within 10cm of the surface
(5) Select each items (Red/Green/Blue Gain) using
▲/▼(CH +/-) key on Remote control.
(6) Adjust R/ G/ B Gain using ◄/►(VOL +/-) key on R/C.
Full White Pattern CA-210
COLOR
ANALYZER
TYPE : CA-210
RS-232C Communication
Mode Color Temp Color coordinate Remark
Cool (C50) 13,000 K X=0.274 (±0.002)
Y=0.280 (±0.002)
<Test Signal>
- Inner pattern
for W/B adjust
- External white
pattern
(80IRE, 204gray)
Medium(0) 9,300 K X=0.290 (±0.002)
Y=0.300 (±0.002)
Warm(W50) 6,500 K X=0.318 (±0.002)
Y=0.336 (±0.002)
S7LR2 Aging time
(Min)
Cool Medium Warm
X y x y x y
1 0-2 277 284 293 304 319 338
2 3-5 276 282 292 302 318 336
3 6-9 275 280 291 300 317 334
4 10-19 273 277 289 297 315 331
5 20-35 272 276 288 296 314 330
6 36-49 271 275 287 295 313 329
7 50-79 270 274 286 294 312 328
8 Over 80 269 273 285 293 311 327
RS-232C COMMAND
[CMD ID DATA] MIN
CENTER
(DEFAULT) MAX
Cool Mid Warm Cool Mid Warm
R Gain jg Ja jd 00 172 192 192 192
G Gain jh Jb je 00 172 192 192 192
B Gain ji Jc jf 00 192 192 172 192
R Cut 64 64 64 128
G Cut 64 64 64 128
B Cut 64 64 64 128
EZ ADJUST
0. Tool Option1
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Tool Option5
5. Tool Option Commercial
6. Country Group
7. Area Option
8. ADC Calibration
9. White Balance
10. 10 Point WB
11. Test Pattern
12 EDID D/L
13. Sub B/C
14. Ext. Input Adjust
Whit Balance
Color Temp. ◄ ►
R-Gain
G-Gain
B-Gain
R-Cut
G-Cut
B-Cut
Test-Pattern
Backlight
Reset To Set
Cool
172
192
192
64
64
64
ON
100

- 11 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
(7) Adjust three modes all (Cool / Medium / Warm)
- For All model w/o LS345
Fix the one of R/G/B gain and change the others
- For G-FIX model
Cool Mode
1) Fix the one of R/G/B gain to 192 (default data) and
decrease the others. (If G gain is adjusted over 172
and R and B gain less than 192 , Adjust is O.K.)
2) If G gain is less than 172, Increase G gain by up to
172, and then increase R gain and G gain same
amount of increasing G gain.
3) If R gain or B gain is over 255, readjust G gain less
than 172, Conform to R gain is 255 or B gain is 255
Medium / Warm Mode - Fix the one of R/G/B gain to
192 (default data) and decrease the others.
(8) When adjustment is completed, exit adjustment mode
using EXIT key on Remote control.
* CASE Cool
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 finish all adjustments, Press “In-start” button
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.
5.2. DDC EDID Write (HDMI 256Byte)
■ Connect HDMI Signal Cable to HDMI Jack.
■ Write EDID DATA to EEPROM(24C02) by using DDC2B
protocol.
■ Check whether written EDID data is correct or not.
* For SVC main Assembly, EDID have to be downloaded to
Insert Process in advance.
5.3. EDID DATA
1) All Data : HEXA Value
2) Changeable Data :
*: Serial No : Controlled / Data:01
**: Month : Controlled / Data:00
***: Year : Controlled
****: Check sum
- Auto Download
■ After enter Service Mode by pushing “ADJ” key,
■ Enter EDID D/L mode.
■ Enter “START” by pushing “OK” key.
[Caution]
* Use the proper signal cable for EDID Download
- Analog EDID : Pin3 exists
- Digital EDID : Pin3 exists
* Edid data and Model option download (RS232)
(1) HD HDMI EDID DATA
(2) Detail EDID Options are below
a. Product ID
b. Serial No: Controlled on production line.
c. Month, Year: Controlled on production line:
ex) Week : '01' -> '01'
Year : '2012' -> '16' fix
EZ ADJUST
0. Tool Option1
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Tool Option5
5. Tool Option Commercial
6. Country Group
7. Area Option
8. ADC Calibration
9. White Balance
10. 10 Point WB
11. Test Pattern
12. EDID D/L ►
13. Sub B/C
14. Ext. Input Adjust
EDID D/L
HDMI1 NG
HDMI2 NG
Start Reset
EDID D/L
HDMI1 OK
HDMI2 OK
Start Reset
NO Item CMD 1 CMD 2 Data 0
Enter download
Mode
Download
‘Mode In’ A A 0 0 When transfer the ‘Mode In’, Carry the command.
EDID data and
Model option
download
ADC Adjust A E 00 10 Automatically adjustment
(The use of a internal pattern)
No. Item Condition Hex Data
1 Manufacturer ID GSM 1E6D
2 Version Digital : 1 01
3 Revision Digital : 3 03
0123456789ABCDEF
0 0 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 40 00 26 30
50 18 88 03 06 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 80 1E 01 1D 80 18 71 1C 16 20 58 2C 25 00 A0 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
Model Name HEX EDID Table DDC Function
HD/FHD Model 0001 01 00 Analog/Digital

- 12 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
d. Model Name(Hex):
cf) TV set’s model name in EDID data is below.
e. Checksum: Changeable by total EDID data.
f. Vendor Specific
- FHD 8bit model
5.4. Outgoing condition Configuration
■ When pressing IN-STOP key by Service remote control,
Red LED are blinked alternatively. And then automatically
turn off. (Must not AC power OFF during blinking)
5.5. GND and HI-POT Test
5.5.1. GND & HI-POT auto-check preparation
- Check the POWER CABLE and SIGNAL CABE insertion
condition.
5.5.2. GND & 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) GND Test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, execute next process(Hi-pot test).
(Remove A/V CORD from A/V JACK BOX)
(5) HI-POT test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, GOOD Lamp on and move to next
process automatically.
5.5.3. Checkpoint
(1) Test voltage
1) 3 Poles
- GND: 1.5KV/min at 100 mA
- SIGNAL: 3KV/min at 100 mA
2) 2 Poles
- SIGNAL: 3 KV/min at 100 mA
(2) TEST time: 1 second
(3) TEST POINT
1) 3 Poles
- GND Test = POWER CORD GND and SIGNAL
CABLE GND.
- Hi-pot Test = POWER CORD GND and LIVE &
NEUTRAL.
2) 2 Poles
- Hi-pot Test = Accessible Metal and LIVE & NEUTRAL.
(4) LEAKAGE CURRENT: At 0.5mArms
6. Local Dimming Function Check
Step1) Turn on TV.
Step2) Press “P-only” key, enter to power only mode and
escape the “P-only” Mode by pressing “Exit” key.
Step3) Press “Tilt” key, entrance to Local Dimming mode.
Step4) At the Local Dimming mode, module Edge Backlight
moving Top to bottom Back light of module moving.
Step5) confirm the Local Dimming mode.
Step6) Press “Exit” key.
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.
(2) When 3D OSD appear automatically, then select OK button.
(3) Don't wear a 3D Glasses, check the picture like below.
8. EYE-Q function check
Step1) Turn on TV
Step 2) Press EYE key of Adj. R/C.
Step 3) Cover the Eye Q sensor on the front of the using your
hand and wait for 6 seconds.
Step 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 sensor
Step 5) Remove your hand from the Eye Q sensor and wait
for 6 seconds.
Step 6) Confirm that “ok” pop up. If change is not seen, replace
Eye Q sensor.
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 (HDMI)
Check Sum
(Hex)
Block 0 A4
Block 1 5B (HDMI1)
4B (HDMI2)
Input Model name(HEX)
HDMI1 67030C001000
HDMI2 67030C002000
HDMI3 67030C003000

- 13 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
TROUBLESHOOTING
1. Power-up boot check
Check stand - by Voltage.
P401 3, 5pin : +3.5V_ST Check 18pin Power connector. Main B/D 3.5V Line
Short Check
Check X201 clock
24 MHz Replace X201.
Check P401 PWR_ON.
1pin : 3.3V
Replace M star(IC101) or Main board.
Check Multi Voltage
P401 9, 10pin : 24V
/ 13, 14, 15pin:12V
Replace Power Board.
Check DRV ON Control
P403 2 pin : High
Check Power Board.
Check IC402/3/7 Output Voltage
IC402 : 2.5V
IC403 : 1.15V
IC407 : 1.5V
Q403 : 3.3V
Replace IC402, IC403, IC407, Q403
Re- download software.
Check stand - by Voltage
L404, L408 : +3.5V Replace L404, L408.
Check LVDS Power Voltage
Q409 : 12V Replace Q409.
Check Mstar LVDS Output Replace Mstar(IC101) or Main Board.
Change Module
ok
ok
ok
ok
ok
ok
ok
ok
okNo
No
ok
Replace Power board.
ok
No
No
No
No
No
No
No
No

- 14 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
2. Digital/Analog TV Video
3. AV Video
Check RF Cable & Signal
Check Tuner 3.3V Power
L3703 Replace L3703.
Check Tuner 1.8V Power
IC3703 2 pin : 1.8V
Check IF_P/N Signal
TU3700 10/11 Pin
Replace IC3703.
Check Mstar LVDS Output Replace Mstar(IC101) or Main Board.
ok
ok
ok
ok
No
No
No
No
Bad Tuner. Replace Tuner.
Check input signal format.
Is it supported?
Check AV Cable for damage
for damage or open conductor.
Check JK1702, CVBS Signal Line
R1722
ok
ok
ok
No Replace Jack.
ok
Check CVBS_DET Signal. Replace R1713.
No
Check Mstar LVDS Output. Replace Mstar(IC101) or Main Board.
No

- 15 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
4. Component Video
5. HDMI Video
Check input signal format.
Is it supported?
Check Component Cable
for damage or open conductor.
Check JK1702
Y/PB/PR signal Line.
ok
ok
ok
No Replace Jack.
Check COMP_DET Signal. Replace R1712 or R1713.
No
Check Mstar LVDS Output. Replace Mstar(IC101) or Main Board.
ok
No
Check input signal format.
Is it supported?
Check HDMI Cable conductors
for damage or open conductor.
Check EDID
R832, R833, R834, R835 I2C Signal.
Check JK801, JK803.
ok
ok
ok
No
No
Replace the defective IC or re-download EDID data.
ok
Replace Jack.
Check HDMI Signal. Check other set
If no problem, check signal line.
ok
No
Check Mstar LVDS Output. Replace Mstar(IC101) or Main Board .
ok
No
Replace Main Board.
No
Check HDMI_DET (HPD). No Replace R803, R801, R826, R807, R817, Q801, R819, R818, R830.

- 16 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
6. MHL Video
7. All Source Audio
Check input signal format.
Is it supported?
Check MHL Cable conductors
for damage or open conductor.
Check MHL Signal (R214, R215)
Check JK803
ok
ok
ok
No
No
Replace the defective IC or re-download EDID data
ok
Replace Jack
Check MHL Signal Check other set
If no problem, check signal line
ok
No
Check Mstar LVDS Output Replace Mstar(IC101) or Main Board .
ok
No
Replace Main Board
No
Check CD_Sense, Cbus, Vbus No Replace R810, R802, R831, R830, IC802, D800
Check the TV Speaker Menu
(Menu - > Audio - > TV Speaker)
On
ok
ok
Check Output Signal P3401
1, 2, 3, 4 pin. Replace Audio AMP IC(IC3401).
ok
No
Check Connector & P3401 Replace connector
if found to be damaged.
ok
No
Check speaker resistance
and connector damage. Replace speaker.
ok
No
Off Toggle the Menu.
Check AMP IC(IC3401) Power
24V, 3.3V
No Replace Amp IC(IC501).
Check Mstar I2S Output
IC3401 37,38,39 Pin
No Check signal line. Or replace Mstar(IC101).
Check Mstar AUDIO_MASTER_CLK
R148
No Replace Mstar(IC101) or Main Board.
ok
Check AMP I2C Line
R3406, R3407
No Check signal line. Or replace Mstar(IC101).

- 17 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
8. Digital/Analog TV Audio
9. AV Audio
10. Component Audio
Check RF Cable & Signal
Follow procedure ‘7. All source audio’
trouble shooting guide.
ok
Check Tuner 3.3V Power
L3703 Replace L3703.
Check Tuner 1.8V Power
IC3703 2 pin : 1.8V
Check IF_P/N Signal
TU3700 10/11 Pin
Replace IC3703.
ok
ok
ok
No
No
No Bad Tuner. Replace Tuner.
Check AV Cable for damage
for damage or open conductor
Check JK1702 Signal Line
R1714,R1715
ok
ok
No Replace Jack
Follow procedure
‘7. All source audio ’
trouble shooting guide.
Check AV Cable for damage
for damage or open conductor
Check JK1702 Signal Line
R1714,R1715
ok
ok
No Replace Jack
Follow procedure
‘7. All source audio ’
trouble shooting guide.

- 18 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Tuner (TU3702)
AV Component (JK1702)
HEAD_PHONE (JK1500)
Main SOC S7LR_M1 (MDS804KKX) (IC101)
SIDE REAR
USB (JK700)
HDMI1 (JK801)
(P1101)
30P HD LVDS wafer
51P FHD LVDS wafer
(P1100)
TU_SCL / SDA
IF_P/N_MSTAR, TU_CVBS, TU_SIF
AV2_CVBS_IN AV2_R/L_IN
COMP2_Y+, AV_CVBS_IN
COMP2_R/L_IN, COMP2_Pr+/Pb+, AV_CVBS_DET
HP_LOUT/ROUT
CK+/-, D0+/-, D1+/-, D2+/-_HDMI2
DDC_SCL/SDA_2
HDMI_SIDE (MHL) (JK803)
CK+/-, D0+/-, D1+/-, D2+/-_HDMI4, MHL_CD_SENSE
DDC_SCL/SDA_4
SIDE_USB1_DM/DP
System EEPROM
(256Kbit)
IC104
NAND FLASH (1Gbit)
IC102
DDR3 SDRAM (2Gbit)
IC1201
Serial Flash (8Mbit)
IC1300
SPI_SCK/SDI/SDO/CS I2C_SCL/SDA PCM_A[0-7],…
A-MDQL[0-7], A-MDQU[0-7],…
B-MDQL[0-7], B-MDQU[0-7],…
RXA0+/-~RXA4+/-,
RXACK+/-
RXB0+/-~RXB4+/-, RXBCK+/-
SPK_R
SPK_L
8P connector P600
KEY1/2, LED_R/BUZZ, IR
AMP_SCL/SDA
AUD_MASTER_CLK,
AUD_LRCH,
AUD_LRCK, AUD_SCK
STA380 (IC3401)
OCP IC (IC802) VBUS_ENC
AV Component (JK1701)
USB1_OCD/CT L
DCDC + OCP IC
(IC401)
+5V_USB
5V_HDMI_4
HPD4/CVUS
HPD2
AVDD5V_MHL
BLOCK DIAGRAM
■ ERRC

- 19 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Tuner (TU3702)
AV Component
(JK1702)
HEAD_PHONE (JK1500)
Main SOC
S7LR_M1
(MDS804KKX)
(IC101)
SIDE REAR
USB (JK700)
HDMI1 (JK801)
(P1101)
30P HD LVDS wafer
51P FHD LVDS wafer
(P1100)
TU_SCL / SDA
IF_P/N_MSTAR, TU_CVBS, TU_SIF
AV2_CVBS_IN AV2_R/L_IN
COMP2_Y+, AV_CVBS_IN
COMP2_R/L_IN, COMP2_Pr+/Pb+, AV_CVBS_DET
SPDIF_OUT
HP_LOUT/ROUT
CK+/ - , D0+/ - , D1+/ - , D2+/ - _HDMI2
DDC_SCL/SDA_2
HDMI_SIDE (MHL) (JK803)
CK+/ - , D0+/ - , D1+/ - , D2+/ - _HDMI4, MHL_CD_SENSE
DDC_SCL/SDA_4
SIDE_USB1_DM/DP
SPDIF(Optic) (JK1001)
System EEPROM (256Kbit)
IC104
NAND FLASH (1Gbit)
IC102
DDR3 SDRAM (1Gbit X 2EA)
IC1201 / IC1202
Serial Flash
(8Mbit)
IC1300
SPI_SCK/SDI/SDO/CS I2C_SCL/SDA PCM_A[0-7],…
A-MDQL[0 - 7], A -MDQU[0 - 7],… B-MDQL[0 - 7], B -MDQU[0 - 7],…
RXA0+/ - ~RXA4+/ - , RXACK+/ - RXB0+/ -~RXB4+/ - , RXBCK+/-
SPK_R
SPK_L
8P connector P600
KEY1/2, LED_R/BUZZ, IR
AMP_SCL/SDA
AUD_MASTER_CLK,
AUD_LRCH,
AUD_LRCK,
AUD_SCK STA380
(IC3401)
OCP IC (IC802) VBUS_ENC
AV Component
(JK1701)
USB1_OCD/CTL
DCDC + OCP IC (IC401)
+5V_USB
5V_HDMI_4
HPD4/CVUS
HPD2
AVDD5V_MHL
■ Non ERRC

- 20 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
A2 A9 A10
900
200
400
540
521
530
500
301
910
200T
120
300
510
123
122
Set + Stand
Stand Base
+
Stand Body
LV1
Only LGD Module
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