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LCD TV
SERVICE MANUAL
CHASSIS : LP91J
MODEL : 32LK310 32LK310-MA
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67082603 (1102-REV00) Printed in Korea
CONTENTS
CONTENTS .............................................................................................. 2
PRODUCT SAFETY ................................................................................. 3
SPECIFICATION ....................................................................................... 6
ADJUSTMENT INSTRUCTION ................................................................ 9
TROUBLE SHOOTING ........................................................................... 14
BLOCK DIAGRAM.................................................................................. 17
EXPLODED VIEW .................................................................................. 18
SVC. SHEET ...............................................................................................
Copyright LG Electronics. Inc. All right reserved. -2- LGE Internal Use Only
Only for training and service purposes
SAFETY PRECAUTIONS
IMPORTANT SAFETY NOTICE
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 Leakage Current Hot Check (See below Figure)
Plug the AC cord directly into the AC outlet.
An isolation Transformer should always be used during the
servicing of a receiver whose chassis is not isolated from the AC Do not use a line Isolation Transformer during this check.
power line. Use a transformer of adequate power rating as this Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor
protects the technician from accidents resulting in personal injury between a known good earth ground (Water Pipe, Conduit, etc.)
from electrical shocks. and the exposed metallic parts.
Measure the AC voltage across the resistor using AC voltmeter
It will also protect the receiver and it's components from being with 1000 ohms/volt or more sensitivity.
damaged by accidental shorts of the circuitry that may be Reverse plug the AC cord into the AC outlet and repeat AC voltage
inadvertently introduced during the service operation. measurements for each exposed metallic part. Any voltage
measured must not exceed 0.75 volt RMS which is corresponds to
If any fuse (or Fusible Resistor) in this TV receiver is blown, 0.5mA.
replace it with the specified. In case any measurement is out of the limits specified, there is
possibility of shock hazard and the set must be checked and
When replacing a high wattage resistor (Oxide Metal Film Resistor, repaired before it is returned to the customer.
over 1W), keep the resistor 10mm away from PCB.
Leakage Current Hot Check circuit
Keep wires away from high voltage or high temperature parts.
AC Volt-meter
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
Good Earth Ground
be sure the set is safe to operate without damage of electrical
such as WATER PIPE,
shock. CONDUIT etc.
To Instrument's
exposed 0.15uF
Leakage Current Cold Check(Antenna Cold Check) METALLIC PARTS
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 1.5 Kohm/10W
plug prongs tied together and touch other ohm-meter lead in turn to
each exposed metallic parts such as antenna terminals, phone
jacks, etc. When 25A is impressed between Earth and 2nd Ground
If the exposed metallic part has a return path to the chassis, the for 1 second, Resistance must be less than 0.1
measured resistance should be between 1M and 5.2M. *Base on Adjustment standard
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.
Copyright LG Electronics. Inc. All right reserved. -3- LGE Internal Use Only
Only for training and service purposes
SERVICING PRECAUTIONS
CAUTION: Before servicing receivers covered by this service unit under test.
manual and its supplements and addenda, read and follow the 2. After removing an electrical assembly equipped with ES
SAFETY PRECAUTIONS on page 3 of this publication. devices, place the assembly on a conductive surface such as
NOTE: If unforeseen circumstances create conflict between the aluminum foil, to prevent electrostatic charge buildup or
following servicing precautions and any of the safety precautions on exposure of the assembly.
page 3 of this publication, always follow the safety precautions. 3. Use only a grounded-tip soldering iron to solder or unsolder ES
Remember: Safety First. devices.
4. Use only an anti-static type solder removal device. Some solder
General Servicing Precautions removal devices not classified as "anti-static" can generate
1. Always unplug the receiver AC power cord from the AC power electrical charges sufficient to damage ES devices.
source before; 5. Do not use freon-propelled chemicals. These can generate
a. Removing or reinstalling any component, circuit board electrical charges sufficient to damage ES devices.
module or any other receiver assembly. 6. Do not remove a replacement ES device from its protective
b. Disconnecting or reconnecting any receiver electrical plug or package until immediately before you are ready to install it.
other electrical connection. (Most replacement ES devices are packaged with leads
c. Connecting a test substitute in parallel with an electrolytic electrically shorted together by conductive foam, aluminum foil
capacitor in the receiver. or comparable conductive material).
CAUTION: A wrong part substitution or incorrect polarity 7. Immediately before removing the protective material from the
installation of electrolytic capacitors may result in an leads of a replacement ES device, touch the protective material
explosion hazard. to the chassis or circuit assembly into which the device will be
installed.
2. Test high voltage only by measuring it with an appropriate high CAUTION: Be sure no power is applied to the chassis or circuit,
voltage meter or other voltage measuring device (DVM, and observe all other safety precautions.
FETVOM, etc) equipped with a suitable high voltage probe. 8. Minimize bodily motions when handling unpackaged
Do not test high voltage by "drawing an arc". replacement ES devices. (Otherwise harmless motion such as
3. Do not spray chemicals on or near this receiver or any of its the brushing together of your clothes fabric or the lifting of your
assemblies. foot from a carpeted floor can generate static electricity
4. Unless specified otherwise in this service manual, clean sufficient to damage an ES device.)
electrical contacts only by applying the following mixture to the
contacts with a pipe cleaner, cotton-tipped stick or comparable General Soldering Guidelines
non-abrasive applicator; 10% (by volume) Acetone and 90% (by 1. Use a grounded-tip, low-wattage soldering iron and appropriate
volume) isopropyl alcohol (90%-99% strength) tip size and shape that will maintain tip temperature within the
CAUTION: This is a flammable mixture. range or 500°F to 600°F.
Unless specified otherwise in this service manual, lubrication of 2. Use an appropriate gauge of RMA resin-core solder composed
contacts in not required. of 60 parts tin/40 parts lead.
5. Do not defeat any plug/socket B+ voltage interlocks with which 3. Keep the soldering iron tip clean and well tinned.
receivers covered by this service manual might be equipped. 4. Thoroughly clean the surfaces to be soldered. Use a mall wire-
6. Do not apply AC power to this instrument and/or any of its bristle (0.5 inch, or 1.25cm) brush with a metal handle.
electrical assemblies unless all solid-state device heat sinks are Do not use freon-propelled spray-on cleaners.
correctly installed. 5. Use the following unsoldering technique
7. Always connect the test receiver ground lead to the receiver a. Allow the soldering iron tip to reach normal temperature.
chassis ground before connecting the test receiver positive (500°F to 600°F)
lead. b. Heat the component lead until the solder melts.
Always remove the test receiver ground lead last. c. Quickly draw the melted solder with an anti-static, suction-
8. Use with this receiver only the test fixtures specified in this type solder removal device or with solder braid.
service manual. CAUTION: Work quickly to avoid overheating the circuit
CAUTION: Do not connect the test fixture ground strap to any board printed foil.
heat sink in this receiver. 6. Use the following soldering technique.
a. Allow the soldering iron tip to reach a normal temperature
Electrostatically Sensitive (ES) Devices (500°F to 600°F)
Some semiconductor (solid-state) devices can be damaged easily b. First, hold the soldering iron tip and solder the strand against
by static electricity. Such components commonly are called the component lead until the solder melts.
Electrostatically Sensitive (ES) Devices. Examples of typical ES c. Quickly move the soldering iron tip to the junction of the
devices are integrated circuits and some field-effect transistors and component lead and the printed circuit foil, and hold it there
semiconductor "chip" components. The following techniques only until the solder flows onto and around both the
should be used to help reduce the incidence of component component lead and the foil.
damage caused by static by static electricity. CAUTION: Work quickly to avoid overheating the circuit
1. Immediately before handling any semiconductor component or board printed foil.
semiconductor-equipped assembly, drain off any electrostatic d. Closely inspect the solder area and remove any excess or
charge on your body by touching a known earth ground. splashed solder with a small wire-bristle brush.
Alternatively, obtain and wear a commercially available
discharging wrist strap device, which should be removed to
prevent potential shock reasons prior to applying power to the
Copyright LG Electronics. Inc. All right reserved. -4- LGE Internal Use Only
Only for training and service purposes
IC Remove/Replacement
Some chassis circuit boards have slotted holes (oblong) through Circuit Board Foil Repair
which the IC leads are inserted and then bent flat against the Excessive heat applied to the copper foil of any printed circuit
circuit foil. When holes are the slotted type, the following technique board will weaken the adhesive that bonds the foil to the circuit
should be used to remove and replace the IC. When working with board causing the foil to separate from or "lift-off" the board. The
boards using the familiar round hole, use the standard technique following guidelines and procedures should be followed whenever
as outlined in paragraphs 5 and 6 above. this condition is encountered.
Removal At IC Connections
1. Desolder and straighten each IC lead in one operation by gently To repair a defective copper pattern at IC connections use the
prying up on the lead with the soldering iron tip as the solder following procedure to install a jumper wire on the copper pattern
melts. side of the circuit board. (Use this technique only on IC
2. Draw away the melted solder with an anti-static suction-type connections).
solder removal device (or with solder braid) before removing the
IC. 1. Carefully remove the damaged copper pattern with a sharp
Replacement knife. (Remove only as much copper as absolutely necessary).
1. Carefully insert the replacement IC in the circuit board. 2. carefully scratch away the solder resist and acrylic coating (if
2. Carefully bend each IC lead against the circuit foil pad and used) from the end of the remaining copper pattern.
solder it. 3. Bend a small "U" in one end of a small gauge jumper wire and
3. Clean the soldered areas with a small wire-bristle brush. carefully crimp it around the IC pin. Solder the IC connection.
(It is not necessary to reapply acrylic coating to the areas). 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
"Small-Signal" Discrete Transistor copper pattern. Solder the overlapped area and clip off any
Removal/Replacement excess jumper wire.
1. Remove the defective transistor by clipping its leads as close as
possible to the component body. At Other Connections
2. Bend into a "U" shape the end of each of three leads remaining Use the following technique to repair the defective copper pattern
on the circuit board. at connections other than IC Pins. This technique involves the
3. Bend into a "U" shape the replacement transistor leads. installation of a jumper wire on the component side of the circuit
4. Connect the replacement transistor leads to the corresponding board.
leads extending from the circuit board and crimp the "U" with
long nose pliers to insure metal to metal contact then solder 1. Remove the defective copper pattern with a sharp knife.
each connection. Remove at least 1/4 inch of copper, to ensure that a hazardous
condition will not exist if the jumper wire opens.
Power Output, Transistor Device 2. Trace along the copper pattern from both sides of the pattern
Removal/Replacement break and locate the nearest component that is directly
1. Heat and remove all solder from around the transistor leads. connected to the affected copper pattern.
2. Remove the heat sink mounting screw (if so equipped). 3. Connect insulated 20-gauge jumper wire from the lead of the
3. Carefully remove the transistor from the heat sink of the circuit nearest component on one side of the pattern break to the lead
board. of the nearest component on the other side.
4. Insert new transistor in the circuit board. Carefully crimp and solder the connections.
5. Solder each transistor lead, and clip off excess lead. CAUTION: Be sure the insulated jumper wire is dressed so the
6. Replace heat sink. it does not touch components or sharp edges.
Diode Removal/Replacement
1. Remove defective diode by clipping its leads as close as
possible to diode body.
2. Bend the two remaining leads perpendicular y to the circuit
board.
3. Observing diode polarity, wrap each lead of the new diode
around the corresponding lead on the circuit board.
4. Securely crimp each connection and solder it.
5. Inspect (on the circuit board copper side) the solder joints of
the two "original" leads. If they are not shiny, reheat them and if
necessary, apply additional solder.
Fuse and Conventional Resistor
Removal/Replacement
1. Clip each fuse or resistor lead at top of the circuit board hollow
stake.
2. Securely crimp the leads of replacement component around
notch at stake top.
3. Solder the connections.
CAUTION: Maintain original spacing between the replaced
component and adjacent components and the circuit board to
prevent excessive component temperatures.
Copyright LG Electronics. Inc. All right reserved. -5- LGE Internal Use Only
Only for training and service purposes
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement.
1. Application range 3. Test method
This spec sheet is applied to LCD TV used LP91J chassis. 1) Performance: LGE TV test method followed
2) Demanded other specification
- Safety: CE, IEC specification
2. Specification - EMC : CE, IEC
Each part is tested as below without special appointment.
1) Temperature : 25±5ºC (77±9ºF), CST : 40±5ºC
2) Relative Humidity : 65±10%
3) Power Voltage
: Standard input voltage(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.
4. Electrical specification
4.1. Model Specification
No Item Specification Remark
1. Market Central and South America
2. Broadcasting system NTSC, PAL-M, PAL-N
3. Available Channel BAND NTSC
VHF 2~13
UHF 14~69
CATV 1~125
4. Receiving system Upper Heterodyne
5. Video Input NTSC, PAL-M/N 22LK310 : Rear 1EA,
26/32LK310 : Rear 1EA, Side 1EA
6. Component Input Y/Cb/Cr, Y/ Pb/Pr Rear
7. RGB Input RGB-PC, S/W Upgrade Rear
8. HDMI Input HDMI-DTV, Only PCM MODE 26/32LK310 Rear 2EA
22LK310 Rear 1EA
9. Audio Input (4EA) PC Audio, Component, AV (2EA) L/R Input (22LK310/311: AV Audio Input 1EA)
10. RS-232C Remote control, Commercial control Rear
11. USB Input (1EA) Divx, MP3, JPEG Only Side
Copyright LG Electronics. Inc. All right reserved. -6- LGE Internal Use Only
Only for training and service purposes
5. Component Video Input (Y, PB, PR)
Specification
No Remark
Resolution H-freq(kHz) V-freq(Hz) Pixel Clock(MHz)
1 720* 480 15.73 59.94 13.500 SDTV, DVD 480I( 525I)
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 27.000 SDTV 480P
5 720* 480 31.50 60.00 27.027 SDTV 480P
6 720* 576 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 56.25 50 148.5 HDTV 1080P
14 1920* 1080 67.432 59.94 148.350 HDTV 1080P
15 1920* 1080 67.5 60.00 148.5 HDTV 1080P
6. RGB
(Analog PC, RGB-DTV - NOT SUPPORT)
Specification
No Proposed Remark
Resolution H-freq(kHz) V-freq(Hz) Pixel Clock(MHz)
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 1280* 768 47.776 59.87 79.5 VESA( WXGA)
7 1360* 768 47.72 59.799 84.75 VESA( WXGA)
Copyright LG Electronics. Inc. All right reserved. -7- LGE Internal Use Only
Only for training and service purposes
7. HDMI input - PC
(Spec. out but it can be shown the picture at only HDMI/DVI IN 1 via DVI to HDMI Cable)
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remarks
1 640 x 480 31.469 59.94 25.17 VESA( VGA)
2 800 x 600 37.879 60.317 40.00 VESA( SVGA)
3 1024 x 768 48.363 60.004 65.00 VESA( XGA)
4 1280 x 768 47.776 59.87 79.5 VESA( WXGA)
5 1360 x 768 47.72 59.799 84.62 VESA( WXGA)
6 1366 x 768 47.7 60.00 84.62 WXGA
7 1280 x 1024 63.595 60.00 108.875 SXGA
8 1920 x 1080 66.647 59.988 138.625 WUXGA
8. HDMI input (DTV)
Specification
No Proposed Remarks
Resolution H-freq(kHz) V-freq(Hz) Pixel Clock(MHz)
1 720 x 480 15.73 59.94 13.500 SDTV, DVD 480I(525I) Spec. out
2 720 x 480 15.75 60.00 13.514 SDTV, DVD 480I(525I) but display.
3 720 x 576 15.625 50.00 13.500 SDTV, DVD 576I(625I) 50Hz
4 720 x 480 31.47 59.94 27 SDTV 480P
5 720 x 480 31.5 60.00 27.027 SDTV 480P
6 720 x 576 31.25 50.00 27 SDTV 576P
7 1280 x 720 44.96 59.94 74.176 HDTV 720P
8 1280 x 720 45 60.00 74.25 HDTV 720P
9 1280 x 720 37.5 50.00 74.25 HDTV 720P
10 1920 x 1080 28.125 50.00 74.25 HDTV 1080I
11 1920 x 1080 33.72 59.94 74.176 HDTV 1080I
12 1920 x 1080 33.75 60.00 74.25 HDTV 1080I
13 1920 x 1080 56.25 50.00 148.5 HDTV 1080P
14 1920 x 1080 67.432 59.94 148.350 HDTV 1080P
15 1920 x 1080 67.5 60.00 148.5 HDTV 1080P
16 1920 x 1080 27 24.00 74.25 HDTV 1080P
17 1920 x 1080 33.75 30.00 74.25 HDTV 1080P
Copyright LG Electronics. Inc. All right reserved. -8- LGE Internal Use Only
Only for training and service purposes
ADJUSTMENT INSTRUCTION
1. Application Range (2) Download steps
1) Execute `ISP Tool' program, the main window(Mstar ISP
This specification sheet is applied to all of the LCD TV, LP91J utility Vx.x.x) will be opened
chassis. 2) Click the "Connect" button and confirm "Dialog Box"
2. Specification
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 100-220 V,
50/60 Hz.
5) Before adjustment, execute Heat-Run for 5 minutes at RF
no signal.
3. Adjustment items
3.1. PCB assembly adjustment items
(1) Download the MSTAR main software
(IC800, Mstar ISP Utility)
1) Using D/L Jig
2) Using USB Memory Stick.
(2) Input Tool-Option/Area option.
(3) Download the EDID
- EDID datas are automatically download when adjusting
the Tool Option2
(4) ADC Calibration - RGB / Component
(4) Check SW Version. 3) Click the "Config." button and Change speed I2C Speed
setting : 350 Khz ~ 400 Khz
3.2. SET assembly adjustment items
(1) Input Area option
(2) Adjustment of White Balance : Auto & Manual
(3) Input Tool-Option/Area option
(4) Intelligent Sensor Inspection Guide
(5) Preset CH information
(6) Factoring Option Data input
4. PCB assembly adjustment method
4.1. Mstar Main S/W program download
4.1.1. Using D/L Jig
(1) Preliminary steps 4) Read and write bin file.
1) Connect the download jig to D-sub(RGB) jack Click "(1)Read" tab, and then load download file
(XXXX.bin) by clicking "Read".
1
Filexxx.bin
1
Filex
Copyright LG Electronics. Inc. All right reserved. -9- LGE Internal Use Only
Only for training and service purposes
5) Click "(2)Auto" tab and set as below. (3). Adjustment method
6) Click "(3)Run". - The input methods are same as other chassis.(Use IN-
7) After downloading, you can see the "(4)Pass" message. START Key on the Adjust Remote control.)
(If not changed the option, the input menu can differ the
model spec.)
Refer to Job Expression of each main chassis assembly
(EBTxxxxxxxx) for Option value
Caution : Don't Press "IN-STOP" key after completing the
function inspection.
4.3. EDID Download method
Recommend that don't connect HDMI and RGB(D-SUB) cable
when downloading the EDID. If not possible, recommend that
connect the MSPG equipment.
There are two methods of downloading the EDID data
4.1.2. Using the Memory Stick
* USB download : Service Mode 4.3.1. 1st Method
1) Insert the USB memory stick to the USB port. EDID datas are automatically downloaded when adjusting the
2) Automatically detect the SW Version. Tool Option2.
-> S/W download process is executed automatically. Automatically downloaded when pushing the enter key after
3) Show the message "Copy the file from the Memory" adjusting the tool option2.
It takes about 2 seconds.
4) After Finished the Download, Automatically DC Off -> On
4.3.2. 2nd Method
* Caution :
Must be checked that the tool option is right or not.
If tool option is wrong, HDMI EDID data could not be
downloaded well.
1) Press the ADJ key
2) Move to the EDID D/L and Press the right direction key(G)
3) Press the right direction key(G) at Start.
4) After about a few seconds, appear "OK", then complete.
5) If the TV is Turn on, Check the updated SW Version and
tool option.
4.2. Input tool option.
Adjust tool option refer to the BOM. 4.3.3. RS-232C command Method
- Tool Option Input : PCBA Check Process (1) Command : AE 00 10
- Area Option Input : Set Assembly Process
* Caution
After Input Tool Option and AC off Don't connect HDMI and RGB(D-SUB) cable when
Before PCBA check, you have to change the Tool option and downloading the EDID.
have to AC off/on (Plug out and in) If the cables are connected, Downloading of EDID could be
(If missing this process, set can operate abnormally) failed.
(1) Profile : Must be changed the option value because being
different with some setting value depend on module
maker, inch and market
(2) Equipment : adjustment remote control.
Copyright LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only
Only for training and service purposes
4.3.4. EDID data 4.4. ADC Calibration
(1) Analog(RGB): 128bytes> 4.4.1. ADC Calibration - Component (Using External pattern)
0 1 2 3 4 5 6 7 8 9 A B C D E F
(1) Required Equipments
0 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01
- Remote controller for adjustment
10 01 15 01 03 08 46 27 78 0A D9 B0 A3 57 49 9C 25
- MSPG-925F/MSPG-1025/MSPG-3233 Pattern Generator
20 11 49 4B A1 08 00 45 40 01 01 61 40 01 01 01 01
30 01 01 01 01 01 01 1B 21 50 A0 51 00 1E 30 48 88
(2) Process
40 35 00 BC 88 21 00 00 1C 0E 1F 00 80 51 00 1E 30
1) Change the Input to Component1 or 2 mode.
50 40 80 37 00 BC 88 21 00 00 18 00 00 00 FC 00 4C
2) Input the Component 480i@60 Hz 100 % Color Bar
60 47 20 54 56 0A 20 20 20 20 20 20 20 00 00 00 FD
YPbPr signal into Component1 or 2.
70 00 3A 3F 1C 44 0F 00 0A 20 20 20 20 20 20 00 55
(MSPG-925F Model: 209 / Pattern: 65 )
(2) HDMI 1 : 256Bytes
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 15 01 03 80 46 27 78 0A D9 B0 A3 57 49 9C 25
20 11 49 4B 21 08 00 45 40 01 01 61 40 01 01 01 01
30 01 01 01 01 01 01 01 1D 00 72 51 D0 1E 20 6E 28
40 55 00 C4 8E 21 00 00 1E 1B 21 50 A0 51 00 1E 30
50 48 88 35 00 BC 77 21 00 00 1C 00 00 00 FC 00 4C
60 47 20 54 56 0A 20 20 20 20 20 20 20 00 00 00 FD
70 00 3A 3F 1C 44 0F 00 0A 20 20 20 20 20 20 01 C2
3) Press ADJ key on R/C for adjustment.
80 02 03 25 F1 4F 84 07 01 16 02 03 11 12 13 14 05
4) Enter Password number. Password is "0 0 0 0".
90 20 22 1F 10 23 09 07 07 83 01 00 00 68 03 0C 00
A0 10 00 80 1E 00 01 1D 00 80 51 D0 1C 20 40 80 35
5) Select "0. ADC calibration : Component" by using D/E
B0 00 BC 88 21 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10
(CH +/-) and press ENTER(A).
C0 3E 96 00 13 8E 21 00 00 18 8C 0A A0 14 51 F0 16
6) ADC adjustment is executed automatically .
D0 00 26 7C 43 00 C4 8E 21 00 00 98 01 1D 80 18 71 7) When ADC adjustment is finished, this OSD appear.
E0 1C 16 20 58 2C 25 00 C4 8E 21 00 00 9E 00 00 00
OK
F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 2A
4.4.2. ADC Calibration - RGB
(3) HDMI 2 : 256Bytes
4.4.2.1. Method of Using External pattern
0 1 2 3 4 5 6 7 8 9 A B C D E F
(1) Required Equipments
0 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01
- Remote controller for adjustment
10 01 15 01 03 80 46 27 78 0A D9 B0 A3 57 49 9C 25
- MSPG-925F/MSPG-1025/MSPG-3233 Pattern Generator
20 11 49 4B 21 08 00 45 40 01 01 61 40 01 01 01 01
30 01 01 01 01 01 01 01 1D 00 72 51 D0 1E 20 6E 28
(2) Process
40 55 00 C4 8E 21 00 00 1E 1B 21 50 A0 51 00 1E 30
1) Change the Input to RGB mode..
50 48 88 35 00 BC 77 21 00 00 1C 00 00 00 FC 00 4C
2) Input the PC 1024x768@60 Hz Horizontal Color Bar
60 47 20 54 56 0A 20 20 20 20 20 20 20 00 00 00 FD
signal into RGB.
70 00 3A 3F 1C 44 0F 00 0A 20 20 20 20 20 20 01 C2
(MSPG-925F Model: 60 / Pattern: 65 )
80 02 03 25 F1 4F 84 07 01 16 02 03 11 12 13 14 05
90 20 22 1F 10 23 09 07 07 83 01 00 00 68 03 0C 00
A0 20 00 80 1E 00 01 1D 00 80 51 D0 1C 20 40 80 35
B0 00 BC 88 21 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10
C0 3E 96 00 13 8E 21 00 00 18 8C 0A A0 14 51 F0 16
D0 00 26 7C 43 00 C4 8E 21 00 00 98 01 1D 80 18 71
E0 1C 16 20 58 2C 25 00 C4 8E 21 00 00 9E 00 00 00
F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1A
3) Press ADJ key on R/C for adjustment.
4) Enter Password number. Password is "0 0 0 0".
5) Select "0. ADC calibration : RGB" by using D/E(CH +/-)
and press ENTER(A).
6) ADC adjustment is executed automatically .
7) When ADC adjustment is finished, this OSD appear
OK
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Only for training and service purposes
4.4.2.1. Method of Using Internal pattern 5. PCB assembly adjustment method
(1) Apply model
22/26/32LK310/311 5.1. Input Area-Option
(1) Profile : Must be changed the Area option value because
(2) Process being different of each Country's Language and
1) Change the Input to RGB mode.. signal Condition.
2) Press ADJ key on R/C for adjustment. (2) Equipment : adjustment remote control.
3) Enter Password number. Password is "0 0 0 0". (3) Adjustment method
4) Select "0. ADC calibration : RGB" by using D/E(CH +/-) - The input methods are same as other chassis.(Use IN-
and press ENTER(A). START Key on the Adjust Remote control.)
5) ADC adjustment is executed automatically . Refer to Job Expression of each main chassis ass'y
6) When ADC adjustment is finished, this OSD appear. (EBTxxxxxxxx) for Option value.
OK
5.2. Adjustment of White Balance
* Caution : No need to connect external input cable. (For Automatic Adjustment)
* Caution : Adjustment result is applied after SET Off/On - Purpose : Adjust the color temperature to reduce the
deviation of the module color temperature.
4.5. Check SW Version - Principle : To adjust the white balance without the saturation,
(1) Method Fix the one of R/G/B gain to 192 (default data)
1) Push In-star key on Adjust remote-control. and decrease the others.
2) SW Version check - Adjustment mode : Three modes - Cool / Medium / Warm
Check "SW VER : V3.xx" - Required Equipment
1) Remote controller for adjustment
MODEL :
SW VER :
32LK310
V3.04
2) Color Analyzer : CA100+ or CA-210 or same product -
Mod e : Hom e Use UTT 6 LCD TV( ch : 9 ),
(should be used in the calibrated ch by CS-1000)
ADC CAL. RGB : NG
RGB: OK HDMI1 : NG
3) Auto W/B adjustment instrument(only for Auto adjustment)
Comp onent SD : OK HDMI2 : NG
Comp onent HD : OK
5.2.1 Adjustment of White Balance (For automatic adjustment)
Tool Option 1 816
Tool Option 2 4181
Area Option 40
Option 1 0
Option 2 0
System Con trol
System Con tro l 2
Power Off History
Davinci/Auto Test
Area Option ETC
Lang. Group NTSC-ALL
* LP91J Support RS-232C & I2C Interface For ADC/DDC
Adjustment.
(1) Enter the adjustment mode of DDC
- Set command delay time : 50ms
- Enter the DDC adjustment mode at the same time heat-
run mode when pushing the power on by power only key
- Maintain the DDC adjustment mode with same condition
of Heat-run => Maintain after AC off/on in status of Heat-
run pattern display)
(2) Release the DDC adjustment mode
- Release the adjust mode after AC off/on or std-by off/on
in status of finishing the Hear-run mode
- Release the Adjust mode when receiving the aging off
command(WB 00 FF) from adjustment equipment.
- Need to transmit the aging off command to TV set after
finishing the adjustment.
- Check DDC adjust mode release by exit key and release
DDC adjust mode)
(3) Enter the adjust mode of white balance)
- Enter the white balance adjustment mode with aging
command (F3, 00, 00)
(4) Release the adjust mode of white balance
- Enter the white balance adjustment mode with aging
command(F3, 00, FF)
* Luminance min value is 150cd in the Cool/Medium/Warm
mode(For LCD)
Copyright LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only
Only for training and service purposes
5.2.2. Adjustment of White Balance (for Manual adjustment) - To check the Coordinates of White Balance, you have to
(1) Color analyzer(CA100+, CA210) should be used in the measure at the below conditions.
calibrated ch by CS-1000 Picture Mode : Select Vivid and change Dynamic Contrast :
(2) Operate the zero-calibration of the CA100+ or CA-210, Off, Dynamic Colour : Off -> Picture Mode change ->
then stick sensor to the module when adjusting. Vivid(User)
(3) For manual adjustment, it is also possible by the following (If you miss the upper condition, the coordinates of W/B can
sequence. be lower than the spec.
1) Select white pattern of heat-run by pressing "POWER
ON" key on remote control for adjustment 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) Change to the AV mode by remote control.
4) Input external pattern (85% white pattern)
5) Push the ADJ key -> Enter "0000" (Password)
6) Select "3. W/B ADJUST"
7) Enter the W/B ADJUST Mode
8) Stick the sensor to the center of the screen and select
each items (Red/Green/Blue Gain and Offset) using
D/E(CH +/-) key on R/C..
9) Adjust R/ G/ B Gain using F/G(VOL +/-) key on R/C.
10) Adjust three modes all (Cool/ Medium/ Warm) : Fix the
one of R/G/B gain and change the others
11) When adjustment is completed, Enter "COPY ALL".
12) Exit adjustment mode using EXIT key on R/C.
* CASE
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
(4) Standard color coordinate and temperature when using the
CA100+ or CA210 equipment
Coordinate
Mode Temp uv
x y
Cool 0.269 ± 0.002 0.273 ± 0.002 13,000 K 0.000
Medium 0.285 ± 0.002 0.293 ± 0.002 9,300 K 0.000
Warm 0.313 ± 0.002 0.329 ± 0.002 6,500 K 0.003
- 22LK310/311(Small size inch's color coordinate is different
from others, so use below table)
Coordinate
Mode Temp uv
x y
Cool 0.285 ± 0.002 0.293 ± 0.002 9,300 K 0.000
Medium 0.295 ± 0.002 0.305 ± 0.002 8,000 K 0.000
Warm 0.313 ± 0.002 0.329 ± 0.002 6,500 K 0.003
Copyright LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only
Only for training and service purposes
TROUBLESHOOTING
No power : [A] PROCESS
(LED indicator off)
Fail
Check 24V, 12V, 3.5V Check short of Main B/D
of Power B/D or Change Power B/D
Pass
Fail Fail
Check Output of Check short of IC1001, Re-soldering or Change defect
IC1001, IC1003, IC1007 IC1003, IC1007 part of IC1001, IC1003, IC1007
Pass
Pass
Change IC1002, IC1008, Q1003
Fail
Check LED Assembly Change LED Assembly
Pass
Check P400 Connector
No Raster [B]: Process
Pass
Check LED status
Repeat A PROCESS
On Display Unit Fail
Pass
Check Panel Link Cable Change Panel Link Cable
Or Module Fail Or Module
Pass
Check Inverter Connector Change Inverter Connector
Or Inverter Fail Or Inverter
Pass
Check Output of IC802 Change IC802
Fail
Pass
Check LVDS Cable Change LVDS cable
Fail
Copyright LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only
Only for training and service purposes
No Raster on PC Signal
Pass
Check Input source Cable
And Jack
Pass
Check the Input/Output Re-soldering or
Of J202 Fail Change the defect part
Pass
Check the Input/Output Re-soldering or
Of IC201 Fail Change the defect part,
Check RGB EDID Data
Pass
Check the Input/Output Re-soldering or
Of IC800 Fail Change the defect part
Pass
Repeat [A], & [B] Process
No Raster on COMMPONENT Signal No Raster on HDMI Signal
Pass
Pass
Check Input source
Cable And Jack
Check Input source
Cable And Jack
Pass
Pass Check the Input/Output Re-soldering or
of JK301, JK302 Fail Change the defect part
Check The Input/Output Re-soldering or
Of JK101 Fail Change the defect part
Pass
Re-soldering or
Pass Check the Input/Output Change the defect part
of IC300, IC301 Fail Check HDMI EDID Data
Re-download HDCP
Check the Input/Output Re-soldering or
Of IC800 Fail Change the defect part Pass
Check the Input/Output Re-soldering or
of IC800 Fail Change the defect part
Repeat [A], & [B] Process Pass
Repeat [A], & [B] Process
Copyright LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only
Only for training and service purposes
No Raster On AV (Video, S-Video)Signal No Signal On TV(RF) Signal
Pass Pass
Check Input source
Cable And Jack Check Input source
Cable And Jack
Pass
Pass
Check The Input/Output Re-soldering or
of JK102 Change the defect part Check The Input/Output Re-soldering or
Fail
Of TU500 Fail Change the defect part
Pass
Pass
Check the Input/Output Re-soldering or
of IC800 Fail Change the defect part Check the Input/Output Re-soldering or
of IC800 Fail Change the defect part
Pass
Pass
Repeat [A], & [B] Process