Lg 47lh41-Ue.accvlhr Service Manual
Transcript of Lg 47lh41-Ue.accvlhr Service Manual
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LCD TV
SERVICE MANUAL
CAUTIONBEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : LA92G
MODEL : 47LH41 47LH41-UE
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
PRODUCT SAFETY ..................................................................................3
SPECIFICATION ........................................................................................6
ADJUSTMENT INSTRUCTION ...............................................................15
TROUBLE SHOOTING............................................................................19
BLOCK DIAGRAM...................................................................................26
EXPLODED VIEW .................................................................................. 29
SVC. SHEET ...............................................................................................
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SAFETY PRECAUTIONS
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in theSchematic 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 1W), keep the resistor 10mm 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 exposedmetallic 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 1M and 5.2M.
When the exposed metal has no return path to the chassis thereading 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 1.5K/10watt resistor in parallel with a 0.15uF 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
0.5mA.
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
1.5 Kohm/10W
To InstrumentsexposedMETALLIC PARTS
Good Earth Groundsuch as WATER PIPE,
CONDUIT etc.
AC Volt-meter
When 25A is impressed between Earth and 2nd Ground
for 1 second, Resistance must be less than 0.1
*Base on Adjustment standard
IMPORTANT SAFETY NOTICE
0.15uF
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CAUTION: Before servicing receivers covered by this service
manual and its supplements and addenda, read and follow the
SAFETY PRECAUTIONSon page 3 of this publication.
NOTE: If unforeseen circumstances create conflict between the
following servicing precautions and any of the safety precautions onpage 3 of this publication, always follow the safety precautions.
Remember: Safety First.
General Servicing Precautions
1. Always unplug the receiver AC power cord from the AC power
source before;
a. Removing or reinstalling any component, circuit board
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 anexplosion 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 specified 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 flammable mixture.
Unless specified 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 fixtures specified in this
service manual.
CAUTION: Do not connect the test fixture ground strap to any
heat sink in this receiver.
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid-state) devices can be damaged easily
by static electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices. Examples of typical ES
devices are integrated circuits and some field-effect transistors and
semiconductor "chip" components. The following techniques
should be used to help reduce the incidence of component
damage 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.
Alternatively, obtain and wear a commercially available
discharging wrist strap device, which should be removed toprevent 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
exposure of the assembly.3. Use only a grounded-tip soldering iron to solder or unsolder ES
devices.
4. Use only an anti-static type solder removal device. Some solder
removal devices not classified as "anti-static" can generate
electrical charges sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate
electrical charges sufficient 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
electrically 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 materialto the chassis or circuit assembly into which the device will be
installed.
CAUTION: Be sure no power is applied to the chassis or circuit,
and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged
replacement ES devices. (Otherwise harmless motion such as
the brushing together of your clothes fabric or the lifting of your
foot from a carpeted floor can generate static electricity
sufficient to damage an ES device.)
General Soldering Guidelines
1. Use a grounded-tip, low-wattage soldering iron and appropriate
tip size and shape that will maintain tip temperature within the
range or 500F to 600F.
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 1.25cm) 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.
(500F to 600F)
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
(500F to 600F)
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 flows onto and around both the
component 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.
SERVICING PRECAUTIONS
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IC Remove/Replacement
Some chassis circuit boards have slotted holes (oblong) through
which the IC leads are inserted and then bent flat against the
circuit foil. When holes are the slotted type, the following technique
should be used to remove and replace the IC. When working with
boards using the familiar round hole, use the standard technique
as outlined in paragraphs 5 and 6 above.
Removal
1. Desolder and straighten each IC lead in one operation by gently
prying up on the lead with the soldering iron tip as the solder
melts.
2. Draw away the melted solder with an anti-static suction-type
solder removal device (or with solder braid) before removing the
IC.
Replacement
1. Carefully insert the replacement IC in the circuit board.
2. Carefully bend each IC lead against the circuit foil pad and
solder it.
3. Clean the soldered areas with a small wire-bristle brush.
(It is not necessary to reapply acrylic coating to the areas).
"Small-Signal" Discrete Transistor
Removal/Replacement
1. Remove the defective transistor by clipping its leads as close as
possible to the component body.
2. Bend into a "U" shape the end of each of three leads remaining
on the circuit board.
3. Bend into a "U" shape the replacement transistor leads.
4. Connect the replacement transistor leads to the corresponding
leads extending from the circuit board and crimp the "U" with
long nose pliers to insure metal to metal contact then solder
each connection.
Power Output, Transistor Device
Removal/Replacement
1. Heat and remove all solder from around the transistor leads.
2. Remove the heat sink mounting screw (if so equipped).
3. Carefully remove the transistor from the heat sink of the circuit
board.
4. Insert new transistor in the circuit board.
5. Solder each transistor lead, and clip off excess lead.
6. Replace heat sink.
Diode Removal/Replacement
1. Remove defective diode by clipping its leads as close as
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 diodearound 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 toprevent excessive component temperatures.
Circuit Board Foil Repair
Excessive heat applied to the copper foil of any printed circuit
board will weaken the adhesive that bonds the foil to the circuit
board causing the foil to separate from or "lift-off" the board. The
following guidelines and procedures should be followed whenever
this condition is encountered.
At IC Connections
To repair a defective copper pattern at IC connections use the
following procedure to install a jumper wire on the copper pattern
side of the circuit board. (Use this technique only on IC
connections).
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 copperpattern 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
connected 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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SPECIFICATIONNOTE : Specifications and others are subject to change without notice for improvement.
4. General specification
1. Application range
This specification is applied to the LCD TV used LA92Gchassis.
2. Requirement for TestEach part is tested as below without special appointment.
1) Temperature : 255C (779F), CST : 405C2) Relative Humidity : 6510%3) Power Voltage : Standard input voltage(100~240V@50/60Hz)
* 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 inaccordance 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 followed2) Demanded other specification- Safety: UL, CSA, IEC specification, CE
- EMC: FCC, ICES, IEC specification, CE
No Item Specification Remark
1 Display Screen Device 47 wide Color Display Module 1920 x1080
2 Aspect Ratio 16:9
3 LCD Module LC470WUH-SBA1(without inverter ) FHD+Tconless 47LH40-UA
4 Available Channel 1) VHF : 02 ~ 13
2) UHF : 14 ~ 69
3) DTV : 02 ~ 69
4) CATV : 01 ~135
5) CADTV : 01 ~ 135
5 Operating Environment Temp.:0 ~ 40 deg
Humidity : ~ 80 %
6 Storage Environment Temp.:-20 ~ 60 deg
Humidity : ~ 85 %
7 Input Voltage AC100 ~240V,50/60Hz
8 Tuning system FS
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5. Chroma& Brightness5.1 Module optical specification
No. Item Specification Min. Typ. Max. Remark
1. Max Luminance Modele 400 500 cd/m2
(Center1-point/ Ful white pattern)
2. Luminance uniformity Luminance 77 %
3. Contrast Ratio 1000: 1 1400: 1
4000: 1(DCR) 50000:1(DCR)
WX Typ 0.279 TypWhite
WY -0.03 0.292 +0.03
4. Color Coordinates Xr 636RED
Yr 334
Xg 290Green
Yg 608
Xb 145Blue
Yb 064
5. Color Temperatue Cool 0.274 0.276 0.278 85% Full white pattern
0.281 0.283 0.285 **The W/B Tolerance is
Medium 0.283 0.285 0.287 0.015 for Adjustment
0.291 0.293 0.295 Dynamic contrast :off
Warm 0.311 0.313 0.315 Dynamic color :off
0.327 0.329 0.331 Energy saving mode :off
6. Color Distortion, DG 10.0 %
7. Color Distortion,DP 10.0 deg
8. Color S/N,AM/FM 43.0 dB
9. Color Killer Sensitivity -80 dB
* Max Luminance &Contrast measure standard specification
- Max Luminance measure specification
1) In non-impressed condition, measure peak brightness displayable as much as possible LCD module.
2) Measuring instrument: CA-210 or a sort of Color Analyzer.
3) Pattern Generator :VG- 828 or a sort of digital pattern generator (displayable Full White &1/25 White Window pattern)
4) Measure condition
Test pattern: in center,1/5(H)*1/5(V) of Window Pattern (white pattern in non-impressed condition)
SET condition: Contrast &Brightness Level 100%
Environment condition : Dark room in the non outside light
Video menu option condition
5) Measurement
Do heat-run LCD module at 30minutes in normal temperature (25C)by using full white pattern of 15%signal level(38 gray level).
Impress test pattern signal in 1/5(H)*1/5(V)White Window of 100%(255Gray Level)
measure 3 times brightness of central white window,and mark peak brightness in max brightness degree
measure the same condition in video signal /RGB signal.
- Luminance uniformity measure specification
1) Impress 100%(255Gray Level) full white pattern at the same peak brightness measurement.
2) Measure average brightness in 5 points.
Signal Picture Mode Dynamic Contrast Dynamic Color Black Level
RF NTSC-M Vivid High High Low
AV NTSC-J Vivid High High High
Component 720P Vivid High High High
RGB 1024x768 Vivid NA NA NA
HDMI DTV 720P Vivid High High Low
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- Contrast ratio measure specification
1) Test display signal :30*30 dots White Window signal &all Black Raster signal
2) Dark room measure condition: Using touch type Color analyzer CA-210 Dark room in the non outside light
3) Bright room measure condition: In bright room of 150Lx illumination in the panel surface, locate a source of light on the above45of the panel surface.
4) Measure method
In standard test condition,impress 30*30 dots White Window Pattern signal .
Measure center peak brightness degree Lw of white window
Impress black Raster signal as contrast ratio measurement signal.
Measure black brightness degree Lb of PDP central
Calculate the following numerical formula.
Contrast ratio =Lw /Lb
If it does not use Prior measurement, use generally simple test measurement. The Correct measure specification is followed
by IEC61988-2/CD,JAPAN EIAJ-2710
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A: H/ 4mm
B: V/ 4mm
@ H,V: Active Area
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6. Component Video Input (Y, CB/PB, CR/PR)
NoSpecification
RemarkResolution H-freq(kHz) V-freq(Hz) Pixel Clock(MHz)
1. 720*480 15.73 60 13.5135 SDTV ,DVD 480I
2. 720*480 15.73 59.94 13.5 SDTV ,DVD 480I
3. 720*480 31.47 60 27.027 SDTV 480P
4. 720*480 31.47 59.94 27.0 DTV 480P
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 33.75 60.00 74.25 HDTV 1080I
8. 1920*1080 33.72 59.94 74.176 HDTV 1080I
9. 1920*1080 67.500 60 148.50 HDTV 1080P
10. 1920*1080 67.432 59.939 148.352 HDTV 1080P
11. 1920*1080 27.000 24.000 74.25 HDTV 1080P
12. 1920*1080 26.97 23.94 74.176 HDTV 1080P
13. 1920*1080 33.75 30.000 74.25 HDTV 1080P
14. 1920*1080 33.71 29.97 74.176 HDTV 1080P
NoSpecification
RemarkResolution H-freq(kHz) V-freq(Hz) Pixel Clock(MHz)
1. 640*350 31.468 70.09 25.17 EGA
2. 720*400 31.469 70.08 28.32 DOS
3. 640*480 31.469 59.94 25.17 VESA(VGA)
4. 640*480 37.861 72.80 31.50 VESA(VGA)
5. 640*480 37.500 75.00 31.50 VESA(VGA)
6. 800*600 35.156 56.25 36.00 VESA(SVGA)
7. 800*600 37.879 60.31 40.00 VESA(SVGA)
8. 800*600 48.077 72.18 50.00 VESA(SVGA)
9. 800*600 46.875 75.00 49.50 VESA(SVGA)
10. 1024*768 48.363 60.00 65.00 VESA(XGA)
11. 1024*768 56.476 70.06 75.00 VESA(XGA)
12. 1024*768 60.023 75.02 78.75 VESA(XGA)
13. 1280*768 47.776 59.870 79.5 CVT(WXGA)
14. 1280*768 60.289 74.893 102.25 CVT(WXGA)
15. 1360*768 47.712 60.015 85.50 VESA (WXGA)
16. 1280*1024 63.981 60.020 108.00 VESA (SXGA)
17. 1280*1024 79.976 75.025 135 VESA (SXGA)
18. 1600*1200 75.00 60.00 162 VESA (UXGA)
19. 1920*1080 66.587 59.934 148.5 HDTV 1080P
7. RGB7.1 PC INPUT
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7.2 EDID7.2.1 Equpment
Adj. R/C
Since embedded EDID data is used, EDID download jig, HDMI cable and D-sub cable are not need.7.2.2 Download method
Press Adj. key On the Adj. R/C, press Adj. key then select EDID D/L. By pressing Enter key, EDID download will begin.
1) If Download is successful, OK is displayed.2) If Download is a failure, NG is displayed.3) Re-try download.
7.2.3 EDID Data
Reference: Download is only possible in POWER ON MODE.
EDID Block 0 table =
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 00 11 01 03 18 73 41 96 0A CF 74 A3 57 4C B0 23
20 09 48 4C AF CF 00 31 40 45 40 61 40 81 80 A9 40
30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 C4 8E 21 00 00 1A 02 3A 80 18 71 38 2D 4050 58 2C 45 00 C4 8E 21 00 00 1E 00 00 00 FD 00 30
60 58 1F 64 11 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 F6
EDID Block 1 table =
0 1 2 3 4 5 6 7 8 9 A B C D E F
0 02 03 04 00 0E 1F 00 80 51 00 1E 30 40 80 37 00
10 C4 8E 21 00 00 1C F1 27 00 A0 51 00 25 30 50 80
20 37 00 C4 8E 21 00 00 1C 26 36 80 A0 70 38 1F 40
30 30 20 25 00 C4 8E 21 00 00 0A 00 00 00 00 00 00
40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
50 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 BC
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8. HDMI Input (PC/DTV)8.1 PC Mode
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark
1 640*350 31.468 70.09 25.17 EGA
2 720*400 31.469 70.08 28.32 DOS3 640*480 31.469 59.94 25.17 VESA(VGA)
4 640*480 37.861 72.80 31.50 VESA(VGA)
5 640*480 37.500 75.00 31.50 VESA(VGA)
6 800*600 35.156 56.25 36.00 VESA(SVGA)
7 800*600 37.879 60.31 40.00 VESA(SVGA)
8 800*600 48.077 72.18 50.00 VESA(SVGA)
9 800*600 46.875 75.00 49.50 VESA(SVGA)
10 1024*768 48.363 60.00 65.00 VESA(XGA)
11 1024*768 56.476 70.06 75.00 VESA(XGA)
12 1024*768 60.023 75.02 78.75 VESA(XGA)
13 1280*768 47.776 5 9.870 79.5 CVT(WXGA)
14 1360*768 47.712 60.015 85.50 VESA (WXGA)
15 1280*1024 63.981 60.020 108.00 VESA (SXGA)
16 1280*1024 79.976 75.025 135 VESA (SXGA)
17 1600*1200 75.00 60.00 162 VESA (UXGA)
18 1920*1080 7.5 60 148.5 HDTV 1080P
8.2 DTV Mode
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark
1 720*480 31.47 60 27.027 SDTV 480P
2 720*480 31.47 59.94 27.00 SDTV 480P
3 1280*720 45.00 60.00 74.25 HDTV 720P
4 1280*720 44.96 59.94 74.176 HDTV 720P
5 1920*1080 33.75 60.00 74.25 HDTV 1080I
6 1920*1080 33.72 59.94 74.176 HDTV 1080I
7 1920*1080 67.500 60 148.50 HDTV 1080P
8 1920*1080 67.432 59.939 148.352 HDTV 1080P
9 1920*1080 27.000 24.000 74.25 HDTV 1080P
10 1920*1080 26.97 23.94 74.176 HDTV 1080P
11 1920*1080 33.75 30.000 74.25 HDTV 1080P
12 1920*1080 33.71 29.97 74.176 HDTV 1080P
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8.3 EDID Data
HDMI I[C/S: 8A27]
20 09 48 4C AF CF 00 31 40 45 40 61 40 81 80 A9 40
30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 C4 8E 21 00 00 1E 02 3A 80 18 71 38 2D 40
50 58 2C 45 00 C4 8E 21 00 00 1E 00 00 00 FD 00 30
60 58 1F 64 11 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 8A
EDID Block 1 table =
0 1 2 3 4 5 6 7 8 9 A B C D E F0 02 03 18 F1 47 84 05 03 02 20 22 10 23 15 07 50
10 67 03 0C 00 10 00 B8 2D 01 1D 80 18 71 1C 16 20
20 58 2C 25 00 C4 8E 21 00 00 9E 01 1D 00 72 51 D0
30 1E 20 62 28 55 00 C4 8E 21 00 00 1E 8C 0A D0 8A
40 20 E0 2D 10 10 3E 96 00 C4 8E 21 00 00 18 8C 0A
50 D0 8A 20 E0 2D 10 10 3E 96 00 13 8E 21 00 00 18
60 26 36 80 A0 70 38 1F 40 30 20 25 00 C4 8E 21 00
70 00 1A 00 00 00 00 00 00 00 00 00 00 00 00 00 27
EDID Block 0 table =
0 1 2 3 4 5 6 7 8 9 A B C D E F0 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01
10 00 11 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23
HDMI II[C/S: 8A17]
EDID Block 0 table =
0 1 2 3 4 5 6 7 8 9 A B C D E F0 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01
10 00 11 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23
20 09 48 4C AF CF 00 31 40 45 40 61 40 81 80 A9 40
30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 C4 8E 21 00 00 1E 02 3A 80 18 71 38 2D 40
50 58 2C 45 00 C4 8E 21 00 00 1E 00 00 00 FD 00 30
60 58 1F 64 11 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 8A
EDID Block 1 table =
0 1 2 3 4 5 6 7 8 9 A B C D E F0 02 03 18 F1 47 84 05 03 02 20 22 10 23 15 07 50
10 67 03 0C 00 20 00 B8 2D 01 1D 80 18 71 1C 16 20
20 58 2C 25 00 C4 8E 21 00 00 9E 01 1D 00 72 51 D0
30 1E 20 62 28 55 00 C4 8E 21 00 00 1E 8C 0A D0 8A
40 20 E0 2D 10 10 3E 96 00 C4 8E 21 00 00 18 8C 0A
50 D0 8A 20 E0 2D 10 10 3E 96 00 13 8E 21 00 00 18
60 26 36 80 A0 70 38 1F 40 30 20 25 00 C4 8E 21 00
70 00 1A 00 00 00 00 00 00 00 00 00 00 00 00 00 17
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C 2009
HDMI III[C/S: 8A07]
EDID Block 0 table =
0 1 2 3 4 5 6 7 8 9 A B C D E F0 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01
10 00 11 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23
20 09 48 4C AF CF 00 31 40 45 40 61 40 81 80 A9 40
30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 C4 8E 21 00 00 1E 02 3A 80 18 71 38 2D 40
50 58 2C 45 00 C4 8E 21 00 00 1E 00 00 00 FD 00 30
60 58 1F 64 11 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 8A
EDID Block 1 table =
0 1 2 3 4 5 6 7 8 9 A B C D E F
0 02 03 18 F1 47 84 05 03 02 20 22 10 23 15 07 50
10 67 03 0C 00 30 00 B8 2D 01 1D 80 18 71 1C 16 20
20 58 2C 25 00 C4 8E 21 00 00 9E 01 1D 00 72 51 D0
30 1E 20 62 28 55 00 C4 8E 21 00 00 1E 8C 0A D0 8A
40 20 E0 2D 10 10 3E 96 00 C4 8E 21 00 00 18 8C 0A
50 D0 8A 20 E0 2D 10 10 3E 96 00 13 8E 21 00 00 18
60 26 36 80 A0 70 38 1F 40 30 20 25 00 C4 8E 21 00
70 00 1A 00 00 00 00 00 00 00 00 00 00 00 00 00 07
HDMI IV[C/S: 8AF7]
EDID Block 0 table =
0 1 2 3 4 5 6 7 8 9 A B C D E F0 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01
10 00 11 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23
20 09 48 4C AF CF 00 31 40 45 40 61 40 81 80 A9 40
30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
40 36 00 C4 8E 21 00 00 1E 02 3A 80 18 71 38 2D 40
50 58 2C 45 00 C4 8E 21 00 00 1E 00 00 00 FD 00 30
60 58 1F 64 11 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 8A
EDID Block 1 table =
0 1 2 3 4 5 6 7 8 9 A B C D E F0 02 03 18 F1 47 84 05 03 02 20 22 10 23 15 07 50
10 67 03 0C 00 40 00 B8 2D 01 1D 80 18 71 1C 16 20
20 58 2C 25 00 C4 8E 21 00 00 9E 01 1D 00 72 51 D0
30 1E 20 62 28 55 00 C4 8E 21 00 00 1E 8C 0A D0 8A
40 20 E0 2D 10 10 3E 96 00 C4 8E 21 00 00 18 8C 0A
50 D0 8A 20 E0 2D 10 10 3E 96 00 13 8E 21 00 00 18
60 26 36 80 A0 70 38 1F 40 30 20 25 00 C4 8E 21 00
70 00 1A 00 00 00 00 00 00 00 00 00 00 00 00 00 F7
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C 2009
9. DIGITAL Part
No Item Standard Unit Remark
1. VSB Receiving CH.2 ~69CH
1 ~135CH(CATV)
1 ~135CH(CADTV))
2. Video Resolution ATSC 18 FORMAT
3. Audio Bit Resolution 32,40,48,56,64,80,96,112,128,160, Kbps
192,224,256,320384,448,512,576,640
4. VSB RF Input 75 unbalancedF type Connector input
5. Sync Stable Time Under 3.0 SEC
10. Power
No Item Min Typ Max Unit Remark
1. Power On/Off 10000 times
2. DC Voltage Inverter Voltage 21.6 24 26.4 V
Logic Voltage(Vcc) 4.8 5 5.3 V
Sound Amp Vcc 15.0 24.0/20. 0 .26 V PSU 24V ,Lips 20V
Tuner 5V 4.75 5.0 5.25 V
VSC Vcc 12V 11.0 12.0 13.0 V
5V 4.5 5.0 5.5 V
No operation 0 0.5 1 V Inside Temp.Under 20deg.
3. AC Power Shut Down Voltage 90 264 V Wide Range PSU
11. Mechanical specificationNo Item Content Unit
1 Protrusion Satisfy appearance inspection LG(51)G2-2001
2 Appearance quality Satisfy appearance inspection LG(51)G1-10303 Print specification Distinguish printed matter at a distance of 40cm
4 Product Before Packing 1153.2 (W)X 791.5 (H)X 337.4 (D) mm
Dimension After Packing 1485 (W)X 860 (H)X 255 (D) mm
5 Product Only SET 23 Kg
Weight With BOX 28.5 Kg
6 Stand Assy SWIVEL ()20 degree Fixed Stand
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ADJUSTMENT INSTRUCTION
1. Application RangeThis specification sheet is applied to all of the LCD TV with
LA92G chassis.
2. Specification1) 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 5C of temperature and 6510% of relative humidity if
there is no specific designation.
4) The input voltage of the receiver must keep 100~240V,
50/60Hz.
5) The receiver must be operated for about 5 minutes prior to
the adjustment when module is in the circumstance of over
15.* In case of keeping module is in the circumstance of 0C, it
should be placed in the circumstance of above 15C for 2
hours.
In case of keeping module is in the circumstance of below -
20C, it should be placed in the circumstance of above
15C for 3 hours,.
*Caution
When still image is displayed for a period of 20 minutes or
longer (especially where W/B scale is strong. Digital pattern
13ch and/or Cross hatch pattern 09ch), there can some
afterimage in the black level area.
3. Adjustment items3.1 Board-level adjustment
Adjust 480i Component1 adjustment
Adjust 1080p Component1 adjustment
Adjust 1024*768 RGB adjustment
Above adjustment items can be also performed in Final
Assembly if needed.
Both Board-level and Final assembly adjustment items can
be check using In-Start Menu 1. Adjust Check.
3.2 Final assembly adjustment
EDID/DDC download
White Balance adjustment
RS-232C functionality check
Factory Option setting per destinationShip-out mode setting (In-Stop)
3.3 Etc.
Ship-out mode
Service Option Default
USB Download(S/W Update, Option)
4. Board-level adjustment4.1 ADC adjustment
4.1.1 Overview
ADC adjustment is needed to find the optimum black level andgain in Analog-to-Digital device and to compensate RGB
deviation.
4.1.2 Equipment & Condition
1) Jig (RS-232C protocol)
2) Internal pattern is used. No external signal is needed.
4.1.3 Adjustment
4.1.3.1 Method
Using RS-232, adjust items listed in 3.1 in the order shown
in 4.1.3.3.
4.1.3.2 Adjustment protocol
4.1.3.3 Adjustment order
ad 00 00 [Enter ADC adjustment mode]
kb 00 04 [Component1 Input Change]
ad 00 10 [Adjust 480i Component1]
ad 00 10 [Adjust 1080p Component1]
kb 00 06 [RGB Input Change]
ad 00 10 [Adjust 1024*768 RGB]
ad 00 90 [End adjustment mode]
Protocol Command Set ack
Source Input kb 00 04 b 00 OK04x (Adjust 480i/1080p Comp1 )
Change kb 00 06 b 00 OK06x (Adjust 1024*768 RGB)
Begin adj. ad 00 10
Return OKx (Success)
adj. result NGx (Fail)
Read (main) (main input )
adj. data ad0020 0000000000000000000000007c007b006dx
(sub ) (Sub input)
ad 00 21 000000070000000000000000007c00830077x
Confirm adj. ad 00 99 NG 03 00x (Fail)
NG 03 01x Fail)
NG 03 02x (Fail )
OK 03 03x (Success)
End adj. ad 00 90 d 00 OK90x
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5. Final Assembly adjustment
5.1 ADC(Saturn5) adjustment
5.1.1 Overview
ADC adjustment is needed to find the optimum black level and
gain in Analog-to-Digital device and to compensate RGB
deviation.
5.1.2 Equipment & Condition
1) IN-START. remote
2) 801GF(802B, 802F, 802R) or MSPG925FA Pattern
Generator
- Resolution:
480i Comp1 (MSPG-925FA: model-209, pattern-65)
1080p Comp1 (MSPG-925FA: model-225 , pattern-65)
1024*768 RGB (MSPG-925FA: model-60 , pattern-65)
- Pattern Name: Horizontal 100% Color Bar Pattern
- Pattern Level: 0.70.1 Vp-p
- Image
3) Use the certificated cable.
5.1.3 Method
5.1.3.1 ADC 480i Comp1
Set Component 480i mode and 100% Horizontal Color BarPattern(HozTV31Bar), then set TV set to Component1 mode
and its screen to NORMAL
After get the signal, wait more a second and enter the In
STARTwith press In-Start key of Service remocon. After then
select 6. External ADC-> Comp 480i with navigator button
and press Enter. It is automatically adjustment
You can see ADC Component Success message after
Adjustment success Error Messages: When its adjustment is
not correct, ADC Component Failmessage displayed.
If its signal dont out, then Check Signal Statusmessage
displayed. These messages will be displayed just a second.
5.1.3.2 ADC 1080p Comp1
Set Component 1080P mode and 100% Horizontal Color BarPattern(HozTV31 Bar), then set TV set to Component1 mode
and its screen to NORMAL
After get the signal, wait more a second and enter the In
STARTwith press In-Start key of Service remocon. After then
select 6. External ADC-> Comp 1080Pwith navigator button
and press Enter. It is automatically adjustment
You can see ADC Component Success message after
Adjustment success Error Messages: When its adjustment is
not correct, ADC Component Failmessage displayed.
If its signal dont out, then Check Signal Statusmessage
displayed. These messages will be displayed just a second.
5.1.3.3 ADC 1024*768 RGB-PC
Set RGB-PC 1024*768 mode and 100% Horizontal Color Bar
Pattern(HozTV31Bar), then set TV set to Component1 mode
and its screen to NORMAL
After get the signal, wait more a second and enter the IN
STARTwith press In-Start key of Service remocon. After thenselect 6. External ADC-> RGB with navigator button and
press Enter. It is automatically adjustment
You can see ADC Component Success message after
Adjustment success Error Messages: When its adjustment is
not correct, ADC Component Failmessage displayed.
If its signal dont out, then Check Signal Statusmessage
displayed. These messages will be displayed just a second.
5.2 White Balance adjustment
5.2.1 Overview
W/B adjustment : Objective & How-it-works
- Objective: to reduce each Panels W/B deviation
- How-it-works: when R/G/B gain in the OSD is at 192, it
means the panel is at its Full Dynamic Range. In order toprevent saturation of Full Dynamic range and data, one of
R/G/B is fixed at 192, and the other two is lowered to find
the desired value.
5.2.2 Equipment
1) Color Analyzer : CA-210 (NCG: CH 9 / WCG: CH12
/LED Module:CH14)
2) Adjustment Computer (During auto adj., RS-232C
protocol is needed)
3) Adjustment R/C
4)Video Signal Generator MSPG-925F 720p/216Gray
(Model:217, Pattern:78)
-> Only when internal pattern is not available
Color Analyzer Matrix should be calibrated using CS-1000
5.2.3 Equipment connection map
5.2.4 Adjustment Command (Protocol)
Protocol
- LEN: Number of Data Byte to be send
- CMD: Command
- VAL: FOS Data
- CS: Checksum of sent Data
- A: Acknowledge
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX]
- 16 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.Only for training and service purposes
C 2009
Color Analyzer
ComputerRS-232C
# Pattern Generator
* If TV internal pattern is used,not needed
Signal Source
Probe RS-232C
RS-232C
START 6E A 50 A LEN A 03 A CMD A 00 A VAL A CS A STOP
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RS-232C Command used during auto-adjustment
Ex) wb 00 00 -> Begin white balance auto-adj.
wb 00 10 -> Gain adj.
ja 00 ff -> Adj. data
jb 00 c0
...
...
wb 00 1f -> Gain adj. complete
*(wb 00 20(Start), wb 00 2f(End)) -> Off-set adj.
wb 00 ff -> End white balance auto-adj.
5.2.5 Adjustment method
5.2.5.1 Auto adjustment method
1) Set TV in adj. mode using POWER On Key2) Zero calibrate probe then place it on the center of the
Display
3) Connect Cable(RS-232C)
4) Select mode in adj. Program and begin adj.
5) When adj. is complete (OK Sign), check adj. status per
mode (Warm, Medium, Cool)
6) Remove probe and RS-232C cable to complete adj.
adj. must begin w/ command Wb 00 00, and end w/wb
00 ffand adjustment offset if needed.
5.2.5.2 Manual adj. method
1) Set TV in adj. mode using POWER On Key
2) Press ADJ key EZ adjust using adj. R/C
3) Using CH + / - KEY, select 7.TEST PATTERN then pressEnter to place inHEAT RUN mode and wait for 5
minutes.
4) Zero calibrate the probe of Color Analyzer, then place it
on the center of LCD module within 10 cm of the surface.
5) Press ADJ key 6. White-Balance then press the cursor
to the right (KEY )
(When is pressed Full White internal pattern will be
displayed)
6) One of R Gain / G Gain / B Gain should be fixed at 192,
and the rest will be lowered to meet the desired value.
7) Adjustment is performed in COOL, MEDIUM, WARM 3
modes of color temperature
If internal pattern is not available, use RF input(Full white216 gray) In EZ Adjustment menu 6.White Balance, you
can select one of 2 options: Test pattern ON, Test pattern
OFF. Default is ONBy selecting OFF, you can adjust
using RF signal.
Adjustment condition and cautionary items
1) Lighting condition in surrounding area Surrounding
lighting should be lower than 10 lux.
Try to isolate adj. area into dark surrounding.
2) Probe location
- Color Analyzer (CA-210) probe should be within 10cm
and perpendicular of the module surface (80~ 100)
- B/L on should be checked using no signal or Full white
Pattern
5.2.6 Reference
(White Balance adj. coordinate and color temperature)
Luminance: Full white 216 Gray
Standard color coordinate and temperature using CS-1000
37/42/47LH40-UA (N-America)
Standard color coordinate and temperature using CA-210(CH 09)
5.3 Manual V-Com adjustment Method
* V-Com needs to be adjusted.(Default value is 450)
1) Set TV in adj. mode using POWER On Key
2) Press ADJ key -> EZ adjust using adj. R/C
3) Using CH + / - KEY, select 10.V-Com
4) Store the optimized default value 440if there is not flicker
on the picture.
5) But is there flicker on the picture, Adjust V-Com using VOL
+ / - KEY
6) Stop adjusting V-Com if green pattern doesnt show flicker.
and then stored current value and exit.
5.4 Option selection per country
5.4.1 Overview
Option selection is only done for models in Non-USA North
America due to rating
Applied model: LA 92G Chassis appli ed None USAModel(Canada, Mexico)
5.4.2 Method
1) Press ADJ key on the Adjustment R/C, then select Country
Group Menu
2) Depending on destination, select KR or US, then on the
lower option, select US, CA, MX. Selection is done using
+, - KEY
CoordinateMode
x y
Temp uv
Cool 0.276 0.283 11000K 0.0000
Medium 0.285 0.293 9300K 0.0000
Warm 0.313 0.329 6500K 0.0000
CoordinateMode
x yTemp uv
Cool 0.2760.002 0.2830.002 11000K 0.0000
Medium 0.2850.002 0.2930.002 9300K 0.0000
Warm 0.3130.002 0.3290.002 6500K 0.0000
EZ ADJUST
0. Tool Option11. Tool Option22. Tool Option33. Tool Option44. Country Group5. ADC Calibration6. White Balance7. Test pattern8. EDID D/L9. Sub B/C10. V-Com11. P-Gamma
V-Com
V-COM 445
Store
V-Com
V-COM 443
Store
CMD ID DATA Explanation
wb 00 00 Begin White Balance adj.
wb 00 ff End White Balance adj.
(internal pattern disappears)
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5.5 EYE-Q function check
Step 1) Turn on TV
Step 2) Press EYE key of Adj. R/C
Step 3) Cover the Eye Q II 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 (R: G: B: ).If after 6 seconds, R/G/B value is not lower than 10,
replace Eye Q II sensor
Step 5) Remove your hand from the Eye Q II sensor and wait
for 6 seconds
Step 6) Confirm that B. Light(xxx)value increases from 0.
If change is not seen, replace Eye Q II sensor
< step 2> < step 3> < step 4>
< step 5> < step 6>5.7 Ship-out (Default) mode check (Instop)
After final inspection, press In-Stop key of the Adjustment R/C
and check that the unit goes to Stand-by mode.
After final inspection, Mechanical S/W(AC S/W) to the on
position.
6. GND and Internal Pressure check6.1 Method
1) GND & Internal Pressure auto-check preparation
- Check that Power Cord is fully inserted to the set
(If loose, re-insert)
2) Perform GND & Internal Pressure auto-check
- Unit w/ fully inserted power cord and A/V arrives to the auto-check process.
- Connect D-terminal AV JACK TESTER
- Auto CONTROLLER(GWS103-4) ON
- Perform GND TEST
- If NG, Buzzer will sound to inform the operator
- If OK, changeover to I/P check automatically
(Remove CORD,A/V from AV Jack Box)
- Perform I/P test
- If NG, Buzzer will sound to inform the operator
- If OK, Good lamp will lit up and the stopper will allow the
pallet to move on to next process.
6.2 Checkpoint
TEST voltage
- GND: 1.5KV/min at 100mA
- Signal: 3KV/min at 100mA
Test time: 1 second
Test point
- GND test = Power cord GND & signal cable metal GND- Internal pressure TEST = POWER CORD GND & LIVE &
NEUTRAL
LEAKAGE CURRENT: At 0.5mArms
7. USB S/W Download (option)7.1 Overview
USB download allows fast SW upgrade in SVC areas or
during Board-level production
7.2 Download Method
1) After set on, confirm that image is displayed
2) Insert USB memory stick that contains the SW and after
few seconds similar image to the picture below will appear
3) In [Current TV Software Version Information] confirm
current version, and in [New Found TV Software Version
Information] confirm to-be version then press Enter by
selecting Start4) Progress bar will appear as below and after completion,
the set will reset (if the process does not advance to the
picture below, reset the unit and repeat the steps)
5) After download is complete, remove USB memory stick
6) By pressing In-Start on the adj. R/C, check the version
- 18 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.Only for training and service purposes
C 2009
TV Software Upgrade
INFORMATION
MODEL
Current ver.
Update ver.
LU-FHD 128
Ver. 3.00
Ver. 3.01
47LH40-UA-v0301.epk
START CANCEL
Press arrow key to move to the Start and....
TV Software Upgrade
Do not unplug until restart automatically
UPGRADING....
25%
TV Software Upgrade
Do not unplug until restart automatically
UPGRADING....
COMPLETE
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1. Power-up boot check
TROUBLESHOOTING
Check standby Voltage
P700 8pin : +5V_STNO
Check Power connector
and AC S/W on?OK
Check Fuse
OK
Replace Power board
OK
Check X100 clock
12MHz NOReplace X100
OK
Check P700 PWR_ON
2Pin : 5V NORe-download software
OK
Replace Mstar(IC100)
or Main board
OK
Check Q706 Output Level
5V NOReplace Q706
OK
Check Multi Voltage
P700 13pin : 12V, 18pin : 20V
NOReplace Power board
OK
Check inverter control & error
P700 22pin : Low
P700 20pin : highNO
Check Power board
or Module
OK
Check IC704 output voltage
3.3V NOReplace IC704
OK
Check Mstar LVDS output
R1109, R1110, R1111, R1120 NO
Replace Mstar(IC100)
or Main board
OK
Check URSA2 mini-LVDS output
P1400, P1401 NO
Replace Mstar(IC700)
or Main board
OK
Check
P1400, P1401 NO
Replace Mstar(IC700)
or Main board
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C 2009
2. Digital TV Video
Check RF Cable & Signal
OK
Check Tuner 5V Power
TU1001 4Pin NO Check IC1002
OK
Check IF_P/N SignalNO
Replace Tuner.
OK
Check Check Demodulator Input
Clock(X1005-25MHz) NOReplace X1005
OK
Check IC1004(LGDT) Output
- AR1070, AR1071 NOReplace IC1004
OK
Check Mstar LVDS output
R1109, R1110, R1111, R1120 NO
Replace Mstar(IC100)
or Main board
3. Analog TV Video
Check RF Cable
OK
Check Tuner 5V Power
TU1001 4PinCheck IC1002
OK
Check CVBS signal.
TU1001 #19 PinReplace Tuner.
OK
Check Mstar LVDS outputReplace Mstar(IC100)
or Main boardNO
NO
NO
4. Component Video
Check input signal format.
Is it supported?
OK
Check Component Cable.
OK
Check JK1206NO
Replace Jack.
OK
Check Mstar LVDS outputNO
Replace Mstar(IC100)
or Main board
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5. RGB Video
Check input signal format.
Is it supported?
OKCheck RGB Cable connectors for
damage.
OK
Check JK1201NO
Replace Jack.
OK
Check EDIDNO
Re-download EDID data.
OK
Check signal R/G/B/H/V-SyncR1234/1235/1236/1233/1232 NO
Check other set.If no problem, check signal
line
OK
Check Mstar LVDS outputNO
Replace Mstar(IC100)
or Main board
6. AV Video
Check input signal format.
Is it supported?
OK
Check AV Cable for damage or
open connector.
OK
Check JK1206,JK1202NO
Replace Jack.
OK
Check Mstar LVDS output
NO
Replace Mstar(IC100)
or Main board
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7. HDMI Video
Check input signal format.
Is it supported?
OK
Check HDMI Cable for damage or
open connector.
OK
Check JK500,501,502,503NO
Replace Jack.
OK
Check EDIDNO
Re-download
EDID data.
OKCheck HDCP key NVRAM(IC105)
power & I2C Signal (pin 5, 6) NOReplace the defective IC.
OK
Check HDMI SignalNO
Check other set.
If no problem, check signal
line.NO
Replace Main board
OK
Check Mstar LVDS outputNO
Replace Mstar(IC100)
or Main board
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C 2009
8. All Source Audio
Make sure you
can t hear any audio.
OK
First check the TV SPEAKER Menu
(Menu > Sound > TV Speaker) NOToggle the menu
OK
CheckMstarAUDIO_MASTER_CLK
R603 NO
Replace Mstar(IC100)or Main board
OK
Check Mstar I2S Output
R604, R605, R606 NO
Check signal line
Or replace IC100
OK
Check IC600 Power
*20V, 3.3V, 1.8V. NO
Check Regulaor
IC601.IC704
OK
Check Output Signal
P600 1,2,3,4 PIN NO
Replace NTP(Audio AMP)
IC600
OK
Check Connector & P600NO
Replace connector
if found to be damaged.
OK
Check speaker resistance
and connector damage. NOReplace speaker.
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C 2009
9. Digital TV Audio
Check Tuner 5V Power
TU1001 4PinNO
CheckIC100219/22inch model check
IC1005
OK
Check IF_P/N SignalNO
Replace Tuner.
OK
Check Check Demodulator Input
Clock(X1005-25MHz) NOReplace X1005
OK
Check IC1004(LGDT3305) Output
- AR1070, AR1071 NOReplace IC1004
OK
Check Output Signal
P600 1,2,3,4 PIN NO
Replace NTP3100L
(Audio AMP) IC600
OK
Check Connector & P600NO
Replace connector
if found to be damaged.
OK
Check speaker resistance
and connector damage. NOReplace speaker.
10. Analog TV Audio
Check Tuner 5V Power
TU1001 4Pin NO
Check IC1002
Check IC1005(19",22") NO
Bad Tuner. Replace
Tuner.
OK
Check SIF buffer signal.NO
Check SIF Signal line.
OK
Follow procedure All source audio
trouble shooting guide. NO
Replace Mstar(IC100)
or Main board
Check RF Cable
OK
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- 25 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.Only for training and service purposes
C 2009
11. No Video(for 42/47LH40-UA)
Check 12V DC Voltage
- L1300 NO
Check Q706
- pin4 2V DC voltage NO
Check PANEL_CTRL
- LOW(0V)
OK OKOKReplace Q706 Check Q704/Q705
Check 3.3V/16V/26V DC Voltage
-R1447,R1446,R1450 NO
Replace IC1300
or Main borad
OK
Check IC1301 pin 28(Vcom)
- about 7V NO
Detach the P1400/P1401
FFC Cable
- Check VcomNO
Replace IC1301
OKOK
Replace LCD Module
Check URSA2 mini-LVDS output
P1400, P1401 NOReplace LCD Module
12. No Video(for 37LH40-UA)
Check 12V DC Voltage
- L1300 NO
Check Q706
- pin4 2V DC voltage NO
Check PANEL_CTRL
- LOW(0V)
OK OKOK
Replace Q706 Check Q704/Q705
Check 3.3V/16V/26V DC Voltage
-R1327,R1371,R1378 NO
Replace IC1300
or Main borad
OK
Check IC1301 pin 28(Vcom)
- about 7V NO
Check IC1302
input / output NOReplace IC1302
OKDetach the P1400/P1401
FFC Cable
- Check VcomOK
OK
Check URSA2 mini-LVDS output
P1400, P1401 NOReplace LCD Module
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LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.Only for training and service purposes
C 2009 - 26 -
BLOCK DIAGRAM
D-subRGB
HDMI1
SideAV
CVBS,L/R
DDR2(512Mbit)
Qimonda/Hynix
NA
NDFlash
(256Mb)
DigitalAudio(Optic)
DigitalA
MP
NTP300
0A
RS-232C(Ctrl./SVC)
I2S
EEPROM
512Kb
RGB/H/V
Half-NIM Tuner
DDR_Data[0:15],DQS,DM
Addr.[],ctrl.data
MAX3232
Sa
turn5
Sa
turn5
(A
TSC
(A
TSC
US)
US)
M
PEG2
Linux
S
caler
Headphone
Data[0
7]
IF+/-
SIF
TU_CVBS
Reset/IF_AGC
SDA/SCL_5V
JTAG
CLK,TDI,TDO,MS,RST
HDMI3
Addr[01],C
S
AudioL/R
AudioL/R(forRGB)
HDMI2
SPDIF
RX/TX
RX/TX
JACKPACK
J
ACKPACK
atREAR
atREAR
J
ACKPACK
JACKPACK
atSIDE
atSIDE
SCL,SDA_3.3V
TRBuffer
VSB
Demod.
X-tal
ResetSw
itch
ResetIC
12MHz
TSIn[0
7]
TS_clk,SOP,Val
EEPROM
Data[16:31]
DDR2(512Mbit)
AV
Component1
YPbPr,L/R
CVBS,Y/C,L/R
Component2
YPbPr,L/R
DigitalAudio(Coaxial)
USB2.0
SCL,SDA_3.3V
Bluetooth
Dongle
(Option)
DP/DM
DP/DM
O.C.Protector
+5V
+5V
LCDM
odule
(FHD,1
20Hz)
FR
CIC
(MS
T7327)
D
DR2
Qimo
nda/Hynix
FRC
Block
FRC
Block
TT--co
nblock
co
nblock
LVDS
LCDModule
(FHD,60Hz)
Option
HDMI3
HDMIS/W
Mini-LVDS
P-Gamma
V-Com
IIC
Qimonda/Hynix
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LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.Only for training and service purposes
C 2009 - 27 -
+5V_GENERAL
MST7323
(URSA1)
LGDT3305
SDA_0
SCL_0
SDA_1
SCL_1
FE_DEMOD_SDA
FE_DEMOD_SCL
FE_TUNER_SDA
FE_TUNER_SCL
(SDA_3
SCL_3)
EEPROM_SDA
EEPROM_SCL
(SDA_2
SCL_2)
Mstar
22ohm
0ohm
4.7Kohm
MEMC_SDA
MEMC_SCL
0ohm
22ohm
+3.3V
NTP3100L
TDA9996
TDA9996_SDA
TDA9996_SCL
0ohm
0ohm
4.7Kohm
SDA_SUB/AMP
SCL_SUB/AMP
0ohm
100ohm
+3.3V_HDM
I_ST
OPT
TDV-H101F
22ohm
22ohm
4.7Kohm
+5V_TU
+5V_General
4.7Kohm
AT24C512
33ohm
22ohm
4.7Kohm
+3.3V
+5V_General
OPT
33ohm
3.3Koh
m
+3.3V
33ohm
33ohm
33ohm
33ohm
33ohm
33ohm
+3.3V_ST
3.3Kohm
IR
0ohm
MST7327
(URSA2)
IIC Map
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- 28 - LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.Only for training and service purposes
C 2009
MST7327N
TPS65162
FFCCable
RIGHT
FRC_LVDS
OUTPUT
+3.3V_FRC
+1.26V_FRC
+1.8V_FRC
12Mhz
FRC_SDA
FRC_SCL
SDA0
SCL0
FRC_ODT
EEPRO
M
FRC_RESET
FRC_MCLK
FRC_MCLKZ
WP_EEPROM_FRC
OPT_P
OPT_N
GOE
GSC
GSP_R
GSP
SOE
POL
H_CONV
LED_LCM_FRC
VLCD_LCM(1
2V)
VDD_LCM(16V)
VGL(-5V)
VGH
VGHM
DPM
FLK
VCOMROUT
P_VCOM
VCOM_FB
VLCD_LCM_
O
UT(12V)
VCC_LCM(3.3V)
VCOMLOUT
P_VCOM
P_Gamma
FFCCable
LEFT
VDD_LCM_PG
VGH_M
(+24V)
VCOMR_OP
VCOML_OP
DPM
SOE_L
SOE_R
LTD_R/L
LED
GMA1~18
MiniLVDSOUT
URSA
2
T-Con block (non GIP)
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LGE Internal Use OnlyCopyright LG Electronics. Inc. All right reserved.Only for training and service purposes
C 2009 - 29 -
300
200
400
9
10
806
804
520
540
530
805
122
310
120
510
121
803
802
801
900
500
510
A2
LV1
A10
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
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THE
SYMBOLMARKOFTHISSCHEMETICDIAGRAMINCORPORATES
SPECIALFEATURESIMPORTANTFORPROTECTIONFROMX-RADIATIO
N.
FILREANDELECTRICALSHOCKHAZARDS,WHENSERVICINGIFIS
ESSENTIALTHATONLYMANUFATURESSPECFIEDPARTSBEUSEDFO
R
THECRITICALCOMPONENTSINTHE
SYMBOLMARKOFTHESCHEMETIC.
1000pF
50V
C629
10K
R611
SPK_
L+
006:AH11
0.01uF
50V
C643
SPK_
R-
006:AJ16
SPK_
R-006:AH9
3.3
R625
0.1uF
50V
C627
0.47uF
50V
C633
WAFER-ANGLE
P600
1234
100
R607
120-ohm
L608
0.01uF
50V
C641
0.1uF
50V
C635
33pF
50V
OPTC616
0.01uF
50V
C644
MS_L
RCK
001:W26
1uF
10V
C617
+24V_
AMP
AMP_
RST
001:AB21
1N4148W
100V
OPT
D602
+3.3V_
ST
DA-8580
EAP38319001
L607
2S
1S
1F
2F
SDA_
SUB/AMP
001:AI5;004:K27
5.6
R615
0.01uF
50V
C639
+1.8V_
AMP
0OPT
R627
MLB-201209-0120P-N2
L603
SPK_
R+
006:AJ18
+3.3V
SCL_
SUB
/AMP
001:AI5;004:K27
22000pF
50V
C614
1uF
16V
C619
3.3
R622
1000pF
50V
C630
+24V_
AMP
1N4148W
100V
OPT
D603
MLB-201209-0120P-N2L605
0.1uF
C608
3.3
R623
SPK_
R+006:AH10
1uF
16V
C622
1N4148W
100V
OPT
D604
33KOPT
R609
SPK_
L+
006:AJ22
SPK_
L-
006:AJ20
120-ohm
L609
+1.8V_
AMP
MS
_SCK
001:W26
MLB-201209-0120P-N2
L602
SPK_
L-006:AH10
10K
R612
+1.8V_
AMP
3.3
R624
1000pF
50V
C607
120-ohm
L610
3.3
R626
1000pF
50V
C606
22000pF
50V
C623
4.7K
R619
5.6
R616
0.1uF
50V
C645
0.1uF
50V
C620
0.01uF
50V
C642
1uF
10V
C611
0R610
22000pF
50V
C624
AMP_M
UTE
001:D16
0.01uF
50V
C640
5.6
R613
0.1uF
50V
C636
MS_L
RCH
001:W26
DA-8580
EAP38319001
L606
2S
1S
1F
2F
MLB-201209-0120P-N2
L604
0.47uF
50V
C634
33pF
50V
C612
100
R601
2SC3052
Q600
E
B
C
0
R6
00
POWER_D
ET
1N4148W
100V
OPT
D601
100pF
50V
C604
1000pF
50V
C631
0.01uF
50V
C615
+24V_
AMP
1000pF
50V
C632
120-ohm
L611
3.3
R621
5.6
R614
33pF
50V
C609
22000pF
50V
C618
4.7K
R620
100
R606
100
R608
0.1uF
50V
C638
+24V
0R603
100
R604
4.7K
R617
4.7K
R618
100
R605
10uF
10V
C610
0.1uF
50V
C637
AUDIO_
MASTER_CLK
001:W26
3.3K
R602
0.01uF
50V
C626
0.1uF
16V
C601
0.1uF
16V
C605
0.1uF
16V
C613
0.1uF
50V
C625
68uF
35V
C602
68uF
35V
C628
AZ1117H-1.8TRE1(EH13A)
IC601
2
OUTPUT
3
INPUT
1
ADJ/GND
0.1uF
16V
C648
22uF
16V
C649
TP600
+1.8V_
AMP
22uF
16V
C646
TP601
+3.3V
0.1uF
16V
C647
GND
10uF
16V
C600
10uF
16V
C603
NTP-3100L
EAN60664001
IC600
1
BST1A
2
VDR1A
3
RESET
4
AD
5
DVSS_
1
6
VSS_
IO
7
CLK_
I
8
VDD_
IO
9
DGND_
PLL
10
AGND_
PLL
11
LFM
12
AVDD_
PLL
13
DVDD_
PLL
14
TEST0
15 DVSS_2
16 DVDD
17 SDATA
18 WCK
19 BCK
20 SDA
21 SCL
22 MONITOR_0
23 MONITOR_1
24 MONITOR_2
25 FAULT
26 VDR2B
27 BST2B
28 PGND2B_1
29P
GND2B_
2
30O
UT2B_
1
31O
UT2B_
2
32P
VDD2B_
1
33P
VDD2B_
2
34P
VDD2A_
1
35P
VDD2A_
2
36O
UT2A_
1
37O
UT2A_
2
38P
GND2A_
1
39P
GND2A_
2
40B
ST2A
41V
DR2A
42N
C
43VDR1B
44BST1B
45PGND1B_1
46PGND1B_2
47OUT1B_1
48OUT1B_2
49PVDD1B_1
50PVDD1B_251PVDD1A_152PVDD1A_253OUT1A_154OUT1A_255PGND1A_156PGND1A_2
SPEAKER_
R
SPEAKER_L
Monitor0_
1_
2TPisnecessory
MCLKS
DATAWCKBCKTPisnecessory
MstarApplication
Copyright LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use OnlyC 2009
Audio Amp.
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THE
SYMBOLMARKOFTHISSCHEMETICDIAGRAMINCORPORATES
SPECIALFEATURESIMPORTANTFORPROTECTIONFROMX-RADIATION.
FILREANDELECTRICALSHOCKHAZARDS,WHENSERVICINGIFIS
ESSENTIALTHATONLYMANUFATURESSPECFIEDPARTSBEUSEDFOR
THECRITICALCOMPONENTSINTHE
SYMBOLMARKOFTHESCHEMETIC
.
BG2012B080TF
L1202
CDS3C05
HDMI1
5.6V
ZENER
D1203
10K
R1223
OPT
0
R1220
5.6B
D1240
ZENER
1000pF
50V
OPT
C1248
+5V_
EXT
ADMC5M03200L_
AMODIODE
5.6V
D1233
OPT
SDA_
SUB/AMP
001:AI5;006:D12
100
R1200
LED_
MOVING/LED_
R
001:AR32
USB_D
M
001:AR34
5.6B
D1239
ZENER
ADMC5M03200L_
AMODIODE5.6V
D1201
ZENER
5.6B
D1238
ZENER
+5V_
ST
BG2012B080TF
L1204
CB3216PA501EL1219
4.7K
R1227
10K
R1224
OPT
0R1239
Except_LU30
10K
R1216U
SB_
DP
001:AR34
100pF
50V
C1207
+5V_
USB_
1
001:I2
+3.3V_
ST
+3.3V_
ST
120K
OP
T
R1213
4.7K
R1219
OPT
+3.3V
47R1
217
SCL_
SUB/AMP
001:AI5;006:D11
1000pF
50V
OPT
C1249
0
R1229
0
R1225
OPT
100
R1201
USBDOWNSTREAM
KJA-UB-4-0004JK1204
1 2 3 45
180
R1218
0LU30
R1214
+5V_
USB_
1
001:I2
100uF
16V
C1209
BG2012B080TF
L1203
CB3216PA501E
L1201
0.1uF
16V
C1208
0.1uF
16V
C1200
1000p
F
50V
C1205
CB3216PA501E
L1200
0.1uF
16V
C1202
IR
001:AB22;004:AD
4
100
R1231
OPT
10K
R1228
USB_
OCD
LED_
MOVING/LED_R
001:AR32
1000pF
50V
C1201
0.1uF
C1203
ADMC5M03200L_AMODIODE
5.6V
D1202
ZENER
KEY10
01:AB23
0
R1230
+3.3V_
ST
LED_
B
12507WS-12L
P1200
1
SCL
2
SDA
3
GND
4
KEY1
5
KEY2
6
5V_
ST
7
GND
8
WARM_
ST
9
IR
10
GND
11
3.3V_
ST
12
PWR_
ON
13
GND
KEY20
01:AB23
4.7KR1203
MIC2009YM
6-TR
IC120
2
3
ENABLE
2
GND
4
FAULT/
1
VIN
6
VOUT
5
ILIMIT
0.1uF
C1244
ENKMC2838-T112
D1204 A
1
C
A2
LED_
B 001:AR32
0.1uF
OPT
C1253
+3.3V_
ST
0
R1222
0.1uF
C1204
4.7KR1202
USB_
CTL
10uF
10V
C1245
0
R1221
2SC3052
Q1201
E
B
C
AD
MC5M03200L_
AMODIODE
5.6
V
D1
232
OP
T
USBJACK
USB+5VOver
CurrentProtection-->
USBJack
[CONTROLIR&LED]
FortestingLU30&
Smallmodel
PintoPinReplacablewithT
-MIC2019YM6
USB
Copyright LG Electronics. Inc. All right reserved.Only for training and service purposes
LGE Internal Use OnlyC 2009
ETC SUB BOARD I/F
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Jan., 2009Printed in KoreaP/NO : MFL58436004