P/NO : MFL68660904 (1605-REV02)
CHASSIS : LA51H
MODEL : 65LF6300/6350/6390
MODEL : 65LF6300/6350/6390-UA
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
LED TV
SERVICE MANUAL
Internal Use Only
- 2 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
CONTENTS
CONTENTS .............................................................................................. 2
PRODUCT SAFETY ................................................................................. 3
SPECIFICATION ....................................................................................... 6
ADJUSTMENT INSTRUCTION .............................................................. 13
EXPLODED VIEW .................................................................................. 22
TROUBLE SHOOTING
.............................................................APPENDIX
- 3 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the
Schematic Diagram and Exploded View.
It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent
Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
General Guidance
An isolation Transformer should always be used during the
servicing of a receiver whose chassis is not isolated from the AC
power line. Use a transformer of adequate power rating as this
protects the technician from accidents resulting in personal injury
from electrical shocks.
It will also protect the receiver and it's components from being
damaged by accidental shorts of the circuitry that may be
inadvertently introduced during the service operation.
If any fuse (or Fusible Resistor) in this TV receiver is blown,
replace it with the specified.
When replacing a high wattage resistor (Oxide Metal Film Resistor,
over 1 W), keep the resistor 10 mm away from PCB.
Keep wires away from high voltage or high temperature parts.
Before returning the receiver to the customer,
always perform an AC leakage current check on the exposed
metallic parts of the cabinet, such as antennas, terminals, etc., to
be sure the set is safe to operate without damage of electrical
shock.
Leakage Current Cold Check(Antenna Cold Check)
With the instrument AC plug removed from AC source, connect an
electrical jumper across the two AC plug prongs. Place the AC
switch in the on position, connect one lead of ohm-meter to the AC
plug prongs tied together and touch other ohm-meter lead in turn to
each exposed metallic parts such as antenna terminals, phone
jacks, etc.
If the exposed metallic part has a return path to the chassis, the
measured resistance should be between 1 MΩ and 5.2 MΩ.
When the exposed metal has no return path to the chassis the
reading must be infinite.
An other abnormality exists that must be corrected before the
receiver is returned to the customer.
Leakage Current Hot Check (See below Figure)
Plug the AC cord directly into the AC outlet.
Do not use a line Isolation Transformer during this check.
Connect 1.5 K / 10 watt resistor in parallel with a 0.15 uF capacitor
between a known good earth ground (Water Pipe, Conduit, etc.)
and the exposed metallic parts.
Measure the AC voltage across the resistor using AC voltmeter
with 1000 ohms/volt or more sensitivity.
Reverse plug the AC cord into the AC outlet and repeat AC voltage
measurements for each exposed metallic part. Any voltage
measured must not exceed 0.75 volt RMS which is corresponds to
0.5 mA.
In case any measurement is out of the limits specified, there is
possibility of shock hazard and the set must be checked and
repaired before it is returned to the customer.
Leakage Current Hot Check circuit
IMPORTANT SAFETY NOTICE
SAFETY PRECAUTIONS
- 4 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
SERVICING PRECAUTIONS
CAUTION: Before servicing receivers covered by this service
manual and its supplements and addenda, read and follow the
SAFETY PRECAUTIONS on page 3 of this publication.
NOTE: If unforeseen circumstances create conict between the
following servicing precautions and any of the safety precautions
on page 3 of this publication, always follow the safety precautions.
Remember: Safety First.
General Servicing Precautions
1. Always unplug the receiver AC power cord from the AC power
source before;
a. Removing or reinstalling any component, circuit board mod-
ule or any other receiver assembly.
b. Disconnecting or reconnecting any receiver electrical plug or
other electrical connection.
c. Connecting a test substitute in parallel with an electrolytic
capacitor in the receiver.
CAUTION: A wrong part substitution or incorrect polarity
installation of electrolytic capacitors may result in an explo-
sion hazard.
2. Test high voltage only by measuring it with an appropriate
high voltage meter or other voltage measuring device (DVM,
FETVOM, etc) equipped with a suitable high voltage probe.
Do not test high voltage by "drawing an arc".
3. Do not spray chemicals on or near this receiver or any of its
assemblies.
4. Unless specied otherwise in this service manual, clean
electrical contacts only by applying the following mixture to the
contacts with a pipe cleaner, cotton-tipped stick or comparable
non-abrasive applicator; 10 % (by volume) Acetone and 90 %
(by volume) isopropyl alcohol (90 % - 99 % strength)
CAUTION: This is a ammable mixture.
Unless specied otherwise in this service manual, lubrication of
contacts in not required.
5. Do not defeat any plug/socket B+ voltage interlocks with which
receivers covered by this service manual might be equipped.
6. Do not apply AC power to this instrument and/or any of its
electrical assemblies unless all solid-state device heat sinks are
correctly installed.
7. Always connect the test receiver ground lead to the receiver
chassis ground before connecting the test receiver positive
lead.
Always remove the test receiver ground lead last.
8. Use with this receiver only the test xtures specied in this
service manual.
CAUTION: Do not connect the test xture ground strap to any
heat sink in this receiver.
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid-state) devices can be damaged eas-
ily by static electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices. Examples of typical ES
devices are integrated circuits and some eld-effect transistors
and semiconductor “chip” components. The following techniques
should be used to help reduce the incidence of component dam-
age caused by static by static electricity.
1. Immediately before handling any semiconductor component or
semiconductor-equipped assembly, drain off any electrostatic
charge on your body by touching a known earth ground. Alter-
natively, obtain and wear a commercially available discharging
wrist strap device, which should be removed to prevent poten-
tial shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES
devices, place the assembly on a conductive surface such as
aluminum foil, to prevent electrostatic charge buildup or expo-
sure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES
devices.
4. Use only an anti-static type solder removal device. Some solder
removal devices not classied as “anti-static” can generate
electrical charges sufcient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate
electrical charges sufcient to damage ES devices.
6. Do not remove a replacement ES device from its protective
package until immediately before you are ready to install it.
(Most replacement ES devices are packaged with leads electri-
cally shorted together by conductive foam, aluminum foil or
comparable conductive material).
7. Immediately before removing the protective material from the
leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be
installed.
CAUTION: Be sure no power is applied to the chassis or circuit,
and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replace-
ment ES devices. (Otherwise harmless motion such as the
brushing together of your clothes fabric or the lifting of your
foot from a carpeted oor can generate static electricity suf-
cient to damage an ES device.)
General Soldering Guidelines
1. Use a grounded-tip, low-wattage soldering iron and appropriate
tip size and shape that will maintain tip temperature within the
range or 500 °F to 600 °F.
2. Use an appropriate gauge of RMA resin-core solder composed
of 60 parts tin/40 parts lead.
3. Keep the soldering iron tip clean and well tinned.
4. Thoroughly clean the surfaces to be soldered. Use a mall wire-
bristle (0.5 inch, or 1.25 cm) brush with a metal handle.
Do not use freon-propelled spray-on cleaners.
5. Use the following unsoldering technique
a. Allow the soldering iron tip to reach normal temperature.
(500 °F to 600 °F)
b. Heat the component lead until the solder melts.
c. Quickly draw the melted solder with an anti-static, suction-
type solder removal device or with solder braid.
CAUTION: Work quickly to avoid overheating the circuit
board printed foil.
6. Use the following soldering technique.
a. Allow the soldering iron tip to reach a normal temperature
(500 °F to 600 °F)
b. First, hold the soldering iron tip and solder the strand against
the component lead until the solder melts.
c. Quickly move the soldering iron tip to the junction of the
component lead and the printed circuit foil, and hold it there
only until the solder ows onto and around both the compo-
nent lead and the foil.
CAUTION: Work quickly to avoid overheating the circuit
board printed foil.
d. Closely inspect the solder area and remove any excess or
splashed solder with a small wire-bristle brush.
- 5 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
IC Remove/Replacement
Some chassis circuit boards have slotted holes (oblong) through
which the IC leads are inserted and then bent at against the cir-
cuit foil. When holes are the slotted type, the following technique
should be used to remove and replace the IC. When working with
boards using the familiar round hole, use the standard technique
as outlined in paragraphs 5 and 6 above.
Removal
1. Desolder and straighten each IC lead in one operation by
gently prying up on the lead with the soldering iron tip as the
solder melts.
2. Draw away the melted solder with an anti-static suction-type
solder removal device (or with solder braid) before removing
the IC.
Replacement
1. Carefully insert the replacement IC in the circuit board.
2. Carefully bend each IC lead against the circuit foil pad and
solder it.
3. Clean the soldered areas with a small wire-bristle brush.
(It is not necessary to reapply acrylic coating to the areas).
"Small-Signal" Discrete Transistor
Removal/Replacement
1. Remove the defective transistor by clipping its leads as close
as possible to the component body.
2. Bend into a "U" shape the end of each of three leads remaining
on the circuit board.
3. Bend into a "U" shape the replacement transistor leads.
4. Connect the replacement transistor leads to the corresponding
leads extending from the circuit board and crimp the "U" with
long nose pliers to insure metal to metal contact then solder
each connection.
Power Output, Transistor Device
Removal/Replacement
1. Heat and remove all solder from around the transistor leads.
2. Remove the heat sink mounting screw (if so equipped).
3. Carefully remove the transistor from the heat sink of the circuit
board.
4. Insert new transistor in the circuit board.
5. Solder each transistor lead, and clip off excess lead.
6. Replace heat sink.
Diode Removal/Replacement
1. Remove defective diode by clipping its leads as close as pos-
sible to diode body.
2. Bend the two remaining leads perpendicular y to the circuit
board.
3. Observing diode polarity, wrap each lead of the new diode
around the corresponding lead on the circuit board.
4. Securely crimp each connection and solder it.
5. Inspect (on the circuit board copper side) the solder joints of
the two "original" leads. If they are not shiny, reheat them and if
necessary, apply additional solder.
Fuse and Conventional Resistor
Removal/Replacement
1. Clip each fuse or resistor lead at top of the circuit board hollow
stake.
2. Securely crimp the leads of replacement component around
notch at stake top.
3. Solder the connections.
CAUTION: Maintain original spacing between the replaced
component and adjacent components and the circuit board to
prevent excessive component temperatures.
Circuit Board Foil Repair
Excessive heat applied to the copper foil of any printed circuit
board will weaken the adhesive that bonds the foil to the circuit
board causing the foil to separate from or "lift-off" the board. The
following guidelines and procedures should be followed whenever
this condition is encountered.
At IC Connections
To repair a defective copper pattern at IC connections use the
following procedure to install a jumper wire on the copper pattern
side of the circuit board. (Use this technique only on IC connec-
tions).
1. Carefully remove the damaged copper pattern with a sharp
knife. (Remove only as much copper as absolutely necessary).
2. carefully scratch away the solder resist and acrylic coating (if
used) from the end of the remaining copper pattern.
3. Bend a small "U" in one end of a small gauge jumper wire and
carefully crimp it around the IC pin. Solder the IC connection.
4. Route the jumper wire along the path of the out-away copper
pattern and let it overlap the previously scraped end of the
good copper pattern. Solder the overlapped area and clip off
any excess jumper wire.
At Other Connections
Use the following technique to repair the defective copper pattern
at connections other than IC Pins. This technique involves the
installation of a jumper wire on the component side of the circuit
board.
1. Remove the defective copper pattern with a sharp knife.
Remove at least 1/4 inch of copper, to ensure that a hazardous
condition will not exist if the jumper wire opens.
2. Trace along the copper pattern from both sides of the pattern
break and locate the nearest component that is directly con-
nected to the affected copper pattern.
3. Connect insulated 20-gauge jumper wire from the lead of the
nearest component on one side of the pattern break to the lead
of the nearest component on the other side.
Carefully crimp and solder the connections.
CAUTION: Be sure the insulated jumper wire is dressed so the
it does not touch components or sharp edges.
- 6 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement
.
1. Application range
This spec sheet is applied to the LED TV used LA51H chassis
2. Test condition
Each part is tested as below without special notice.
1) Temperature : 20 ºC ± 5 ºC
2) Relative Humidity: 65 % ± 10 %
3) Power Voltage
Standard input voltage (100~240V@ 50/60Hz)
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 20 minutes prior to
the adjustment.
3. Test method
1) Performance: LGE TV test method followed
2) Demanded other specification
- Safety : CE, IEC specification
- EMC: CE, IEC
- 7 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
4. General Specification
No Item Specication Result Module Name Remark
1. Receiving System ATSC / NTSC-M / 64 & 256 QAM
2. Available Channel 1) VHF : 02~13
2) UHF : 14~69
3) DTV : 02-69
4) CATV : 01~135
5) CADTV : 01~135
3. Input Voltage AC 100 ~ 240V 50/60Hz Mark : 110V, 60Hz
4. Market NORTH AMERICA
5. Screen Size 43”, 49", 55”, 65"
6. Aspect Ratio 16:9
7. Tuning System FS
8. Module LC430EUE-FHM1 FHD 43INCH
1920X1080 300CD COLOR 68% 16/9
1200:1 60Hz Inverter N LED 2D TBD
LG Display Co., Ltd.
LGD LC430EUE-FHM1
P/N: EAJ63109701
43LF6300-UA
LC490EUE-FHM1 FHD 49INCH
1920X1080 300CD COLOR 68%
16/9 1200:1 60Hz Inverter N LED 2D
With T-con, 51.1W/47W/4.1W, 8Bit,
10000K, 178/178, GTGBW 9ms, LVDS
2ch, Carbon Titan LG Display Co.,
Ltd.
LGD LC490EUE-FHM1
P/N: EAJ63110601
49LF6300-UA
LC550EUE-FHM1 FHD 55.0INCH
1920X1080 330CD COLOR 68%
16/9 1200:1 60Hz Inverter N LED 2D
With T-con, 62.0W/58.4W/3.6W, 8Bit,
10000K, 178/178, GTGBW 9ms, LVDS
2ch, Carbon Titan LG Display Co.,
Ltd.
LGD LC550EUE-FHM1
P/N: EAJ63110501
55LF6300-UA
LC650EUF-FHM1 FHD 65INCH
1920X1080 350CD COLOR 68%
16/9 1400:1 120Hz Inverter N LED
2D With T-con, 83.3W/80.1W/3.2W,
10Bit(Dithering), 10000K, 178/178,
GTGBW 9ms, LVDS 4ch, Carbon Titan
LG Display Co., Ltd.
LGD LC650EUF-FHM1
P/N: EAJ63110401
65LF6300-UA
9. Operating Environment 1) Temp : 0 ~ 40 deg
2) Humidity : ~ 80 %
10. Storage Environment 1) Temp : -20 ~ 60 deg
2) Humidity : ~ 85 %
- 8 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5. Supported video resolutions
5.1. Component 2D input(Y, CB/PB, CR/PR)
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed
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 31.50 60 27.027 SDTV 480P
4. 720*480 31.47 59.94 27.0 SDTV 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 67.50 60 148.50 HDTV 1080P
10. 1920*1080 67.432 59.94 148.352 HDTV 1080P
5.2. Component 3D input(Y, CB/PB, CR/PR)
No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock 3D input proposed mode Proposed
1. 1280*720 45.00 60.00 74.25 2D to 3D,Side by Side, Top and Bottom HDTV 720P
2. 1280*720 44.96 59.94 74.176 2D to 3D,Side by Side, Top and Bottom HDTV 720P
3. 1920*1080 33.75 60.00 74.25 2D to 3D,Side by Side, Top and Bottom HDTV 1080I
4. 1920*1080 33.72 59.94 74.176 2D to 3D,Side by Side, Top and Bottom HDTV 1080I
- 9 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5.3. HDMI Input (PC/DTV)
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed
PC
1 640*350 31.468 70.09 25.17 EGA X
2. 720*400 31.469 70.08 28.32 DOS O
3. 640*480 31.469 59.94 25.17 VESA(VGA) O
4 800*600 37.879 60.31 40.00 VESA(SVGA) O
5 1024*768 48.363 60.00 65.00 VESA(XGA) O
6 1152*864 54.348 60.053 80.002 VESA O
7 1360*768 47.712 60.015 85.50 VESA (WXGA) X
8 1280*1024 63.981 60.020 108.00 VESA (SXGA) O
9 1920*1080 67.5 60 148.5 HDTV 1080P O
DTV
1 640*480 31.469 59.94 25.175 SDTV 480P
2 640*480 31.5 60 25.200 SDTV 480P
3 720*480 31.50 60 27.027 SDTV 480P
4 720*480 31.469 59.94 27.00 SDTV 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 67.43 59.94 148.352 HDTV 1080P
11 1920*1080 27.000 24.000 74.25 HDTV 1080P
12 1920*1080 26.97 23.97 74.176 HDTV 1080P
13 1920*1080 33.75 30.000 74.25 HDTV 1080P
14 1920*1080 33.716 29.976 74.176 HDTV 1080P
- 10 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5.4. 3D HDMI Input(1.4b)
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 3D input proposed mode
1. 720*480p 63 59.94 / 60 54.00 F/P,L/A
31.5 27.00 T/B,S/S,S/S Full
2. 1280*720p 90.00 59.94 / 60 148.5 F/P, L/A
44.96 / 45 74.17/74.25 S/S, T&B, S/S Full
3. 1920*1080i 67.432 / 67.5 59.94 / 60 148.35/148.5 F/P, F/A
33.75 74.25 S/S, T&B, S/S Full
4. 1920*1080p 54 23.976 / 24 148.5 F/P, L/A
26.973 / 27 23.976 / 24 74.175/74.25 S/S, T&B, S/S Full
5. 1920*1080p 33.716 / 33.75 29.97 / 30.00 74.175/74.25 S/S, T&B, S/S Full
67.50 30.00 148.5 F/P, L/A
60.00 S/S, T&B
5.5. 3D HDMI-PC Input
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 3D input proposed mode
1. 1024*768 48.363 60.004 65.000 2D to 3D, S/S, T&B
2. 1360*768 47.712 60.015 85.500
3. 1920*1080 67.50 60.00 148.50 2D to 3D, S/S, T&B, C/B, R/I, C/I
5.6. HDMI Input(1.3)
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 3D input proposed mode
1. 720*480p 63 59.94 / 60 54.00 2D to 3D, S/S, T&B, C/B, R/I, C/I
31.5 27.00
2. 1280*720p 90.00 59.94 / 60 148.5
44.96 / 45 74.17/74.25
3. 1920*1080i 67.432 / 67.5 59.94 / 60 148.35/148.5 2D to 3D, S/S, T&B
33.75 74.25
4. 1920*1080p 54 23.976 / 24 148.5 2D to 3D, S/S, T&B, C/B, R/I, C/I
26.973 / 27 23.976 / 24 74.175/74.25
5. 1920*1080p 33.716 / 33.75 29.97 / 30.00 74.175/74.25
- 11 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5.7. USB/DLNA Input
5.7.1. 3D Auto detection
No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) 3D input proposed mode Proposed
1 1920*1080 33.75 30.000 74.25 Side-by-side, Top-and-Bottom
Checkerboard, Row Interleaving,
Column Interleaving, Frame Sequentia
(Photo : Side-by-side,
Top-and-Bottom)
HDTV 1080P
5.7.2. 3D Manual(Movie)
No. Resolution H-freq(kHz) V-freq.(kHz) 3D input proposed mode
1 Under 704*480 - - 2D to 3D
2 Over 704*480i 2D to 3D,Side-by-side ,
Top-and-Bottom
3 Over 704*480p 50/60 2D to 3D,Side-by-side ,
Top-and-Bottom
Checkerboard,
Row Interleaving,
Column Interleaving,
Frame Sequential
4 Over 704*480p Others 2D to 3D,Side-by-side ,
Top-and-Bottom
Checkerboard,
Row Interleaving,
Column Interleaving
5.7.3. 3D Manual(Photo)
No. Resolution H-freq(kHz) V-freq.(kHz) 3D input proposed mode
1 Under 320*240 - - 2D to 3D
2 Over 320*240 2D to 3D,Side-by-side ,
Top-and-Bottom
- 12 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5.8. Miracast/Widi Input
5.8.1. 3D Manual
No. Resolution H-freq(kHz) V-freq.(kHz) 3D input proposed mode
1 1024*768p - 30/60 2D to 3D,Side-by-side ,
Top-and-Bottom
2 1280*720p
3 1920*1080p
4 Others - 2D to 3D
5.8.2. RF 3D Input(DTV)
No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed 3D input proposed mode
1 1280*720 45.000 60 74.25 HDTV 720P 2D to 3D, Side by Side, Top & Bottom
2 1920*1080 33.75 60 74.25 HDTV 1080I 2D to 3D, Side by Side, Top & Bottom
5.9. 2D to 3D Conversion(RF 3D Input(DTV))
No INPUT Freq Resolution
1 Digital TV / Analog TV 2D Support freq 2D Support resolution
2 HDMI 2D Support freq 2D Support resolution
3 Component 2D Support freq 2D Support resolution
4 Composite 2D Support freq 2D Support resolution
5 USB 2D Support freq 2D Support resolution
No Side by Side Top & Bottom Checkerboard Single Frame
Sequential
Frame Packing 2D to 3D
1
- 13 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
ADJUSTMENT INSTRUCTION
1. Application
This spec. sheet applies to LA51H Chassis applied LED TV all
models manufactured in TV factory
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 ±5
ºC
of temperature and 65±10% 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
ºC
In case of keeping module is in the circumstance of 0°C, it
should be placed in the circumstance of above 15°C for 2
hours
In case of keeping module is in the circumstance of below
-20°C, it should be placed in the circumstance of above
15°C for 3 hours.
※ Caution
When still image is displayed for a period of 20 minutes or
longer (especially where W/B scale is strong.
Digital pattern 13ch and/or Cross hatch pattern 09ch), there
can some afterimage in the black level area
3. Adjustment items
3.1. Main PCBA Adjustments
(1) ADC adjustment(OTP) : Component
(2) EDID downloads for HDMI
3.2. Final assembly adjustment
(1) White Balance adjustment
(2) RS-232C functionality check
(3) Factory Option setting per destination
(4) Shipment mode setting (In-Stop)
(5) GND and HI-POT test
3.3. Appendix
(1) Tool option menu, USB Download (S/W Update, Option and
Service only)
(2) Manual adjustment for ADC calibration and White balance.
(3) Shipment conditions, Channel pre-set
4. MAIN PCBA Adjustments
4.1. ADC Calibration
- An ADC calibration is not necessary because MAIN SoC
(LGExxxx) is already calibrated from IC Maker
- If it needs to adjust manually, refer to appendix.
4.2. MAC Address, ESN Key and Widevine
Key download
4.2.1. Equipment & Condition
1) Play file: keydownload.exe
4.2.2. Communication Port connection
1) Key Write: Com 1,2,3,4 and 115200 (Baudrate)
2) Barcode: Com 1,2,3,4 and 9600 (Baudrate)
4.2.3. Download process
1) Select the download items.
2) Mode check: Online Only
3) Check the test process
- US, Canada models: DETECT -> MAC_WRITE ->
WIDEVINE_WRITE
- Korea, Mexico models: DETECT -> MAC_WRITE ->
WIDEVINE_WRITE
4) Play : START
5) Check of result: Ready, Test, OK or NG
4.2.4. Communication Port connection
1) Connect: PCBA Jig -> RS-232C Port == PC -> RS-232C
Port
4.2.5. Download
1) US, Canada models (14Y LCD TV + MAC + Widevine +
ESN Key + DTCP Key + HDCP1.4 and HDCP2.0)
4.2.6. Inspection
- In INSTART menu, check these keys.
- 14 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
4.3. LAN port Inspection (Ping Test)
4.3.1. Equipment setting
1) Play the LAN Port Test PROGRAM.
2) Input IP set up for an inspection to Test Program.
- IP number: 12.12.2.2
4.3.2. LAN PORT inspection (PING TEST)
1) Play the LAN Port Test Program.
2) Connect each other LAN Port Jack.
3) Play Test (F9) button and confirm OK Message.
4) Remove LAN CABLE
Step 1) Step 3) Check ‘OK’ Signal
4.4. EDID Download
4.4.1 Overview
▪ It is a VESA regulation. A PC or a MNT will display an
optimal resolution through information sharing without any
necessity of user input. It is a realization of “Plug and Play”.
4.4.2 Equipment
▪ Since embedded EDID data is used, EDID download JIG,
HDMI cable and D-sub cable are not need.
▪ Adjust remocon
4.4.3. EDID DATA
4.4.3.1. 2D_8bit_PCM(US) _ xvYCC : off
HDMI EDID 2D_8bit_PCM(US)_xvYCC : off
▪Reference
- HDMI1 ~ HDMI3
- In the data of EDID, bellows may be different by S/W or Input
mode.
ⓐ Product ID
HEX EDID Table DDC Function
0001 0100 Analog
0001 0100 Digital
ⓑ Serial No: Controlled on production line.
ⓒ Month, Year: Controlled on production line:
ex) Monthly : ‘01’ -> ‘01’
Year : ‘2015’ -> ‘19’
ⓓ Model Name(Hex): LGTV
Chassis MODEL NAME(HEX)
LA51H 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20
ⓔ Checksum(LG TV): Changeable by total EDID data.
ⓔ1 ⓔ2 ⓔ3
HDMI1 E6 E0 X
HDMI2 E6 D0 X
HDMI3 E6 C0 X
ⓕ Vendor Specific(HDMI)
INPUT MODEL NAME(HEX)
HDMI1 67 03 0C 00 10 00 80 1E
HDMI2 67 03 0C 00 20 00 80 1E
HDMI3 67 03 0C 00 30 00 80 1E
- 15 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
4.4.3.2. 2D_10bit_PCM(US) _ xvYCC : off
HDMI EDID 2D_10bit_PCM(US)_xvYCC : off
▪Reference
- HDMI1 ~ HDMI3
- In the data of EDID, bellows may be different by S/W or Input
mode.
ⓐ Product ID
HEX EDID Table DDC Function
0001 0100 Analog
0001 0100 Digital
ⓑ Serial No: Controlled on production line.
ⓒ Month, Year: Controlled on production line:
ex) Monthly : ‘01’ -> ‘01’
Year : ‘2015’ -> ‘19’
ⓓ Model Name(Hex): LGTV
Chassis MODEL NAME(HEX)
LA51H 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20
ⓔ Checksum(LG TV): Changeable by total EDID data.
ⓔ1 ⓔ2 ⓔ3
HDMI1 E6 99 X
HDMI2 E6 89 X
HDMI3 E6 79 X
ⓕ Vendor Specific(HDMI)
INPUT MODEL NAME(HEX)
HDMI1 67 03 0C 00 10 00 B8 2D
HDMI2 67 03 0C 00 20 00 B8 2D
HDMI3 67 03 0C 00 30 00 B8 2D
4.4.3.3. 3D_8bit_PCM(US) _ xvYCC : off
HDMI EDID 3D_8bit_PCM(US)_xvYCC : off
▪Reference
- HDMI1 ~ HDMI4
- In the data of EDID, bellows may be different by S/W or Input
mode.
ⓐ Product ID
HEX EDID Table DDC Function
0001 0100 Analog
0001 0100 Digital
ⓑ Serial No: Controlled on production line.
ⓒ Month, Year: Controlled on production line:
ex) Monthly : ‘01’ -> ‘01’
Year : ‘2015’ -> ‘19
ⓓ Model Name(Hex): LGTV
Chassis MODEL NAME(HEX)
LA51H 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20
ⓔ Checksum(LG TV): Changeable by total EDID data.
ⓔ1 ⓔ2 ⓔ3
HDMI1 E6 FC X
HDMI2 E6 EC X
HDMI3 E6 DC X
HDMI4
(LB87 only)
E6 CC X
ⓕ Vendor Specific(HDMI)
INPUT MODEL NAME(HEX)
HDMI1 78 03 0C 00 10 00 80 1E 20 CO 0E 01 4F 00
FE 08 10 06 10 18 10 28 10 38 10
HDMI2 78 03 0C 00 20 00 80 1E 20 CO 0E 01 4F 00
FE 08 10 06 10 18 10 28 10 38 10
HDMI3 78 03 0C 00 30 00 80 1E 20 CO 0E 01 4F 00
FE 08 10 06 10 18 10 28 10 38 10
HDMI4
(LB87 Only)
78 03 0C 00 30 00 80 1E 20 CO 0E 01 4F 00
FE 08 10 06 10 18 10 28 10 38 10
- 16 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
4.4.3.4. 3D_10bit_PCM(US) _ xvYCC : off
HDMI EDID 3D_10bit_PCM(US)_xvYCC : off
▪Reference
- HDMI1 ~ HDMI3
- In the data of EDID, bellows may be different by S/W or Input
mode.
ⓐ Product ID
HEX EDID Table DDC Function
0001 0100 Analog
0001 0100 Digital
ⓑ Serial No: Controlled on production line.
ⓒ Month, Year: Controlled on production line:
ex) Monthly : ‘01’ -> ‘01’
Year : ‘2015’ -> ‘19
ⓓ Model Name(Hex): LGTV
Chassis MODEL NAME(HEX)
LA51H 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20
ⓔ Checksum(LG TV): Changeable by total EDID data.
ⓔ1 ⓔ2 ⓔ3
HDMI1 E6 B5 X
HDMI2 E6 A5 X
HDMI3 E6 95 X
ⓕ Vendor Specific(HDMI)
INPUT MODEL NAME(HEX)
HDMI1 78 03 0C 00 10 00 B8 2D 20 C0 0E 01 4F 00 FE
08 10 06 10 18 10 28 10 38 10
HDMI2 78 03 0C 00 20 00 B8 2D 20 C0 0E 01 4F 00 FE
08 10 06 10 18 10 28 10 38 10
HDMI3 78 03 0C 00 30 00 B8 2D 20 C0 0E 01 4F 00 FE
08 10 06 10 18 10 28 10 38 10
5. Final Assembly Adjustment
5.1. White Balance Adjustment
5.1.1. Overview
5.1.1.1. W/B adj. Objective & How-it-works
(1) Objective: To reduce each Panel’s W/B deviation
(2) How-it-works: When R/G/B gain in the OSD is at 192, it
means the panel is at its Full Dynamic Range. In order to
prevent saturation of Full Dynamic range and data, one of
R/G/B is fixed at 192, and the other two is lowered to find
the desired value.
(3) Adj. condition: normal temperature
- Surrounding Temperature: 25±5 °C
- Warm-up time: About 5 Min
- Surrounding Humidity: 20% ~ 80%
- Before White balance adjustment, Keep power on status,
don’t power off
5.1.1.2. Adj. condition and cautionary items
(1) Lighting condition in surrounding area surrounding lighting
should be lower 10 lux. Try to isolate adj. area into dark
surrounding.
(2) Probe location: Color Analyzer (CA-210) probe should be
within 10cm and perpendicular of the module surface
(80°~ 100°)
(3) Aging time
- After Aging Start, Keep the Power ON status during 5
Minutes.
- In case of LCD, Back-light on should be checked using no
signal or Full-white pattern.
5.1.2. Equipment
(1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12 / LED:
CH14)
(2) Adj. Computer (During auto adj., RS-232C protocol is
needed)
(3) Adjust Remocon
(4) Video Signal Generator MSPG-925F 720p/204-Gray
(Model: 217, Pattern: 49)
※ Color Analyzer Matrix should be calibrated using CS-1000
5.1.3. Equipment connection
- 17 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5.1.4. Adjustment Command (Protocol)
(1) RS-232C Command used during auto-adj.
RS-232C COMMAND
Explanation
CMD DATA ID
Wb 00 00 Begin White Balance adj.
Wb 00 ff End White Balance adj.
(internal pattern disappears )
(2) Adjustment Map
Adj. item Command
(lower caseASCII)
Data Range
(Hex.)
CMD1 CMD2 MIN MAX
Cool R Gain j g 00 C0
G Gain j h 00 C0
B Gain j i 00 C0
Medium R Gain j a 00 C0
G Gain j b 00 C0
B Gain j c 00 C0
Warm R Gain j d 00 C0
G Gain j e 00 C0
B Gain j f 00 C0
5.1.5. Adjustment method
5.1.5.1. Auto WB calibration
(1) Set TV in ADJ mode using P-ONLY key (or POWER ON
key)
(2) Place optical probe on the center of the display
- It need to check probe condition of zero calibration before
adjustment.
(3) Connect RS-232C Cable
(4) Select mode in ADJ Program and begin a adjustment.
(5) When WB adjustment is completed with OK message,
check adjustment status of pre-set mode (Cool, Medium,
Warm)
(6) Remove probe and RS-232C cable.
▪ W/B Adj. must begin as start command “wb 00 00” , and
finish as end command “wb 00 ff”, and Adj. offset if need
5.1.5.2. Manual adjustment
(1) Set TV in Adj. mode using POWER ON
(2) Zero Calibrate the probe of Color Analyzer, then place it on
the center of LCD module within 10cm of the surface..
(3) Press ADJ key -> EZ adjust using adj. R/C à 9. White-
Balance then press the cursor to the right (KEY►). When
KEY(►) is pressed 206 Gray internal pattern will be
displayed.
(4) Adjust Cool modes
(i) Fix the one of R/G/B gain to 192 (default data) and
decrease the others.
( If G gain is adjusted over 172 and R and B gain less than
192 , Adjust is O.K.)
(ii) If G gain is less than 172,
Increase G gain by up to 172, and then increase R gain and
G gain same amount of increasing G gain.
(iii) If R gain or B gain is over 255,
Readjust G gain less than 172, Conform to R gain is 255 or
B gain is 255
(5) Adjust two modes (Medium / Warm) Fix the one of R/G/B
gain to 192 (default data) and decrease the others.
(6) Adj. is completed, Exit adjust mode using “EXIT” key on
Remote controller.
5.1.6. Reference (White Balance Adj. coordinate and
color temperature)
(1) Luminance: 204 Gray, 80IRE
(2) Standard color coordinate and temperature using CS-1000
(over 26 inch)
5.1.7. Reference (White Balance Adj. coordinate and
color temperature)
▪ Luminance: 204 Gray
▪ Standard color coordinate and temperature using CS-1000
(over 26 inch)
Mode
Coordinate
Temp △uv
X Y
Cool 0.271 0.270 13,000K 0.0000
Medium 0.286 0.289 9,300K 0.0000
Warm 0.313 0.329 6,500K 0.0000
- 18 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
▪ Standard color coordinate and temperature using
CA-210(CH-14) – by aging time
(1) Normal line in Korea (From January to February) : LGD
(LB5xxx, LB6xxx, LB7xxx, LB8xxx Series models)
Aging time
(Min)
Cool Medium Warm
X Y X Y X Y
271 270 286 289 313 329
1 0-2 286 295 301 314 328 354
2 3-5 284 290 299 309 326 349
3 6-9 282 287 297 306 324 346
4 10-19 279 283 294 302 321 342
5 20-35 276 278 291 297 318 337
6 36-49 274 275 289 294 316 334
7 50-79 273 272 288 291 315 331
8 80-119 272 271 287 290 314 330
9 Over 120 271 270 286 289 313 329
▪ Standard color coordinate and temperature using
CA-210(CH-14) – by aging time
(2) Normal line in Korea (From March to December) : LGD
(LB5xxx, LB6xxx, LB7xxx, LB8xxx Series models)
Normal line in Mexico : LGD (LB5xxx, LB6xxx, LB7xxx,
LB8xxx Series models)
Aging time
(Min)
Cool Medium Warm
X Y X Y X Y
271 270 286 289 313 329
1 0-2 282 289 297 308 324 348
2 3-5 281 287 296 306 323 346
3 6-9 279 284 294 303 321 343
4 10-19 277 280 292 299 319 339
5 20-35 275 277 290 296 317 336
6 36-49 274 274 289 293 316 333
7 50-79 273 272 288 291 315 331
8 80-119 272 271 287 290 314 330
9 Over 120 271 270 286 289 313 329
(3) O/S Module(AUO, INX, Sharp, CSOT, BOE)
cool med warm
x y x y x y
spec 271 270 286 289 313 329
target 278 280 293 299 320 339
5.2. Option selection per country
5.2.1. Overview
(1) Tool option selection is only done for models in Non-USA
North America due to rating
(2) Applied model: LA42B Chassis applied to CANADA and
MEXICO
5.2.2. Country Group selection
(1) Press ADJ key on the Adj. R/C, and then select Country
Group Menu
(2) Depending on destination, select US, then on the lower
Country option, select US, CA, MX.
Selection is done using +, - KEY
5.2.3. Tool Option inspection
▪ Press Adj. key on the Adj. R/C, then select Tool option
* Tool option can be reconstructed by Software
5.3. Magic Motion remote controller Check
5.3.1. Test equipment
▪ RF-remote controller for check, IR-KEY-CODE remote
controller.
▪ Check AA battery before test. A recommendation is that a
tester change battery every lots.
5.3.2. Test
(1) Make pairing with TV set by pressing “Start key(Wheel
key)” on RCU.
(2) Check a cursor on screen by pressing ‘Wheel key” of RCU
(3) Stop paring with TV set by pressing “Back+ Home” key of
RCU
5.3.3. Applied models
Chassis Model Name Magic RF receiver
LA51H LF6300-UA Built-in
- 19 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5.4. Wi-Fi MAC Address Check
5.4.1. Using RS232 Command
Command Set ACK
Transmission [A][l][][Set ID][][20][Cr] [O][K][x] or [N][G]
5.4.2. Check the menu on in-start
5.5. 3D pattern test (Only for 3D models)
5.5.1. Test equipment
(1) Pattern Generator MSHG-600 or MSPG-6100 (HDMI 1.4
support)
(2) Pattern: HDMI mode (model No. 872, pattern No. 83)
5.5.2. Test method
(1) Input 3D test signal as Fig.1.
(2) Press ‘OK” key as a 3D input OSD is shown.
(3) Check pattern as Fig2 without 3D glasses. (3D mode
without 3D glasses)
Fig.2 Fig.3
<OK in 3D mode without 3D glasses> <NG in 3D mode without 3D glasses>
5.5.3. 3D Inner pattern
(1). Using RS232 Command
Command Set ACK
Transmission [A][I][ ][Set ID][ ][72][Cr] [O][K][x] or [N][G][x]
(2) It support internal 3D pattern without ‘MASTER’ equipment.
Except that one, other method is same when use the
‘MASTER’ equipment
5.6. HDMI ARC Function Inspection
5.6.1. Test equipment
- Optic Receiver Speaker
- MSHG-600 (SW: 1220 ↑)
- HDMI Cable (for 1.4 version)
5.6.2. Test method
(1) Insert the HDMI Cable to the HDMI ARC port from the
master equipment (HDMI1)
(2) Check the sound from the TV Set
(3) Check the Sound from the Speaker or using AV & Optic
TEST program (It’s connected to MSHG-600)
* Remark: Inspect in Power Only Mode and check SW version
in a master equipment
- 20 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5.7. EYE-Q Green Function Inspection
Step 1) Turn on the TV..
Step 2) Press 'EYE button' on the adjustment remote-
controller.
Step 3) Cover 'Eye Q sensor' on the front of set with your
hands, hold it for 6 seconds.
Step 4) Check "the Sensor Data" on the screen, make certain
that Data is below 10. If Data isn’t below 10 in 6
seconds, Eye Q sensor would be bad. You should
change Eye Q sensor.
Step 5) Uncover your hands from Eye Q sensor, hold it for 6
seconds.
Step 6) Check "Back Light(xxx)" on the screen, check data
increase . You should change Eye Q sensor.
5.8. Ship-out mode check (In-stop)
▪ After final inspection, press In-Stop key of the Adj. R/C and
check that the unit goes to Stand-by mode.
6. AUDIO output check
6.1. Audio input condition
(1) RF input: Mono, 1KHz sine wave signal, 100% Modulation
(2) CVBS, Component: 1KHz sine wave signal (0.4Vrms)
6.2. Specification
No Item Min Typ Max Unit Remark
1 Audio
practical
max Output,
L/R
(Distor-
tion=10%
max Output)
9.0
8.5
10.0
8.9
12.0
9.9
W
Vrms
(1) Measurement
condition
- EQ/AVL/Clear
Voice: Off
(2) Speaker (8Ω
Impedance)
ALL MODEL
7. GND and HI-POT Test
7.1. GND & HI-POT auto-check preparation
(1) Check the POWER CABLE and SIGNAL CABE insertion
condition
7.2. GND & HI-POT auto-check
(1) Pallet moves in the station. (POWER CORD / AV CORD is
tightly inserted)
(2) Connect the AV JACK Tester.
(3) Controller (GWS103-4) on.
(4) GND Test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, execute next process (Hi-pot test).
(Remove A/V CORD from A/V JACK BOX)
(5) HI-POT test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, GOOD Lamp on and move to next process
automatically.
8.3. Checkpoint
(1) Test voltage
Products/Model TV MNT, Projec-
tor
2Poles Japan 1500V(AC)/
2121v(DC)
3000V(AC)/
4242V(DC)
Other 3000V(AC)/
4242V(DC)
3Poles Japan 800V(AC)/
1131(DC)
1500V(AC)/
2121(DC)
Other 1500V(AC)/
2121V(DC)
Cut off current 100mA(AC)/100mA(DC)
Earth Continutiy test
(2) TEST time: 1 second
(3) TEST POINT
- GND Test = POWER CORD GND and SIGNAL CABLE GND.
- Hi-pot Test = POWER CORD GND and LIVE & NEUTRAL.
(4) LEAKAGE CURRENT: At 0.5mArms
- 21 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
9. USB S/W Download
(optional, Service only)
(1) Put the USB Stick to the USB socket
(2) Automatically detecting update file in USB Stick
- If your downloaded program version in USB Stick is lower
than that of TV set, it didn’t work. Otherwise USB data is
automatically detected.
(3) Show the message “Copying files from memory”
(4) Updating is staring.
(5) Updating Completed, The TV will restart automatically
(6) If your TV is turned on, check your updated version and
Tool option.
* If downloading version is more high than your TV have, TV
can lost all channel data. In this case, you have to channel
recover. If all channel data is cleared, you didn’t have a DTV/
ATV test on production line.
* After downloading, TOOL OPTION setting is needed again.
(1) Push "IN-START" key in service remote controller.
(2) Select "Tool Option 1" and Push “OK” button.
(3) Punch in the number. (Each model has their number.)
10. Optional adjustments
10.1. Manual White balance Adjustment
10.1.1. Adj. condition and cautionary items
(1) Lighting condition in surrounding area surrounding lighting
should be lower 10 lux. Try to isolate adj. area into dark
surrounding.
(2) Probe location: Color Analyzer (CA-210) probe should be
within 10cm and perpendicular of the module surface
(80°~ 100°)
(3) Aging time
- After Aging Start, Keep the Power ON status during 5
Minutes.
- In case of LCD, Back-light on should be checked using no
signal or Full-white pattern
10.1.2. Equipment
(1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12 / LED:
CH14)
(2) Adj. Computer (During auto adj., RS-232C protocol is
needed)
(3) Adjust Remocon
(4) Video Signal Generator MSPG-925F 720p/216-Gray
(Model: 217, Pattern: 78)
10.1.3. Adjustment
(1) Set TV in Adj. mode using POWER ON
(2) Zero Calibrate the probe of Color Analyzer, then place it on
the center of LCD module within 10cm of the surface.
(3) Press ADJ key -> EZ adjust using adj. R/C -> 6. White-
Balance then press the cursor to the right (KEY►).
When KEY(►) is pressed 216 Gray internal pattern will be
displayed.
(4) One of R Gain / G Gain / B Gain should be fixed at 192,
and the rest will be lowered to meet the desired value.
(5) Adj. is performed in COOL, MEDIUM, WARM 3 modes of
color temperature.
▪ If internal pattern is not available, use RF input. In EZ Adj.
menu 6.White Balance, you can select one of 2 Test-pattern:
ON, OFF. Default is inner(ON). By selecting OFF, you can
adjust using RF signal in 216 Gray pattern.
- 22 -
LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
EXPLODED VIEW
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
900
200
400
800
540
810
910
521
530
410
820
500
570
121
120
LV1
LV2
A2
A10
A22
2015
Engineering guide
< Applicable Model – Mid end >
40/43/49/55/60/65LF6300
42/47/50/55/60LF6500
◈ CONTENT ◈
1. ‘2015 Product line-up and features
2. Model naming and tool option
3. New features
4. Main PCBs
5. Block Diagrams, IIC Map
6. Structure of TV set and connection of sub assy’s
7. New sub assy’s
- Instruction of new sub assy’s
- How to use tool
- Download
8. Repair guide
◈ CONTENT ◈
1. ‘2015 Product line-up and features
2. Model naming and tool option
3. New features
4. Main PCBs
5. Block Diagrams, IIC Map
6. Structure of TV set and connection of sub assy’s
7. New sub assy’s
- Instruction of new sub assy’s
- How to use tool
- Download
8. Repair guide
US
◈ CONTENT ◈
1. ‘2014 Product line-up and features
2. Model naming and tool option
3. New features
4. Main PCBs
5. Block Diagrams, IIC Map
6. Structure of TV set and connection of sub assy’s
7. New sub assy’s
- Instruction of new sub assy’s
- How to use tool
- Download
8. Repair guide
- 6/83 -
Standard of 2015 Model Name
Description of Tool Options
Model naming and Tool option
◈ CONTENT ◈
1. ‘2014 Product line-up and features
2. Model naming and tool option
3. New features
4. Main PCBs
5. Block Diagrams, IIC Map
6. Structure of TV set and connection of sub assy’s
7. New sub assy’s
- Instruction of new sub assy’s
- How to use tool
- Download
8. Repair guide
webOS Architecture
◈ CONTENT ◈
1. ‘2014 Product line-up and features
2. Model naming and tool option
3. New features
4. Main PCBs
5. Block Diagrams, IIC Map
6. Structure of TV set and connection of sub assy’s
7. New sub assy’s
- Instruction of new sub assy’s
- How to use tool
- Download
8. Repair guide
Main PCB for Broadband
To PSU
1
2
3
1
Main processor, DDR Memory
eMMC Memory
2
3
4
Micom for Key/IR sensing
Audio AMP (10W+10W)
LVDS or EPI Wafer
40/43/49/55LF6300
1. Key + IR
Front Spk
To module
4
Chassis : LA51H
PCB P/No : EAX66202603
2. WIFI + BT
5
PSU
WiFi + BT(Magic Remocon receiver)
5
Tuner
Main PCB for Broadband
To PSU
1
2
3
1
Main processor, DDR Memory
eMMC Memory
2
3
4
Micom for Key/IR sensing
Audio AMP (12W+12W)
LVDS or EPI Wafer
1. Key + IR
Front Spk
To module
4
2. WIFI + BT
5
PSU
WiFi + BT(Magic Remocon receiver)
5
Tuner
60/65LF6300
60LF6500
Chassis : LA51H
PCB P/No : EAX66202603
Main PCB for Broadband
To PSU
1
2
3
1
Main processor, DDR Memory
eMMC Memory
2
3
4
Micom for Key/IR sensing
Audio AMP (12W+12W)
LVDS or EPI Wafer
42/47/50/55LF6500
1. Key + IR
Front Spk
To module
4
2. WIFI + BT
5
PSU
WiFi + BT(Magic Remocon receiver)
5
Tuner
Chassis : LA51H
PCB P/No : EAX66202603
◈ CONTENT ◈
1. ‘2014 Product line-up and features
2. Model naming and tool option
3. New features
4. Main PCBs
5. Block Diagrams, IIC Map
6. Structure of TV set and connection of sub assy’s
7. New sub assy’s
- Instruction of new sub assy’s
- How to use tool
- Download
8. Repair guide
Audio AMP
(NTP7515)
IC101
M14+
Digital Demod
IF (+/-)
USB1
OPTIC
LAN
DDR3 1600 X 16
(512MB X 2EA)
HDMI1
HDMI2
HDMI3
Analog Demod
SYSTEM EEPROM
(256Kb)
HDMI
MUX
USB2
USB3
41P
51P
eMMC
(8GB)
Sub Micom
(RENESAS
R5F1000G)
DDR3 1600 X 16
(256MB X 2EA)
P_TS
50P
50P
X_TAL
24MHz
A B
X_TAL
32.768KHz
I2S Out
I2C 1
EPI
I2C 2
LVDS
USB
I2C 5
H/P (Line Out)
AV/COMP
D-Demod : I2C 4
OCP
1.5A
OCP
1.5A
(ARC)
R
E
A
R
S
I
D
E
S
I
D
E
R
E
A
R
(H)
AMP
TI
CVBS/YPbPr
SPDIF OUT
ETHERNET
I2C 3
LOCAL DIMMING
BLUTOOTH
IR / KEY/EYE
PM
IC
WIFI
SUB
ASSY
I2C 2
IR
KEY
USB_WIFI-BT
(IR Bla Ready)
Tuner : I2C 6
LAN
PHY
OCP
1A
(MHL)
X_TAL
25MHz
I2C
CVBS/SIF
Tuner
LNB
1. M14+ Block Diagram
33Ω
+3.3V_NORMAL
3.3KΩ
TUNER
3.3KΩ
+3.3V_NORMAL
I2C_SDA3
I2C_SCL3
I2C_SDA2
I2C_SCL2
IC6900
LNB
33Ω
22Ω
33Ω
+3.3V_NORMAL
3.3KΩ
IC7700
PMIC
I2C_SDA1
I2C_SCL1
+3.3V_NORMAL
3.3KΩ
IC5600
NTP7515(AMP)
I2C_SDA0
I2C_SCL0
100 Ω
IC103
NVRAM
3.3KΩ
+3.3V_NORMAL
I2C_SDA4
I2C_SCL4
33Ω
I2C_SDA5
I2C_SCL5
TUNER (Demod)
3.3KΩ
+3.3V_NORMAL
33Ω
IC101
M14+
2. M14+ I2C Block Diagram
IR / KEY/EYE
100Ω
+3.5V_ST
3.3KΩ
IC3000
Renesas MICOM
EYE_I2C_SDA
EYE_I2C_SCL
3. Power Block Diagram
4. Tuner Block Diagram
IC101
M14+
Tuner
AJ5 [GPIO22]
AG23[SCL5]
AH24 [SDA5]
[SLC] 4
[SDA] 5
[+3.3V_TUNER] 1, 11
[+.1.1V_TUNER] 28
[M_DIF_P] 6
[M_DIF_N] 7
S_SIF 9
S_CVBS 8
[S_Error] 12
[S_SYNC] 14
[S_VALID] 15
[S_MCLK] 16
[S_Data] 17
AH33 [TP_DVB_ERR]
AH32 [TP_DVB_SYNC]
AH31 [TP_DVB_VAL]
AH30 [TP_DVB_CLK]
[S_RESET] 25
AG17 [GPIO6]
[+3.3V_S_DEMOD] 26
[S_SCL] 27
[S_SDA] 30
AP6 [SCL3]
AR6 [SDA3]
AK28 [DMD_ADC_INP]
AL28 [DMD_ADC_INN]
AK29[DMD_ADC_SIF]
AL27[CVBS_IN1]
AM29[IFAGC]
IC2_SCL6
IC2_SDA6
FE_DEMOD1_TS_ERROR
FE_DEMOD1_TS_SYNC
FE_DEMOD1_TS_VAL
FE_DEMOD1_TS_CLK
/S2_RESET
LNB_TX
I2C_SCL4
I2C_SDA4
+3.3V_TU
3.3K Ω
+1.1_D_Demod
+3.3V_TU
+3.3V_D_Demod
IF_P
IF_N
TUNER_SIF(for T2/C/S)
TU_CVBS(for T2/C/S)
IF_AGC
33Ω
M_DIF_IFAGC 3
LPF LPF
6dB TR AMP
AK27 [DMD_DAC_OUT]
AL27 [CVBS_IN1]
AK29 [AAD_ADC_OUT]
AL30 [DMD_SIF_OUT]
SoC_CVBS_OUT
DMD_SIF_OUT
1.5K Ω
+3.3V_TU
22 Ω
5. Video/Audio In Block Diagram
IC101
M14+
[CVBS_IN3/Y2_IN/SOY2_IN]
Tuner
Jack Side
SoC Side
JK3802
COMP1_Y/AV1_CVBS
COMP1_Pb
COMP1_Pr
COMP1/AV1/DVI_L_IN
COMP1/AV1/DVI_R_IN
AV1_CVBS_IN_SOC
COMP2_Y_IN_SOC
COMP2_Y_IN_S0C_S0Y
COMP2_Pb__IN_SOC
[PB2_IN]
[PR2_IN]
[AUDA_L_CH3_IN]
COMP2_PR_IN_SOC
AUAD_L_CH3_IN
[AUDA_R_CH3_IN]
AUAD_R_CH3_IN
TU_CVBS
TUNER_SIF/IF_P/N
[CVBS_IN2]
[SC1_SID, SC1_FB]
[PB1_IN/Y1_IN/SOY1_IN/PR1_IN]
[AUDA_L_CH2_IN/AUDA_R_CH2_IN]
[CVBS_IN1]
[DMD_ADC_INP/DMD_ADC_INN]
TU_CVBS_SOC
TUNER_SIF
ADC_I_INP
ADC_I_INN
[AAD_ADC-SIF]
6. Audio Out Block Diagram
SPDIF_OUT
IC5600
Audio AMP
LPF
AUAD_L_CH3_IN
AUAD_R_CH3_IN
[IEC9580UT]
Tuner
[AUDA_SCART_OUTL]
[AUDA_SCART_OUTR]
AUD_LRCH
SOC_RX/SOC_TX
Service_Only
4P WAFER
[UART0_RXD]
[UART0_TXD]
IC101
M14+
TUNER_SIF
[DAC_SCK]
[DAC_LRCH]
AUD_LRCK
AUD_SCK
[DAC_LRCK]
[SDA0]
[SCL0]
I2C_SDA1
I2C_SCL1
IC3000
MICOM
AMP_MUTE
[AUDA_L_CH2_IN]
[AUDA_R_CH2_IN]
[AUDA_L_CH3_IN]
[AUDA_R_CH3_IN]
JK3802
AUD_MASTER_CLK
[AUDCLK_OUT]
[GPIO21]
AMP_RESET_N
IC6800
MAX3232CDR
RS232
JK3401
JK3403
LPF
SPEAKER_L
SPEAKER_R
[AAD_ADC-SIF]
RIN1/DOUT1
7. HDMI
HDMI1
HDMI2
HDMI3
CEC_REMOTE
RENESAS
MICOM
HDMI_CEC
IC101
M14+
Q3001
DDC_SCL_1
DDC_SCL_2
DDC_SDA_2
TMDS Link 8bits
SPDIF_OUT_A
RC
DDC_SDA_1
X-tal
32.768kHz
TMDS Link 8bits
TMDS Link 8bits
WOL_CT
L
DDC_SCL_4
DDC_SDA_4
TMDS Link or MHL Link
HDMI_HPD
HDMI_HPD
HDMI_HPD
EPI Tx
Block
IC101
M14+
8. Panel Interface Block Diagram
50Pin X 2
PANEL_VCC (+12V)
EPI CH5/6/7/8+/-
EPI CH1/2/3/4+/-
GMA1/GMA3/GAM9/GMA10/GMA16/GMA18
VDD
VCC1.8
EO/GST/GCLK/MCLK
EPI_LOCK8 EPI_LOCK8
TR/
Diode
TR/
Diode
SWP
CTRLP
SWN
CTRLN
VGH
VGL
6
6
8
6
8
I2C
4
4
4
VGH_ODD/EVEN,VST,GIP_RST
4
6
6
CLK1~CLK6
6
6
GMA4/GMA5/GAM7/GMA12/GMA14/GMA15
2CH
OP AMP
PVCOM
LEFT
RIGHT
VCOM 1/2 - Top/Bottom
H_VDD
VCOMRFB
VCOMLFB
VGH_ODD/EVEN,VST,GIP_RST
CLK1~CLK6
GMA4/GMA5/GAM7/GMA12/GMA14/GMA15
PMIC+L/S
TPS65175
EPI_LOCK4
9. USB 2.0 / WIFI-BT / IR-KEY-EYE
IC101
M14+
USB1
USB3_DP
USB3_DM
[USB3_DP0]
[USB3_DM0]
USB2
USB_DP2
USB_DM2
[HUB_PORT_OVER0]
OCP
OCP
+5V_USB_1
+5V_USB_2
/USB_OCD1
USB_CTL1
USB_CTL2
/USB_OCD2
WIFI-BT_DM
WIFI-BT_DP
EYY_SCL
EYE_SDA
[USB2_0_DP0]
[USB2_0_DM0]
USB_DP3
+5V_USB_3
USB_CTL3
/USB_OCD3
USB3
USB_DM3
[HUB_VBUS_CTRL0]
IC 4500
IC 4306
[USB3_DP1]
[USB3_DM1]
[EB_CS3]
[EB_CS2]
[USB2_1_DP0]
[USB2_1_DM0]
[EB_CS1]
[EB_CS0]
WIFI-BT
IR-KEY
-EYE
Micom
LED
IR
KEY1
KEY2
◈ CONTENT ◈
1. ‘2014 Product line-up and features
2. Model naming and tool option
3. New features
4. Main PCBs
5. Block Diagrams, IIC Map
6. Structure of set and connection of sub assy’s
7. New sub assy’s
- Instruction of new sub assy’s
- How to use tool
- Download
8. Repair guide
Interconnection
1
Main PCB
2
Power Board
3
IR / Key Assy
1
2
3
4
Main / LPB 12Pin cable
Main / Module LVDS Cable
Module B/light Cable
18Pin IR+key / WIFI/BT Cable
SPK Cable
[PCBs]
[Cables]
1
2
3
1
2
3
4
43LF6300
5
4
4
WIFI/BT Assy
5
◈ CONTENT ◈
1. ‘2014 Product line-up and features
2. Model naming and tool option
3. New features
4. Main PCBs
5. Block Diagrams, IIC Map
6. Structure of TV set and connection of sub ass’ys
7. New sub assy’s
- Instruction of new sub assy’s
- How to use tool
- Download
8. Repair guide
Introductions of 15Y WIFI / BT built in assy + Magic Remote control
Table of Contents
1. System
2. Block diagram
3. Paring method
1. System
Remote
RF Receiver
TV
USB
RF
Pairing Information Transmission (Send to TV after Paired)
• Static Calibration Data (Bypass only)
• Remote FW ver. (Save also in Receiver)
• BD_ADDR (Save also in Receiver)
• Pairing Information Transmission Sequence
• When it is paired, the remote sends packets(pairing success, F/W version, BD_ADDR) to the receiver.
• The receiver sends the pairing success packet to TV directly.
• F/W version and BD_ADDR packets are just saved on the receiver.
• The receiver sends F/W version or BD_ADDR packet to TV when it is required.
Motion Data Transmission
• Period : 7.5msec
• Motion Data : gyro, accelerometer
Voice Data Transmission
• Period : 10msec
• Voice sampling : 16khz 16bit
2. RF Pairing / Un-pairing Method
Method Description
RF Pairing
Method1
– If unpaired, just press Wheel key.
– If paired, press Wheel key after
unpairing.
Method 2 (Repairing)
– Press “BACK" button for 5 sec.
• When do pairing, the remote
should make pairing request IR
signal(0x29) to TV.
• When TV receive the IR signal, it
should send "pairing request
packet" to the RF receiver.
• After pairing success, the remote
should blink LED for some time and
TV send "pairing success packet"
back to TV.
• When remote try to unpairing, it
doesn’t care about state of
receiver(stand alone).
RF Unpairing
Press “HOME" button and “BACK" button at
the same time for 5 sec.
• When remote try to unpairing, it
doesn’t care about state of
receiver(stand alone).
• After unpairing, all pairing
information should be erased.
• After unpairing, LED should be
blinked for 3sec.
• The remote just becomes to IR
mode.
3. WIFI Built in assy feature
BCM43232
Wafer
8pin 1.25mm
GND
USB DP, DN
GND
USB DP, DN
Crystal
37.4MHz
3.3V 1.2V
Switch
RTC6603
Antenna
2.4G/5G
Antenna
2.4G/5G
RX/TX
RX/TX
Block diagram
54
34
VCC
Switch
RTC6608O
BT_REG_ON
3DG
WL_HOST_Wake
BT TX
Antenna
2.4G
TX
RFLPF1608
4. WIFI Built in ass’y Specification
◈ CONTENT ◈
1. ‘2015 Product line-up and features
2. Model naming and tool option
3. New features
4. Main PCBs
5. Block Diagrams, IIC Map
6. Structure of TV set and connection of sub ass’ys
7. New sub ass’ys
- Instruction of new sub ass’ys
- How to use tool
- Download
8. Repair guide
Contents of Standard Repair Process
No. Error symptom (High category) Error symptom (Mid category) Page Remarks
1
A. Video error
No video/Normal audio 1
2 No video/No audio 2
3 Video error, video lag/stop, fail tunning 3, 4
4 Color error 5
5
Vertical/Horizontal bar, residual image, light
spot, external device color error
6
6
B. Power error
No power 7
7
Off when on, off while viewing, power auto
on/off
8
8
C. Audio error
No audio/Normal video 9
9 Wrecked audio/discontinuation/noise 10
10
D. Function error
No response in remote controller, key error,
recording error, memory error
11
11 External device recognition error 12
12 E. Noise Circuit noise, mechanical noise 13
13 F. Exterior error Exterior defect 14
First of all, Check whether there is SVC Bulletin in GCSC System for these model.
Contents of Standard Repair Process Detail Technical Manual
No. Error symptom Content Page Remarks
1
A. Video error_ No video/Normal audio
Check LCD back light with naked eye A1
2 LED driver B+ 13V measuring method
3 Check White Balance value A4
4 Power Board voltage measuring method A5
6
A. Video error_ No video/Video lag/stop
TUNER input signal strength checking method A6
7 TV Version checking method A7
9
A. Video error_Color error
TV connection diagram A8
10 Tuner Checking Part A9
11 Check Link Cable (LVDS) reconnection condition
12 Adjustment Test pattern - ADJ Key A12
13
A. Video error_Vertical/Horizontal bar,
residual image, light spot
TV connection diagram A8
14 Check Link Cable (LVDS) reconnection condition
15 Adjustment Test pattern - ADJ Key A12
16
<Appendix>
Defected Type caused by T-Con/ Inverter/
Module
Exchange T-Con Board (1) A-1/5
17 Exchange T-Con Board (2) A-2/5
18 Exchange LED driver Board (PSU) A-3/5
19 Exchange Module itself (1) A-4/5
20 Exchange Module itself (2) A-5/5
Continue to the next page
Normal
audio
Y
N
Move to No
video/No audio
No video
Normal audio
Check Back Light
On with naked eye
On
Y
N
Check Power Board
13V etc.
Normal
voltage
Y
N
Replace T-con Board
or module
And Adjust VCOM
Repair Power Board
or parts
Check Power Board 13v output
Normal
voltage
Y
Replace Inverter
or module
N
Repair Power
Board or parts
End
Always check & record S/W Version and White
Balance value before replacing the Main Board
Replace Main Board
Re-enter White Balance value
※Precaution
Established
date
Standard Repair Process
Revised date
1/13
Error symptom
A. Video error
No video/ Normal audio
☞A4 ☞A1
☞A28
☞A7
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable,,,)
Normal
voltage?
Check voltages of Power
Board (13V)
No Video/
No audio
Check and
replace
MAIN B/D
Y
Replace Power
Board and repair
parts
N
End
Standard Repair Process
A. Video error
No video/ No audio
☞A4
Established
date
Revised date
2/13
Error symptom
A. Picture Problem
Picture broken/ Freezing
Y
N
☞ A6
N
Check RF Signal level
Normal
Signal?
Check RF Cable
Connection
1. Reconnection
2. Install Booster
Check
S/W Version
Booster menu
On→Off: Check
Off→On: Check
S/W Upgrade
Check whether other equipments have problem or not.
(By connecting RF Cable at other equipment)
→ DVD Player ,Set-Top-Box, Different maker TV etc`
SVC
Bulletin?
Replace
Main B/D
Check
Tuner soldering
Normal
Picture?
Y
N
Y
Close
Normal
Picture?
Y
Close
■ Menu→Setup →Booster
. By using Digital signal level meter
. By using Diagnostics menu on OSD
( Menu→ Set up→ Support → Signal Test )
- Signal strength (Normal : over 50%)
- Signal Quality (Normal: over 50%)
Normal
Picture?
Y
Contact with signal distributor
or broadcaster (Cable or Air)
N
N
Normal
Picture?
Y
Close
N
☞ A7
Standard Repair Process
Established
date
Revised date
3/13
Error symptom
A. Picture Problem (DVB-S/S2)
Tuning fail, Picture broken/ Freezing
Y
N
☞ A6
Check RF Signal level
Normal
Signal?
Check
S/W Version
S/W Upgrade
SVC
Bulletin?
Normal
Picture?
Y
N
Y
Close
Check RF signal cable (DVB satellite signal or not)
Check whether other equipments have problem or not.
(By connecting RF Cable at other equipment)
→ Set-Top-Box, Different maker TV etc
Y
Change satellite setting
(match with installed ANT)
N
Normal
Picture?
Y
Close
N
☞ A7
Standard Repair Process
Established
date
Revised date
3/13
Check satellite setting.
- Check LNB frequency.
- Check satellite
- Check Satellite connection
(DiSEqC, motor, etc…)
Normal
setting?
Contact with signal
distributor
or broadcaster
(Cable or Air)
Close
N
Check
Tuner soldering
Replace
Main B/D
Error symptom
Color
error?
Y
N
※ Check and
replace Link
Cable
(LVDS) and
contact
condition
Y
N
Replace Main B/D
Color
error?
Check error color
input mode
Check color by input
-External Input
-COMPONENT
-RGB
-HDMI/DVI
Y
External device
/Cable
normal
External Input/
Component
error
Check
external
device and
cable
Y
External device
/Cable
normal
RGB/
HDMI/DVI
error
Check external
device and
cable
Replace Main B/D
Replace Main B/D
N
N
A. Video error
Color error
☞A8
N
Y
End
Replace module
Request repair
for external
device/cable
Color
error?
Check Test pattern
☞A12
Standard Repair Process
Established
date
Revised date
4/13
Error symptom
Screen
normal?
N
Y
Check external
device
connection
condition
Y
N
Check and
replace Link
Cable
Normal?
Y
N
Screen
normal?
Replace Main B/D
(adjust VCOM)
Replace
module
Check color condition by input
-External Input
-Component
-RGB
-HDMI/DVI
End
Vertical/Horizontal bar, residual image, light spot
Request repair
for external
device
A. Video error
Vertical / Horizontal bar, residual image,
light spot, external device color error
☞A12
External device screen error-Color error
External
Input
error
Connect other external
device and cable
(Check normal operation of
External Input, Component,
RGB and HDMI/DVI by
connecting Jig, pattern
Generator ,Set-top Box etc.
N
Y
Replace
Main B/D
Screen
normal?
Check screen
condition by input
-External Input
-Component
-RGB
-HDMI/DVI
Request repair for
external device
Component
error
RGB
error
HDMI/
DVI
Connect other external
device and cable
(Check normal operation of
External Input, Component,
RGB and HDMI/DVI by
connecting Jig, pattern
Generator ,Set-top Box etc.
Replace
Main B/D
Screen
normal?
N
Y
Check S/W Version
Y
N
Check
version
S/W Upgrade
Y
N
Normal
screen?
End
Y
N
Replace Main B/D
For LGD panel
Replace
Module
Screen
normal?
End
Established
date
Revised date
5/13
Standard Repair Process
☞A8
Check Test pattern
☞ A28
For other panel
Error symptom
B. Power error
No power
Power LED
On?
Y
N
DC Power on
by pressing Power Key
On Remote control
Y
N
Normal
operation?
Check Power
On ‘”High”
Check Power cord
was inserted properly
Check
Power LED
Replace
Power
B/D
Measure voltage of each output of Power B/D
N
Y
Normal
voltage?
Replace Main B/D
Y
OK?
Replace Main B/D
N
Y
Normal?
Check ST-BY 9.7V
Replace Power B/D
N
Y
Normal
voltage?
Replace Power
B/D
Y
☞A17
☞A18
☞A4
Standard Repair Process
Established
date
Revised date
6/13
. Stand-By: On
. Operating: Off
※
Close
Error symptom
B. Power error
Off when on, off while viewing, power auto on/off
Error?
N
Y
Check Power Off
Mode
Fix A/C cord & Outlet
and check each 3
phase out
Check A/C cord
Check for all 3- phase
power out
Check outlet
Replace Main B/D
CPU
Abnormal
(If Power Off mode is
not displayed)
Check Power B/D
voltage
Y
N
Replace Main B/D
Normal
voltage?
Replace Power B/D
Replace Power B/D
N
Y
Normal?
End
※ Caution
Check and fix exterior
of Power B/D Part
☞A22
Established
date
Revised date
7/13
Standard Repair Process
Status Power off List Explanation
Normal
"POWEROFF_REMOTEKEY" Power off by REMOTE CONTROL
"POWEROFF_OFFTIMER" Power off by OFF TIMER
"POWEROFF_SLEEPTIMER" Power off by SLEEP TIMER
"POWEROFF_INSTOP" Power off by INSTOP KEY
"POWEROFF_AUTOOFF" Power off by AUTO OFF
"POWEROFF_ONTIMER" Power off by ON TIMER
"POWEROFF_RS232C" Power off by RS232C
"POWEROFF_RESREC" Power off by Reservated Record
"POWEROFF_RECEND" Power off by End of Recording
"POWEROFF_SWDOWN" Power off by S/W Download
"POWEROFF_UNKNOWN" Power off by unknown status except listed case
Abnormal
"POWEROFF_ABNORMAL1" Power off by abnormal status except CPU trouble
"POWEROFF_CPUABNORMAL" Power off by CPU Abnormal
* Please refer to the all cases which
can be displayed on power off mode.
Abnormal
1
Error symptom
No audio
Screen normal
Check user
menu >
Speaker off
Off
N
Y
Cancel OFF
Check audio B+ 13V
of Power Board
Normal
voltage
Y
N
Replace Power Board and repair parts
Check Speaker
disconnection
N
Y
Replace Speaker
Replace MAIN Board
End
C. Audio error
No audio/ Normal video
☞A24 ☞A25
Disconnection
Established
date
Revised date
8/13
Standard Repair Process
Error symptom
→ abnormal audio/discontinuation/noise is same after “Check input signal” compared to No audio
C. Audio error
Wrecked audio/ discontinuation/noise
Wrecked audio/
Discontinuation/
Noise for
all audio
Check and replace
speaker and
connector
Wrecked audio/
Discontinuation/
Noise only
for D-TV
Wrecked audio/
Discontinuation/
Noise only
for Analog
Wrecked audio/
Discontinuation/
Noise only
for External Input
Connect and check
other external device
N
Y
Normal
audio?
Check and fix external device
Replace Power B/D
N
Y
Normal
voltage?
Check input
signal
-RF
-External Input
signal
Signal
normal?
(When RF signal is not
received)
Request repair to external
cable/ANT provider
Y
Check audio
B+ Voltage (13V)
Replace Main B/D
(In case of External
Input signal error)
Check and fix
external device
Replace Main B/D
N
End
Established
date
Revised date
9/13
Standard Repair Process
☞A25
Error symptom
D. General Function Problem
Remote control & Local switch checking
Y
N
1. Remote control(R/C) operating error
Check R/C itself
Operation
Normal
operating?
Normal
operating?
Y
Close
Replace R/C
If R/C operate,
Explain the customer
cause is interference
from light in room.
Check R/C Operating
When turn off light
in room
Check & Replace
Baterry of R/C
Check & Repair
Cable connection
Connector solder
Normal
operating?
Check B+ 13V
On Main B/D
☞A27
Normal
Voltage?
Close
N
N
Check 13v(operating) or 9.7(st-by) on Power B/D
Replace Power B/D or
Replace Main B/D
(Power B/D don’t have problem)
☞A4
Check IR
Output signal
Normal
Signal?
N
Y
Repair/Replace
IR B/D
N
☞A27
Replace
Main B/D
Y
☞A27
Standard Repair Process
Established
date
Revised date
10/13
Error symptom
Check technical
information
- Fix information
- S/W Version
N
Y
Technical
information?
Check
input
signal
Signal
input?
Y
N
External Input and
Component
Recognition error
Check and fix
external device/cable
RGB,HDMI/
DVI, Optical
Recognition error
Replace Main B/D
Replace Main B/D
Fix in
accordance
with technical
information
D. Function error
External device recognition error
Established
date
Revised date
11/13
Standard Repair Process
Error symptom
Check location
of noise
Identify
nose type
Circuit
noise
Replace PSU(with LED driver)
Replace LED driver
Mechanical
noise
Check location of
noise
OR
※ When the nose is severe, replace the module
(For models with fix information, upgrade the S/W or
provide the description)
OR
※ If there is a “Tak Tak” noise from the cabinet,
refer to the KMS fix information and then proceed
as shown in the solution manual
(For models without any fix information, provide
the description)
OR
※ Mechanical noise is a natural
phenomenon, and apply the 1st level
description. When the customer does not
agree, apply the process by stage.
※ Describe the basis of the description in
“Part related to nose” in the Owner’s Manual.
E. Noise
Circuit noise, mechanical noise
Established
date
Revised date
12/13
Standard Repair Process
Error symptom
Replace module
Zoom part with
exterior damage
Module
damage
Cabinet
damage
Replace cabinet
Replace remote controller
Remote
controller
damage
Stand
dent
Replace stand
F. Exterior defect
Exterior defect
Adjust VCOM
Established
date
Revised date
13/13
Standard Repair Process
☞A28
Error symptom
Contents of Standard Repair Process Detail Technical Manual
No. Error symptom Content Page Remarks
21
B. Power error_No power
Check front display LED A17
22 Check power input Voltage & ST-BY 9.7V A18
23 Checking method when power is ON A18
24 POWER BOARD voltage measuring method A5
25
26
B. Power error_Off when on, off while
viewing
POWER OFF MODE checking method A22
27
B. Power error_Off when on, off while
viewing
POWER BOARD PIN voltage checking method A18
28
C. Audio error_No audio/Normal video
Checking method in menu when there is no
audio
A24
29
Voltage and speaker checking method when
there is no audio
A25
30
C. Audio error_Wrecked
audio/discontinuation
Voltage and speaker checking method in case of
audio error
A25
31
D. Function error_ No response in remote
controller, key error
Remote controller operation checking method A27
32 D. VCOM Adjustment Sequence of the Vcom adjustment A28
Continued from previous page
Standard Repair Process Detail Technical Manual
Check White Balance value
A. Video error_No video/Normal audio
<ALL MODELS>
A4
Established
date
Revised
date
Error symptom
Content
Entry method
1. Press the ADJ button on the remote controller for adjustment.
2. Enter into White Balance of item 9.
3. After recording the R, G, B (GAIN, Cut) value of Color Temp (Cool/Medium/Warm), re-
enter the value after replacing the MAIN BOARD.
Standard Repair Process Detail Technical Manual
Power Board voltage measuring method
A. Video error_No video/ Audio
A5
Established
date
Revised
date
2015, 12Pin map
2015, 18Pin map (local dimming Model)
1
2
PDIM#2
3
4
D13.2V
5
6
D13.2V
7
8
A13.2V
9
10
GND
11
12
PDIM #1
1
PWR ON/OFF
2
3
GND
4
5
D13.2V
6
7
A13.2V
8
9
GND
10
11
DRV ON/OFF
12
13
GND
14
15
GND
16
17
SPI-SIN
18
Error symptom
Content
MENU Channel Manual select channel
When the signal is strong, use the
attenuator (-10dB, -15dB, -20dB etc.)
Standard Repair Process Detail Technical Manual
TUNER input signal strength checking method
A. Video error_Video error, video lag/stop
<ALL MODELS>
A6
Established
date
Revised
date
Error symptom
Content
Standard Repair Process Detail Technical Manual
Version checking method
A. Video error_Video error, video lag/stop
1. Checking method for remote controller for adjustment
Press the IN-START with the remote
controller for adjustment
Version
<ALL MODELS>
A7
Established
date
Revised
date
Error symptom
Content
Standard Repair Process Detail Technical Manual
connection diagram (1)
A. Video error _Vertical/Horizontal bar, residual
image, light spot
As the part connecting to the external input, check the
screen condition by signal
A8
Established
date
Revised
date
<ALL MODELS>
Error symptom
Content
Checking method:
1. Check the signal strength or check whether the screen is normal when the external device is connected.
2. After measuring each voltage from power supply, finally replace the MAIN BOARD.
Standard Repair Process Detail Technical Manual
TUNER checking part
A. Video error_Video error, video lag/stop
<ALL MODELS>
A9
Established
date
Revised
date
Error symptom
Content
Standard Repair Process Detail Technical Manual
Adjustment Test pattern - ADJ Key
A. Video error_Color error
You can view 6 types of patterns using the ADJ Key
Checking item : 1. Defective pixel 2. Residual image 3. MODULE error (ADD-BAR,SCAN BAR..)
4.Video error (Classification of MODULE or Main-B/D!)
A12
Established
date
Revised
date
Error symptom
Content
Solder defect, CNT Broken
T-Con Defect, CNT Broken
T-Con Defect, CNT Broken
T-Con Defect, CNT Broken
Solder defect, CNT Broken
Solder defect, CNT Broken
Solder defect, CNT Broken
Solder defect, CNT Broken
Abnormal Power Section
Solder defect, Short/Crack
Abnormal Power Section Solder defect, Short/Crack
Appendix : Exchange T-Con Board (1)
A-1/5
Abnormal Power Section
Solder defect, Short/Crack
Abnormal Power Section
Solder defect, Short/Crack
Fuse Open, Abnormal power section
Noise
GRADATION
GRADATION
Abnormal Display
Appendix : Exchange T-Con Board (2)
A-2/5
Appendix : Exchange PSU(LED driver)
No Light
Dim Light
Dim Light
Dim Light
No picture/Sound Ok
A-3/5
Appendix : Exchange the Module (1)
Panel Mura, Light leakage
Press damage
Crosstalk
Crosstalk
Press damage
Panel Mura, Light leakage
Press damage
Un-repairable Cases
In this case please exchange the module.
A-4/5
Vertical Block
Source TAB IC Defect
Horizontal Block
Gate TAB IC Defect
Gate TAB IC Defect
Gate TAB IC Defect
Vertical Line
Source TAB IC Defect
Vertical Block
Source TAB IC Defect
Horizontal Block
Gate TAB IC Defect
Horizontal line
Gate TAB IC Defect
Gate TAB IC Defect
Horizontal Block
Gate TAB IC Defect
Appendix : Exchange the Module (2)
Un-repairable Cases
In this case please exchange the module.
A-5/5
Standard Repair Process Detail Technical Manual
Check front display LED
B. Power error _No power
A17
Established
date
Revised
date
ST-BY condition: On
Power ON condition: Off
Error symptom
Content
Standard Repair Process Detail Technical Manual
Check power input voltage and ST-BY 9.7V
B. Power error _No power
A18
Established
date
Revised
date
When st-by, only 9.7V is normally on.
Checking method when power is ON
2015, 12Pin map
2015, 18Pin map (local dimming Model)
1
2
PDIM#2
3
4
D13.2V
5
6
D13.2V
7
8
A13.2V
9
10
GND
11
12
PDIM #1
1
PWR ON/OFF
2
3
GND
4
5
D13.2V
6
7
A13.2V
8
9
GND
10
11
DRV ON/OFF
12
13
GND
14
15
GND
16
17
SPI-SIN
18
Error symptom
Content
Entry method
1. Press the IN-START button of the remote controller
for adjustment
2. Check the entry into adjustment item 3
Standard Repair Process Detail Technical Manual
POWER OFF MODE checking method
B. Power error _Off when on, off whiling viewing
<ALL MODELS>
A22
Established
date
Revised
date
Error symptom
Content
Checking method
1. Press the MENU button on the remote controller
2. Select the AUDIO function of the Menu
3. Select TV Speaker Or Other
Standard Repair Process Detail Technical Manual
Checking method in menu when there is no audio
C. Audio error_No audio/Normal video
<ALL MODELS>
A24
Established
date
Revised
date
Error symptom
Content
1
PWR ON/OFF
2
3
GND
4
5
D13.2V
6
7
A13.2V
8
9
GND
10
11
DRV ON/OFF
12
13
GND
14
15
GND
16
17
SPI-SIN
18
Checking order when there is no audio
① Check the contact condition of or 13V connector of Main Board
② Measure the 13 input voltage supplied from Power Board
(If there is no input voltage, remove and check the connector)
③ Connect the tester RX1 to the speaker terminal and if you hear the “Chik Chik” sound when you touch the GND
and output terminal, the speaker is normal.
Standard Repair Process Detail Technical Manual
Voltage and speaker checking method
when there is no audio
C. Audio error_No audio/Normal video
<ALL MODELS>
A25
Established
date
Revised
date
①
③
②
Error symptom
Content
Checking order
1, 2. Check IR cable condition between IR & Main board.
3. Check the st-by 3.5V on the terminal 16.
4. When checking the Pre-Amp when the power is in ON condition, it is normal when the Analog
Tester needle moves slowly, and defective when it does not move at all.
Standard Repair Process Detail Technical Manual
Remote controller operation checking method
D. Function error_ No response in remote controller,
key error
<ALL MODELS>
A27
Established
date
Revised
date
P4000
1
GND
2
3.5V_WOL
3
BT_RESET
4
USB_DM
5
NC
6
USB_DP
7 WOL
8 GND
9 EYE_SDA
10 GND
11 EYE_SCL
12 KEY1
13 GND
14 KEY2
15 IR
16 3.5V_ST
17 LED_R
18 GND
①
②
③
④
Error symptom
Content