LG 22LU7000 User manual

North/Latin America
Europe/Africa
Asia/Oceania
Internal Use Only
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LCD TV
SERVICE MANUAL
CHASSIS : LU7000
MODEL : 22LU7000 22LU7000-ZA
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Printed in Korea

Copyright © 2009 LG Electronics. Inc. All right reserved. -2- LGE Internal Use Only
Only for training and service purposes
CONTENTS
CONTENTS .......................................................................................2
SAFETY PRECAUTIONS........................................................................3
SPECIFICATION ......................................................................................6
ADJUSTMENT INSTRUCTION .............................................................12
TROUBLE SHOOTING ..........................................................................18
BLOCK DIAGRAM.................................................................................30
WIRING DIAGRAM.................................................................................31
EXPLODED VIEW .................................................................................34
SCHEMATIC DIAGRAMME.................................................................. 38

Copyright © 2009 LG Electronics. Inc. All right reserved. -3- LGE Internal Use Only
Only for training and service purposes
SAFETY PRECAUTIONS
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 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 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 1MΩand 5.2MΩ.
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 1.5K/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
IMPORTANT SAFETY NOTICE

Copyright © 2009 LG Electronics. Inc. All right reserved. -4- LGE Internal Use Only
Only for training and service purposes
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 conflict between the
following servicing precautions and any of the safety precautions
on page 4 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 an
explosion 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 to
prevent potential shock reasons prior to applying power to the
unit under test.
2. After removing an electrical assembly equipped with ES
devices, place the assembly on a conductive surface such as
aluminum foil, to prevent electrostatic charge buildup or
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 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
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 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 1.25cm) 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.
(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 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

Copyright © 2009 LG Electronics. Inc. All right reserved. -5- LGE Internal Use Only
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 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 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 Repai
r
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 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
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.

Copyright © 2009 LG Electronics. Inc. All right reserved. -6- LGE Internal Use Only
Only for training and service purposes
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement.
1. Application Range. 3. Test method
This specification sheet is applied to the 19”/22”” LCD TV with
LU7000 chassis. 3.1 Performance : LGE TV test method followed.
3.2 Demanded other specification
2. Specification Safety : CE, IEC specification
Each part is tested as below without special appointment EMC : CE, IEC
2.1 Temperature : 25±5°C(77±9°F), CST : 40±5°C
2.2 Relative Humidity : 65±10%
2.3 Power Voltage : Standard input voltage
(220~240V@ 50/60Hz)
• Standard Voltage of each products is marked by models
2.4 Specification and performance of each parts are followed
each drawing and specification by part number in
accordance with BOM .
2.5 The receiver must be operated for about 5 minutes prior to
the adjustment.
4. General Specification
No Item Specification Remark
1 Display Screen Device 19”/22”" wide Color Display Module
2 Aspect Ratio 16:9 MAKER : 19” – LGD
22” – LGD
3 Operating Environment Temp. : 0 ~ 50 deg
Humidity :10 ~ 90% LGE SPEC.
4 Storage Environment Temp. : -20 ~ 50 deg
Humidity : 10 ~ 90 %
5 Input Voltage AC220 ~ 240V, 50/60Hz
6 Power Consumption
Power ON
19” 38W
22” 48W
7 Module Size 19” 430.4(H) x 254.6(V) x 13.0(D)
22” 501.0(H) x 297.0(V) x 17.3(D)
8 Pixel Pitch
19” 0.1(H) x 0.3(V)
22” 0.1165(H) x 0.3495(V)
9 Back Light
19” CCFL
22” CCFL
10 Display Colors 8-bit, 16.7M Color
11 Coating 3H, AG

Copyright © 2009 LG Electronics. Inc. All right reserved. -7- LGE Internal Use Only
Only for training and service purposes
5. MODEL General Specification
No Item Specification Remark
1 Broadcasting system
1) PAL/SECAM BG ( EU Only )
2) PAL/SECAM DK ( EU Only )
3) SECAM L/L’ ( EU Only )
4) PAL I
5) DVB T
2 Receiving system Analog : Upper Heterodyne
Digital : DVB-T(COFDM)
3 SCART Jack (2EA) PAL, SECAM
SCART1 Jack is Full SACRT and support
RF-OUT(TV-OUT)
SCART2 jack is Half SCART and support
MNT-OUT
4 Video Input RCA(1EA) PAL, SECAM, NTSC Rear
5 Component Input (1EA) Y/Cb/Cr
Y/Pb/Pr
6 RGB Input RGB-PC Analog(D-SUB 15PIN)
7 HDMI Input (2EA)
HDMI1-DTV/DVI
HDMI2-DTV
PC(HDMI version 1.3)
Support HDCP
8 Audio Input (3EA) RGB/DVI Audio, Component, AV L/R Input
9 SDPIF out (1EA) In digital mode only
10 Headphone out(1EA) Side
11 USB(1EA) JPEG, MP3, Side
12 PCMCIA(1EA) CI(CAM Interface) Side

Copyright © 2009 LG Electronics. Inc. All right reserved. -8- LGE Internal Use Only
Only for training and service purposes
6. Chroma & Brightness
6.1 19"LCD Module
No Item Min Typ Max Unit Remark
1 Luminance, white
Luminance
(white) 250 300 - cd/m²
PSM : Vivid, CSM : Cool,
White(100 IRE)
Variation 75 %
2 View angle (R/L, U/D) 140/130 170/160 - degree
3 Contrast ratio 600 1000 -
4 Color Coordinate
White
X
Typ.
-0.03
0.313
Typ.
+0.03
PSM : Vivid, CSM : Cool,
White(80 IRE)
Y 0.329
Red
X 0.642
Y 0.334
Green
X 0.304
Y 0.608
Blue
X 0.146
Y 0.073
1) Standard Test Condition (The unit has been ‘ON’)
2) Stable for approximately 30 minutes in a dark environment at 25
3) The values specified are at approximate distance 50Cm from the LCD surface
4) Ta= 25°C, VLCD=5.0V, fV=60Hz, fclk=77.0MHz,IBL=7.5mA
6.2 22"LCD Module
No Item Min Typ Max Unit Remark
1 Luminance, white
Luminance
(white) 280 350 - cd/m²
PSM : Vivid, CSM : Cool,
White(100 IRE)
Variation 1.3
2 View angle (R/L, U/D) 170/155 - degree
3 Contrast ratio 700 1000 -
4 Color Coordinate
White
X
Typ.
-0.03
0.285
Typ.
+0.03
PSM : Vivid, CSM : Cool,
White(80 IRE)
Y 0.293
Red
X 0.642
Y 0.333
Green
X 0.295
Y 0.608
Blue
X 0.147
Y 0.063
1) Standard Test Condition (The unit has been ‘ON’)
2) Stable for approximately 30 minutes in a dark environment at 25±2_
3) The values specified are at approximate distance 50Cm from the LCD surface
4) Ta= 25±2°C, VLCD=5.0V, fV=60Hz, Dclk=72.4MHz

Copyright © 2009 LG Electronics. Inc. All right reserved. -9- LGE Internal Use Only
Only for training and service purposes
7. SET Optical Feature
No Item Module
Luminance (cd/m2) C/R(min)
Remark
AV, COMPONENT, HDMI AV, COMPONENT, HDMI
1 19 inch LPL 220 1000
2 22 inch LPL 290 1000
Measurement conditions( Full White Pattern)
-. Set to Picture Reset.
-. Set to “VIVID” for picture mode
-. Set to “OFF” for energy saving mode
-. Set to “Medium” for colour temperature
-. Measure the black luminance after 30 seconds.
8. Component Video Input (Y, PB, PR)
No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed Remark
1 720*480 15.73 59.94 13.500 SDTV, DVD 480I(525I)
2 720*480 15.75 60.00 13.514 SDTV, DVD 480I(525I)
3 720*576 15.625 50.00 13.500 SDTV, DVD 576I(625I)
50Hz
4 720*480 31.47 59.94 27.000 SDTV 480P
5 720*480 31.50 60.00 27.027 SDTV 480P
6 720*576 31.25 50.00 27.000 SDTV 576P 50Hz
7 1280*720 44.96 59.94 74.176 HDTV 720P
8 1280*720 45.00 60.00 74.250 HDTV 720P
9 1280*720 37.50 50.00 74.25 HDTV 720P 50Hz
10 1920*1080 33.72 59.94 74.176 HDTV 1080I
11 1920*1080 33.75 60.00 74.250 HDTV 1080I
12 1920*1080 28.125 50.00 74.250 HDTV 1080I 50Hz,
13 1920×1080 56.25 50 148.50 HDTV 1080P
14 1920×1080 67.5 60 148.50 HDTV 1080P
15 1920*1080 67.433 59.94 148.352 HDTV 1080p 60Hz

Copyright © 2009 LG Electronics. Inc. All right reserved. -10- LGE Internal Use Only
Only for training and service purposes
9. RGB PC
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Remark
1. 720*400 31.468 70.08 28.32
2. 640*480 31.469 59.94 25.17 VESA
3. 800*600 37.879 60.31 40.00 VESA
4. 1024*768 48.363 60.00 65.00 VESA(XGA)
5. 1280*768 47.78 59.87 80.125 VESA(WXGA)
6 1360*768 47.72 59.80 84.625 VESA(WXGA)
10. HDMI Input (DTV)
No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed Remark
1 640*480 31.649 59.94 25.175 SDTV 480p 60Hz
2 640*480 31.469 60 25.20 SDTV 480p 60Hz
3 720*480 31.47 59.94 27.00 SDTV 480p 60Hz
4 720*480 31.50 60 27.027 SDTV 480p 60Hz
5 720*576 31.25 50.00 27.00 SDTV 576p 50Hz
6 1280*720 37.50 50.00 74.176 HDTV 720p 50Hz
7 1280*720 44.96 59.94 74.176 HDTV 720p 60Hz
8 1280*720 45.00 60 74.250 HDTV 720p 60Hz
9 1920*1080 28.125 50.00 74.250 HDTV 1080i 50Hz
10 1920*1080 33.72 59.94 74.176 HDTV 1080i 60Hz
11 1920*1080 33.75 60 74.250 HDTV 1080i 60Hz
12 1920*1080 27.00 24.00 74.25 HDTV 1080p 24Hz
13 1920*1080 33.750 30 74.25 HDTV 1080p 30Hz
14 1920*1080 56.25 50.00 148.50 HDTV 1080p 50Hz
15 1920*1080 67.433 59.94 148.352 HDTV 1080p 60Hz
16 1920*1080 67.50 60 148.50 HDTV 1080p 60Hz

Copyright © 2009 LG Electronics. Inc. All right reserved. -11- LGE Internal Use Only
Only for training and service purposes
11. HDMI Input (PC Mode)
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark
1. 720*400 31.468 70.08 28.32 HDCP
2. 640*480 31.469 59.94 25.17 VESA HDCP
3. 800*600 37.879 60.31 40.00 VESA HDCP
4. 1024*768 48.363 60.00 65.00 VESA(XGA) HDCP
5. 1280*768 47.78 59.87 80.125 VESA(WXGA) HDCP
6 1360*768 47.72 59.80 84.625 VESA(WXGA) HDCP
12. Mechanical specification
12-1. 19LU7000-ZA
12-2. 22LU7000-ZA
No. Item Content Unit Remark
1. Product
Dimension
Width (W) Length (D) Height (H) mm
Before Packing 467.5 194 410.2 mm
With Stand
After Packing 522 218 461
mm Box Out Size
2. Product
Weight
Only SET 5.1 Kg With Stand
With BOX 7 Kg
No. Item Content Unit Remark
1. Product
Dimension
Width (W) Length (D) Height (H) mm
Before Packing 536.5 194 449.7
mm With Stand
After Packing 600 223 500 mm Box Out Size
2. Product
Weight
Only SET 6.2 Kg With Stand
With BOX 8.3 Kg

Copyright © 2009 LG Electronics. Inc. All right reserved. -12- LGE Internal Use Only
Only for training and service purposes
ADJUSTMENT INSTRUCTION
1. Application Object
These instructions are applied to all of the LCD TV, LU7000 chassis.
2. USB S/W DOWNLOAD
To update the TV software, use only the “USB IN ” jack on the side of the TV.
(The USB IN jack on the side of the TV works for the music or photo service.)
2-1)sub Micom & TV Software Download
a) Put the “hmx_lu7000_GB.hdf(UK_Model)//hmx_lu7000_EU.hdf(EU_Model)” in the USB.
b) Connect the USB device to the “USB IN” jack on the side of the TV
19/22LU7000-ZA
c) AC Power Off and On the TV.
d) Waiting until the new software upgrade is finished.
e) Finishing the version uploading, you have to put USB stick and “AC Power” off.
f) After putting “AC Power” on and check updated version on your TV.
zIf 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.

Copyright © 2009 LG Electronics. Inc. All right reserved. -13- LGE Internal Use Only
Only for training and service purposes
Firmware Upgrade Mode
Current Version: MP09060601
New Version : MP09070101
Press PLAY Key to upgrade.
Firmware Upgrade Mode
Current Version: MP09060601
New Version : MP09070101
Upgrading 0[%] completed
*** CAUTION!!! ***
Do not turn off the player.
Firmware Upgrade Mode
Current Version: MP09060601
New Version : MP09070101
Upgrading 100[%] completed
*** CAUTION!!! ***
Do not turn off the player.
3. DVD S/W DOWNLOAD
To update the DVD software, use only the DVD Player.
a) Open the Door, press “Eject” keys on a remote
b) Insert the S/W update Disc
c) Close the Door, press “Eject” keys on a remote
d) Check the follow message
e) Press “Play” keys on a remote
f) Waiting until the new S/W upgrade is finished
g) Automatically open the Door
h) Finishing the vesion uploading, you have to remove Disc and “AC Power”off
i) After putting “AC Power on and check updated vesion by going to the Factory Mode
j) Press “MENU”, “1”, “2”, “4”, “7” and “5” keys on a remote
k) Check the information for S/W version as above

Copyright © 2009 LG Electronics. Inc. All right reserved. -14- LGE Internal Use Only
Only for training and service purposes
4. OTA DOWNLOAD
3-1)Software OTA Download.
Auto update case.
a) Click the Software Update.
b) Click the Auto Update.
c) If found, the OTA detection message is shown.
c-1) Select “Yes”.
c-2) The TV is reboot and OTA process starts.
c-3) Select “No”
c-4) OTA process does not start.
d) The TV is reboot and OTA process starts.
e) If the OTA not detection message is shown
Manual Update Case.
a) Click the Software Update.
b) Click the Manual Update.
c) If found, the OTA detection message is shown.
c-1) Select “Yes”.
c-2) The tv is reboot and OTA process starts.
c-3) Select “No”
c-4) OTA process does not start
d) The TV is reboot and OTA process shows.
e) If the OTA not detection message is shown

Copyright © 2009 LG Electronics. Inc. All right reserved. -15- LGE Internal Use Only
Only for training and service purposes
5. EDID DOWNLOAD
4-1) Panel Setting
a) You should change the panel size by going to the Factory Mode, press “Menu”, “1”, “2”, “4”, 7” and “5” keys on a
remote
b) You have to select 19”,22” panel in Factory mode.
19LU7000-ZA : Panel Select Æ“LG_WXGA_LC190WH1”
22LU7000-ZA : Panel Select Æ“LG_WXGA_LC220WXE”

Copyright © 2009 LG Electronics. Inc. All right reserved. -16- LGE Internal Use Only
Only for training and service purposes
4-2) EDID Setting
a) Connect D-sub signal cable to D-sub jack(PC VGA)
b) Connect HDMI signal cable to HDMI jack(HDMI)
c) Write EDID data to EEPROM(24C08) by using DDC protocol
d) Check whether written EDID data is correct or not
4-3) PC EDID Table
a) LU7000-ZA
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x00 00 FF FF FF FF FF FF 00 1E 6D A B
0x10 C 01 03 08 29 17 78 2A 6F B5 A4 55 4D 9B 25
0x20 12 50 54 A1 08 00 31 40 45 40 61 40 01 01 01 01
0x30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
0x40 36 00 9A E6 10 00 00 1E 0E 1F 00 80 51 00 1E 30
0x50 40 80 37 00 9A E6 10 00 00 1C 00 00 00 FD 00 39
0x60 3F 1C 45 0F 00 0A 20 20 20 20 20 20 00 00 00 FC
0x70 D 00 E
ⓐProduct ID
MODEL NAME PRODUCT ID HEX EDID Table
19LU7000 19379 4B B3 B3 4B
22LU7000 22315 57 2B 2B 57
ⓑSerial No: Controlled on production line.
ⓒWeek, Year: Controlled on production line: ex) Weekly : ‘01’ Α01’ , Year : ‘2009’ Î’13’
ⓓModel Name(Hex):
MODEL NAME MODEL NAME(HEX)
19LU7000 00 31 39 4C 55 37 30 30 30 2D 5A 41 0A 20
22LU7000 00 32 32 4C 55 37 30 30 30 2D 5A 41 0A 20
ⓔChecksum: Changeable by total EDID data.

Copyright © 2009 LG Electronics. Inc. All right reserved. -17- LGE Internal Use Only
Only for training and service purposes
4-4) HDMI EDID Table
a) LU7000-ZA
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x00 00 FF FF FF FF FF FF 00 1E 6D A B
0x10 C 01 03 80 29 17 78 2A 6F B5 A4 55 4D 9B 25
0x20 12 50 54 A1 08 00 31 40 45 40 61 40 01 01 01 01
0x30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
0x40 36 00 9A E6 10 00 00 1E 0E 1F 00 80 51 00 1E 30
0x50 40 80 37 00 9A E6 10 00 00 1C 00 00 00 FD 00 39
0x60 3F 1C 45 0F 00 0A 20 20 20 20 20 20 00 00 00 FC
0x70 D 01 E
0x80 02 03 1F F1 4A 90 1F 20 22 05 14 04 13 12 03 23
0x90 09 57 07 83 01 00 00 67 03 0C 00 F 38 2D 01
0xA0 1D 80 D0 72 1C 16 20 10 2C 25 80 C4 8E 21 00 00
0xB0 9E 01 1D 80 18 71 1C 16 20 58 2C 25 00 C4 8E 21
0xC0 00 00 9E 01 1D 00 BC 52 D0 1E 20 B8 28 55 40 C4
0xD0 8E 21 00 00 1E 01 1D 00 72 51 D0 1E 20 6E 28 55
0xE0 00 C4 8E 21 00 00 1E 00 00 00 00 00 00 00 00 00
0xF0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 G
ⓐProduct ID
MODEL NAME PRODUCT ID HEX EDID Table
19LU7000 19380 4B B4 B4 4B
22LU7000 22316 57 2C 2C 57
ⓑSerial No: Controlled on production line.
ⓒWeek, Year: Controlled on production line: ex) Weekly : ‘01’ Α01’, Year : ‘2009’ Α13’
ⓓModel Name(Hex):
MODEL NAME MODEL NAME(HEX)
19LU7000 00 31 39 4C 55 37 30 30 30 2D 5A 41 0A 20
22LU7000 00 32 32 4C 55 37 30 30 30 2D 5A 41 0A 20
ⓔChecksum: Changeable by PC EDID data.
ⓕPort No. 10 : HDMI1, 20 : HDMI2,
ⓖChecksum: Changeable by total EDID data.

Copyright © 2009 LG Electronics. Inc. All right reserved. -18- LGE Internal Use Only
Only for training and service purposes
TROUBLESHOOTING
1. No power
(1) Symptom
1) Doesn't minute discharge at module.
2) Non does not come in into the front LED.
3) Check Off Mode.
(2) Check follow
Is push the AC
Switch ?
Plug in power cord
Is connect the AC
Switch cable?
Replace AC switch
Is connect the Power
Board and 15p of Main
Board Cable?
Connect Cable
Replace fuse
After remove the cable connect to
Power Board (except the AC
switch cable and Power cord),
authorizes the AC voltage marking
on manual.
When 5V does not operate,
Yes
No
Is plug in power cord?
Yes
No
No
No
Yes
Yes
[AC Switch Value]
¾LU7000 Power B/D : CN1(AC Socket)
CN2
(
AC Switch
)
Connect Cable
Yes
Is normal the
“Fuse” on Power
Board?

Copyright © 2009 LG Electronics. Inc. All right reserved. -19- LGE Internal Use Only
Only for training and service purposes
2. Protect mode
(1) Symptom
1) After once shining, it does not discharge minutely from module.
2) It is converted with the color where the front LED is red from blue.
(2) Check follow
Is normal the Power
Board?
Is normal the each
connector?
Is output the normality
Low/High .voltage?
Is normal the Main
Board?
Yes
Yes
No No
No
No Replace Power Board.
After connecting well
each connector, the
normality it operates?
Replace Power Board.
After remove JP1
normal operation:
Replace
Main
Board
Is normal the output
voltage after remove
JP1 of Main Board?
No No

Copyright © 2009 LG Electronics. Inc. All right reserved. -20- LGE Internal Use Only
Only for training and service purposes
3. No Raster
(1) Symptom
1) No OSD and image occur at screen.
2) It maintains the condition where the front LED is blue
(2) Check follow
Does minute discharge
At Module?
Is the LVDS
cable normal?
Is the U112(FLI10610H)
Output normal?
Yes
Yes
No
No
No Is output the normality
Low/High voltage ?
Reconnect the LVDS cable in JP451
No
Yes Yes
Is the inverter on?
Re
p
lace Main Board.
Re
p
lace Main Board.
Check the LCD
Module
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