Text preview for : LG_LD88D_32lg7000.pdf part of LG 32LG7000 LCD TV
SERVICE MANUAL
CHASSIS : LD88D
MODEL : 32LG7000 32LG7000-ZA
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Internal Use Only
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LCD TV
SERVICE MANUAL
CHASSIS : LD88D
MODEL : 32LG7000 32LG7000-ZA
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CONTENTS
CONTENTS .............................................................................................. 2
PRODUCT SAFETY ..................................................................................3
SPECIFICATION ........................................................................................6
ADJUSTMENT INSTRUCTION ...............................................................10
TROUBLE SHOOTING ...........................................................................14
BLOCK DIAGRAM...................................................................................23
EXPLODED VIEW .................................................................................. 33
SVC. SHEET ...............................................................................................
Copyright © 2008 LG Electronics. Inc. All right reserved. -2- LGE Internal Use Only
Only for training and service purposes
SAFETY PRECAUTIONS
IMPORTANT SAFETY NOTICE
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the
Schematic Diagram and Exploded View.
It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent
Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
General Guidance Leakage Current Hot Check (See below Figure)
Plug the AC cord directly into the AC outlet.
An isolation Transformer should always be used during the
servicing of a receiver whose chassis is not isolated from the AC Do not use a line Isolation Transformer during this check.
power line. Use a transformer of adequate power rating as this Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor
protects the technician from accidents resulting in personal injury between a known good earth ground (Water Pipe, Conduit, etc.)
from electrical shocks. and the exposed metallic parts.
Measure the AC voltage across the resistor using AC voltmeter
It will also protect the receiver and it's components from being with 1000 ohms/volt or more sensitivity.
damaged by accidental shorts of the circuitry that may be Reverse plug the AC cord into the AC outlet and repeat AC voltage
inadvertently introduced during the service operation. measurements for each exposed metallic part. Any voltage
measured must not exceed 0.75 volt RMS which is corresponds to
If any fuse (or Fusible Resistor) in this TV receiver is blown, 0.5mA.
replace it with the specified. In case any measurement is out of the limits specified, there is
possibility of shock hazard and the set must be checked and
When replacing a high wattage resistor (Oxide Metal Film Resistor, repaired before it is returned to the customer.
over 1W), keep the resistor 10mm away from PCB.
Leakage Current Hot Check circuit
Keep wires away from high voltage or high temperature parts.
AC Volt-meter
Before returning the receiver to the customer,
always perform an AC leakage current check on the exposed
metallic parts of the cabinet, such as antennas, terminals, etc., to
be sure the set is safe to operate without damage of electrical Good Earth Ground
shock. such as WATER PIPE,
To Instrument's CONDUIT etc.
0.15uF
Leakage Current Cold Check(Antenna Cold Check) exposed
METALLIC PARTS
With the instrument AC plug removed from AC source, connect an
electrical jumper across the two AC plug prongs. Place the AC
switch in the on position, connect one lead of ohm-meter to the AC 1.5 Kohm/10W
plug prongs tied together and touch other ohm-meter lead in turn to
each exposed metallic parts such as antenna terminals, phone
jacks, etc.
If the exposed metallic part has a return path to the chassis, the
measured resistance should be between 1M and 5.2M.
When the exposed metal has no return path to the chassis the
reading must be infinite.
An other abnormality exists that must be corrected before the
receiver is returned to the customer.
Copyright © 2008 LG Electronics. Inc. All right reserved. -3- LGE Internal Use Only
Only for training and service purposes
SERVICING PRECAUTIONS
CAUTION: Before servicing receivers covered by this service unit under test.
manual and its supplements and addenda, read and follow the 2. After removing an electrical assembly equipped with ES
SAFETY PRECAUTIONS on page 3 of this publication. devices, place the assembly on a conductive surface such as
NOTE: If unforeseen circumstances create conflict between the aluminum foil, to prevent electrostatic charge buildup or
following servicing precautions and any of the safety precautions on exposure of the assembly.
page 3 of this publication, always follow the safety precautions. 3. Use only a grounded-tip soldering iron to solder or unsolder ES
Remember: Safety First. devices.
4. Use only an anti-static type solder removal device. Some solder
General Servicing Precautions removal devices not classified as "anti-static" can generate
1. Always unplug the receiver AC power cord from the AC power electrical charges sufficient to damage ES devices.
source before; 5. Do not use freon-propelled chemicals. These can generate
a. Removing or reinstalling any component, circuit board electrical charges sufficient to damage ES devices.
module or any other receiver assembly. 6. Do not remove a replacement ES device from its protective
b. Disconnecting or reconnecting any receiver electrical plug or package until immediately before you are ready to install it.
other electrical connection. (Most replacement ES devices are packaged with leads
c. Connecting a test substitute in parallel with an electrolytic electrically shorted together by conductive foam, aluminum foil
capacitor in the receiver. or comparable conductive material).
CAUTION: A wrong part substitution or incorrect polarity 7. Immediately before removing the protective material from the
installation of electrolytic capacitors may result in an leads of a replacement ES device, touch the protective material
explosion hazard. to the chassis or circuit assembly into which the device will be
installed.
2. Test high voltage only by measuring it with an appropriate high CAUTION: Be sure no power is applied to the chassis or circuit,
voltage meter or other voltage measuring device (DVM, and observe all other safety precautions.
FETVOM, etc) equipped with a suitable high voltage probe. 8. Minimize bodily motions when handling unpackaged
Do not test high voltage by "drawing an arc". replacement ES devices. (Otherwise harmless motion such as
3. Do not spray chemicals on or near this receiver or any of its the brushing together of your clothes fabric or the lifting of your
assemblies. foot from a carpeted floor can generate static electricity
4. Unless specified otherwise in this service manual, clean sufficient to damage an ES device.)
electrical contacts only by applying the following mixture to the
contacts with a pipe cleaner, cotton-tipped stick or comparable General Soldering Guidelines
non-abrasive applicator; 10% (by volume) Acetone and 90% (by 1. Use a grounded-tip, low-wattage soldering iron and appropriate
volume) isopropyl alcohol (90%-99% strength) tip size and shape that will maintain tip temperature within the
CAUTION: This is a flammable mixture. range or 500°F to 600°F.
Unless specified otherwise in this service manual, lubrication of 2. Use an appropriate gauge of RMA resin-core solder composed
contacts in not required. of 60 parts tin/40 parts lead.
5. Do not defeat any plug/socket B+ voltage interlocks with which 3. Keep the soldering iron tip clean and well tinned.
receivers covered by this service manual might be equipped. 4. Thoroughly clean the surfaces to be soldered. Use a mall wire-
6. Do not apply AC power to this instrument and/or any of its bristle (0.5 inch, or 1.25cm) brush with a metal handle.
electrical assemblies unless all solid-state device heat sinks are Do not use freon-propelled spray-on cleaners.
correctly installed. 5. Use the following unsoldering technique
7. Always connect the test receiver ground lead to the receiver a. Allow the soldering iron tip to reach normal temperature.
chassis ground before connecting the test receiver positive (500°F to 600°F)
lead. b. Heat the component lead until the solder melts.
Always remove the test receiver ground lead last. c. Quickly draw the melted solder with an anti-static, suction-
8. Use with this receiver only the test fixtures specified in this type solder removal device or with solder braid.
service manual. CAUTION: Work quickly to avoid overheating the circuit
CAUTION: Do not connect the test fixture ground strap to any board printed foil.
heat sink in this receiver. 6. Use the following soldering technique.
a. Allow the soldering iron tip to reach a normal temperature
Electrostatically Sensitive (ES) Devices (500°F to 600°F)
Some semiconductor (solid-state) devices can be damaged easily b. First, hold the soldering iron tip and solder the strand against
by static electricity. Such components commonly are called the component lead until the solder melts.
Electrostatically Sensitive (ES) Devices. Examples of typical ES c. Quickly move the soldering iron tip to the junction of the
devices are integrated circuits and some field-effect transistors and component lead and the printed circuit foil, and hold it there
semiconductor "chip" components. The following techniques only until the solder flows onto and around both the
should be used to help reduce the incidence of component component lead and the foil.
damage caused by static by static electricity. CAUTION: Work quickly to avoid overheating the circuit
1. Immediately before handling any semiconductor component or board printed foil.
semiconductor-equipped assembly, drain off any electrostatic d. Closely inspect the solder area and remove any excess or
charge on your body by touching a known earth ground. splashed solder with a small wire-bristle brush.
Alternatively, obtain and wear a commercially available
discharging wrist strap device, which should be removed to
prevent potential shock reasons prior to applying power to the
Copyright © 2008 LG Electronics. Inc. All right reserved. -4- LGE Internal Use Only
Only for training and service purposes
IC Remove/Replacement
Some chassis circuit boards have slotted holes (oblong) through Circuit Board Foil Repair
which the IC leads are inserted and then bent flat against the Excessive heat applied to the copper foil of any printed circuit
circuit foil. When holes are the slotted type, the following technique board will weaken the adhesive that bonds the foil to the circuit
should be used to remove and replace the IC. When working with board causing the foil to separate from or "lift-off" the board. The
boards using the familiar round hole, use the standard technique following guidelines and procedures should be followed whenever
as outlined in paragraphs 5 and 6 above. this condition is encountered.
Removal At IC Connections
1. Desolder and straighten each IC lead in one operation by gently To repair a defective copper pattern at IC connections use the
prying up on the lead with the soldering iron tip as the solder following procedure to install a jumper wire on the copper pattern
melts. side of the circuit board. (Use this technique only on IC
2. Draw away the melted solder with an anti-static suction-type connections).
solder removal device (or with solder braid) before removing the
IC. 1. Carefully remove the damaged copper pattern with a sharp
Replacement knife. (Remove only as much copper as absolutely necessary).
1. Carefully insert the replacement IC in the circuit board. 2. carefully scratch away the solder resist and acrylic coating (if
2. Carefully bend each IC lead against the circuit foil pad and used) from the end of the remaining copper pattern.
solder it. 3. Bend a small "U" in one end of a small gauge jumper wire and
3. Clean the soldered areas with a small wire-bristle brush. carefully crimp it around the IC pin. Solder the IC connection.
(It is not necessary to reapply acrylic coating to the areas). 4. Route the jumper wire along the path of the out-away copper
pattern and let it overlap the previously scraped end of the good
"Small-Signal" Discrete Transistor copper pattern. Solder the overlapped area and clip off any
Removal/Replacement excess jumper wire.
1. Remove the defective transistor by clipping its leads as close as
possible to the component body. At Other Connections
2. Bend into a "U" shape the end of each of three leads remaining Use the following technique to repair the defective copper pattern
on the circuit board. at connections other than IC Pins. This technique involves the
3. Bend into a "U" shape the replacement transistor leads. installation of a jumper wire on the component side of the circuit
4. Connect the replacement transistor leads to the corresponding board.
leads extending from the circuit board and crimp the "U" with
long nose pliers to insure metal to metal contact then solder 1. Remove the defective copper pattern with a sharp knife.
each connection. Remove at least 1/4 inch of copper, to ensure that a hazardous
condition will not exist if the jumper wire opens.
Power Output, Transistor Device 2. Trace along the copper pattern from both sides of the pattern
Removal/Replacement break and locate the nearest component that is directly
1. Heat and remove all solder from around the transistor leads. connected to the affected copper pattern.
2. Remove the heat sink mounting screw (if so equipped). 3. Connect insulated 20-gauge jumper wire from the lead of the
3. Carefully remove the transistor from the heat sink of the circuit nearest component on one side of the pattern break to the lead
board. of the nearest component on the other side.
4. Insert new transistor in the circuit board. Carefully crimp and solder the connections.
5. Solder each transistor lead, and clip off excess lead. CAUTION: Be sure the insulated jumper wire is dressed so the
6. Replace heat sink. it does not touch components or sharp edges.
Diode Removal/Replacement
1. Remove defective diode by clipping its leads as close as
possible to diode body.
2. Bend the two remaining leads perpendicular y to the circuit
board.
3. Observing diode polarity, wrap each lead of the new diode
around the corresponding lead on the circuit board.
4. Securely crimp each connection and solder it.
5. Inspect (on the circuit board copper side) the solder joints of
the two "original" leads. If they are not shiny, reheat them and if
necessary, apply additional solder.
Fuse and Conventional Resistor
Removal/Replacement
1. Clip each fuse or resistor lead at top of the circuit board hollow
stake.
2. Securely crimp the leads of replacement component around
notch at stake top.
3. Solder the connections.
CAUTION: Maintain original spacing between the replaced
component and adjacent components and the circuit board to
prevent excessive component temperatures.
Copyright © 2008 LG Electronics. Inc. All right reserved. -5- LGE Internal Use Only
Only for training and service purposes
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement.
1. Application range 3. Test method
This specification is applied to LD88D chassis. (1) Performance : LGE TV test method followed
(2) Demanded other specification
Safety : CE, IEC Specification
2. Requirement for Test EMC : CE, IEC
Each part is tested as below without special appointment.
(1) Temperature : 25 ± 5°C(77 ± 9°F), CST : 40 ± 5°C
(2) Humidity : 65% ± 10%
(3) Power : Standard input voltage (100-240V~, 50/60Hz)
* Standard Voltage of each products is marked by models.
(4) Specification and performance of each parts are followed
each drawing and specification by part number in
accordance with BOM.
(5) The receiver must be operated for about 20 minutes prior
to the adjustment.
3 General Specification(LCD Module)
No. Item Specification Remark
1 Display Screen Device 31.5 inch Color TFT-LCD Module(AUO) LCD
2 Aspect Ratio 16:9
3 LCD Module Pixel Format: 1920 horiz. By 1080 vert. pixels
RGB stripe arrangement
4 Operating Environment 1) Temp. : 0 ~ 40 deg
2) Humidity : 20 ~ 80% LGE SPEC
5 Storage Environment 3) Temp. : -20 ~ 60 deg
4) Humidity : 10 ~ 90 %
6 Input Voltage AC100-240V~, 50/60Hz Maker LG
Copyright © 2008 LG Electronics. Inc. All right reserved. -6- LGE Internal Use Only
Only for training and service purposes
4. Model Specification
No. Item Specification Remark
1 Market Austria, Belgium, Bulgaria, Croatia, Czech, Denmark, Finland, 25 Country -> 27 country
France, Germany, Greece, Hungary, Italy, Luxembourg, UK
Morocco, Netherlands, Norway, Poland, Portugal, Romania,
Russia, Serbia,Slovenia, Spain, Sweden, Switzerland, Turkey,
2 Broadcasting system 1) PAL/SECAM BG EU (PAL Market)
2) PAL/SECAM DK
3) PAL I/II
4) SECAM L/L'
5) DVB T
3 Receiving system Analog : Upper Heterodyne
Digital : COFDM
4 Scart Jack (2EA) PAL, SECAM Scart 1 Jack is Full scart and support
RF-OUT(Analog)
Scart 2 jack is Half scart and support
MNT-OUT.
5 Video Input (1EA) PAL, SECAM, NTSC Side AV
6 S-Video Input (1EA) PAL, SECAM, NTSC Side AV
7 Component Input (1EA) Y/Cb/Cr, Y/ Pb/Pr
8 RGB Input RGB-PC Analog (D-Sub 15Pin)
9 HDMI Input (4EA) HDMI-PC HDMI1/DVI, HDMI2, HDMI3, HDMI4
HDMI-DTV All HDMI inputs support V1.3 of HDMI
10 Audio Input (3 EA) RGB/DVI Audio, Component, AV L/R Input
11 SPDIF Out(1 EA) SPDIF Out
12 USB For SVC, S/W Download, X-Studio Side(X-Studio Only Series)
13 Bluetooth Bluetooth Phone(JPEG), Headset 32/37/42/47/52LG7000 models
Copyright © 2008 LG Electronics. Inc. All right reserved. -7- LGE Internal Use Only
Only for training and service purposes
5. Component Video Input (Y, PB, PR)
No. Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Proposed
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 HDTV 1080P
14 1920*1080 67.5 60 HDTV 1080P
6. RGB input (Analog PC)
No. Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Proposed 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)
7 1280*1024 63.98 60.02 108. SXGA FULL HD only
8 1400*1050 65.317 59.979 121.75 SXGA FULL HD only
9. 1920*1080 66.587 59.934 138.5 WUXGA
Copyright © 2008 LG Electronics. Inc. All right reserved. -8- LGE Internal Use Only
Only for training and service purposes
7. HDMI DTV
No. Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Proposed
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
8. HDMI PC
No. Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Proposed 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)
7 1280*1024 63.98 60.02 108. SXGA FULL HD only
8 1400*1050 65.317 59.979 121.75 SXGA FULL HD only
9. 1920*1080 66.587 59.934 138.5 WUXGA
Copyright © 2008 LG Electronics. Inc. All right reserved. -9- LGE Internal Use Only
Only for training and service purposes
ADJUSTMENT INSTRUCTION
1. Application Range * EDID data and Model option download (RS232)
This spec. sheet is applied to all of the LD88D chassis NO Item CMD1 CMD2 Data0
manufactured at LG TV Plant all over the world. Enter Download A E 0 0 When transfer the `Mode
download `Mode In' In', Carry the command.
MODE
Edid data and Download A E *Note1 *Note2 Automatically download
2. Specification. Model option (The use of a internal Data)
(1) Because this is not a hot chassis, it is not necessary to use
download
an isolation transformer. However, the use of isolation
transformer will help protect test instrument. Adjust `Mode Out' A E 9 0
(2) Adjustment must be done in the correct order. Adjustment A E 9 9 To check download
(3) The adjustment must be performed in the circumstance of Confirmation on assembly line
25±5°C of temperature and 65±10% of relative humidity if
there is no specific designation.
(4) The input voltage of the receiver must keep 100-240V, ** Note 1 & Note 2
50/60Hz. Model Option Note 1 Note 2
(5) The receiver must be operated for about 15 minutes prior 32LG7000-ZA 5 6
to the adjustment. 37LG7000-ZA 5 7
- After RGB Full White in HEAT-RUN Mode, the receiver 42LG7000-ZA 5 8
must be operated prior to the adjustment.
47LG7000-ZA 5 9
- Enter into HEAT-RUN MODE
52LG7000-ZA 5 A
1) Press the "POWER ON" KEY on Adjustment R/C.
2) Press the "ADJ KEY" on Adjustment R/C.
3) Select "3. Test Pattern" by using D/E(CH +/-) and - Baud rate : 115200 bps
press ENTER(A) - RS232 Host : PC
4) Select "White" by using F / G (VOL +/-) and press - echo : none
ENTER(A)
* Set is activated HEAT run without signal generator in this
mode. 3.1. ADC adjustment
* Single color pattern ( RED / BLUE / GREEN ) of HEAT RF input AV / Component / RGB input
RUN MODE uses to check panel. NO SIGNAL or White noise NO SIGNAL
* Caution : If you turn on a still pattern more than 20
minutes (Especially digital pattern, cross hatch pattern), * Adjustment can be done using only internal ADC, so input
an after image may be occur in the black level part of the signal is not necessary.
screen. * Required equipment : Adjustment R/C.
1) Press ADJ key on adjustment R/C.
2) Select "1. ADC calibration" by using D/E(CH +/-) and press
3. PCB assembly adjustment method ENTER(A)
3) Select "Start" by using F/G(VOL +/-) and press ENTER(A)
Caution: Using `power on' button of the Adjustment R/C , 4) ADC adjustment is executed automatically.
power on TV.
* ADC Calibration Protocol (RS232) 3.2 PCMCIA CARD Checking Method
You must adjust DTV 29 Channel and insert PCMCIA CARD
Item CMD1 CMD2 Data0
to socket.
Enter Adjust `Mode In' A D 0 0 When transfer the `Mode In', 1) If PCMCIA CARD works normally, normal signals display
Adjust Mode Carry the command. on screen. But it works abnormally, "No CA module" words
ADC adjust ADC Adjust A D 1 0 Automatically adjustment display on screen.
(The use of a internal pattern)
Adjust `Mode Out' A D 9 0 * Caution: Set up "RF mode" before launching products.
Adjustment A D 9 9 To check ADC Adjustment
Confirmation on Assembly line.
Copyright © 2008 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only
Only for training and service purposes
4. EDID (The Extended Display Identification DATA) (2) RGB
* When company internal production(total assembly), EDID 0x00 0x01 0x02 0x030x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
data must scan in DDC line. 0x00 00 FF FF FF FF FF FF 00 1E 6D
0x01 01 03 01 46 27 78 EA D9 B0 A3 57 49 9C 25
4.1. EDID Download 0x02 11 49 4B A1 08 00 31 40 45 40 61 40 D1 C0 90 40
Before downloading EDID Data, check the RGB/HDMI cable 0x03 81 80 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20
is disconnected. 0x04 35 00 E8 26 32 00 00 1A 1B 21 50 A0 51 00 1E 30
0x05 48 88 35 00 BC 86 21 00 00 1C 00 00 00 FD 00 39
0x06 4B 1F 54 12 00 0A 20 20 20 20 20 20
1) Press ADJ key on Adjustment R/C.
0x07 00
2) Select "5.EDID D/L" by using D / E (CH +/-) and press
ENTER(A)
3) Select "Start" by using F/G(VOL +/-) and press ENTER(A) Product ID
4) EDID DownLoad is executed if word "NG" is changed to MODEL NAME PRODUCT ID HEX EDID Table
"OK" about all HDMI ports. 32LG7000 30301 765D 5D76
37LG7000 30263 7637 3776
4.2. EDID Data 42LG7000 40359 9DA7 A79D
47LG7000 40361 9DA9 A99D
(1) HDMI1
52LG7000 50201 C419 19C4
0x00 0x01 0x02 0x030x04 0x05 0x06 0x07 0x08 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F
0x00 00 FF FF FF FF FF FF 00 1E 6D
Serial No: Controlled on production line.
0x10 01 03 80 46 27 78 EA D9 B0 A3 57 49 9C 25
Month, Year: Controlled on production line
0x20 11 49 4B A1 08 00 31 40 45 40 61 40 81 80 90 40
: ex) Monthly : `09' -> `09'
0x30 D1 C0 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20
Year: `2006' -> `10'
0x40 35 00 E8 26 32 00 00 1A 1B 21 50 A0 51 00 1E 30
Model Name(Hex):
0x50 48 88 35 00 BC 86 21 00 00 1C 00 00 00 FD 00 39
0x60 4B 1F 54 12 00 0A 20 20 20 20 20 20 MODEL NAME MODEL NAME(HEX)
0x70 01 32LG7000 00 00 FC 00 33 32 4C 47 37 30 30 30 2D 0A 20 20 20 20
0x80 02 03 23 F1 4E 81 02 03 15 12 13 04 14 05 20 21 37LG7000 00 00 FC 00 33 37 4C 47 37 30 30 30 2D 0A 20 20 20 20
0x90 22 1F 10 23 09 57 07 83 01 00 00 67 03 0C 00
42LG7000 00 00 FC 00 34 32 4C 47 37 30 30 30 2D 0A 20 20 20 20
0xA0 00 B8 2D 01 1D 00 80 51 D0 1C 20 40 80 35 00 BC
47LG7000 00 00 FC 00 34 37 4C 47 37 30 30 30 2D 0A 20 20 20 20
0xB0 88 21 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 96
0xC0 00 13 8E 21 00 00 18 02 3A 80 18 71 38 2D 40 58 52LG7000 00 00 00 FC 00 35 32 4C 47 37 30 30 30 0A 20 20 20 20
0xD0 2C 45 00 06 44 21 00 00 1E 01 1D 80 18 71 1C 16
0xE0 20 58 2C 25 00 C4 8E 21 00 00 9E 4E 1F 00 80 51 Checksum: Changeable by total EDID data
0xF0 00 1E 30 40 80 37 00 BC 88 21 00 00 18 00 00
Product ID
MODEL NAME PRODUCT ID HEX EDID Table
32LG7000 30302 765E 5E76
37LG7000 30264 7638 3876
42LG7000 40360 9DA8 A89D
47LG7000 40362 9DAA AA9D
52LG7000 50202 C41A 1AC4
Serial No: Controlled on production line.
Month, Year: Controlled on production line
: ex) Monthly : `09' -> `09'
Year: `2006' -> `10'
Model Name(Hex):
MODEL NAME MODEL NAME(HEX)
32LG7000 00 00 00 FC 00 33 32 4C 47 37 30 30 30 0A 20 20 20 20
37LG7000 00 00 00 FC 00 33 37 4C 47 37 30 30 30 0A 20 20 20 20
42LG7000 00 00 00 FC 00 34 32 4C 47 37 30 30 30 0A 20 20 20 20
47LG7000 00 00 00 FC 00 34 37 4C 47 37 30 30 30 0A 20 20 20 20
52LG7000 00 00 00 FC 00 35 32 4C 47 37 30 30 30 0A 20 20 20 20
Checksum: Changeable by total EDID data.
Port No.
10:HDMI1, 20:HDMI2, 30:HDMI3, 40:HDMI4
Copyright © 2008 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only
Only for training and service purposes
5. Model option download(Manual method) 7. Adjustment of White Balance
(1) Press `Adj' key of Adjust Remocon ( p/n : 105-201M). 7.1. Test Equipment
(2) Select `Model Option' by using D/E (CH+/-) key, and press - Color Analyzer (CS-1000, CA-100+(CH.9), CA-210(CH.9) )
`VOL+' of `Enter'. - Please adjust CA-100+ / CA-210 by CS-1000 before
(3) Enter the Model number or Select `Model Name' by using measuring
D/E (CH+/-) key. -> You should use Channel 9 which is Matrix compensated
32LG7000-ZA -> 7700000 (White, Red, Green, Blue revised) by CS-1000 and adjust
(4) And then, Press `Enter' or `Vol+' in accordance with White balance adjustment coordinate.
(5) The set is turned off and Turned On automatically.
* Color temperature standards according to CSM and Module
CSM LCD
Cool 11000K
6. Serial number D/L Medium 9300K
6.1 Signal TABLE Warm 6500K
CMD LENGTH ADH ADL DATA_1 ... Data_n CS DELAY
* Change target luminance and range of the Auto adjustment
CMD : A0h W/B equipment.
LENGTH : 85~94h (1~16 bytes)
Target luminance 65
ADH : EEPROM Sub Address high (00~1F)
ADL : EEPROM Sub Address low (00~FF) Gamma 20
Data : Write data
CS : CMD + LENGTH + ADH + ADL + Data_1 + ... + * White balance adjustment coordinate and color temperature
Data_n
Delay : 20ms Cool CS-1000 CA-100+(CH.9) CA-210(CH.9)
X 0.276 0.276±0.002 0.276±0.002
Y 0.283 0.283±0.002 0.283±0.002
6.2 Command Set uv 0.000 0.000 0.000
No. Adjust mode CMD(hex) LENGTH(hex) Description Medium CS-1000 CA-100+(CH.9) CA-210(CH 9)
1 EEPROM WRITE A0h 84h+n n-bytes Write (n = 1~16) X 0.285 0.285±0.002 0.285±0.002
Y 0.293 0.293±0.002 0.293±0.002
uv 0.000 0.000 0.000
* Description
FOS Default write : <7mode data> write Warm CS-1000 CA-100+(CH.9) CA-210(CH 9)
Vtotal, V_Frequency, Sync_Polarity, Htotal, Hstart, Vstart, X 0.313 0.313±0.002 0.313±0.002
0, Phase Y 0.329 0.329±0.002 0.329±0.002
Data write : Model Name and Serial Number write in uv 0.000 0.000 0.000
EEPROM,.
- PC (for communication through RS-232C) -> UART Baud
rate : 115200 bps
6.3 method & notice - Luminance Y AV : upper 150 cd/m2 (TYP : 350 cd/m2)
A. Serial number D/L is using of scan equipment. -> Applying to Cool, Medium, Warm mode
B. Setting of scan equipment operated by Manufacturing
Technology Group.
C. Serial number D/L must be conformed when it is produced 7.2. Connecting picture of the measuring
in production line, because serial number D/L is mandatory instrument (On Automatic control )
by D-book 4.0 Inside PATTERN is used when W/B is controlled. Connect to
auto controller or push Adjustment R/C IN-START -> Enter
the mode of White-Balance, the pattern will come out.
connecting picture (On Automatic Control)
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Only for training and service purposes
7.3. Auto White Balance
1) Adjust in the place where the influx of light like floodlight
around is blocked. (illumination is less than 10ux).
2) Adhere closely the Color Analyzer (CA210) to the module
less than 10cm distance, keep it with the surface of the
Module and Color Analyzer's Prove vertically.(80~100°).
(3) Aging time
- After aging start, keep the power on (no suspension of
power supply) and heat-run over 15 minutes.
- Using `no signal' or `full white pattern' or the others, check
the back light on.
- Auto adjustment Map(RS-232C)
RS-232C COMMAND MIN CENTER Max
[CMD ID DATA] (DEFAULT)
Cool Medium Warm Cool Medium Warm
R Gain jg Ja jd 00 192 192 192 255
G Gain jh Jb je 00 192 192 192 255
B Gain ji Jc jf 00 192 192 192 255
R Cut 64 64 64 128
G Cut 64 64 64 128
B Cut 64 64 64 128
7.4. Manual white Balance
(1) Press the ADJ KEY on Adjustment R/C.
Select "3. Test Pattern" by using D/E(CH +/-) and press
ENTER(A)
Select "White" by using F / G (VOL +/-) and press
ENTER(A) and heat run over 15 minutes.
(2) Zero Calibrate CA-100+ / CA-210, and when controlling,
stick the sensor to the center of LCD module surface.
(3) Press the ADJ KEY on Adjustment R/C
(4) Select "2. White Balance" and press G(VOL +)
Set test-pattern on and display inside pattern.
(5) Control is carried out on three color temperatures, COOL,
MEDIUM, WARM.
(Control is carried out three times)
< Temperature: COOL >
- R-Cut / G-Cut / B-Cut is set to 64.
- Gain of Fixed color should be kept on 192, and
adjust other two lower than 192.
- Each gain is limited to 192.
< Temperature: MEDIUM >
- R-Cut / G-Cut / B-Cut is set to 64.
- Gain of Fixed color should be kept on 192, and
adjust other two lower than 192.
- Each gain is limited to 192.
< Temperature: WARM >
- R-Cut / G-Cut / B-Cut is set to 64.
- Gain of Fixed color should be kept on 192, and
adjust other two lower than 192.
- Each gain is limited to 192.
* One of R Gain / G Gain / B Gain should be kept on
192, and adjust other two lower than 192.
(When R/G/B GAIN are all 192, it is the FULL
DYNAMIC Range of Module)
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Only for training and service purposes
TROUBLE SHOOTING
1. Power Board
1-1. The whole flow chart which it follows in voltage output state
Start check
Yes No
Does not screen Is it identical with Is the interface
whole comes out? power off condition? signal operated?
Yes Yes
No
1. Check the Power off condition. 2. Check the interface signal condition.
Does not Yes Does not the No Does not the No Does not the
low voltage output St-by 5V(P-5V) signal AC Detect signal RL_ON/PWR_ON/OFF
comes out? comes out? comes out? comes out?
Yes Yes Yes
No 3. Check the St_by 5V 4. Check the AC detect 5. Check the VSC RL_ON
signal circuit. signal circuit. /PWR_ON/OFF signal.
No
Does not Yes Does not the No Does not the Does not the
inverter signal output VSC signal INV_CTL INV 24V voltage output VSC Low voltage output
comes out? comes out? comes out? comes out?
Yes Yes Yes
No 7. Check the VSC INV_CTL signal? 8. Check the INV 24V 6. Check the VSC low
voltage output circuit. Voltage output.
Manufacture enterprise
meaning of a passage.
Copyright © 2008 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only
Only for training and service purposes
1-2. In case of No Power
(1) Symptom
1) It does not charge at module.
2) Front LED does not work.
(2) Check the followings
No
A power cord is plugged in with TV set? Plug the power cord in.
Yes
No
Is AC-INLET Cable(Red+Blue) connected with th PSU? Connect the AC-INLET Cable.
Yes
No
Are the fuses OK on the PSU?
Replace the fuse.
(check open or short status with Multi-meter)
Yes
No
Is the PSU connected with Main Board though a 24pin cable? Connect a 24p cable to PSU to Main(P1000)pin.
Yes
Measure output voltages(16V, 12V, 5V) on the PSU.
-> [Main P1000] pin1,2:16V; pin(5,6):12V; pin(9~12):5V;
If the measured values are not a proper value, replace PSU.
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Only for training and service purposes
2. Main Board & Sub FRC B/D
2-1. In case of No Raster
NG : always RED No problem
Check LED A'ssy color. Check LED A'ssy. Replace PSU B/D or Main B/D.
No problem NG
Check remote control Replace LED A'ssy.
Power key off.
No problem
Lamp off Is the inverter OK? NG Re MICOM S/W download
Check inverter lamp
(INV_CTL signal : -> If not OK then replace
On/Of status.
P1000 :pin20) IC802
Lamp On status No problem
NG
Check LVDS Cable. Replace the LVDS Cable. NG
Recheck PSU(+5V, +12V, +16V)
Replace PSU
-> If not OK then replace PSU
No problem
No problem
NG
Check P500 VDD voltage Check Q501, L502,500, No
(pin1~4) 12V PANEL_Vcc_EN signal. Check the PWM signal problem
(P1000, pin 22, 21) Replace the Main B/D.
No problem
NG
Check IC502 power block
NG
Check LVDS data L1200(1.0V), L1213(1.8V) Re App S/W download.
signal(pin11~22, pin27~38) IC1204(3.3V), IC1205(3.3V) If not OK then replace IC100.
IC1206(1.2V)
No problem
No problem NG
Replace T-con board of
LCD Module. Replace IC100. Replace regulator.
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Only for training and service purposes
2-2. In case of abnormal display or sound when RF mode
Check Tuner
Check ATV signal
1. VDD Check -> TU300 pin22:1.8V NG : DTV NG
1. Video signal
pin21: 3.3V Replace TU300.
-> TU Main Signal : R336
pin4:5V
-> Tuner V-out:C318
2. IIC check -> pin10,11 Check App S/W.
Check Front END IC100 NG
No If App S/W OK then
NG : DTV 1. Check C518
NG : DTV problem replace IC100.
Check ATV sound signal
Check DTV signal NG
1. Sound signal
1. TP signal -> Pin 24~34 Replace TU300.
-> SIF : R317
2. IIC check -> pin 18,19
-> SECAM-L sound:R326
NG
No problem
Replace TU300.
Check sound processor NG
Check App S/W.
1. IC603 pin50 for SIF(RF sound)
NG If App S/W OK then replace IC603.
2. IC603 pin47 for SECAM-L sound
Replace Main B/D. No problem
Check Digital AMP No problem
1. VDD 16V:IC600 pin49~52, 32~35 Check App S/W.
VDD 1.8V:IC600 pin2, 13, 16 If App S/W OK then replace Main B/D.
2. Mute check:IC600 pin25
NG
Check App S/W
If App S/W OK then replace IC600.
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Only for training and service purposes
2-3. In case of abnormal display or sound when side AV1(SCART1) mode
Check video signal
Check AV1 Jack Video NG 1. Red : JK100 pin15 and C508 No problem
Check Video, Audio 1. SCART1 LINK check 2. Green : JK100 pin11 and C511 Replace IC100.
->R148 or JK100 pin17 3. Blue : JK100 pin7 and C514
4. CVBS : JK100 pin20 and C1909
Audio NG
NG
Check Audio signal
1. R : JK100 pin2 and