LG_32LD350_LA04A

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LCD TV

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : LA04A

MODEL : 32LD350 32LD350-UA

North/Latin America http://aic.lgservice.com

Europe/Africa http://eic.lgservice.com

Asia/Oceania http://biz.lgservice.com

Internal Use Only

Printed in KoreaP/NO : MFL62863204 (1003-REV00)

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CONTENTS

CONTENTS .............................................................................................. 2

SAFETY PRECAUTIONS ......................................................................... 3

SPECIFICATION....................................................................................... 6

ADJUSTMENT INSTRUCTION .............................................................. 10

EXPLODED VIEW .................................................................................. 16

SVC. SHEET ...............................................................................................

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SAFETY PRECAUTIONS

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in 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 theservicing 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 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.

Leakage Current Hot Check (See below Figure)Plug the AC cord directly into the AC outlet.

Do not use a line Isolation Transformer during this check.

Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor

between a known good earth ground (Water Pipe, Conduit, etc.)

and the exposed metallic parts.

Measure the AC voltage across the resistor using AC voltmeter

with 1000 ohms/volt or more sensitivity.

Reverse plug the AC cord into the AC outlet and repeat AC voltage

measurements for each exposed metallic part. Any voltage

measured must not exceed 0.75 volt RMS which is corresponds to

0.5mA.

In case any measurement is out of the limits specified, there is

possibility of shock hazard and the set must be checked and

repaired before it is returned to the customer.

Leakage Current Hot Check circuit

1.5 Kohm/10W

To InstrumentsexposedMETALLIC PARTS

Good Earth Groundsuch as WATER PIPE,CONDUIT etc.

AC Volt-meter

IMPORTANT SAFETY NOTICE

0.15uF

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CAUTION: Before servicing receivers covered by this service

manual and its supplements and addenda, read and follow the

SAFETY PRECAUTIONSon page 3 of this publication.

NOTE: If unforeseen circumstances create conflict between the

following servicing precautions and any of the safety precautions 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

module or any other receiver assembly.

b. Disconnecting or reconnecting any receiver electrical plug orother 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 thisservice 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

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 unpackagedreplacement ES devices. (Otherwise harmless motion such as

the brushing together of your clothes fabric or the lifting of your

foot from a carpeted floor can generate static electricity

sufficient to damage an ES device.)

General Soldering Guidelines

1. Use a grounded-tip, low-wattage soldering iron and appropriate

tip size and shape that will maintain tip temperature within the

range or 500F to 600F.

2. Use an appropriate gauge of RMA resin-core solder composed

of 60 parts tin/40 parts lead.

3. Keep the soldering iron tip clean and well tinned.

4. Thoroughly clean the surfaces to be soldered. Use a mall wire-

bristle (0.5 inch, or 1.25cm) brush with a metal handle.

Do not use freon-propelled spray-on cleaners.

5. Use the following unsoldering technique

a. Allow the soldering iron tip to reach normal temperature.

(500F to 600F)

b. Heat the component lead until the solder melts.

c. Quickly draw the melted solder with an anti-static, suction-

type solder removal device or with solder braid.CAUTION: Work quickly to avoid overheating the circuit

board printed foil.

6. Use the following soldering technique.

a. Allow the soldering iron tip to reach a normal temperature

(500F to 600F)

b. First, hold the soldering iron tip and solder the strand against

the component lead until the solder melts

SERVICING PRECAUTIONS

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IC Remove/Replacement

Some chassis circuit boards have slotted holes (oblong) through

which the IC leads are inserted and then bent flat against the

circuit foil. When holes are the slotted type, the following technique

should be used to remove and replace the IC. When working with

boards using the familiar round hole, use the standard technique

as outlined in paragraphs 5 and 6 above.

Removal

1. Desolder and straighten each IC lead in one operation by gently

prying up on the lead with the soldering iron tip as the solder

melts.

2. Draw away the melted solder with an anti-static suction-type

solder removal device (or with solder braid) before removing the

IC.

Replacement1. 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

Circuit Board Foil Repair

Excessive heat applied to the copper foil of any printed circuit

board will weaken the adhesive that bonds the foil to the circuit

board causing the foil to separate from or "lift-off" the board. The

following guidelines and procedures should be followed whenever

this condition is encountered.

At IC Connections

To repair a defective copper pattern at IC connections use the

following procedure to install a jumper wire on the copper pattern

side of the circuit board. (Use this technique only on IC

connections).

1. Carefully remove the damaged copper pattern with a sharp

knife. (Remove only as much copper as absolutely necessary).2. carefully scratch away the solder resist and acrylic coating (if

used) from the end of the remaining copper pattern.

3. Bend a small "U" in one end of a small gauge jumper wire and

carefully crimp it around the IC pin. Solder the IC connection.

4. Route the jumper wire along the path of the out-away 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 ConnectionsUse the following technique to repair the defective copper pattern

at connections other than IC Pins. This technique involves the

installation of a jumper wire on the component side of the circuit

board.

1. Remove the defective copper pattern with a sharp knife.

Remove at least 1/4 inch of copper, to ensure that a hazardous

condition will not exist if the jumper wire opens.

2. Trace along the copper pattern from both sides of the pattern

break and locate the nearest component that is directly

connected to the affected copper pattern.

3. Connect insulated 20-gauge jumper wire from the lead of the

nearest component on one side of the pattern break to the lead

of the nearest component on the other side.

Carefully crimp and solder the connections.

CAUTION: Be sure the insulated jumper wire is dressed so the

it does not touch components or sharp edges.

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SPECIFICATIONNOTE : Specifications and others are subject to change without notice for improvement.

1. Application rangeThis spec sheet is applied all of the 19, 22, 26, 32 LCD TVwith LA04A chassis.

2. Requirement for TestEach part is tested as below without special appointment.

1) Temperature: 255C, (779F), CST: 405C2) Relative Humidity: 6510%3) Power Voltage : Standard input voltage(100-240V~, 50/60Hz)

* Standard Voltage of each product is marked by models4) Specification and performance of each parts are followed

each drawing and specif ication by part number inaccordance with BOM.

5) The receiver must be operated for about 20 minutes prior tothe adjustment.

3. Test method1) Performance: LGE TV test method followed2) Demanded other specification

- Safety : UL, CSA, IEC specification- EMC: FCC, ICES, IEC specification

Model Market Appliance

19LD350-UB North America Safety : UL1492, CSA C22.2.No.1,

22LD350-UB EMC : FCC Class B, IEC Class B

26LD350-UB

32LD350-UB

4. General Specification(TV)

No Item Specification Remark

1 Receivable System 1) ATSC / NTSC-M

2 Available Channel VHF : 02 ~ 13

UHF : 14 ~ 69

DTV : 02 ~ 69

CATV : 01 ~ 135

CADTV : 01 ~ 135

3 Input Voltage 1) AC 100 ~ 240V 50/60Hz

4 Market North America

5 Screen Size 19 inch Wide(1366x 768) HD 19LD350-UB

22 inch Wide(1366x 768) HD 22LD350-UB



6 Aspect Ratio 16:9

7 Tuning System FS

8 LCD Module CMO 18.5 HD 60 CCFL CMO

LC190WH1-TLC1 LGD(V4)

CMO 21.6 HD 60 CCFL CMO

LC220WXE-TBA1 LGD(V4)

Sharp 26 HD 60 CCFL Sharp

T260XW04-V3 AUO

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5. Chrominance & Luminance5.1. 32LD350-UB (AUO)

No. Item Min Typ Max Unit Remarks

1 Max Luminance Module 245 294 cd/m2

(Center 1-point / Full White Pattern) Set 300 380

2 Luminance uniformity

3 Color coordinate RED X Typ. 0.64 Typ.

(Default) Y -0.03 0.33 +0.03

GREEN X 0.29

Y 0.60

BLUE X 0.15Y 0.05

WHITE X 0.28

Y 0.29

4 Contrast ratio 1680:1 2100:1

10000:1 15000:1

6 Color Temperature Cool x:0.267 x:0.269 x:0.271 oK The W/B Tolerance is

y:0.271 y:0.273 y:0.275 0.015 for Adjustment

Medium x:0.283 x:0.285 x:0.287

y:0.291 y:0.293 y:0.295

Warm x:0.311 x:0.313 x:0.315

y:0.327 y:0.329 y:0.331

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6. Component Video Input (Y, CB/PB, CR/PR)

No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock 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

4. 720*480 31.47 59.94 27.0 SDTV

5. 1280*720 45.00 60.00 74.25 HDTV

6. 1280*720 44.96 59.94 74.176 HDTV

7. 1920*1080 33.75 60.00 74.25 HDTV

8. 1920*1080 33.72 59.94 74.176 HDTV

9. 1920*1080 67.500 60 148.50 HDTV

10. 1920*1080 67.432 59.94 148.352 HDTV

11. 1920*1080 27.000 24.000 74.25 HDTV

12. 1920*1080 26.97 23.976 74.176 HDTV

13. 1920*1080 33.75 30.000 74.25 HDTV

14. 1920*1080 33.716 29.97 74.176 HDTV

7. RGB Input (PC)


PC DDC

1 640*350 31.469 70.08 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

7 1280*768 47.776 59.87 79.50 CVT(WXGA) X

8 1360*768 47.720 59.799 84.75 CVT(WXGA) O

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PC DDC

1 640*350 31.469 70.08 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 1280*768 47.776 59.87 79.50 CVT(WXGA) X

7 1360*768 47.720 59.799 84.75 CVT(WXGA) O

DTV1 720*480 31.5 60 27.027 SDTV 480P

2 720*480 31.47 59.94 27.00 SDTV 480P

3 1280*720 45.00 60.00 74.25 HDTV 720P

4 1280*720 44.96 59.94 74.176 HDTV 720P

5 1920*1080 33.75 60.00 74.25 HDTV 1080I

6 1920*1080 33.72 59.94 74.176 HDTV 1080I

7 1920*1080 67.500 60 148.50 HDTV 1080P

8 1920*1080 67.432 59.939 148.352 HDTV 1080P

9 1920*1080 27.000 24.000 74.25 HDTV 1080P

10 1920*1080 26.97 23.976 74.176 HDTV 1080P

11 1920*1080 33.75 30.000 74.25 HDTV 1080P

12 1920*1080 33.716 29.97 74.176 HDTV 1080P

8. HDMI input (PC/DTV)

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ADJUSTMENT INSTRUCTION

1. Application rangeThis spec. sheet applies to LA04A Chassis applied LCD TV all

models manufactured in TV factory

2. Specification2.1 Because this is not a hot chassis, it is not necessary

to use an isolation transformer. However, the use ofisolation transformer will help protect test instrument.

2.2 AdjThe adjustment must be perfor med in thecircumstance of 25 5 C of temperature and6510% of relative humidity if there is no specificdesignation.

2.4 The input voltage of the receiver must keep100~240V, 50/60Hz.

2.5 The receiver must be operated for about 5 minutesprior to the adjustment when module is in thecircumstance of over 15

In case of keeping module is in the circumstance of0C, it should be placed in the circumstance of above

15C for 2 hours

In case of keeping module is in the circumstance ofbelow -20C, it should be placed in the circumstance ofabove 15C for 3 hours,.

Caution) When still image is displayed for a period of 20minutes or longer (especially where W/B scale isstrong. Digital pattern 13ch and/or Cross hatchpattern 09ch), there can some afterimage in theblack level area.

3. Adjustment items3.1 Board Level Adjustment

Adjust 480i Comp1(ADC)EDID/DDC download

Above adjustment items can be also performed in Final

Assembly if needed. Both Board-level and Final assemblyadjustment items can be check using In-Star Menu 1.ADJUSTCHECK. Component 1080p and RGB-PC Adjust will becalculated by 480i adjust value.

3.2 Final assembly adjustmentWhite Balance adjustment

4. Automatic Adjustment

4.1. ADC Adjustment(1) OverviewADC adjustment is needed to find the optimum black leveland gain in Analog-to-Digital device and to compensateRGB deviation.

(2) Equipment & Condition1) Jig (RS-232C protocol)2) MSPG-925 Series Pattern Generator(MSPG-925FA)

- Resolution : 480i Comp1 (MSPG-925FA: model-209,pattern-65)

- Resolution : 1024*768 RGB (Inner Pattern)- Pattern : Horizontal 100% Color Bar Pattern- Pattern level : 0.70.1 Vp-p- Image

(3) Adjustment1) Adjustment method

- Using RS-232, adjust items listed in 3.1 in the othershown in 4.1.3.3

2) Adj. protocol

Protocol Command Set ACK

Enter adj. mode aa 00 00 a 00 OK00x

Source change xb 00 40 b 00 OK40x (Adjust 480i Comp1 )

xb 00 60 b 00 OK60x (Adjust 1024*768 RGB)

Begin adj. ad 00 10

Return adj. result OKx (Case of Success)

NGx (Case of Fail)

Read adj. data (main) (main)

ad 00 20 000000000000000000000000007c007b006dx

(sub) (Sub)

ad 00 21 000000070000000000000000007c00830077x

Confirm adj. ad 00 99 NG 03 00x (Fail)

NG 03 01x (Fail)

NG 03 02x (Fail)

OK 03 03x (Success)

End adj. aa 00 90 a 00 OK90x

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5. Manual Adjustment5.1. ADC(Saturn5) Adjustment

(1) OverviewADC adjustment is needed to find the optimum black level

and gain in Analog-to-Digital device and to compensateRGB deviation.

(2) Equipment & Condition1) Adjust Remocon2) 801GF(802B, 802F, 802R) or MSPG925FA Pattern

Generator- Resolution: 480i, 1024*768- Pattern : Horizontal 100% Color Bar Pattern- Pattern level: 0.70.1 Vp-p

- Image

3) Must use standard cable

(3) Adjust method

ADC 480i/1080p Comp1, RGB1) Check connected condition of Comp1 cable to the

equipment2) Give a 480i Mode, Horizontal 100% Color Bar Pattern

to Comp1.(MSPG-925FA -> Model: 209, Pattern: 65)

3) Change input mode as Component1 and picture mode

as Standard4) Press the In-start Key on the ADJ remote after at least1 min of signal reception. Then, select 5.ADCCalibration. And Press OK Button on the menu Start.The adjustment will start automatically.

5) If ADC Comp 480i is successful, ADC ComponentSuccess is displayed and Comp480i/1080p iscompleted.If ADC calibration is failure, ADC Component Fail isdisplayed.

6) If ADC calibration is failure, after rechecking ADC

pattern or condition, retry calibration7) After completing ADC Component, input mode will be

changed to RGB automatically.8) If ADC calibration is successful, ADC RGB Success

is displayed. If ADC calibration is failure, ADC RGBFail is displayed.

9) If ADC calibration is failure, after recheck ADC patternor condition retry calibration

5.2 EDID/DDC Download

(1) OverviewIt is a VESA regulation. A PC or a MNT will display anoptimal resolution through information sharing without anynecessity of user input. It is a realization of Plug and Play.

(2) Equipment Adjust remocon. Since embedded EDID data is used, EDID download JIG,

HDMI cable and D-sub cable are not need.

(3) Download method1) Press Adj. key on the Adj. R/C,2) Select EDID D/L menu.

3) By pressing Enter key, EDID download will begin4) If Download is successful, OK is display, but If

Download is failure, NG is displayed.5) If Download is failure, Re-try downloads.

Caution) When EDID Download, must remove RGB/HDMICable.

(4) EDID DATA1)LD350 Tool(HD) HDMI I [C/S: XXBA]

EDID Block 0 table =


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HDMI II [C/S: XXAA]EDID Block 0 table =


RGB [C/S: XX]EDID Block 0 table =

5.3. White Balance Adjustment(1) Overview

W/B adj. Objective & How-it-works- Objective: To reduce each Panels W/B deviation- How-it-works: When R/G/B gain in the OSD is at 192, it

means the panel is at its Full DynamicRange. In order to prevent saturation ofFull Dynamic range and data, one ofR/G/B is fixed at 192, and the other two islowered to find the desired value.

- Adj. condition : normal temperature1) Surrounding Temperature: 255C2) Warm-up time: About 5 Min3) Surrounding Humidity: 20% ~ 80%

(2) Equipment1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12)2) Adj. Computer(During auto adj., RS-232C protocol is

needed)3) Adjust Remocon4) Video Signal Generator MSPG-925F 720p/216-Gray

(Model:217, Pattern:78)-> Only when internal pattern is not available

Color Analyzer Matrix should be calibrated using CS-1000

(3) Equipment connection MAP

(4) Adj. Command (Protocol)1) RS-232C Command used during auto-adj.

Ex) wb 00 00 -> Begin white balance auto-adj.wb 00 10 -> Gain adj.

ja 00 ff -> Adj. datajb 00 c0......wb 00 1f -> Gain adj. complete*( b 00 20( t t) b 00 2f( d)) Off t dj

Color Analyzer

Computer

Pattern Generator

RS-232C

RS-232C

RS-232C

Probe

Signal Source

* If TV internal pattern is used, not needed

Connection Diagram of Automatic Adjustment

RS-232C COMMANDMeaning

[CMD ID DATA]

wb 00 00 Begin White Balance adj.

wb 00 ff End White Balance adj.(Internal pattern disappeared)

70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 00 71

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2) Adjustment MapApplied Model : 19LD350-UB, 22LD350-UB, 26LD350-UB,

32LD350-UB

(5) Adj. method Auto adj. method

1) Set TV in adj. mode using POWER ON key2) Zero calibrate probe then place it on the center of the

Display3) Connect Cable(RS-232C)4) Select mode in adj. Program and begin adj.5) When adj. is complete (OK Sing), check adj. status pre

mode (Warm, Medium, Cool)6) Remove probe and RS-232C cable to complete adj.

* W/B Adj. must begin as start command wb 00 00 , andfinish as end command wb 00 ff, and Adj. offset ifneed

Manual adj. method1) Set TV in Adj. mode using POWER ON2) 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 (KEYG ).

(When KEY(G ) is pressed 216 Gray internal patternwill be displayed)

4) One of R Gain / G Gain / B Gain should be fixed at192, and the rest will be lowered to meet the desiredvalue

* Adj. condition and cautionary items1) Lighting condition in surrounding area

Surrounding lighting should be lower 10 lux. Try toisolate adj. area into dark surrounding.

2) Probe location

- LCD: Color Analyzer (CA-210) probe should bewithin 10cm and perpendicular of the modulesurface (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.

(6) Reference (White Balance Adj. coordinate and colortemperature) Luminance: 216 Gray Standard color coordinate and temperature using CS-

1000 (over 26 inch)

26/32LD350-UB

19/22LD350-UB (Small size panel have different colorcoordinate)

Standard color coordinate and temperature using CA-210(CH 9)

26/32LD350-UB

19/22LD350-UB (Small size panel have different colorcoordinate)

ITEM Command Data Range Default

(Hex.) (Decimal)Cmd 1 Cmd 2 Min Max

Cool R-Gain j g 00 C0

G-Gain j h 00 C0

B-Gain j i 00 C0

R-Cut

G-Cut

B-Cut

Medium R-Gain j a 00 C0

G-Gain j b 00 C0B-Gain j c 00 C0

R-Cut

G-Cut

B-Cut

Warm R-Gain j d 00 C0

G-Gain j e 00 C0

B-Gain j f 00 C0

R-Cut

G-Cut

Mode Color Coordination Temp UV

x y

COOL 0.269 0.273 13000K 0.0000

MEDIUM 0.285 0.293 9300K 0.0000

WARM 0.313 0.329 6500K 0.0000


x y

COOL 0.285 0.293 9300K 0.0000

MEDIUM 0.295 0.305 8000K 0.0000

WARM 0.313 0.329 6500K 0.0000


x y

COOL 0.2690.002 0.2730.002 13000K 0.0000

MEDIUM 0.2850.002 0.2930.002 9300K 0.0000

WARM 0.313+0.002 0.3290.002 6500K 0.0000


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5.4. HDCP SETTING- HDCP setting is not necessary in Saturn5 model.

5.5 Option selection per country(1) Overview- Option selection is only done for models in Non-USA

North America due to rating- Applied model: LA92A Chassis applied None USA

model(CANADA, MEXICO)

(2) Method1) Press ADJ key on the Adj. R/C, then select Country

Group Menu2) Depending on destination, select KR or US, then on the

lower Country option, select US, CA, MX. Selection isdone using +, - KEY

5.6. Tool Option selection Method: Press Adj. key on the Adj. R/C, then select Tooloption.

5.7. Ship-out mode check (In-stop)

After final inspection, press In-Stop key of the Adj. R/C andcheck that the unit goes to Stand-by mode.

After final inspection, Always turn on the Mechanical S/W.

6. GND and Internal Pressure check6.1. Method

1) GND & Internal Pressure auto-check preparation- Check that Power Cord is fully inserted to the SET.

(If loose, re-insert)2) Perform GND & Internal Pressure auto-check

- Unit fully inserted Power cord, Antenna cable and A/Varrive to the auto-check process.

- Connect D-terminal to AV JACK TESTER- Auto CONTROLLER(GWS103-4) ON- Perform GND TEST- If NG, Buzzer will sound to inform the operator.- If OK, changeover to I/P check automatically.

(Remove CORD, A/V form AV JACK BOX)- Perform I/P test- If NG, Buzzer will sound to inform the operator.- If OK, Good lamp will lit up and the stopper will allow the

pallet to move on to next process.

6.2. Checkpoint TEST voltage

- GND: 1.5KV/min at 100mA- SIGNAL: 3KV/min at 100mA

TEST time: 1 second TEST POINT

- GND TEST = POWER CORD GND & SIGNAL CABLEMETAL GND

- Internal Pressure TEST = POWER CORD GND & LIVE &NEUTRAL

LEAKAGE CURRENT: At 0.5mArms

Model Tool 1 Tool 2 Tool 3 Tool 4 Menu

19LD350(CMO) 1 HDMI

19LD350(LGD) 2689 548 1442 1824 1 HDMI22LD350(CMO) 1HDMI

22LD350(LGD) 6785 548 1442 1824 1 HDMI

26LD350(Sharp) 2HDMI

26LD350(AUO) 10897 1576 1442 1824 2 HDMI

32LD350(AUO) 19089 1576 34210 1824 2 HDMI

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510

1

20

A10

200

800

530

550

810

900

910

540

521

400

A21

A2

A5

LV1

EXPLODED VIEW

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These

parts are identified by in the Schematic Diagram and EXPLODED VIEW.It is essential that these special safety parts should be replaced with the same components as

recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.

Do not modify the original design without permission of manufacturer.

IMPORTANT SAFETY NOTICE

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THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES

SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.

FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS

ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR

THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

KEY2

D2404

5.6VCDS3C05HDMI1

OPT

R2412100

EYEQ

R240322

COMERTIAL

R2408

47K

COMERTIAL

C2408

1000pF

50VOPT

R240947K

COMERTIAL

+3.5V_ST

C24050.1uF

16V

C24020.1uF

26"~32"

D24015.6V

AMOTECH

26"~32"

R2402100

C2407100pF50V

C24041000pF50V

L2402BLM18PG121SN1D

26"~32"

C24010.1uF

26"~32"

LED_R/BUZZ

+3.3V_Normal

+3.5V_ST

C24061000pF50V

D2403

5.6VCDS3C05HDMI1

OPT

R2410100

C24100.1uF

16V

OPT

R2401100

LED_B/LG_LOGO

C2409

1000pF

50VOPT

+3.5V_ST

KEY1

L2403

BLM18PG121SN1D

L2401

BLM18PG121SN1D

26"~32"

R2411100

EYEQ

C24030.1uF

16V

R2416

10K

Q2402

2SC3052

COMERTIAL

E

B

C

D24055.6V

AMOTECH

L2404

BLM18PG121SN1D

IR_OUT

D24025.6V

AMOTECH

26"~32"

R2404

10K1%

R2405

10K

1%

P2401

12507WR-12L

1SCL

2SDA

3GND

4KEY1

5KEY2

6ST_3.3V

7GND

8LED_B

9IR

10GND

11+3.3V

12LED_R

13

GND

R2425

47K

Q2406

2SC3052E

B

C

R2429

47K

R243010K

R243147K

R242822

+3.5V_ST

Q2405

2SC3052E

B

C

+3.5V_ST

IR +3.5V_ST

R2426

3.3K

OPT

R24270

OPT

SCL_SUB/AMP

SDA_SUB/AMP

L2405

BLM18PG121SN1D

19"~22"

D2407

5.6V

19"~22"

C2412

0.1uF

16V

19"~22"

P2402

12507WR-03L

19"~22"

1

2

3

4

C2411

0.1uF

16V

19"~22"

D2406

5.6V

19"~22"

L2406

BLM18PG121SN1D

19"~22"

R24131.5K

R24141.5K

CONTROL

IR & LED

IR & LED

COMMERCIAL

6

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R77090

R77110

R7756

4.7K

CK+_HDMI2

R77380

D1-_HDMI4

D7701

DDC_SCL_4

D1+_HDMI2

Q77022SC3052

E

B

C

R7735 100

R77100

R7702

1K

R7730

1K

R7755

10K

C7700

0.1uF

16V

R77360

R77370

R7706 22

HPD4

D2+_HDMI2

D0+_HDMI2

DDC_SDA_4

R77130

R7705

3.3K

OPT

D2-_HDMI2

5V_HDMI_2

D0-_HDMI4

R7749 22

DDC_SCL_2

C7704

0.1uF

D7702

R77150

CK-_HDMI2

IC7701

AT24C02BN-10SU-1.8

HDMI_2

3A2

2A1

4GND

1A0

5SDA

6SCL

7WP

8VCC

+5V_Normal

D1-_HDMI2

Q77012SC3052

E

B

C

D7705

ENKMC2838-T112

A1

C

A2

R77120

D0-_HDMI2

DDC_SDA_4

C7705

0.1uF

DDC_SDA_2

R7731

1.8K

D2-_HDMI4

5V_HDMI_4

DDC_SDA_2

HPD2

R77410

R7760

4.7K

HDMI_CEC

5V_HDMI_2

D1+_HDMI4

R77430

5V_HDMI_4R7744

10K

CK-_HDMI4

D0+_HDMI4

R77420

CK+_HDMI4

R77140

R7707 22

R7757

10K

R7750 22

IC7702

AT24C02BN-10SU-1.8

HDMI_4

3A2

2A1

4GND

1A0

5SDA

6SCL

7WP

8VCC

C7702

0.1uF

16V

DDC_SCL_4

R7703

1.8K

EEPROM_WPR7732

3.3K

OPT

R77390

D2+_HDMI4

D7706

ENKMC2838-T112

A1

C

A2

+5V_Normal

5V_DET_HDMI_2

EEPROM_WP

R7729

10K

R77400

R77160

HDMI_CECR7708 100

DDC_SCL_2

5V_DET_HDMI_4

VR7700

AVRL161A1R1NT

GND

HDMI_CEC CEC_REMOTE

C7706

0.1uF

16V

+3.5V_ST

GND

R7762

10K

D7703

R7746

0OPT

R7733 22

R7734 22

R7751 22

R7752 22

R7758

4.7K

R7761

4.7K

JK7702

EAG42463001

HDMI_4

14

13

5D1_GND

20

JACK_GND

12

11

2D2_GND

19

18

10CK+

4D1+

1D2+

17

9D0-

8D0_GND

3D2-

16

7D0+

6D1-

15

VR7701

AVRL161A1R1NT

OPT

GND

BSS83Q7703

S B D

G

R7745

68K

R770068KOPT

MDS62110201

M1 OPT

MDS62110201

M2 OPT

MDS62110201

M3 OPT

JK7700

EAG59023301

HDMI_

2

14

13

5D1_GND

20

SHIELD

12

11

2D2_GND

19

18

10CK+

4D1+

1D2+

17

9D0-

8D0_GND

3D2-

16

7D0+

6D1-

15

HDMI

HDMI_4

$0.253

HDMI_2

$0.055

HDMI EEPROM

$0.253

$0.055

For CEC

8

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THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.RS-232C

R1285 100

OPT

R1281100

L1209BLM18PG121SN1D

C1234

0.1uF

16V

R1302220

R1282

100

R1299220

+3.5V_ST

C1243

47pF

50V

R12750

C1242

47pF

50V

R1278

4.7K

C1229 0.33uF

C1239220pF50V

DBG_TX

R1279

4.7K

DBG_RX

R12760

C1235

220pF

50V

R1284 100OPT

C12320.1uF

C1233 0.1uF

C1231 0.1uF

C1230 0.1uF

IC1201

MAX3232CDR

3C1-

2V+

4C2+

1C1+

6V-

5C2-

7DOUT2

8RIN2

9ROUT2

10DIN2

11DIN1

12ROUT1

13RIN1

14DOUT1

15GND

16VCC

D1236

30VOPT

ADUC30S03010L

D1237

30VOPT

ADUC30S03010L

IR_OUT

JK1201

SPG09-DB-009

1

2

3

4

5

6

7

8

9

10

TxD

RxD

male

Serial Port

RS-232C

RS-232C

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SIDEAV_R_IN

SIDEAV_L_IN

D33025.6V

SIDE_AV_OPT

R3306

10K

SIDE_AV_OPT

R330812K

SIDE_AV_OPT

SIDEAV_CVBS_IN

D33045.6V

SIDE_AV_OPT

R3307

10K

SIDE_AV_OPT

C3303

100pF

50V

SIDE_AV_OPT

L3303BLM18PG121SN1D

SIDE_AV_OPT

D3301

30V

SIDE_AV_OPT

L3301BLM18PG121SN1D

SIDE_AV_OPT

R33051K

SIDE_AV_OPT

R3302

10KSIDE_AV_OPT

C3302

100pF50V

SIDE_AV_OPT

D33035.6V

SIDE_AV_OPT

+3.3V_Normal

R3304470K

SIDE_AV_OPT

R3303

470K

SIDE_AV_OPT

R3309

12K

SIDE_AV_OPT

L3302BLM18PG121SN1D

SIDE_AV_OPT

C3301

100pFSIDE_AV_OPT

C3304

100pF

OPT

SIDEAV_DET

R330175

SIDE_AV_OPT

JK3302

PPJ235-01

SIDE_AV_OPT

4A [YL]O-SPRING

5A [YL]E-LUG

3A [YL]CONTACT

4B [WH]O-SPRING

3C [RD]CONTACT

4C [RD]O-SPRING

5C [RD]E-LUG

SIDE AV

(New Item Developmen H:9.2mm)

SIDE_AV

11

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USB

DOWN

STR

EAM






D1452

5.6V

CDS3C05HDMI1

OPT

JK1450

KJA-UB-4-0004

1

2

3

4

5

L1451

MLB-201209-0120P-N2

120-ohm

SIDE_USB_DP

SIDE_USB_DM

D1451

5.6VCDS3C05HDMI1

OPT

C1451

22uF

10V

IC1450

AP2191SG-13

3IN_2

2IN_1

4EN

1GND

5FLG

6OUT_1

7OUT_2

8NC

C1452

10uF

10V

+5V_USB

C1453

0.1uF

R1455

4.7KOPT

+3.3V_Normal

R1456 0

USB_CTL

R145410K

R1451 47 USB_OCD

USB_DIODES

$0.077

09.09.03LD350

14USB

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THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.SERIAL FLASH

R104

33

+3.3V_Normal

+3.3V_Normal

Flash_WP_1

001:AR30

R102 0OPT

SPI_CS

001:AR36

+3.3V_Normal

C126

0.1uF

R103

10K

SPI_DI

001:AR36

SPI_CK

001:AR35

R 10 1 0

SPI_DO

001:AR36

R105

4.7K

L110

Q100KRC103S

E

B

C

IC101

MX25L3205DM2I-12G

3WP#

2

SO

4GND

1CS#

5SI

6SCLK

7

HOLD#

8VCC

SERIAL FLASH

Serial FLASH MEMORYfor BOOT

LD350 09.09.03

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+5V_TU

TUNER_RESET

IF_AGC

C5006

100pF

50V

FE_VMAIN

R5009100

+3.3V_TU

R50010

OPT

C5003

0.1uF16V

L5003

BLM18PG121SN1D

+3.3V_Normal

+3.3V_TU

C50240.1uF

16V

C5018

22uF

16VOPT

+1.26V

+5V_TU

IF_N_MSTAR

Q5005

ISA1530AC1

TU_CVBS_BUFER

E

B

C

+3.3V_TU

+3.3V_TU

C50100.1uF16V

C5007

0.1uF

16V

FE_TUNER_SDA

R5027

1K

OPT

R5015100

L5002

BLM18PG121SN1D

5V_TU_Normal

R5003 0

R5018

3.3K

C50210.1uF16V

R50254.7K

R5026

1K

OPT

R5011100K

C5022

0.1uF

16V

C5025

100pF 50V

R5002

0

OPT

C5001

100pF50V

+3.3V_TU

R50221K

C5016

0.1uF

16V

C5023

0.1uF

16V

R503282

+5V_TU

C5017

22uF

16VOPT

FE_SIF

Q5004

ISA1530AC1

E

B

C

C5020

22uF

16V

R5016100

C5019

22uF

16V

IF_P_MSTAR

R 50 23 0

FE_TUNER_SCL

+5V_TU

+5V_Normal

R5020

3.3K

+1.26V

R50331

C5028

0.1uF

16V

C5029

10uF

10V

R5034 0

R5035 0

C500482pF50VINNOTEK

L5000INNOTEK

VCOMO

C50000.047uF50V

R500010KOPT

R5004

0 1/16W

5%

TU_CVBS_BUFER

R50052.2KOPT

C5005

0.1uF

OPT

R5006

47OPT

SIFMO

R5007

5.6K

1/16W

5%

OPT

VSB_RESET

R98230

R98240

OPT

R5029470

1608

TU5001

TDVJ-H001F

143.3V

131.2V

5AS

12GND

11VIDEO

2BST_CNTL

10NC

4

NC[RF_AGC]

1ANT_PWR[OPT]

17DIF_1

9SIF

8NC(IF_TP)

3+B

16

IF_AGC_CNTL

7SDA

6SCL

15RESET

18DIF_2

19

SHIELD

+5V_USB

L5004

BLM18PG121SN1D

5V_TU_USB

IC5001

AP1117EG-13

ADJ/GND

OUTIN

R5008

120

C5002

22uF

10V

R50302202012

TU_CVBS_BUFER

R50312202012

TU_CVBS_BUFER

R5010100KOPT

C5012

47pF

50V

C5013

47pF

50V

R5024 0

TU_CVBS_BUFER

R50120

TU_CVBS_BYPASS

ATSC_CAN TUNER

Close to the tuner

200mA

should be guarded by ground

60mA

26

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MStar Option

POWER ON/OFF2 2

001:AR30;007:AH18

VSB B+ BLOCK

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THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.VSB_DEMOD

TS_DATA[1]

TS_DATA[6]

TS_DATA[2]

TS_DATA[4]

TS_DATA[5]

TS_DATA[0]

TS_DATA[3]

TS_DATA[0-7]

TS_DATA[0-7]

TS_DATA[7]

C102810uF16V

3216

+1.2V_DVDD_PVSB

+3.3V_PVSB

C102310uF16V

3216

C103810uF16V

3216

R1034

0

1/4W

5%

+1.2V_PVSB

+3.3V_AVDD_PVSB

+3.3V_DVDD_PVSB

+3.3V_PVSB

+5V_Normal

C1020

0.1uF

50V

C1002

100uF

16VOPT

C1018

100uF

16V

L1000MLB-201209-0120P-N2

OPT

+3.3V_PVSB

R1015

8.2KOPT

R1014

15K OPT

R10014.7KOPT

R10021K

OPT

C10030.1uF

50VOPT

IC1001

SC156515M-1.8TR

OPT

2VIN

1EN

3

GND

5ADJ

4VO

VSB_RESET

TS_DATA[0-7]

C10680.1uF

R1063 1K

TS_SYNC

X1005

25MHz

R107722

TS_SYNC

C10670.1uF

R1065 0OPT

TS_VALID

AR1070 100

+3.3V_DVDD_PVSB

TS_CLK

R107822

C107227pF

+3.3V_DVDD_PVSB

R10730

R1069

470

AR10791001/16W

LD1000

FE_DEMOD_SCL

JP1004

C107127pF

D10001N4148W

R1072 1M

FE_DEMOD_SDA

+3.3V_AVDD_PVSB

JP1007

+3.3V_AVDD_PVSB

C10731uF

10V

AR1071100

R1076

0OPT

TS_VALID

R107447K

C10700.01uF

R1075OPT

R1066 OPT

JP1005

+1.2V_DVDD_PVSB

IF_AGC

JP1006

IF_N_MSTAR

C10690.01uF

R10685.1KOPT

R10601K

R1064 100

IF_P_MSTAR

TS_CLK

C1026

0.1uF

50V

C1030

0.1uF

50V

C1032

0.1uF

50V

C1033

0.1uF

50V

C10430.1uF

50V

C1044

0.1uF

50V

C10660.1uF

R1061100

R1062100

L1005500

L1007

500L1008

500

R1067 OPT

C10761uF16V

R101120K

R1035100OPT

IC1000

SC4215ISTRT

3VIN

2EN

4NC_2

1NC_1

5NC_3

6VO

7ADJ

8GND

POWER_ON/OFF2_2

C1019

100uF

16V

+1.2V_PVSB

C1079

0.1uF

50V

R101210K

IC1004

LGDT3305

1

2

3

4

5

6

7

8

9

10

11

12

13

141516

1718

19

20

21

22

23

24

2526

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

L1219

CB3216PA501E

C21380.1uF50V

R103620K

C10782.2uF16V

C10772.2uF16V

+3.3V_TU

C1074

22pF

50V

OPT

C1075

22pF

50V

OPT

VSB +1.0V B+ BLOCK

VSB +3.3V B+ BLOCK

VDD33

VSSAD10

VCCAAD10A

VDD

VSS33

SLIM_SCAN

OPM

VSS

XTALI

TPDATA[1]

TPDATA[2]

TPDATA[3]

TPDATA[4]

TPDATA[5]

TPDATA[6]

TPERR

TPDATA[7]

VDD33

JTAG

TPVALID

TPDATA[0]

VSS33

VSSAAD10A

IF OUT

I2CRPT_SDA

I2CRPT_SCL

VINA1

I2CSEL

VINA2

RF OUT

VDD

INCAP

ANTCON

VROA

VSS

VDD33

SCL

TPCLK

SDA

VSS33

VDD

PLLAVDD

PLLAVSS

TPSOP

VSS

NIRQ

XM

XTALO

NRST

V0 = 0.8(R1+R2) / R2

R1

R2

VSB_DEMOD

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COMP1_PR

C9800100pF50V

OPT

D98065.6V

D9802

30V

D98085.6V

D9800

5.6V

D98015.6V

R980010K

R9813470K

R980210K

R981710K

C9803

10pF

50V

OPT

R9814470K

R9810470K

AV_CVBS_DET

R981610K

C9808

1000pF

50V

COMP1_Y

D98055.6V

C9801

10pF

50V

OPT

+3.3V_Normal

R981510K

R981810K

AV_CVBS_IN

D980430V

R981912K

+3.3V_Normal

R980775

COMP1_PB

AV_R_IN

R982112K

C9806

1000pF

50V

D980330V

AV_L_IN

R982212K

COMP1_DET

R981275

COMP1_L_IN

C9802

10pF

50VOPT

C9804

1000pF

50V

C9805

1000pF

50V

R98011K

R982012K

R9811470K

COMP1_R_IN

D98075.6V

R980975

D980930V

R980875

R98031K

C9807

10pF

50V

OPT

JK9800

PPJ238-01

5D [GN2]O-SPRING

6D [GN2]E-LUG

4D [GN2]CONTACT

7E [BL2]E-LUG-S

5E [BL2]O-SPRING

7F [RD2]E-LUG-S

5F [RD2]O-SPRING_1

5G [WH2]O-SPRING

4H [RD2]CONTACT

5H [RD2]O-SPRING_2

6H [RD2]E-LUG

6A [YL1]E-LUG

5A [YL1]O-SPRING

4A [YL1]CONTACT

5B [WH1]O-SPRING

4C [RD1]CONTACT

5C [RD1]O-SPRING

6C [RD1]E-LUG

COMPONENT&AV

LD350 09.09.03

31

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TXAC-[5]

TXA4+[0]

TXA3+[2]

R8180

HD

TXA1-[9]

R8170

HD

R8160

HD

R8150

HD

R8140

HDTXAC+[4]

R8130

HD

R8120

HD

R8110

HD

R8100

HD

TXA2+[6]

R8090

HD

TXA4-[1]

TXA3-[3]

TXA1+[8]

TXA2-[7]

LVDS_TXA1+

LVDS_TXA3+

LVDS_TXA2+

LVDS_TXA3-

LVDS_TXA0+

LVDS_TXA0-

LVDS_TXA2-

LVDS_TXA1-

LVDS_TXAC-

LVDS_TXAC+ LVDS_TXA0-

LVDS_TXA0+

LVDS_TXA1-

LVDS_TXA1+

LVDS_TXA2-

LVDS_TXA3+

LVDS_TXA3-

LVDS_TXAC+

LVDS_TXAC-

LVDS_TXA2+

P802

FF10001-30

HD_60Hz_Normal

1 GND

2 GND

3 NC

4 NC

5 GND

6 TXA3+

7 TXA3-

8 GND

9 TXAC+

10 TXAC-

11 GND

12 TXA2+

13 TXA2-

14 GND

15 TXA1+

16 TXA1-

17 GND

18 TXA0+

19 TXA0-

20 GND

21 NC

22 LVDS_SEL

23 GND

24 GND

25 GND

26 GND

27 VCC

28 VCC

29 VCC

30 VCC

31

GND

PANEL_VCC

L802CB3216PA501E

HD_60Hz_Normal

C80822uF25V

HD_60Hz_Normal

C804

1000pF

HD_60Hz_Normal

C806

0.1uF

HD_60Hz_Normal

+3.3V_Normal

R823

10K

AUO26"~32"

PANEL_VCC

L801CB3216PA501EHD_60Hz_SMALL

C80722uF25V

HD_60Hz_SMALL

C803

1000pF

HD_60Hz_SMALL

C805

0.1uF

HD_60Hz_SMALL

R8190

26"~32"

R 80 6 0

26"~32"

R822

5.1K

CMO&Sharp

OPC_OUT

P801

FF10001-30HD_60Hz_SMALL

1 VCC

2 VCC

3 VCC

4 VCC

5 VCC

6 GND

7 GND

8 GND

9 NC

10 NC

11 NC

12 GND

13 TXA3+

14 TXA3-

15 GND

16 TXAC+

17 TXAC-

18 GND

19 TXA2+

20 TXA2-

21 GND

22 TXA1+

23 TXA1-

24 GND

25 TXA0+

26 TXA0-

27 GND

28 NC

29 PWM_OUT

30 NC

31

GND

R808100 LGD_OPC

R8201K

22"CMO

R8210 26"~32"

TXA4+[0]

TXA4-[1]

TXA3+[2]

TXA3-[3]

TXAC+[4]

TXA2+[6]

TXAC-[5]

TXA1+[8]

TXA2-[7]

TXA1-[9]

09.09.03LD350

32LVDS

VESA(NS)

JEIDA

LVDS_SEL

[30Pin LVDS Connector](For HD 60Hz_Normal)

CMO 22"

LOW

H I GH L OW / OP E N

AUO 26"/32"

HIGH

HIGH/OPEN(Defult)

LOW(GND)

Sharp 26"/32"

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2. Digital TV Video

Check RF Cable & Signal

Check Tuner 3.3V Power

L5003Replace L5003


IC5001 2 pin : 1.2V

Check IF_P/N Signal

TU5001 17/18 Pin

Check Demodulator Input

Clock(X1005-25Mhz) Replace X1005

Check IC1004(LGDT) Output

Replace IC5001.

Check Tuner 5V Power

L5004

Check +5V_USB Voltage

IC401

ok

ok

ok

ok

ok

ok

No

No

No

No

No

No

Replace IC401No

Bad Tuner. Replace Tuner.

Replace IC1004

Replace L5004ok

Check IC1004(LGDT) VCC

ok

NoCheck VCCIN/OUT

IC1001,IC100

No

Replace IC1001,IC100

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3. Analog TV Video



L5003Replace L5003


IC5001 2 pin : 1.2V

Check CVBS Signal

TU5001 11 Pin

Replace IC5001.


L5004Check IC401

Check Mstar LVDS Output Replace Mstar(IC100) or Main Board.

ok

ok

ok

ok

ok

No

No

No

No

No

Replace IC401No


Replace L5004ok

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ok

4. AV Video

Check input signal format.Is it supported?

Check AV Cable for damage

for damage or open conductor

Check JK9800 (*JK3302)

CVBS Signal Line

R137 (*R114)

Check CVBS_DET Signal Replace R9802 or R9803

ok

ok

ok

No

No

Replace Jack* JK3302 is Side AV supported model

26/32LD350 models

5. Component Video

Check input signal format.

Is it supported?

Check Component Cablefor damage or open conductor.

Check JK9800

ok

ok

No


No

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6. RGB Video


Is it supported?

Check RGB Cable conductors


Check EDID & EEPROM

IC1105 I2C Signal

R1141, R1143(SDA,SCL)

Check JK1104

H/V_Sync/R/G/B Signal Line

(R146/149/127/128/129)

ok

ok

ok

No

No

Replace the defective IC or re-download EDID data

Check DSUB_DET Replace R1146 or R1147

ok

No

Replace Jack


ok

No

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7. HDMI Video


Is it supported?

Check HDMI Cable conductors

for damage or open conductor.

Check EDID & EEPROM

IC7701 (*IC7702)

I2C Signal

Check JK7700, JK7702

ok

ok

ok

No

No

Replace the defective IC or re-download EDID data

Check HDCP Key NVRAM(IC105)

Power & I2C SignalReplace the defective IC.

ok

No

Replace Jack* JK7702 is Side HDMI supported model

26/32LD350 models

Check HDMI SignalCheck other set

If no problem, check signal line

ok

No

ok

Replace Main BoardNo

Check HDMI_DET(HPD)No

ok

Replace R7703,R7705,R7731,R7732

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8. All Source Audio

Check the TV Speaker Menu

(Menu -> Sound -> TV Speaker)

On

ok

ok

Check Output Signal P600

1, 2, 3, 4 pin.Replace Audio AMP IC(NTP-3100L)

IC600.

ok

No

Check Connector & P600Replace connector

if found to be damaged.

ok

No

ok

OffToggle the Menu

Check AMP IC(IC600) Power

*20V, 3.3V, 1.8V.

NoCheck Regulator IC601

*20V Voltage is dependent on Model

26/32LD350 => 24V

19/22LD350 => 15V

Check Mstar I2S Output

R604, R605, R606

NoCheck signal line. Or replace Mstar(IC100)

Check Mstar AUDIO_MASTER_CLK

R603

NoReplace Mstar(IC100) or Main Board.

ok

Check AMP I2C Line

R607, R608

NoCheck signal line. Or replace Mstar(IC100)

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9. Digital TV Audio



L5003Replace L5003


IC5001 2 pin :1.2V

Check IF_P/N Signal

TU5001 17/18 Pin

Check Demodulator InputClock(X1005-25Mhz)

Replace X1005

Replace IC5001.


L5004Check IC401

ok

ok

ok

ok

ok

ok

No

No

No

No

No

No

Replace IC401No

Replace L5004ok


Check IC1004(LGDT) VCC

NoCheck VCCIN/OUT

IC1001,IC100

No

Replace IC1001,IC100

ok

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12. Component Audio

Check Component Cable

for damage or open conductor.

Check JK9800 & Signal Line

ok

ok

NoReplace Jack

11. AV Audio

Check AV Cable for damagefor damage or open conductor

Check JK9800, *JK3302

& Signal Line

ok

ok

NoReplace Jack

* JK3302 is Side AV supported model

26/32LD350 models

Follow procedure

8. All source audio

trouble shooting guide.

Follow procedure

8. All source audio

trouble shooting guide.

13. RGB AudioCheck Cable conductors


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LG Electronics/ LCD TV Division

LCD TV Gr.

LD350 Block Diagram

Video Signal BlockVideo Signal Block

Audio Signal BlockAudio Signal Block

Flash Block & ResetFlash Block & Reset

MSD3368 I2C BlockMSD3368 I2C Block

MSD3368 GPIO BlockMSD3368 GPIO Block

POWER BlockPOWER Block

Overall Block DiagramOverall Block Diagram

< Contents >

LVDS BlockLVDS Block

Copyright 2010 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only

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Audio Signal Block

Audio Signal Block

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MSD 8GV

AUL2

AUR2

SPDIF_OUT

I2S_OUT_MCK

AV_L_IN

AV_R_IN

AUL1

AUR1

AUL0

AUR0

AUL4

AUL5

COMP1_R_IN

COMP1_L_IN

SIDEAV_R_IN

SIDEAV_L_IN

PC_R_IN

PC_L_IN

I2S_SCK

I2S_LCRK

I2S_MASTER_CLK

Digital AMPNTP3100N

SPDIF_OUT

I2S_LCRH

+3.3V

1K

HP AMPTPA6110A2D

HP/ LH/P

HP/ RHP_ROUT

HP_LOUT

SIF0P

CVBS0/RF_CVBS

IF +/-

SIF

TU_CVBS

LGDT3305IF AGC

TS_Sync/VLD

TS_Clk

TS_Data[0-7]

RF

TDVJ

- H031F TS0_D[0-7]

TS0_CLK

TS0_SYNC/VLD

I2S_OUT_BCK

I2S_OUT_WS

I2S_OUT_SD


Flash Block & Reset

Flash Block & Reset

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MSD 8GV

NAND FLASH

(HY27US08121B-TPCB)

PCM_A0

PCM_A1

PCM_A2

PCM_A3PCM_A4

PCM_A5

PCM_A6

PCM_A7

F_RBZ

/PF_OE

/PF_CE0

/PF_CE1

PF_ALE

/PF_WE

RB

RE

CE

CLE

ALE

WE

I/O 0

I/O 1

I/O 2

I/O 3

I/O 4

I/O 5

I/O 6

I/O 7

8

PCM_A[0-7]

WP PF_AD15

/F_RB

/PF_OE

/PF_CE0

/PF_CE1

PF_ALE

/PF_WE

PF WP

Reset Switch

Reset IC(MAX809RTR)

S5/S6_ResetHWRESET

+3.3V

+3.3V


I2C Block

I2C Block

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MSD 8GV

TUNER

(TDVJ- H031F)

LHSYNC2/RX1

LVSYNC2/TX1

UART2_TX/SCKM

UART2_RX/SDAM

GPIO 60

GPIO 62

100 ohm

100 ohm

+5V_Gen.

4.7kohm

4.7kohm

+3.3V_TU

3.3kohm

3.3kohm

0 ohm

0 ohm

+3.3V_Nor.

3.3kohm

3.3kohm

EEPROM(AT24C512BW)

IC104

33 ohm

33 ohm

0 ohm

0 ohm

+3.3V_Nor

1.2kohm

1.2kohm

0 ohm

0 ohm

FE_TUNER_SCL/SDA

OPT

EEPROM_SCL/SDALGDT3305

FE_DEMOD_SCL/SDADDCR_CK

DDCR_DA

0 ohm

0 ohm

22 ohm

22 ohmSCL0/SDA0

+5V_Gen.

1.2kohm

1.2kohm

SCL1/SDA1

AUDIO AMP(NTP3100L)SCL/SDA_SUB/AMP

EEPROM(CAT24WC08W)IC105

22 ohm

22 ohm

EEPROMAT24C02BN8

IC1105

22 ohm

2 ohmRGB_DDC_SCL/SDA

+5V_Gen.

4.7k

ohm

4.7k

ohm

DDCA_CK

DDCA_DA


GPIO Block

GPIO Block

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MSD 8GV

DSUB_DET

ET_RXD1

5V_HDMI_1GPIO 86

GPIO 88AMP_RST

AUDIO AMP( NTP3100L)

COMP1_DETET_RXD0

AV_CVBS_DETET_TXD0

SIDEAV_DET

ET_TXD1

RS232C(MAX3232CDR)

UART_RX2DBG_RX

UART_TX2DBG_TX

5V_HDMI_4GPIO 84

GPIO 98AMP_MUTE

P403 or P402( POWER WAFER)

PWM2PWM_DIM

A_DIMPWM0

NTP_MUTE

SAR3 SB_MUTE D102

(Stand-by GPIO)

VSB IC(LGDT3305)

VSB_RESETET_MDIO

USB_DM2USB_DM

USB_DP2USB_DP JK1204

(USB JACK)

INT_CTLGPIO 136

Error_DET

RL_ONGPIO 134

GPIO 97

KEY1

KEY2

SAR0

SAR1

IRIRIN


MSD3368 GPIO Block

MSD3368 GPIO Block

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Pin Number Pin Name GP1.5 Signal Name(Ver3) Pin Number Pin Name GP1.5 Signal Name(Ver3)

1 HWRESET D4 S5/S6_Reset 72 TS1_CLK AA19 OPT73 TS1_VLD AC19 OPT

34 UART2_TX_SCKM F8 EEPROM_SCL 74 TS1_SYNC AA20 OPT

35 UART2_RX/SDAM D11 EEPROM_SDA 75 TS1_D0 AB19 OPT

36 DDCR_DA AB21 SDA0 76 TS0_CLK AB4 TS_CLK

37 DDCR_CK AC21 SCL0 77 TS0_VLD AD5 TS_VAL ID

78 TS0_SYNC AC4 TS_SYNC

38 DDCA_CLK J1 ISP_RXD

39 DDCA_DA J2 ISP_TXD 79 GPIO43/PCM2_IRQA_N AF10 OPT

40 UART_RX2 W5 DBG_RX 80 GPIO42/PCM2_CE_N AF5 TUNER RESET

41 UART_TX2 V5 DBG_TX 81 UART1_TX/GPIO87 B6 5V_HDMI_DET_2

82 UART1_RX/GPIO86 A6 5V_HDMI_DET_1

42 PWM0 AB13 PWM0 83 UART2_TX/GPIO85 F10 USB_OCD43 PWM1 AB12 PWM1 84 UART2_RX/GPIO84 F9 5V_HDMI_DET_4

44 PWM2 AD12 PWM2 85 GPIO79/LVSYNC2/TX1 C6 FE_TUNER_SDA

45 PWM3 AA13 PWM3 86 LVSYNC/GPIO133 AC18 OPC_EN

87 LHSYNC2/I2S_OUT_MUTE/RX1 E7 FE_TUNER_SCL

46 SAR0 A4 KEY1

47 SAR1 B4 KEY2 88 GPIO62/PCM2_CD_N/TX1 AA17 SCL1

48 SAR2 F4 LED_R/Buzz 89 GPIO60/PCM2_RESET/RX1 AA18 SDA1

49 SAR3 E4 SB_MUTE 90 GPIO132/LHSYNC/SPI_WPn AF11 Flash_WP_1

50 IRIN C4 IR 91 GPIO130/LCK AB17 Pow er on/off2-2

92 GPIO131/LDE/SPI_WPn1 AC17 Pow er on/off2-1

51 GPIO44 AC11 OPT 93 GPIO_PM6/ INT2/GPIO140 H6 POWER_DET

52 GPIO96 D9 OPT 94 GPIO_PM5/ INT1/GPIO139 G6 DBG_RX53 GPIO88 D10 AMP_RST 95 GPIO_PM4/GPIO138 F6 POWER_ON/OFF1

54 GPIO90/I2S_OUT_MUTE D7 HD 19/22LH 19LU,(FHD) 96 GPIO_PM3/GPIO137 H5 PANEL_CTL

55 GPIO91 E11 M oving LED,(Normal LED) 97 GPIO_PM2/GPIO136 G5 INV_CTL

56 GPIO97 E8 ERROR_OUT 98 GPIO_PM1/GPIO135 F5 DBG_TX

57 GPIO98 E10 NTP_MUTE 99 GPIO_PM0/GPIO134 E5 RL_ON

58 GPIO99 D6 +3.3V_ST,(OPT)

59 GPIO103/I2S_OUT_SD3 D5 BIT_SEL 100 USB_DP_2 AB10 .

60 GPIO102 C5 OLP 101 USB_DM_2 AC10 .

102 USB_DM_1 A5 SIDE_USB_DM

61 GPIO68 B8 HP_MUTE 103 USB_DP_1 B5 SIDE_USB_DP

62 GPIO67 A7 USB_CTL

63 ET_COL A11 SIDE_HP_MUTE 104 SPI_CK AD11 SPI_CK64 ET_MDIO B9 VSB_RESET, 105 /SPI_CS AE12 SPI_CS

65 ET_MDC A10 106 SPI_DO AF12 SPI_DO

66 ET_TX_EN B10 EEPROM_WP 107 SPI_DI AE11 SPI_DI

67 ET_RXD1 C9 DSUB_DET

68 ET_RXD0 C11 COMP1_DET

69 ET_TX_CLK A9 HP_DET 108 TESTPIN/GND E6 .

70 ET_TXD1 B11 SIDEAV_DET 109 XOUT A3 .

71 ET_TXD0 C10 AV_CVBS_DET 110 XIN B3 .


LVDS Block

LVDS Block

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MSD 8GV

P801(30pin)

LVDS Wafer

(HD, 60Hz)

LGD(19/22)

P802(30pin)

LVDS Wafer

(HD, 60Hz)

AUO(26/32)

LVDS TXA0+/-

LVDS TXA1+/-

LVDS TXA2+/-

LVDS TXAC+/-

LVDS TXA3+/-

LVDS TXA0+/-

LVDS TXA1+/-

LVDS TXA2+/-

LVDS TXAC+/-

LVDS TXA3+/-

Panel_Vcc(+5V)

Panel_Vcc(+12V)

LVA0 P/M

LVA1 P/M

LVA2 P/M

LVA3 P/M

LVA4 P/M


POWER Block (+3.5V_ST)_For 26 /32


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S5/S6 ResetP403 (#9~12),+3.3V_STIC103

MAX810RTR

(Reset)

+1.26V_VDDC

+1.8V_DDR

IC403MP2212DN(DCDC)3A


IC409NL17SZ08DFT2G

(OPT)Power_DET

+3.3V_AVDD_MPLL

Q7703

FDV301N(FET)

CEC_REMOTE

IC1201

MAX3232CDR(RS-232C)

+3.5V_STL404

IC100MSD3159GV

Main_SOC(S5)

IC1, IC2H5PS5162FFR-S6C

DDR2

IC1201

MAX3232CDR(RS-232C)


POWER Block (+24V & 12V &+12V/+15V)_For 26 /32

POWER Block (+24V & 12V &+12V/+15V)_For 26 /32

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P403

(#17,19,21)+12V

+5V_USB

+3.3V_Normal

IC401MP8706EN(DCDC)3A

IC405AOZ1073AIL

(DCDC)3A

IC409AOZ1073AIL

(DCDC)3A

R477

L402+12V

+12V/+15V

+5V_Normal

IC408NCP8 3SN 93

Power_DET

P403 (#2,4,3)IC408

NCP8 3SN 93

R469 IC600NTP-3100L

+24V

+24V

Power_DET

AMP_VCC

+24V/+15V

L407

Q409

AO3407A(FET)

PANEL_VCC

P800


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POWER Block (+5V_Noraml)_For 26 /32

POWER Block (+5V_Noraml)_For 26 /32

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IC7700~7702AT24C02BN

EDID EEPROM

IC1100TPA6110A2DGNRG4

HP AMP

IC1001

SC156515MLDO

+5V_Normal

+5V_Normal

L407

IC1105AT24C02BN

EDID EEPROM

+3.3V_PVSB

IC409AOZ1073AIL

(DCDC)3A

For HDMI

For RGB PC

IC1000

SC4215ISTRTLDO

+1.2V_PVSB

IC1004

LGDT3305VSD DEMOD

TU6600TDVJ-H031F

Tuner

+5V_TU

L1005

+3.3V_TU

L5003+5V_USB +5V_USBIC401

MP8706EN(DCDC)3A

IC1450AP2191SG-13

(OPC)

P2301

USB JACK




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S5/S6 ResetP402 (#5,6)+3.3V_STIC103

MAX810RTR

(Reset)

+1.26V_VDDC

+1.8V_DDR



IC409NL17SZ08DFT2G

(OPT)Power_DET

+3.3V_AVDD_MPLL

Q7703

FDV301N(FET)

CEC_REMOTE

IC1201

MAX3232CDR(RS-232C)

+3.5V_STL404

IC100MSD3159GV

Main_SOC(S5)

IC1, IC2H5PS5162FFR-S6C

DDR2

IC1201

MAX3232CDR(RS-232C)


POWER Block (+15V & +12V/+15V)_For 19 /22

POWER Block (+15V & +12V/+15V)_For 19 /22

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P402(#1,2)IC408

NCP8 3SN 93

IC600NTP-3100L

+15V

Q401

AO3407A(FET)

Power_DET+15V

L407

AMP_VCC

+5V_USB

+3.3V_Normal

IC401MP8706EN(DCDC)3A

IC405AOZ1073AIL

(DCDC)3A

IC409AOZ1073AIL

(DCDC)3A

R476

+12V/+15V

+5V_Normal

IC408

NCP8 3SN 93

Power_DET


POWER Block (+3.3V_Noraml)_For 19 /22


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IC105CAT24WC08WHDCP EEPROM

IC405AOZ1073AIL

(DCDC)3A

IC100MSD3159GV

Main_SOC(S5)

IC101

MX25L3205DM2ISerial Flash

IC1104

NL17SZ00DFT2GSPDIF

IC104

AT24C512BW

EEPROM

+3.3V_Normal

+3.3V_Normal

L407

IC102HY27US08121B

Flash

IC600

NTP3100LAMP

IC601

AZ1117H-1.8TRE1

LDO

+1.8V_AMPIC600

NTP-3100L

L5003

+3.3V_TU

IC5001AZ1117H-1.2TRE1

LDO

+1.26V

TU6600TDVJ-H031F

Tuner




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IC7700~7702AT24C02BN

EDID EEPROM

IC1100TPA6110A2DGNRG4

HP AMP

IC1001

SC156515MLDO

+5V_Normal

+5V_Normal

L407

IC1105AT24C02BN

EDID EEPROM

+3.3V_PVSB

IC409AOZ1073AIL

(DCDC)3A

Q409

AO3407A

(FET)

PANEL_VCC

P801,P802

For HDMI

For RGB PC

IC1000

SC4215ISTRTLDO

+1.2V_PVSB

IC1004

LGDT3305VSD DEMOD

L1005

+3.3V_TU

TU6600TDVJ-H031F

Tuner

+5V_TU

L5003+5V_USB +5V_USBIC401

MP8706EN(DCDC)3A

IC1450AP2191SG-13

(OPC)

P2301

USB JACK


LG_32LD350_LA04A

Documents

Transcript of LG_32LD350_LA04A