COLOR MONITOR SERVICE MONITOR SERVICE MANUAL Website: E-mail: CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

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  • MAIN

    COLOR MONITORSERVICE MANUAL

    Website:http://biz.LGservice.comE-mail:http://www.LGEservice.com/techsup.html

    CAUTIONBEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

    CHASSIS NO. : CL-49

    MODEL: L3020T (L3020AL-AL**T)L3020A (L3020AL-AL**A, AG**A)

    ( ) **Same model for Service

  • 1. LCD CHARACTERISTICSType : TFT Color LCD ModuleSize : 30inch Pixel Pitch : 0.5025 x 0.1675 x RGBColor Depth : 8-bit, 16,777,216 colorsElectrical Interface : LVDSActive Display Area : 643.2mm x 385.92mm -LPL Module

    : 683.6mm x 433.6mm -CMO ModuleSurface Treatment : Anti-Glare, Hard Coating(3H) -LPL Module

    : Anti-Glare, Hard Coating(2H) -CMO ModuleOperating Mode : Normally Black, TransmissiveBacklight Unit : 16-CCFL (Cold Cathode

    Fluorescent Lamp)

    2. OPTICAL CHARACTERISTICS2-1. Viewing Angle by Contrast Ratio 10

    Left : -80 min., -85(Typ) Right : +80 min., +85(Typ)Top : +80 min., +85(Typ)Bottom : -80 min., -85(Typ)

    2-2. Luminance : 380(min), 450(Typ) -LPL Module450(min), 500(Typ) -CMO Module

    2-3. Contrast Ratio : 280(min), 350(Typ) -LPL Module500(Typ) -CMO Module

    3. SIGNAL (Refer to the Timing Chart)3-1. PC & Video Input

    1)Signal Input : S-video,RCA, Component2)Input Form : D-SUB Analog, DVI-D,V1(CVBS)

    V2(SVHS), DVD(Ycbcr),HDTV(YPbPr),TV-NTSC(Opion)

    3)Resolution(max) : Analog -1280 x 1024Digital -1280 x 1024

    3-2. Audio Signal1) Input: PC : 700mVrms

    AV : 450mVrms2) Output: PC : 8W

    AV : 8W3-3. Sync Input

    Horizontal : 30 ~ 66kHz(Digital: 30~63kHz)Vertical : 56 ~ 85Hz Input Form : Separate, TTL,

    Positive/Negative Digital

    4. POWER SUPPLY

    4-1. Power AdaptorInput : AC 100~240V, 50/60Hz , 2.0AOutput : DC 5V 0.9A, DC12V 1.5A

    DC18V 1.0A, DC24V 5.0A4-2. Power Consumption

    5. ENVIRONMENT

    6-1. Operating Temperature: 10C~35C (50F~95F)

    6-2. Operating Humidity : 10%~80%

    6-3. MTBF : 50,000 Hours(Min.)

    6. DIMENSIONS (with TILT/SWIVEL)

    Width : 734 mm (28.90'')Height : 538 mm (21.18'')Depth : 191 mm (7.52'')

    7. WEIGHT (with TILT/SWIVEL)

    LPL ModuleNet. Weight : 16.4kg (36.16 lbs) Gross Weight : 21.7kg (47.84 lbs)

    CMO ModuleNet. Weight : 17kg (37.48 lbs) Gross Weight : 22.5kg (49.61 lbs)

    CONTENTS

    SPECIFICATIONS

    - 2 -

    SPECIFICATIONS ................................................... 2PRECAUTIONS ....................................................... 4TIMING CHART ....................................................... 5OPERATING INSTRUCTIONS ................................ 6WIRING DIAGRAM ............................................... 10BLOCK DIAGRAM ................................................. 12DESCRIPTION OF BLOCK DIAGRAM...................13

    ADJUSTMENT ...................................................... 14

    TROUBLESHOOTING GUIDE .............................. 16

    EXPLODED VIEW...................................................23

    REPLACEMENT PARTS LIST ...............................25

    PIN CONFIGURATION............................................35

    SCHEMATIC DIAGRAM......................................... 37

    MODE

    POWER ON (NORMAL)

    STAND-BY

    SUSPEND

    POWER OFF

    CUT-OFF SWITCHOFF

    H/V SYNC

    ON/ON

    OFF/ON

    ON/OFF

    OFF/OFF

    -

    POWER CONSUMPTION

    less than 160 W

    less than 5 W

    less than 5 W

    less than 5 W

    less than 1 W

    LED COLOR

    GREEN

    AMBER

    AMBER

    AMBER

    OFF

    VIDEO

    ACTIVE

    OFF

    OFF

    OFF

    -

  • - 3 -

    Signal Connector Pin Assignment

    Pin Signal (DVI-D)123456789101112131415

    T. M. D. S. Data2-T. M. D. S. Data2+T. M. D. S. Data2/4 ShieldT. M. D. S. Data4-T. M. D. S. Data4+DDC ClockDDC DataAnalog Vertical Sync.T. M. D. S. Data1-T. M. D. S. Data1+T. M. D. S. Data1/3 ShieldT. M. D. S. Data3-T. M. D. S. Data3++5V PowerGround (return for +5V, H. Sync. and V. Sync.)

    Pin Signal (DVI-D)

    1 89

    17 2416

    161718192021222324

    Hot Plug DetectT. M. D. S. Data0-T. M. D. S. Data0+T. M. D. S. Data0/5 ShieldT. M. D. S. Data5-T. M. D. S. Data5+T. M. D. S. Clock ShieldT. M. D. S. Clock+T. M. D. S. Clock-

    T. M. D. S. (Transition Minimized Differential Signaling)

    DVI-D Connector (Digital)

  • - 4 -

    WARNING FOR THE SAFETY-RELATED COMPONENT.

    There are some special components used in LCDmonitor that are important for safety. These parts aremarked on the schematic diagram and thereplacement parts list. It is essential that these criticalparts should be replaced with the manufacturersspecified parts to prevent electric shock, fire or otherhazard.

    Do not modify original design without obtaining writtenpermission from manufacturer or you will void theoriginal parts and labor guarantee.

    TAKE CARE DURING HANDLING THE LCD MODULEWITH BACKLIGHT UNIT.

    Must mount the module using mounting holes arrangedin four corners.

    Do not press on the panel, edge of the frame stronglyor electric shock as this will result in damage to thescreen.

    Do not scratch or press on the panel with any sharpobjects, such as pencil or pen as this may result indamage to the panel.

    Protect the module from the ESD as it may damage theelectronic circuit (C-MOS).

    Make certain that treatment person s body aregrounded through wrist band.

    Do not leave the module in high temperature and inareas of high humidity for a long time.

    The module not be exposed to the direct sunlight.

    Avoid contact with water as it may a short circuit withinthe module.

    If the surface of panel become dirty, please wipe it offwith a softmaterial. (Cleaning with a dirty or rough clothmay damage the panel.)

    WARNING

    BE CAREFUL ELECTRIC SHOCK !

    If you want to replace with the new backlight (CCFL) orinverter circuit, must disconnect the AC adapterbecause high voltage appears at inverter circuit about650Vrms.

    Handle with care wires or connectors of the invertercircuit. If the wires are pressed cause short and mayburn or take fire.

    PRECAUTION

    CAUTIONPlease use only a plastic screwdriver to protect yourselffrom shock hazard during service operation.

  • TIMING CHART

    - 5 -

    VIDEO

    SYNC

    B

    D

    CF

    E

    A

    >

    H + 31.469 800 640 16 96 48

    V 70.8 449 350 37 2 60

    H 43.269 832 640 56 56 80

    V 85.0 509 480 1 3 25

    H 31.469 800 640 16 96 48

    V 59.94 525 480 10 2 33

    H 37.5 840 640 16 64 120

    V 75 500 480 1 3 16

    H 31.468 900 720 18 108 54

    V + 70.8 449 400 12 2 35

    H + 37.879 1056 800 40 128 88

    V + 60.317 628 600 1 4 23

    H + 46.875 1056 800 16 80 160

    V + 75.0 625 600 1 3 21

    H + 53.674 1048 800 32 64 152

    V + 85.061 631 600 1 3 27

    H +/ 49.725 1152 832 32 64 224

    V +/ 74.55 667 624 1 3 39

    H 48.363 1344 1024 24 136 160

    V 60.0 806 768 3 6 29

    H 60.123 1312 1024 16 96 176

    V 75.029 800 768 1 3 28

    H + 63.981 1688 1280 48 112 248

    V + 60.02 1066 1024 1 3 38

    H + 47.7 1680 1280 66 134 200

    V + 60 795 768 1 3 23

    Mode H/VSort

    1

    2

    3

    4

    5

    6

    7

    8

    9

    10

    11

    12

    13

    25.175

    28.321

    25.175

    31.5

    36.0

    40.0

    49.5

    56.25

    57.283

    65.0

    78.75

    108.0

    80.14

    640x35070Hz

    640x48085Hz

    640x48060Hz

    640x48075Hz

    720x40070Hz

    800x60060Hz

    800x60075Hz

    800x60085Hz

    832x62475Hz

    1024x76860Hz

    1024x76875Hz

    1280x102460Hz

    1280x76860Hz

    Sync Polarity Frequency

    DotClock

    Total Period(E)

    Video Active Time(A)

    Sync Duration(D)

    Back Porch(F)

    Front Porch(C)

    Resolution

  • - 6 -

    FRONT VIEW

    REAR VIEW CONNECTOR PANEL

    REAR VIEW

    OPERATING INSTRUCTIONS

    Front Control Panel(P7)

    RS-232C EXT.

    RS-232C EXT.

    Theft preventionlocking device

    Theft preventionlocking device

    BackCap

    1.RS-232C Terminal: The RS-232C protocol is used for communicationbetween the PC and monitor. You can turn themonitor on/off, seslect an input source or adjust theOSD menu from your PC.The cable for RS-232C terminal connection is not an accessory included in the product. Please purchase the cable.

    2. DVI Digital Signal Connector3. D-SUB Analog Signal Connector 4. TV Tuner Jack: Connect the antenna.

    -L3020T(Option)5. Connect the power cord6. Speaker Terminal: Connect the speaker

    PC Audio Input Terminal-Connect the audio cable

    to the LINE OUT jack in thePC sound card

    Headphone/earphoneConnection Terminal

    S-Video Input Terminal

    AV Output Terminal(Audio)

    DVD Input Terminal

    AV Input Terminal(Audio)

    AV Output Terminal(Video)AV Input Terminal(Video)

    HDTV Input TerminalMAIN

  • - 7 -

    OPERATING INSTRUCTIONS

    Front Control Panel

    MAIN

    MAIN

    72

    1568 3 4

    Press the button to turn on the power. Press the button again to turn it off.

    The power LED will be on when power is on.

    Power Button

    Power (DPMS)Indicator

    Adjust the volume

    Adjust brightness and contrast. Press the Menu button to hide the screen

    Use this button toshow/hide the OSD(on Screen Display) menu screen.MENU Button

    Use the button to select an icon or adjust the setting in the OSD screen .OSD Buttons

    [For DSUB signal] Select the icon to adjust on the OSD screen. If you press the [AUTO/SELECT] button,

    automatic screen adjustment will be started.