Service Manuals, User Guides, Schematic Diagrams or docs for : LG Monitor LG_42PC1DA_PA-61B_[SM]

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LG_42PC1DA_PA-61B_[SM]


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                                CANADA : http//biz.lgservice.com
                                USA    : http//www.lgservice.com
                                       : http//biz.lgservice.com




PLASMA TV
SERVICE MANUAL
CHASSIS : PA-61B

MODEL : 42PC1DA 42PC1DA-UB
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
                                            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 Replacement Parts List.
 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.



General Guidance                                                      Leakage Current Hot Check (See below Figure)
                                                                      Plug the AC cord directly into the AC outlet.
An lsolation Transformer should always be used during                 Do not use a line Isolation Transformer during this check.
the servicing of a receiver whose chassis is not isolated from        Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor
the AC power line. Use a transformer of adequate power rating         between a known good earth ground (Water Pipe, Conduit, etc.)
as this protects the technician from accidents resulting in           and the exposed metallic parts.
personal injury from electrical shocks.                               Measure the AC voltage across the resistor using AC
                                                                      voltmeter with 1000 ohms/volt or more sensitivity.
It will also protect the receiver and it's components from being      Reverse plug the AC cord into the AC outlet and repeat AC
damaged by accidental shorts of the circuitary that may be            voltage measurements for each esposed metallic part. Any
inadvertently introduced during the service operation.                voltage measured must not exceed 0.75 volt RMS which is
                                                                      corresponds to 0.5mA.
If any fuse (or Fusible Resistor) in this monitor is blown, replace   In case any measurement is out of the limits sepcified, there is
it with the same specified type.                                      possibility of shock hazard and the set must be checked and
                                                                      repaired before it is returned to the customer.
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.          Leakage Current Hot Check circuit
                                                                                            AC Volt-meter

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.                                                     Good Earth Ground
Place the AC switch in the on positioin, connect one lead of                                                    such as WATER PIPE,
ohm-meter to the AC plug prongs tied together and touch other            To Instrument's                        CONDUIT etc.
ohm-meter lead in turn to each exposed metallic parts such as                                     0.15uF
                                                                         exposed
antenna terminals, phone jacks, etc.                                     METALLIC PARTS
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                                  1.5 Kohm/10W
reading must be infinite.
An other abnormality exists that must be corrected before the
receiver is returned to the customer.
                                                                      CANADA: LG Electronics Canada, Inc. 550 Matheson
                                                                              Boulevard East Mississauga, Ontario L4Z 4G3

                                                                      USA      : LG Customer Interactive Center
                                                                                  P.O.Box 240007, 201 James Record Road Huntsville,
                                                                                  AL 35824
                                                                                  Digital TV Hotline 1-800-243-0000




                                                                 - 2 -
                                                       TABLE OF CONTENTS

DESCRIPTION OF CONTROLS ...........................................4


SPECIFICATIONS.................................................................8


ADJUSTMENT INSTRUCTIONS ..........................................9


BLOCK DIAGRAM...............................................................17


EXPLODED VIEW...............................................................30


EXPLODED VIEW PARTS LIST .........................................31


REPLACEMENT PARTS LIST ............................................32


SCHEMATIC DIAGRAM..........................................................


PRINTED CIRCUIT BOARDS .................................................




                                                                               - 3 -
                         DESCRIPTION OF CONTROLS


CONTROLS
This is a representation of the front panel of models 42PC1DA series TVs.
Here shown may be somewhat different from your TV.



Front Panel Controls




                                         TV GUIDE INPUT    MENU         VOL     CH




                                          TV
          Remote Control           POWER GUIDE INPUT MENU VOLUME              CHANNEL
          Sensor                   Button Button Button Button (F,G)Buttons   (E,D)Buttons

  Power Standby Indicator
  Illuminates red in stand-
  by mode.
  When the TV is turned
  on, the indicator blinks
  white and then illumi-
  nates white before the
  picture is displayed.




                                                - 4 -
                                       DESCRIPTION OF CONTROLS

CONNECTION OPTION
This is a back panel of 42PC1DA.

Back Connection Panel
                                                                                                                 S-VIDEO Input
                                                                                                                 Provides better picture quality than
                                                                                                                 the video input.
                                                                                                                 AUDIO Input
      Cable CARD
                                                                                                                 Connections are available for listen-
                                                                                                                 ing to stereo sound from an external
                                                                                                                 device.
    CableCARDTM                                                                                                  VIDEO Input
    Used for                                                                                                     Connects the video signal from a
                                                                  10
    CableCARDTM                                                                                                  video device.
    Cable Service
                                                                                    AV OUT
    Provider.
                                                                   1

                                                                   2                  (MONO)
                                                                                                                                                 3
                                                                            VIDEO       AUDIO          S-VIDEO    VIDEO               AUDIO
                                                                                      AV IN 1                      COMPONENT IN


                                                                                                     7

                                                                                                   ANTENNA
                                                                                                      IN
                               4              5               6                                                           8             9

                                                                                                                     RGB IN         REMOTE
                                                                                                    CABLE                           CONTROL IN
                            HDMI IN     DIGITAL AUDIO    RS-232C IN                                   IN
                                             OUT      (CONTROL & SERVICE)
                                                                                                                  AUDIO (RGB/DVI)

                               2          OPTICAL

                                                                                                                   RGB (PC/DTV)
                                                                                                                       (PC/
                             1 (DVI)




1   AV OUT                                                                                     6         RS-232C IN (CONTROL & SERVICE) PORT
    Connect a second TV or monitor.                                                                      Connect to the RS-232C port on a PC.
2   AV (Audio/Video) IN 1                                                                      7         ANTENNA IN
    Connect audio/video output from an external                                                          Connect over-the air signals to this jack.
    device to these jacks.                                                                               CABLE IN
    S-VIDEO                                                                                              Connect cable signals to this jack.
    Connect S-Video out from an S-VIDEO device.
                                                                                               8         RGB/AUDIO IN
3   COMPONENT IN                                                                                         Connect the monitor output from a PC to the
    Connect a component video/audio device to these                                                      appropriate input port.
    jacks.
                                                                                               9         Remote Control Port
4   HDMI IN                                                                                              Connect your wired remote control.
    Connect a HDMI signal to 1(DVI) or 2.
    Or DVI(VIDEO)signal to the 1(DVI) port with a DVI                                          10        Power Cord Socket
    to HDMI cable.                                                                                       For operation with AC power.
                                                                                                         Caution:
5   DIGITAL AUDIO OUT                                                                                    Never attempt to operate the TV on DC power.
    Connect digital audio from various types of equipment.
    Note: In standby mode, these ports do not work.




                                                                                      - 5 -
                            DESCRIPTION OF CONTROLS


REMOTE CONTROL KEY FUNCTIONS
When using the remote control, aim it at the remote control sensor on the TV.

         MODE Select the remote operating mode: TV, DVD, VCR,
              AUDIO, CABLE or STB.                                           TV INPUT                           INPUT
                                                                                            POWER
      VCR/DVD Control video cassette recorders or DVD players.
 control buttons                                                                 TV
                                                                                              DVD
                                                                                                                 VCR
                                                                                             MODE
    DAY+/DAY- Move the Listings Grid forward or backward in 24                               CABLE               STB
                 hour increments.                                               AUDIO



         MENU Displays the main menu. Enters or exits a Panel
              Menu in the TV Guide On Screen system.
                                                                                DAY -                           DAY+
                                                                                             INFO i
          INFO Display information at the top of the screen.                    MENU
                                                                                                              TV GU
                                                                                                                     IDE


     TV GUIDE Displays the TV Guide On Screen system.
                                                                                             ENTER
 THUMBSTICK Navigate the on-screen menus and adjust the sys-
  (Up/Down/Left
  Right/ENTER) tem settings to your preference.
                                                                                EXIT
           EXIT Clear all on-screen displays and return to TV view-                      SAP          CC        RAT
                                                                                                                      IO
                ing from any menu.
                                                                                                   PAGE

           SAP     Analog mode: Selects MTS sound(Mono, Stereo, and a SAP)
                   DTV mode: Change the audio language.                         VOL      MUTE        FAV          CH


                                                                                                   PAGE
            CC Select a closed caption.
               (*In DTV/CADTV mode
                                                                                  1              2               3
         RATIO Change the aspect ratio.                                           4              5               6

  VOLUME UP Increase/decrease the sound level.                                    7              8               9
      /DOWN
                                                                                                 0            FLASHBK
         MUTE Switch the sound on or off.

           FAV Scroll through the programmed Favorite channels.

     CHANNEL Select available channels.                                                              APM
     UP/DOWN
                                                                                        AUTO DEMO M/C EJECT
    PAGE UP/ Move from one full set of screen information to the                 CC

  PAGE DOWN next one.
 NUMBER but-
     -- (DASH) Used to enter a program number for multiple pro-
               gram channels such as 2-1, 2-2, etc.

     FLASHBK Tune to the last channel viewed.




                                                       - 6 -
                        DESCRIPTION OF CONTROLS

 POWER Turns your TV or any other
       programmed equipment on or
       off, depending on the mode.
            In AV 1-2, Component 1-2,
TV INPUT
            RGB-DTV (or RGB-PC),
            HDMI1/DVI, and HDMI2 input
            sources, screen returns to the
            last TV channel.
        External input modes rotate in
        regular sequence: Antenna,
  INPUT
        Cable, AV1-2, Component 1-
        2, RGB-DTV (or RGB-PC),
        HDMI1/DVI and HDMI2 (AV 1-
        2, Component 1-2, RGB-DTV
        (or RGB-PC), HDMI1/DVI,
        and HDMI2 input sources are
        linked automatically, only if
        these are connected ).




 Inside the Sliding Cover
     TIMER Select the amount of time before your TV turns off auto-
           matically.
       APM Compare the Daylight, Normal, Night Time and
           User1(or2) on the screen.

   ADJUST Adjust the screen position,size,and phase in PC mode.


            7               8              9
                                                               PIP Switches the sub picture PIP, POP, Twin
                                                                   picture or off mode.
                            0          FLASHBK
                                                           PIPCH- Changes the PIP channel.
                                                          /PIPCH+
           PIP   PIP CH -       PIP CH + PIP INPUT
                                                                   Select the connected input source for the
                                                        PIP INPUT sub-picture.
        TIMER     APM           ADJUST    SWAP
                                                                     Exchange the main/sub images.
        EZ PIC   EZ SOUND                                    SWAP
                                                                    Adjust the factory preset picture depend
                                                             EZ PIC on the viewing environment.
                                                                Select the appropriate type of sound for
                                                       EZ SOUND type of program.




                                                     - 7 -
                                           SPECIFICATIONS

                                                                                 42PC1DA
                      MODELS
                                                                               (42PC1DA-UB)

                               including stand                           44.4 x 29.5 x 15.0 inches
  Dimensions                                                            1129.0 x 748.5 x 380.0 mm
  (Width x Height x Depth)     excluding stand                            44.4 x 27.4 x 4.1 inches
                                                                        1129.0 x 695.0 x 103.7 mm


  Weight                       including stand                             61.1 pounds / 27.7 kg
                               excluding stand                             53.4 pounds / 24.2 kg


  Power requirement                                                       AC100-240V ~ 50/60Hz
  Television System                                                   NTSC-M, ATSC, 64 & 256 QAM
  Program Coverage                                     VHF 2-13, UHF 14-69, CATV 1-135, DTV 2-69, CADTV 1-135
  External Antenna                                                                75 ohm
  Impedance
                               Operating Temperature                      32 ~ 104



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