Service Manuals, User Guides, Schematic Diagrams or docs for : LG Monitor LG_42PX3DBV_42PX3DLV_AA-044F_[SM]

<< Back | Home

Most service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.




Image preview - the first page of the document
LG_42PX3DBV_42PX3DLV_AA-044F_[SM]


>> Download LG_42PX3DBV_42PX3DLV_AA-044F_[SM] documenatation <<

Text preview - extract from the document
                                                       CANADA : http//biz.lgservice.com
                                                       USA    : http//www.lgservice.com
                                                              : http//lgservice.com/techsup.html




PLASMA TV
SERVICE MANUAL
CHASSIS : AF-044C

MODEL : 42PX3DBV 42PX3DBV-UC
MODEL : 42PX3DLV 42PX3DLV-UC
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.




                        TV/AV   MENU   OK   VOL   PR
                                            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...............................................................14


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


EXPLODED VIEW PARTS LIST .........................................17


REPLACEMENT PARTS LIST ............................................18


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


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




                                                                               - 3 -
                         DESCRIPTION OF CONTROLS

Controls
- This is a simplified representation of front panel.
  Image shown may be somewhat different from your TV.




                                                 Front Panel Controls




                                                             TV/VIDEO     MENU    ENTER    VOL           CH




                                                                                                 CHANNEL (E,      D)    Buttons

                                                                                          VOLUME (F ,   G)    Buttons
                     Remote Control Sensor
                                                                                 ENTER Button
                                                                        MENU Button
                                                          TV/VIDEO Button
                                                 POWER Button
                                     Power Standby Indicator
                                     Illuminates red in standby mode, Illuminates
                                     green when the TV is turned on.




                                                        - 4 -
                                                      DESCRIPTION OF CONTROLS

Connection Options

                                                                                      Back Connection Panel




                                                                                                                                                                          S-VIDEO Input
                                                                                                                                                    A/V 2                 A connection available to provide better
                                                                                                                                                                          picture quality than the video input.




                                                                                                                                         S-VIDEO
                                                                                                                                                                          VIDEO Input




                                                                                                                                         VIDEO
                                                                                                                                                                          Connects the video signal from a video
                                                                                                                                                                          device.




                                                                                                                                         L / MONO
                                                                                                                                                                          AUDIO Input



                                                                                                                                         R AUDIO
                                                                                                                                                                          Use to connect to hear stereo sound
                                                                                                                                                                          from an external device.




                                            DVI Input/Audio Input/RGB                                                                                                                      S-Video Input
                                                                                                         DVD/DTV Input (Component                                                          Connect S-Video out from an
                                            Input
                                                                                                         1-2)                                                                              S-VIDEO device to the S-
                                            Connect the monitor output con-
                                                                                                         Connect a component                                                               VIDEO input.
Remote Control                              nector from a PC to the appro-
                                                                                                         video/audio device to these
Port                                        priate input port.
                                                                                                         jacks.
Connect your wired
remote control here.




                                 DIGITAL AUDIO
                                   (OPTICAL)
                                                                                                                 COMPONENT 2                        DVD
                                                                                                                                                    /DTV
                                                                                                                                                    INPUT     A/V
                                                                                                                 COMPONENT 1
                                                                                                                                                            INPUT 1               (MONO)                     Antenna
                    REMOTE                         DVI INPUT                      RGB INPUT          R     L                                                                                                 Analog/DTV
RS-232C INPUT                  DVI COMPONENT1                                                                                                                         R           L        VIDEO   S-VIDEO
(CONTROL/SERVICE)   CONTROL   INPUT INPUT OUTPUT   (PC/DTV INPUT)   AUDIO INPUT   (PC/DTV INPUT)                                                                                                                          AC INPUT
                                                                                                   AUDIO INPUT                 VIDEO INPUT                                AUDIO




                  Digital Audio (DVI: Digital Visual
                                                                                                                                                       Antenna Inputs
                     Interface/Component1) Input/                                                       Audio/Video Input 1
                                                                                                                              Connect cable or antenna signals to the
                               Digital Audio Output                                                  Connect audio/video out-
                                                                                                                              TV, either directly or through your cable
           Connect digital audio from various types                                                      put from an external
                                                                                                                                                                   box.
              of equipment. Note: In standby mode,                                                     device to these jacks.
                            these ports will not work.
  RS-232C INPUT                                                                                                                                                          Power Cord Socket
  (CONTROL/SERVICE) PORT                                                                                                               This TV operates on an AC power. The voltage is indi-
  Connect to the RS-232C port                                                                                                        cated on the Specifications page. Never attempt to oper-
  on a PC.                                                                                                                                                          ate the TV on DC power.




                                                                                                               - 5 -
                             DESCRIPTION OF CONTROLS

Remote Control Key Functions
- When using the remote control, aim it at the remote control sensor on the TV.




                         COMP/RGB/DVI
     Selects: Component 1-2, RGB-DTV (or
     RGB-PC), DVI-DTV (or DVI-PC) input
                                sources.               COMP/RGB/DVI                      TV/VIDEO
                                                                                                    TV/VIDEO
                                                                                                    External input modes rotate in regular
                                                                                                    sequence: Antenna, Cable, Video, Front
                                                                            MODE                    Video, Component 1-2 and RGB-DTV (or
                                    MODE                                                            RGB-PC) input sources.
   Selects the remote operating mode: TV,                                                           (Video, Front Video, Component 1-2 input
 DVD, VCR, AUDIO, CABLE or STB. Select                                                              sources are linked automatically, only if
   a mode other than TV, for the remote to                                                          these are connected )
                operate an external device.
                                                                            INFO




                                    MENU
                                                                                                    RATIO
    Brings up the main menu to the screen.
                                                                                                    Changes the aspect ratio.


                                                          EXIT
                                                                      SAP                  CC
                                       EXIT                                    TIMER                TIMER
Clears all on-screen displays and returns to                                                        Lets you select the amount of time before
                 TV viewing from any menu.                                                          your TV turns itself off automatically.
                                                                               SURF


                                    SAP
    Selects MTS sound: Mono, Stereo, and                                                            SURF
    SAP in Analog mode. Change the audio                                                            Scrolls the Favorite channels.
                   language in DTV mode.


                                    MUTE                                                FLASHBK
                                                                                                    FLASHBK
               Switches the sound on or off.                                                        Tunes to the recent channels.
                                                                                   XD    FREEZE




                                     EZ PIC                                                         FREEZE
      Selects a factory preset picture mode                                                         Freezes the currently-viewed picture.
    depending on the viewing environment.                                                           Main picture is frozen.




                                                                      - 6 -
                                DESCRIPTION OF CONTROLS

                                  POWER
   Turns your TV or any other programmed
  equipment on or off, depending on mode.             COMP/RGB/DVI                      TV/VIDEO   VCR/DVD BUTTONS
                                                                                                   



◦ Jabse Service Manual Search 2020 ◦ Jabse Pravopis ◦ Other service manual resources online : FixyaeServiceinfo