Service Manuals, User Guides, Schematic Diagrams or docs for : LG Monitor LG_50PC1DRA_50PC1DR_PA-61A_[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

>> Download LG_50PC1DRA_50PC1DR_PA-61A_[SM] documenatation <<

Text preview - extract from the document
                                CANADA : http//
                                USA    : http//
                                       : http//


                                            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
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


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

This is a representation of the front panel of models 50PC1DR, 50PC1DRA series TVs.
Here shown may be some what different from your TV.

Front Panel Controls

         Remote                  POWER GUIDE INPUT          MENU VOLUME               CHANNEL
         Control 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

This is the back panel of models 50PC1DR, 50PC1DRA series TVs.

Back Connection Panel
                                                                           S-VIDEO Input
            Cable CARD
                                                                           Provides better picture quality
                                                                 AV IN 2
                                                                           than the video input.
                                                                           AUDIO Input
       CableCARDTM                                                 R
                                                                           Connections are available for
       Used for                                                            listening to stereo sound from
       CableCARDTM                                                         an external device.
       Service                                                             VIDEO Input
       Provider.                                                           Connects the video signal from
                                                                           a video device.

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

                                                 - 5 -
                           DESCRIPTION OF CONTROLS

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.

                  Use for DVR record or trick play.
  mode control Controls the          mode.
               For further details, see the DVR section.
    VCR/DVD Control video cassette recorders or DVD players.
               Move the Listings Grid forward or backward in 24
               hour increments.

        MENU      Displays the main menu. Enters or exits a Panel
                  Menu in the TV Guide On Screen system.

    TV GUIDE      Displays the TV Guide On Screen system.
                  Enter to the       mode.

 THUMBSTICK Navigate the on-screen menus and adjust the system
  (Up/Down/Left settings to your preference.                                                               i

          EXIT Clear all on-screen displays and return to TV view-
               ing from any menu.

     REC LIST Display the thumbnail recorded list.
         MARK Enter the selected functions.

          INFO Display information at the top of the screen.

  VOLUME UP Increase/decrease the sound level.
         MUTE Switch the sound on or off.
                  Scroll through the programmed Favorite channels.

    CHANNEL Select available channels.
    UP/DOWN                                                                                      APM

    PAGE UP/ Move from one full set of screen information                       CC   AUTO DEMO M/C EJECT
  PAGE DOWN to the next one.
NUMBER button
                  Tune to the last channel viewed.
               Used to enter a program number for multiple
     -- (DASH) program channels such as 2-1, 2-2, etc.

                                                      - 6 -
                   DESCRIPTION OF CONTROLS

 POWER Turns your TV or any other programmed equipment on or off, depending on the mode.

 LIVE TV In AV 1-2, Component 1-2, RGB-DTV (or RGB-PC), HDMI1/DVI, and HDMI2 input sources, screen
         returns to the last TV channel.
  INPUT External input modes rotate in regular sequence: Antenna, 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
                                                      PIP Switches the sub picture PIP, POP, Twin
                                                          picture or off mode.

                                                  PIPCH- Changes the PIP channel.
                                                         Select the connected input source for the
                                               PIP INPUT sub-picture.
                                                            Exchange the main/sub images.
                                                          Select MTS sound: Mono, Stereo, and
                                                      SAP SAP
                                                          analog mode. Change the audio language
                                                          DTV mode.

    TIMER Select the amount of time                EZ PIC Adjust the factory preset picture depend
          before your TV turns off                        on the viewing environment.
                                                     APM Compare the Daylight, Normal, Night
                                                         Time and User1(or2) on the screen.
    RATIO Change the aspect ratio.
                                                            Select the appropriate type of sound for
         Adjust the screen                    EZ SOUND
  ADJUST position,size,and phase                            type of program.
         in PC mode.                                   CC Select closed caption.
                                                          (*In DTV/CADTV modes )

                                           - 7 -

                                      50PC1DR / 50PC1DRA                              42LB1DR / 42LB1DRA
        MODELS                      ( 50PC1DR-UA / 50PC1DRA-UA )                     ( 42LB1DR-UA / 42LB1DRA-UA )

With Stand: Width x Height
                                   (51.3/1302.6)x(34.3/872)x(14/355.8)            (46.3/1175.0)x(30.2/768)x(11.8/300)
           x Depth (inches/mm)
           Weight (pounds/kg)                 (117 / 53.1)                                      (90.4 / 41)

Without Stand: Width x Height
                                   (51.3/1302.6)x(31.9/810)x(4.3/108.7)           (46.3/1175.0)x(26.4/670)x(5.7/143.8)
           x Depth (inches/mm)
           Weight (pounds/kg)                  (97.7 / 44.3)                                      (71.4 / 32.4)

 Resolution                                                    1366 x 768 (Dot)
 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 Impedance                                            75 
 Operating Temperature Range                                    32-104

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