Service Manuals, User Guides, Schematic Diagrams or docs for : LG Monitor LG_42PC5D_[SM]

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LG_42PC5D_[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-73E

MODEL : 42PC5DC                      42PC5DC-UC
MODEL : 42PC5D                       42PC5D-UC
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
                                                       TABLE OF CONTENTS

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


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


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


TROUBLESHOOTING GUIDE ............................................19


PRINTED CIRCUIT BOARDS .............................................24


BLOCK DIAGRAM...............................................................27


EXPLODED VIEW...............................................................32


EXPLODED VIEW PARTS LIST .........................................33


REPLACEMENT PARTS LIST ............................................34


SCHEMATIC DIAGRAM..........................................................
                           DESCRIPTION OF CONTROLS


   FRONT PANEL INFORMATION
   Here shown may be somewhat different from your TV.




    Front Panel Controls


   Plasma TV Model




                                                                            Remote Control Sensor
                                                             Power Standby Indicator
                                                             Illuminates red in standby mode.
                                                             When the TV is turned on, the indica-
                                                             tor blinks green and then illuminates
                                                             green before the picture is displayed.




INPUT   MENU     ENTER           VOL              CH
                         INPUT      MENU        ENTER        VOL                  CH



               POWE
               R           INPUT       MENU       ENTER    VOLUME              CHANNEL
               Button      Button      Button     Button   (F,G)Buttons        (E,D)Buttons
                         DESCRIPTION OF CONTROLS


BACK PANEL INFORMATION
Back Connection Panel

Plasma TV Model




                                                                                                          R
                                                                       AV IN 2
                                                                                           S-VIDEO Input




                                                      S-VIDEO
                                                                                           Provides better picture quality than the video
                                                                                           input.


                                                      VIDEO L/MONO AUDIO R
                                                                                           AUDIO Input
                              11                                                           VIDEO Input
                                                                                           Connects the video signal from a video device.


         10              SERVICE               7




                                                                                                                                   COMPONENT IN AV OUT AV IN 1
                                                                                                      VIDEO                AUDIO
                                             RGB IN
                                              (PC)                                                                                                               1
                                   6
                  4
                              HDMI IN    AUDIO IN  REMOTE                                 8
                                        (RGB/DVI) CONTROL IN
              ANTENNA/    2                                                                                                                                      2
              CABLE IN
                                                                                 (    )
                          1                                                               OPTICAL
                                            RS-232C IN                               DIGITAL AUDIO                     (MONO)                                    3
                          HDMI/DVI IN   (CONTROL & SERVICE)                               OUT        S-VIDEO   VIDEO       AUDIO



                                                9                                             5




                                                                                 (    )




                                                                                                                       (     )
                           DESCRIPTION OF CONTROLS

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


                                                                            TV INPUT                           INPUT
         MODE Select the remote's operating mode. Defaults to LG                            POWER
              codes, refer to page 70 to reprogram.
                                                                                              DVD
                                                                                 TV                            VCR
                                                                                             MODE
     VCR/DVD Control video cassette recorders or DVD players.
                                                                                             CABLE
control buttons                                                                 AUDIO                          STB



         MENU Displays the main menu.

   BRIGHT -/ + Adjust the brightness on screen.
                                                                                             MENU           BRIG
                                                                                    HT -                        HT +
                                                                                BRIG
 THUMBSTICK Navigate the on-screen menus and adjust the sys-
  (Up/Down/Left
  Right/ENTER) tem settings to your preference.
                                                                                             ENTER
           EXIT Clear all on-screen displays and return to TV view-
                ing from any menu.

                                                                                EXIT                               INK
         TIMER Select the amount of time before your TV turns off                       TIMER               SIMPL
                                                                                                      RATIO
               automatically.

         RATIO Change the aspect ratio.
                                                                                VOL        MUTE       FAV       CH
     SIMPLINK C?

  VOLUME UP Increase/decrease the sound level.                                     1              2            3
      /DOWN
         MUTE Switch the sound on or off.                                          4              5            6

           FAV Scroll through the programmed Favorite channels.                    7              8            9
                                                                                                  0         BACK
     CHANNEL Select available channels.
     UP/DOWN
 NUMBER but-
         ton
   -- (DASH) Used to enter a program number for multiple pro-
             gram channels such as 2-1, 2-2, etc.

         BACK Tune to the last channel viewed.



               Illuminates the remote control
         LIGHT buttons of selected mode.
                        DESCRIPTION OF CONTROLS

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



Inside the Sliding Cover
                                         PICTURE Selects the factory preset picture depend
                                                 on the viewing environment.
         1              2          3       SOUND Selects the factory preset sound for type of
                                                 program.
         4              5          6
                                              SAP    Analog mode: Selects MTS sound (Mono,
         7              8          9                 Stereo, or a SAP)
                                                     DTV mode: Changes the audio language.
                        0         BACK         CC Select a closed caption.
                                                  (*In DTV/CADTV mode )
      PICTURE   SOUND       SAP    CC
                                          ADJUST Adjust the screen resolution, position, size
      ADJUST                                     and phase.
                                     SPECIFICATIONS

                                                                42PC5D                           50PC5D
                    MODELS
                                                              (42PC5D-UC)                      (50PC5D-UC)

                            Including stand           41.3 x 30.2 x 12.2 inches        48.9 x 34.9 x 14.6 inches
Dimensions                                           1048.0 x 766.0 x 310.0 mm        1242.0 x 887.6 x 370.0 mm
(Width x Height x Depth)    Excluding stand           41.3 x 28.1 x 3.3 inches         48.9 x 32.6 x 3.5 inches
                                                     1048.0 x 713.0 x 83.5 mm         1242.0 x 827.2 x 88.0 mm


Weight                      including stand            60.8 pounds / 27.6 kg               86.6 pounds / 39.3 kg
                            excluding stand            53.4 pounds / 24.2 kg               76.3 pounds / 34.6 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                                   32 ~ 104



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