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LG_42PC1DV_PB61H_[SM]


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                                                  website:http://biz.LGservice.com
                                  e-mail:http://www.LGEservice.com/techsup.html




PLASMA TV
SERVICE MANUAL
CHASSIS : PB61A

MODEL : 42PC1DV
                  42PC1DV-AA

CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
                                             CONTENTS




SAFETY PRECAUTIONS ....................................................................................3

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

SPECIFICATIONS ..............................................................................................10

ADJUSTMENT INSTRUCTIONS .......................................................................12

TROUBLE SHOOTING GUIDE ..........................................................................17

PRINTED CIRCUIT DIAGRAM ..........................................................................23

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

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

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

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

SCHEMATIC DIAGRAM.........................................................................................
                                             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 isolation 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 circuitry that may be             voltage measurements for each exposed 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 specified, there is
it with the specified.                                                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

Due to high vacuum and large surface area of picture tube,
                                                                                             AC Volt-meter
extreme care should be used in handling the Picture Tube.
Do not lift the Picture tube by it's Neck.


                                                                                                                Good Earth Ground
                                                                                                                such as WATER PIPE,
Leakage Current Cold Check(Antenna Cold Check)                          To Instrument's                         CONDUIT etc.
With the instrument AC plug removed from AC source,                                                0.15uF
                                                                        exposed
connect an electrical jumper across the two AC plug prongs.             METALLIC PARTS
Place the AC switch in the on position, connect one lead of
ohm-meter to the AC plug prongs tied together and touch other
ohm-meter lead in turn to each exposed metallic parts such as                                  1.5 Kohm/10W
antenna terminals, phone jacks, etc.
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
reading must be infinite.
An other abnormality exists that must be corrected before the
receiver is returned to the customer.
                              DESCRIPTION OF CONTROLS

    D/A INPUT Selects digital or analogue mode.
    (Digital TV /                                                        INPUT
   Analogue TV)                                                           D/A         POWER                     TV

         INPUT External input modes rotate in regular sequence:          INPUT                                  DVD
               Digital, Analogue, AV1-2, Component 1-2, RGB-
               DTV (or RGB-PC), HDMI/DVI.                                ARC                                VCR


                                                                       1 TEXT         PIP        GUIDE      INFO
       POWER Switches the set between ON and STANDBY.

           ARC Selects your desired picture format.

             +/-    Adjusts brightness on screen.
                    It returns to the default settings brightness by
                    changing mode source.                                      LIST                      I/II
                                                                                        MENU
                                                                        EXIT                                    SLEEP
     VCR/DVD Control some video cassette recorders or DVD players
control buttons ("RECORD" button is not available for DVD player).
                                                                                            OK
            OK Accepts your selection or displays the current
                mode.
 THUMBSTICK Adjusts menu settings.
  (Up/Down/Left  Selects menu item.
      Right/OK)
                                                                                        Q.VIEW

                                                                           VOL                            PR
  VOLUME +/- Increase/decrease the sound level.
                                                                                            MUTE


       Q.VIEW Returns to the previously viewed programme.
                                                                             1               2              3
         MUTE Switches the sound on or off.
                                                                             4               5              6
Programme +/- Selects a programme.
                                                                             7               8              9
NUMBER button Concurrently, compare with the Dynamic, Standard,
                                                                           APM               0              FAV
        APM Mild, User1 and User2 on the screen.

         FAV Displays the selected favourite programmes.
                                                                          SIZE          INDEX            TIME
  (FAVOURITE)                                                                  ?

                                                                          REVEAL        PIP PR +         PIP PR -

    PIP PR +/- Selects a programme for the sub picture.                   PIP INPUT     SWAP


    PIP INPUT Selects the input mode for the sub picture.

         SWAP Alternates between main and sub picture in
              PIP/Twin picture mode.
       TV, DVD, Selects the remote operating mode: TV, VCR, DVD. Select other operating modes,
           VCR, for the remote to operate external devices.

             PIP Switches to PIP, POP and Twin picture modes or off mode.

         GUIDE Shows a programme schedule.

           INFO Shows the present screen information.

     COLOURE They are used as per the indications or functions displayed on the TV screen in
        Button the case of Text displays (Teletext, EPG) and programme edit.

           EXIT Returns to TV viewing from any menu.

            LIST Displays the programme table.

          MENU Selects a menu.

              I/II Selects the sound output or the audio mode.

         SLEEP Sets the sleep timer.

             These buttons are used for teletext.
    1 TELETEXT
     BUTTONS Text button is used to enable teletext services while other buttons are for teletext
             functions.
             * For further details, see the `Teletext' section



    Installing Batteries                                   Remote control effective range


                                                                                         R




                                                                           INPUT
                                                                                                        INPUT
                                                                            D/A    POWER         TV
                                                                                                         D/A      POWER                TV
                                                                           INPUT                 DVD
                                                                                                        INPUT                          DVD

                                                                           ARC                   VCR
                                                                                                        ARC                        VCR

                                                                           TEXT    PIP   GUIDE   INFO
                                                                                                        TEXT      PIP   GUIDE      INFO




n   Open the battery compartment cover on the                                                              LIST
                                                                                                                    MENU
                                                                                                                                I/II




    back side and install the batteries matching       n   Use a remote control up to 7 meters distance
    correct polarity (+with +,-with -).                    and 30 degree (left/right) within the receiving
n   Install two 1.5V AA batteries. Don't mix old or        unit scope.
    used batteries with new ones.                      n   Dispose of used batteries in a recycle bin
n   Close cover.                                           to preserve environment.
Front Panel Controls




                                 INPUT   MENU   OK          VOL           PR




        Remote
        Control             POWER INPUT MENU OK           VOLUME         PROGRAMME
        Sensor              Button Button Button Button   (F,G)Buttons   (E,D)Buttons

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


                                                                                                                                                                 AUDIO Input
                                                                                                                                                                 Connections are available for listen-
                                                                                                                                                                 ing to stereo sound from an external
                                                                                                                                                                 device.
                                                                                                                                                                 VIDEO Input
                                                                                                                                                                 Connects the video signal from a
                                                                                                                                                                 video device.
                                                                           10

                                                                                   AV OUT
                                                                                              AV OUT

                                                                       1
                                                                                     (    )
                                                                           VIDEO         AUDIO        S-VIDEO             VIDEO                   AUDIO

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



                                                                                                 ANTENNA          7
                                                                                                   OUT


                                                                                                                ANTENNA
                                                                                                                  OUT             RGB IN        REMOTE

                    4
                 HDMI/DVI IN             5
                               DIGITAL AUDIO OUT    RS-232C IN
                                                               6
                                                                                                 ANTENNA
                                                                                                    IN
                                                                                                                                                CONTROL IN
                                                                                                                                                             8          9
                                    OPTICAL      (CONTROL & SERVICE)
                                                                                                                              AUDIO (RGB/DVI)
                                                                                                                                                       RGB IN        REMOTE
                                                                                                                ANTENNA                                              CONTROL IN
                HDMI/DVI IN     DIGITAL AUDIO OUT    RS-232C IN                                                    IN          RGB (PC/DTV)
                                     OPTICAL      (CONTROL & SERVICE)
                                                                                                                                                   AUDIO (RGB/DVI)



                                                                                                                                                    RGB (PC/DTV)




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

                                             INPUT
                                              D/A         POWER                     TV

                                             INPUT                                  DVD

                                             ARC                                VCR


                                            TEXT          PIP        GUIDE      INFO




                                                   LIST                      I/II
                                                            MENU
                                            EXIT                                    SLEEP




     Owner's Manual                                             OK




                                                            Q.VIEW

                                               VOL                            PR

                                                                MUTE




                                                 1               2              3

                                                 4               5              6

                                                 7               8              9

                                               APM               0              FAV


                                              SIZE          INDEX            TIME
                                                   ?

                                              REVEAL        PIP PR +         PIP PR -

                                              PIP INPUT     SWAP




 Owner's Manual          Batteries     Remote Control                                                 Power Cord




  For 42PC1D/42PC1DG/42PC1DV/50PC1D

                                         42PC1DG                                                  42PC1DG
                                      /42PC1DV only                                             /50PC1D only




  2-Wall brackets       2-eye-bolts      2- Bolts                                             Polishing Cloth
                                                                                            Polish the screen with
                                                                                                   the cloth.
STAND INSTALLATION (OPTION)


 1                                              A
                                                               2




 3                                                             4
                                                B                                                  C




O Place  the set with the screen facing down on a cushion or soft cloth as shown in Figures 1.
  Before unfolding the stand, please make sure two locks (A) on the bottom of the stand push outward.
O Pull the stand out as shown above in Figures 2 ~ 3.
  After unfolding the stand, please insert and tighten the screws in the holes (B) on the bottom of the
  stand.
O When connecting cables to the set, Do not disengage the lock (C).
  This may cause the set to fall, causing serious bodily injury and serious damage to the set.




 * NOTE
 Figures shown here may be slightly different from your set.
                                                                                 D                     A
 When closing the stand for storage                                                                     B
  First remove the screws in the holes (B) on the bottom
  of the stand. And then pull two Hooks (D) of the stand
  bottom
  and fold the stand into the back of the set.
   After folding, push two Locks (A) of the stand bottom
   outward.
                                                     SPECIFICATIONS
NOTE : Specifications and others are subject to change without notice for improvement.


V   Application Range
    This spec is applied to the 42" PLASMA TV used PB61A Chassis.

              Chassis                   Model Name                      Market                    Brand               Remark
              PB61A                  42PC1DV-AA                         Australia                  LG



V   Specification
    Each part is tested as below without special appointment.
    1) Temperature : 25



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