Service Manuals, User Guides, Schematic Diagrams or docs for : LG Monitor LG_50PX1D_AF-05FC_[SM]

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LG_50PX1D_AF-05FC_[SM]


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




PLASMA TV
SERVICE MANUAL
CHASSIS : AF-05FC

MODEL : 50PX1D 50PX1D-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




                                                                 - 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.
  Here shown may be somewhat different from your TV.




                                               Front Panel Controls




                                                            TV/VIDEO    MENU          VOL            CH



                     POWER Button
                                                                       MENU Button              CHANNEL (E,   D)   Buttons

                             Remote Control Sensor           TV/VIDEO Button        VOLUME (F,G) Buttons


                                                        Power Standby Indicator
                                                        -Without CableCARDTM : Illuminates red in
                                                        standby mode, Illuminates green when the
                                                        TV is turned on.
                                                        -Inserting the CableCARDTM : Illuminates
                                                        orange in standby mode, Illuminates green
                                                        when the TV is turned on.




                                                             - 4 -
                             DESCRIPTION OF CONTROLS

   Connection Options

                                                Back Connection Panel


                                                                                                                               S-VIDEO Input
                                                                                                               FRONT
                                                                                                              A/V INPUT        A connection available to provide bet-
                                                                                                                               ter 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.




                                      RGB/AUDIO INPUT
                                      Connect the monitor output connector                                                                             Remote Control Port
                                      from a PC to the appropriate input port.                                                                         Connect your wired
CableCARDTM                                                                                                                                            remote control here.
Used for
CableCARDTM              RS-232C INPUT (CON-                                                 DVD/DTV Input                             S-Video Input
                        TROL/SERVICE) PORT                                                   (Component 1-2)                           Connect S-                               Antenna Input
received from
                        Connect to the RS-232C                                            Connect a component                          Video out from                           Connect over-the-
Cable Service
                        port on a PC.                                                     video/audio device to                        an S-VIDEO                               air signals to this
Provider.
                                                                                               these jacks.                            device to the S-                         jack.
                                                                                                                                       VIDEO input.
                                            RS-232C INPUT
                                        (CONTROL/SERVICE)


                                OUTPUT                                                             VIDEO                   AUDIO       VIDEO     AUDIO

                                                                                                                          L        R            L            R
                                                                                                          COMPONENT INPUT 2               MONITOR OUTPUT
                               COMPONENT2       DIGITAL AUDIO (OPTICAL)
                               INPUT                                                       DVD
                                                                                                                                                                           REMOTE    CABLE   ANTENNA   AC INPUT
                 HDMI /DVI                                                                 /DTV
                                                                                                                                                                           CONTROL
                                                                      RGB INPUT   AUDIO    INPUT
    Cable                                                                         INPUT
                                                                                                                                                    (MONO)
                                 DVI
                                                                                                          COMPONENT INPUT 1                    A/V INPUT
                                INPUT                                                                                                                            S-VIDEO




                              Digital Audio (DVI:                                                                                      Monitor Output
            HDMI/DVI          Digital Visual                                              Audio/Video Input                            Connect a second TV
            connect a         Interface/Component2)                                       Connect audio/video                          or Monitor.
            DVI(Video)        Input/                                                      output from an
            signal to         Digital Audio Output                                        external device to                                              CABLE Input
            HDMI/DVI.         Connect digital audio                                       these jacks.                                    Connect cable signals to this
                              from various types of                                                                                      jack, either directly or through
                              equipment. Note: In                                                                                                            a cable box.
                              standby mode,
                                                                                                                                                      Power Cord Socket
                              these ports will not
                                                                                                                          This TV operates on an AC power. The voltage
                              work.
                                                                                                                           is indicated on the Specifications page. Never
                                                                                                                                  attempt to operate 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.



                                  TV INPUT
 



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