Service Manuals, User Guides, Schematic Diagrams or docs for : LG Monitor LG_50PY2DR_AF-05FA_[SM]

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LG_50PY2DR_AF-05FA_[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-05FA

MODEL : 50PY2DR 50PY2DR-UA
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


PRINTED CIRCUIT BOARDS .............................................18


BLOCK DIAGRAM...............................................................23


EXPLODED VIEW...............................................................26


EXPLODED VIEW PARTS LIST .........................................27


REPLACEMENT PARTS LIST ............................................28


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




                                                                               - 3 -
                             DESCRIPTION OF CONTROLS

         Controls
W   This is a front panel of 50PY2DR, 60PY2DR series TVs.
- This is a simplified representation of a front panel.
  Here shown may be somewhat different from your TV.
- This manual explains the features available on the 50PY2DR, 60PY2DR series TVs.


                                                                                                                CHANNEL
                             Front Panel Controls                                                               Buttons
                                                                                                                VOLUME Buttons

                                                                                                            MENU Button

                                                                                                            TV/VIDEO Button

                                                                                                            TV GUIDE Button
                                                                                                            POWER Button




                                                                                                            Memory Card
                                                                                                            Slots 1,2




                                                         Power Standby Indicator
                    INDEX
Remote Control                          Program          Blinks orange in standby mode, blinks
                    Switches
Sensor              LED Display         Display          green when the TV is turned on.
                    on or off.




                     RGB-PC(or RGB-DTV) mode                              On recording


                    IEEE1394 mode                                         On playing


                    HDMI1/DVI or HDMI2 mode                               On operating the TimeShift


                    Component1 or 2 mode                                  State of setting the reserve record


                    Antenna or Cable mode                                 On operating the           mode


                    Video or Front Video mode




                                                            - 4 -
                                  DESCRIPTION OF CONTROLS

              Connection Options
W   This is a back panel of 50PY2DR, 60PY2DR series TVs.

                                                                                                                                                                                              Back Connection Panel


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




                                                                                                                                                                                                                                                                                                                      S-VIDEO
                                                                                                                                                                                                                                                                                                                                                                    VIDEO Input




                                                                                                                                                                                                                                                                                                                      VIDEO
                                                                                                                                                                                                                                                                                                                                                                    Connects the video signal from a
                                                                                                                                                                                                                                                                                                                                                                    video device.




                                                                                                                                                                                                                                                                                                                      R AUDIO L / MONO
                                                                                                                                                                                                                                                                                                                                                                    AUDIO Input
                                                                             RS-232C INPUT                                                  VIDEO INPUT               AUDIO INPUT
                                                                             (CONTROL/SERVICE)
                                                                                                                                                                        L    R
                                                                                                                                                                                              VIDEO   L    AUDIO   R
                                                                                                                                                          COMPONENT                 MONITOR                            S   R C
                                                                                                                                    DVD                       2                     OUTPUT                             V   E   O
                                                                 OUTPUT                                                             /DTV
                                                                                                                                    INPUT                                                                              I   M N
                                                                                                                                                          COMPONENT                    A/V
                                                                                                                                                                                                                           O T
                                                                                                                                                              1                      INPUT1               (MONO)       D
                                              I 1   HDMI 2                                                                                                                                                             E   T   R

                                                                                                                                                                                                                       O   E   O
                                                                COMPONENT2      DIGITAL AUDIO (OPTICAL)
                                              E3                                                                                                                                                                               L
                                                                INPUT                                                                                                                                                              CABLE   ANTENNA   AC INPUT
                                              E9    HDMI /DVI                                             RGB INPUT   AUDIO INPUT

                                              E4                  DVI
                                                                 INPUT




                                                                                                                                                                                                                                                                                                                                                                    Connections are available for listen-



                                                                                                                                                                                                                                                                                                                      R
                                                                                                                                                                                                                                                                                                                                                                    ing stereo sound from an external
                                                                                                                                                                                                                                                                                                                                                                    device.



                                              RS-232C INPUT
                                             (CONTROL/SER-
                                             VICE) PORT                                                                                                                                                                                                                                                                                                                     Remote Control Port
      Cable
                                             Connect to the RS-                                                                                                                                                                                                                                                                                                             Connect your wired
                                             232C port on a PC.                                                                                                                                                                                                                                                                                                             remote control here.
                                                                                                                                                                                                                                                                                                          DVD/DTV Input
                              IEEE1394                                                                                                                                                                                             RGB/AUDIO                                                              (Component 1-2)
                              Connect                                                                                                                                                                                              INPUT                                                                                                                         S-Video
                                                                                                                                                                                                                                                                                                          Connect a com-
                              DVHS or                                                                                                                                                                                              Connect the moni-                                                                                                             Input
                                                                                                                                                                                                                                                                                                          ponent                                                                                                        Antenna Input
              G-LINK          MicroMV to                                                                                                                                                                                           tor output from a                                                                                                             Connect S-
                                                                                                                                                                                                                                                                                                          video/audio                                                                                                   Connect over-the-
              Connect an      IEEE1394                                                                                                                                                                                             PC to the appropri-                                                                                                           Video out from
                                                                                                                                                                                                                                                                                                          device to these                                                                                               air signals to this
              IR controller   Connector.                                                                                                                                                                                           ate input port.                                                                                                               an S-VIDEO
                                                                                                                                                                                                                                                                                                          jacks.                                                                                                        jack.
              to this jack.                                                                                                                                                                                                                                                                                                                                      device.

CableCARDTM
Used for                                                                                                                                                                                                                                   RS-232C INPUT
                                                                                                                                                                                                                                           (CONTROL/SERVICE)
CableCARDTM
received from Cable                                                                                                                                                                                          OUTPUT
                                                                                                                                                                                                                                                                                                                                           VIDEO            AUDIO        VIDEO      AUDIO
                                                                                                                                                                                                                                                                                                                                                                                                                                            AC INPUT
Service                                             HDMI 2
                                                                                                                                                                                                                                                                                                                                                            L
                                                                                                                                                                                                                                                                                                                                             COMPONENT INPUT 2
                                                                                                                                                                                                                                                                                                                                                                    R              L

                                                                                                                                                                                                                                                                                                                                                                            MONITOR OUTPUT
                                                                                                                                                                                                                                                                                                                                                                                                R



Provider.                        IEEE-1394
                                                                                                                                                                                                      COMPONENT2
                                                                                                                                                                                                      INPUT
                                                                                                                                                                                                                                                                DIGITAL AUDIO (OPTICAL)
                                                                                                                                                                                                                                                                                                              DVD
                                                                                                                                                                                                                                                                                                              /DTV                                                                                            REMOTE      CABLE   ANTENNA
                                                                                                                                                                                                                                                                                                      AUDIO   INPUT                                                                                           CONTROL
                                                                                                                                                                                                                                                                                          RGB INPUT
                                                HDMI /DVI                                                                                                                                                                                                                                             INPUT                                                                            (MONO)
                                                                                                                                                                                                                    DVI                                                                                                                      COMPONENT INPUT 1                   A/V INPUT 1        S-VIDEO
                                                                                                                                                                                                                   INPUT




                                                                                                                                                                                                          Digital Audio (DVI:                                                                            Audio/Video Input                                                   Monitor Output
                              HDMI1/DVI(VIDE                                                                                                                                                                                                                                                             Connect audio/video
                                                                                                                                                                                                          Digital Visual                                                                                                                                                     Connect a second
                              O), HDMI 2                                                                                                                                                                                                                                                                 output from an exter-
                                                                                                                                                                                                          Interface/Compon                                                                                                                                                   TV or Monitor.
                              Connect a HDMI                                                                                                                                                                                                                                                             nal device to these
                                                                                                                                                                                                          ent2) Input/
                              signal to                                                                                                                                                                                                                                                                  jacks.                                                                             CABLE Input
                                                                                                                                                                                                          Digital Audio
                              HDMI1/DVI or                                                                                                                                                                                                                                                                                                                                 Connect cable signals to this
                                                                                                                                                                                                          Output
                              HDMI2. Or                                                                                                                                                                                                                                                                                                                                 jack, either directly or through a
                                                                                                                                                                                                          Connect digital
                              DVI(VIDEO) sig-                                                                                                                                                                                                                                                                                                                                                   cable box.
                                                                                                                                                                                                          audio from various
                              nal to HDMI1/DVI
                                                                                                                                                                                                          types of equipment.
                              port with DVI to                                                                                                                                                                                                                                                                                                 Power Cord Socket
                                                                                                                                                                                                          Note: In standby
                              HDMI cable.                                                                                                                                                                                                                                                                         This TV operates on an AC power. The voltage is
                                                                                                                                                                                                          mode,
                                                                                                                                                                                                          these ports will not                                                                                 indicated on the Specifications page. Never attempt
                                                                                                                                                                                                          work.                                                                                                                   to operate the TV on DC power.



Note:
- After removing the cover, you can insert the CableCARDTM or connect to the G-LINK jack.




                                                                                                                                                                                                                                                                                                 - 5 -
                              DESCRIPTION OF CONTROLS

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




                                      POWER                                                              VCR/DVD BUTTONS
       Turns your TV or any other programmed                TV INPUT                          TV/VIDEO
                                                                                                         



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