Service Manuals, User Guides, Schematic Diagrams or docs for : LG Monitor LG_RU-42PZ61_RU-42PZ71_[SM]

<< Back | Home

Most service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.




Image preview - the first page of the document
LG_RU-42PZ61_RU-42PZ71_[SM]


>> Download LG_RU-42PZ61_RU-42PZ71_[SM] documenatation <<

Text preview - extract from the document
                                CANADA : http//biz.lgservice.com
                                USA    : http//www.lgservice.com
                                       : http//lgservice.com/techsup.html




PLASMA TV
SERVICE MANUAL
CHASSIS : RF-043A

MODEL : RU-42PZ61 RU-42PZ71
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 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 positioin, 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          CANADA: LG Electronics Canada, Inc. 550 Matheson
reading must be infinite.                                                     Boulevard East Mississauga, Ontario L4Z 4G3
An other abnormality exists that must be corrected before the
receiver is returned to the customer.                                 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.................................................................7


ADJUSTMENT INSTRUCTIONS ..........................................8


TROUBLE SHOOTING GUIDE ...........................................12


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


EXPLODED VIEW..........................................................26,28


EXPLODED VIEW PARTS LIST ....................................27,29


REPLACEMENT PARTS LIST ............................................30


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


PRINTED CIRCUIT BOARD ...................................................




                                                                               - 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




                                                           FRONT A/V INPUT
                                                                                                                  R




                               ON/OFF            S-VIDEO     VIDEO L/MONO AUDIO R                                                              TV/VIDEO       MENU     VOL     CH
                                                                                                                                                                                          RU-50PZ61
                                                                                                 TruSurround XT
                                                                                                  ruSurround




                                                                                                                                                                                          RU-60PZ61


                             1                    2         3            4                  5                                      6 7
                                                                                                                                      8                        9 10             11

                                        FRONT A/V INPUT
                           S-VIDEO       VIDEO     L/MONO AUDIO R               ON/OFF
                                                                                                                      R




                                                                                                   TruSurround XT
                                                                                                    ruSurround                                 TV/VIDEO       MENU     VOL     CH

                                                                                                                                                                                          RU-42PZ61



                            2             3                4                   1            5                                        6 7
                                                                                                                                        8                       9 10            11

                                        FRONT A/V INPUT
                                                                                                                                           R




                           S-VIDEO       VIDEO    L/MONO AUDIO R               ON/OFF                                      ruSurround
                                                                                                                          TruSurround XT          TV/VIDEO      MENU     VOL        CH
                                                                                                                                                                                          RU-42PZ71




                            2             3                4                   1            5                                                  6 7                       10          11
                                                                                                                                                          8      9

1. ON/OFF Button
                                                                                            6. Remote Control Sensor
2. S-VIDEO Input
   A connection available to provide better picture quality than                            7. Power Standby Indicator
   the video input.                                                                            Illuminates red in standby mode, Illuminates green when the
                                                                                               TV is turned on.
3. VIDEO Input
  Connects the video signal from a video device.                                            8. TV/VIDEO or ENTER Button

4. AUDIO Input                                                                              9. MENU Button
   Use to connect to hear stereo sound from an external device.
                                                                                            10. VOLUME (F,G) Buttons
5. INDEX
   Switches LED Display on or off.                                                          11. CHANNEL (E,                                                     D)     Buttons




                                                                                         - 4 -
                                      DESCRIPTION OF CONTROLS

Connection Options




                                                                                                       Monitor Output
 Remote Control Port                                                                                   Connect a second TV or
 Connect your wired RS-232C INPUT                                      DVD/DTV Input (Component 1-2) Monitor.
 remote control here. (CONTROL/SER-                                    Connect a component video/audio          S-Video Input
                      VICE) PORT                                       device to these jacks.                   Connect S-Video out from an S-
                      Connect to the RS-                                                                        VIDEO device to the S-VIDEO
                      232C port on a PC.                                                                        input.




                                                                                          COMPONENT                                                 MONITOR
                                                                                            INPUT 2
                                                                                                  R                                                 OUTPUT
        R        L                                                                        COMPONENT                                                   A/V                         AC INPUT
                                                                                            INPUT 1                                                 INPUT 1             Antenna
                        REMOTE    RS-232C INPUT       DVI INPUT   AUDIO INPUT RGB INPUT                                                                       S-VIDEO
                                                                                                                (R)   (L)      (R)   (L/MONO)
     EXTERNAL SPEAKER   CONTROL   (CONTROL/SERVICE)
                                                                                                      VIDEO       AUDIO          AUDIO      VIDEO




                                                                                                        Audio/Video Input 1
                                           DVI Input/Audio Input/ RGB                                   Connect audio/video
                                                                    Input                             output from an external              Antenna Input
                                         Connect the monitor output con-                               device to these jacks.              Connect cable or antenna
                                        nector from a PC to the appropri-                                                                  signals to the TV, either
                                                           ate input port.                                                                 directly or through your
                                                                                                                                           cable box.

External Speaker (8 ohm Output)
Connect to optional external speaker(s).                                                                                                          Power Cord Socket
* For further information, refer to `Speaker & Speaker                                                                    This TV operates on AC power. The voltage
  Stand' manual.                                                                                                               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.

                                      LIGHT                                                           MODE
      Illuminates the remote control buttons.                                                         Selects the remote operating mode: TV,
                                TV/VIDEO                                                              VCR, DVD, CABLE, HDSTB or AUDIO.
     Selects: TV, Video1-2, Component 1-2,                                                            Select other operating modes, for the
               RGB, and DVI input sources.                             HD                             remote to operate external devices.
                                                                                                      POWER
                                                                            MODE
                                                          LIGHT
                                                                                         POW
                                                                                                ER    Turns your TV or any other programmed
                           MULTIMEDIA                                   MULTIMEDIA        ARC         equipment on or off, depending on mode.
                                                                  O
                                                         TV/VIDE
        Selects: Component 1-2, RGB, and
                       DVI input sources.                                                             ARC
                                                                                                      Changes the aspect ratio.
                         NUMBER buttons                                                               REVIEW
                                                                                                      Tunes to the last channel viewed.
                                       FCR                                               REVIEW
                                                          FCR
          Use to scroll the Surf channel list.                                                        APC
                                                                                                      Adjusts the factory preset picture according
                                                        MUTE
                                     MUTE                                                  APC
                                                                                                      to the room.
                Switches the sound on or off.                         VOL          CH
                                                                                                      CHANNEL UP/DOWN
                                                                                                      Selects available channels found
                                                                   PIP/DW CAPTION
                     VOLUME UP/DOWN                     MENU                                   EXIT
                                                                                                      with Auto program.
      Increases/decreases the sound level.                                                            CAPTION
                                                                                                      Selects CAPTION mode.
                                    MENU
    Brings up the main menu to the screen.                              ENTER
                                                                                                      EXIT
                                                                                                      Clears all on-screen displays and returns
                                 PIP/DW                                                               to TV viewing from any menu.
                Switches between PIP, and
                                                        PIP CH-                           PIP INPUT   PIP INPUT
                   Double Window modes.
                                                                      PIP CH+ SWAP                    Selects the input source for the sub picture.
THUMBSTICK (Up/Down/Left/Right/ENTER)                   PLAY          PAUSE    STOP RECORD
                                                                                                      SWAP
     Allows you to navigate the on-screen                                                             Exchanges the sub/main images.
  menus and adjust the system settings to                REW           FF               SKIP
                                                                                                      VCR/DVD BUTTONS
                         your preference.                                                             Control some video cassette recorders or
                                                                   WIN.SIZE WIN.POSITION SLEEP
                                                                                                      DVD player ("RECORD" button is not avail-
                          PIPCH-/PIPCH+                MEMORY/ERASE            DASP            MTS
                                                                                                      able for DVD player).
 Changes to next lower/higher PIP channel.
                                                       A.PROG SPLIT ZOOM
                                                                                                      SLEEP
                                                                                                      Sets the sleep timer.
                                WIN. SIZE                                                             MTS
               Adjusts the sub picture size.                                                          Selects the MTS sound: Mono, Stereo, or
                       MEMORY/ERASE                                                                   SAP.
    Memorizes or erases selected channel.                                                             DASP
             A.PROG (AUTO PROGRAM)                                                                    Selects the sound appropriate for the pro-
           Searches for available channels.                                                           gram's character.

                             SPLIT ZOOM                                                               WIN.POSITION
                       Enlarges the picture.                                                          Moves the sub picture.




                                                                        - 6 -
                                            SPECIFICATIONS


         MODEL                RU-42PZ61                   RU-42PZ71                      RU-50PZ61           RU-60PZ61

   Width (inches / mm)          49.6 / 1260                     49.6 / 1260               57.7 / 1465         56.5 / 1436

   Height (inches / mm)         28.5 / 724.8                28.6 / 726.2                  33.3 /845.6         36 / 913.2

   Depth (inches / mm)           11.3 / 287                     11.3 / 287                13.2 / 335           3.9 / 98.6

   Weight (pounds / kg)         96.7 / 43.84                96.7 / 43.84                  117.5 / 53.3       172.3 / 78.15

        Resolution            1024 x 768 (Dot)              852 x 480 (Dot)              1366 x 768 (Dot)   1366 x 768 (Dot)

    Power requirement                                                     AC100-240V, 60Hz

    Television System                                                             NTSC

    Program Coverage                                        VHF 2 ~ 13, UHF 14 ~ 69, CATV 1 ~ 125

External Antenna Impedance                                                         75 

          Color                                            16,770,000 (256 steps of each R, G and B)

Operating Temperature Range                                             32 ~ 104



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