Service Manuals, User Guides, Schematic Diagrams or docs for : LG TV Video lg_pv71ad27_20ki14u71_20ki14u72_20ki20u71_20ki20u72

<< 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_pv71ad27_20ki14u71_20ki14u72_20ki20u71_20ki20u72


>> Download lg_pv71ad27_20ki14u71_20ki14u72_20ki20u71_20ki20u72 documenatation <<

Text preview - extract from the document
                                 SERVICE BULLETIN
                                                                                 No.        : VSB-85030
                                                                                 Date       : 08/06/1998
                  KI-14U71
                  KI-14U71X
Model
                  KI-20U71
                  KI-20U72X
Buyer             GB000001
                                                                                From the shipment
EFFECTIVE DATE 31/05/1998                     EFFECTIVE FROM(SERIAL NO.)
                                                                                on June 1998
Subject           Improvement of the reliability


                   Before Change                        After Change                           K-
No. LOC NO.                                                                           Note         Remark
                PART NO.      DESC./SPEC.       PART NO.         DESC./SPEC.                  CODE
                              SHIELD                         SHIELD
    1          4814V00016A    BUTTOM
                                              4814V00016B    MAIN 1 SBHG-1 . BOTTOM
                                                                                        B      3


Reason Of Change
Symptom : "HUM" in sound when playing a tape recorded in SET.
Countermeasure : Add a silicon shield plate to SHIELD BOTTOM.



** FILE THIS SERVICE BULLETIN WITH YOUR SERVICE MANUAL
               NOTE(**) : INTERCHANGEABILITY CODE                                  KEY-WORD CODE
    Parts           Set

                         Original or new parts may be used in early or
    Original      Early late production sets.                                 1. To improve performance
A
    New           Late     Use original parts until exhausted, then stock     2. To improve productivity
                          new parts.
                          Original parts may be used in early production
                          sets only.                                          3. To improve reliability
    Original      Early
                          New parts may be used in early or late production
B                         sets.
    New           Late                                                        4. Change of material or
                          Use original parts where possible, then stock new   dimension
                          parts.
                           New parts only may be used in early or late        5. Addtion
    Original      Early
                          production sets.
C
    New           Late
                           Stock new parts.                                   6. Deletion
                        Original parts only may be used in early
    Original      Early production sets.                                      7. Correction
D                       New parts may be used in late production sets
    New           Late  only.
                        Stock original and new parts.



                                                          CHIEF ENGINEER ,
                                                                  FACTORY.
                              TROUBLE SHOOTING

    NO POWER : NO STAND-BY




           Check if the              NO
                                                     Replace the Fuse
          Fuse is O.K.?




                   YES




        Is there voltage at          NO               Check/Replace
          pin 9 of T801?                     D801, D802, 803, 804, R801, C807.




                   YES




                                     NO              Check/Replace
       Is there about 6.1V
                                             D806, Q801, R807, ZD801, C814,
        at pin 9 of IC801?
                                                         IC801.



                   YES


                                             



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