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LG_42LB1DR_[SM]


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




LCD TV
SERVICE MANUAL
CHASSIS : LA61A

MODEL : 42LB1DR-UA / 42LB1DRA-UA
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
                                          CONTENTS




CONTENTS .............................................................................................. 2

PRODUCT SAFETY ..................................................................................3

SPECIFICATION ........................................................................................6

ADJUSTMENT INSTRUCTION................................................................11

SVC REMOCON ......................................................................................17

VIDEO TROUBLE SHOOTING&BLOCK DIAGRAM ..............................18

AUDIO TROUBLE SHOOTING&BLOCK DIAGRAM..............................41

EXPLODED VIEW .................................................................................. 53

EXPLODED VIEW PARTS LIST ..............................................................54

REPLACEMENT PARTS LIST ............................................................... 55

SVC. SHEET ...............................................................................................




                                                   -2-
                                            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
 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 the
servicing of a receiver whose chassis is not isolated from the AC      Do not use a line Isolation Transformer during this check.
power line. Use a transformer of adequate power rating as this         Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor
protects the technician from accidents resulting in personal injury    between a known good earth ground (Water Pipe, Conduit, etc.)
from electrical shocks.                                                and the exposed metallic parts.
                                                                       Measure the AC voltage across the resistor using AC voltmeter
It will also protect the receiver and it's components from being       with 1000 ohms/volt or more sensitivity.
damaged by accidental shorts of the circuitry that may be              Reverse plug the AC cord into the AC outlet and repeat AC voltage
inadvertently introduced during the service operation.                 measurements for each exposed metallic part. Any voltage
                                                                       measured must not exceed 0.75 volt RMS which is corresponds to
If any fuse (or Fusible Resistor) in this TV receiver is blown,        0.5mA.
replace it with the specified.                                         In case any measurement is out of the limits specified, there is
                                                                       possibility of shock hazard and the set must be checked and
When replacing a high wattage resistor (Oxide Metal Film Resistor,     repaired before it is returned to the customer.
over 1W), keep the resistor 10mm away from PCB.
                                                                       Leakage Current Hot Check circuit
Keep wires away from high voltage or high temperature parts.
                                                                                             AC Volt-meter
Before returning the receiver to the customer,

always perform an AC leakage current check on the exposed
metallic parts of the cabinet, such as antennas, terminals, etc., to
be sure the set is safe to operate without damage of electrical                                                   Good Earth Ground
shock.                                                                                                            such as WATER PIPE,
                                                                       To Instrument's                            CONDUIT etc.
                                                                                                   0.15uF
Leakage Current Cold Check(Antenna Cold Check)                         exposed
                                                                       METALLIC PARTS
With the instrument AC plug removed from AC source, connect an
electrical jumper across the two AC plug prongs. Place the AC
switch in the on position, connect one lead of ohm-meter to the AC                              1.5 Kohm/10W
plug prongs tied together and touch other ohm-meter lead in turn to
each exposed metallic parts such as 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.




                                                                   -3-
                                          SERVICING PRECAUTIONS
CAUTION: Before servicing receivers covered by this service                unit under test.
manual and its supplements and addenda, read and follow the             2. After removing an electrical assembly equipped with ES
SAFETY PRECAUTIONS on page 3 of this publication.                          devices, place the assembly on a conductive surface such as
NOTE: If unforeseen circumstances create conflict between the              aluminum foil, to prevent electrostatic charge buildup or
following servicing precautions and any of the safety precautions on       exposure of the assembly.
page 3 of this publication, always follow the safety precautions.       3. Use only a grounded-tip soldering iron to solder or unsolder ES
Remember: Safety First.                                                    devices.
                                                                        4. Use only an anti-static type solder removal device. Some solder
General Servicing Precautions                                              removal devices not classified as "anti-static" can generate
1. Always unplug the receiver AC power cord from the AC power              electrical charges sufficient to damage ES devices.
   source before;                                                       5. Do not use freon-propelled chemicals. These can generate
   a. Removing or reinstalling any component, circuit board                electrical charges sufficient to damage ES devices.
      module or any other receiver assembly.                            6. Do not remove a replacement ES device from its protective
   b. Disconnecting or reconnecting any receiver electrical plug or        package until immediately before you are ready to install it.
      other electrical connection.                                         (Most replacement ES devices are packaged with leads
   c. Connecting a test substitute in parallel with an electrolytic        electrically shorted together by conductive foam, aluminum foil
      capacitor in the receiver.                                           or comparable conductive material).
      CAUTION: A wrong part substitution or incorrect polarity          7. Immediately before removing the protective material from the
      installation of electrolytic capacitors may result in an             leads of a replacement ES device, touch the protective material
      explosion hazard.                                                    to the chassis or circuit assembly into which the device will be
                                                                           installed.
2. Test high voltage only by measuring it with an appropriate high         CAUTION: Be sure no power is applied to the chassis or circuit,
   voltage meter or other voltage measuring device (DVM,                   and observe all other safety precautions.
   FETVOM, etc) equipped with a suitable high voltage probe.            8. Minimize bodily motions when handling unpackaged
   Do not test high voltage by "drawing an arc".                           replacement ES devices. (Otherwise harmless motion such as
3. Do not spray chemicals on or near this receiver or any of its           the brushing together of your clothes fabric or the lifting of your
   assemblies.                                                             foot from a carpeted floor can generate static electricity
4. Unless specified otherwise in this service manual, clean                sufficient to damage an ES device.)
   electrical contacts only by applying the following mixture to the
   contacts with a pipe cleaner, cotton-tipped stick or comparable      General Soldering Guidelines
   non-abrasive applicator; 10% (by volume) Acetone and 90% (by         1. Use a grounded-tip, low-wattage soldering iron and appropriate
   volume) isopropyl alcohol (90%-99% strength)                            tip size and shape that will maintain tip temperature within the
   CAUTION: This is a flammable mixture.                                   range or 500 F to 600 F.
   Unless specified otherwise in this service manual, lubrication of    2. Use an appropriate gauge of RMA resin-core solder composed
   contacts in not required.                                               of 60 parts tin/40 parts lead.
5. Do not defeat any plug/socket B+ voltage interlocks with which       3. Keep the soldering iron tip clean and well tinned.
   receivers covered by this service manual might be equipped.          4. Thoroughly clean the surfaces to be soldered. Use a mall wire-
6. Do not apply AC power to this instrument and/or any of its              bristle (0.5 inch, or 1.25cm) brush with a metal handle.
   electrical assemblies unless all solid-state device heat sinks are      Do not use freon-propelled spray-on cleaners.
   correctly installed.                                                 5. Use the following unsoldering technique
7. Always connect the test receiver ground lead to the receiver            a. Allow the soldering iron tip to reach normal temperature.
   chassis ground before connecting the test receiver positive                 (500 F to 600 F)
   lead.                                                                   b. Heat the component lead until the solder melts.
   Always remove the test receiver ground lead last.                       c. Quickly draw the melted solder with an anti-static, suction-
8. Use with this receiver only the test fixtures specified in this             type solder removal device or with solder braid.
   service manual.                                                             CAUTION: Work quickly to avoid overheating the
   CAUTION: Do not connect the test fixture ground strap to any                circuitboard printed foil.
   heat sink in this receiver.                                          6. Use the following soldering technique.
                                                                           a. Allow the soldering iron tip to reach a normal temperature
Electrostatically Sensitive (ES) Devices                                       (500 F to 600 F)
Some semiconductor (solid-state) devices can be damaged easily             b. First, hold the soldering iron tip and solder the strand against
by static electricity. Such components commonly are called                     the component lead until the solder melts.
Electrostatically Sensitive (ES) Devices. Examples of typical ES           c. Quickly move the soldering iron tip to the junction of the
devices are integrated circuits and some field-effect transistors and          component lead and the printed circuit foil, and hold it there
semiconductor "chip" components. The following techniques                      only until the solder flows onto and around both the
should be used to help reduce the incidence of component                       component lead and the foil.
damage caused by static by static electricity.                                 CAUTION: Work quickly to avoid overheating the circuit
1. Immediately before handling any semiconductor component or                  board printed foil.
   semiconductor-equipped assembly, drain off any electrostatic            d. Closely inspect the solder area and remove any excess or
   charge on your body by touching a known earth ground.                       splashed solder with a small wire-bristle brush.
   Alternatively, obtain and wear a commercially available
   discharging wrist strap device, which should be removed to
   prevent potential shock reasons prior to applying power to the


                                                                    -4-
IC Remove/Replacement
Some chassis circuit boards have slotted holes (oblong) through          Circuit Board Foil Repair
which the IC leads are inserted and then bent flat against the           Excessive heat applied to the copper foil of any printed circuit
circuit foil. When holes are the slotted type, the following technique   board will weaken the adhesive that bonds the foil to the circuit
should be used to remove and replace the IC. When working with           board causing the foil to separate from or "lift-off" the board. The
boards using the familiar round hole, use the standard technique         following guidelines and procedures should be followed whenever
as outlined in paragraphs 5 and 6 above.                                 this condition is encountered.

Removal                                                                  At IC Connections
1. Desolder and straighten each IC lead in one operation by gently       To repair a defective copper pattern at IC connections use the
   prying up on the lead with the soldering iron tip as the solder       following procedure to install a jumper wire on the copper pattern
   melts.                                                                side of the circuit board. (Use this technique only on IC
2. Draw away the melted solder with an anti-static suction-type          connections).
   solder removal device (or with solder braid) before removing the
   IC.                                                                   1. Carefully remove the damaged copper pattern with a sharp
Replacement                                                                 knife. (Remove only as much copper as absolutely necessary).
1. Carefully insert the replacement IC in the circuit board.             2. carefully scratch away the solder resist and acrylic coating (if
2. Carefully bend each IC lead against the circuit foil pad and             used) from the end of the remaining copper pattern.
   solder it.                                                            3. Bend a small "U" in one end of a small gauge jumper wire and
3. Clean the soldered areas with a small wire-bristle brush.                carefully crimp it around the IC pin. Solder the IC connection.
   (It is not necessary to reapply acrylic coating to the areas).        4. Route the jumper wire along the path of the out-away copper
                                                                            pattern and let it overlap the previously scraped end of the good
"Small-Signal" Discrete Transistor                                          copper pattern. Solder the overlapped area and clip off any
Removal/Replacement                                                         excess jumper wire.
1. Remove the defective transistor by clipping its leads as close as
   possible to the component body.                                       At Other Connections
2. Bend into a "U" shape the end of each of three leads remaining        Use the following technique to repair the defective copper pattern
   on the circuit board.                                                 at connections other than IC Pins. This technique involves the
3. Bend into a "U" shape the replacement transistor leads.               installation of a jumper wire on the component side of the circuit
4. Connect the replacement transistor leads to the corresponding         board.
   leads extending from the circuit board and crimp the "U" with
   long nose pliers to insure metal to metal contact then solder         1. Remove the defective copper pattern with a sharp knife.
   each connection.                                                         Remove at least 1/4 inch of copper, to ensure that a hazardous
                                                                            condition will not exist if the jumper wire opens.
Power Output, Transistor Device                                          2. Trace along the copper pattern from both sides of the pattern
Removal/Replacement                                                         break and locate the nearest component that is directly
1. Heat and remove all solder from around the transistor leads.             connected to the affected copper pattern.
2. Remove the heat sink mounting screw (if so equipped).                 3. Connect insulated 20-gauge jumper wire from the lead of the
3. Carefully remove the transistor from the heat sink of the circuit        nearest component on one side of the pattern break to the lead
   board.                                                                   of the nearest component on the other side.
4. Insert new transistor in the circuit board.                              Carefully crimp and solder the connections.
5. Solder each transistor lead, and clip off excess lead.                   CAUTION: Be sure the insulated jumper wire is dressed so the
6. Replace heat sink.                                                       it does not touch components or sharp edges.

Diode Removal/Replacement
1. Remove defective diode by clipping its leads as close as
   possible to diode body.
2. Bend the two remaining leads perpendicular y to the circuit
   board.
3. Observing diode polarity, wrap each lead of the new diode
   around the corresponding lead on the circuit board.
4. Securely crimp each connection and solder it.
5. Inspect (on the circuit board copper side) the solder joints of
   the two "original" leads. If they are not shiny, reheat them and if
   necessary, apply additional solder.
Fuse and Conventional Resistor
Removal/Replacement
1. Clip each fuse or resistor lead at top of the circuit board hollow
   stake.
2. Securely crimp the leads of replacement component around
   notch at stake top.
3. Solder the connections.
   CAUTION: Maintain original spacing between the replaced
   component and adjacent components and the circuit board to
   prevent excessive component temperatures.


                                                                     -5-
                                                   SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement.


1.General Specification(TV)

  No                            Item                                      Specification                       Remark

  1.    Video input applicable system                        PAL-D/K, B/G, I, NTSC-M, SECAM

                                                             NTSC 4.43

  2.    Receivable Broadcasting System                       1) PAL/SECAM BG                  (ZE/TE)

                                                             2) PAL/SECAM DK                  EU/Non-EU

                                                             3) PAL I/I                       (PAL Market)

                                                             4) SECAM L/L'

                                                             5) NTSC M

                                                             6) PAL-N/M                       6),7) South America Market

                                                             7) NTSC M                        7) Except South America NTSC Market (ME)

  3.    RF Input Channel                                     VHF : E2 ~ E12                   PAL

                                                             UHF : E21 ~ E69

                                                             CATV : S1 ~ S20

                                                             HYPER : S21~ S47

                                                             L/L' : B, C, D                   FRANCE

                                                             VHF : 2~13                       NTSC

                                                             UHF : 14~69

                                                             CATV : 1~125

                                                             VHF Low : 1 ~ M10                JAPAN

                                                             VHF High : 4~S22

                                                             UHF : S23~62

  4.    Input Voltage                                        AC 100 ~ 240 V/50Hz, 60Hz

  5.    Market                                               Worldwide

  6.    Picture Size                                         1067.308mm                       42.02inch(42LB1R)

  7.    Tuning System                                        FVS 100 program                  PAL, 200 PR.(Option)

                                                             FS                               NTSC

  8.    Operating Environment                                1) Temp : 0 ~ 40 deg

                                                             2) Humidity : 10~90 %

  9.    Storage Environment                                  3) Temp : -20 ~ 50 deg

                                                             4) Humidity : 10~90 %

  10.   Display                                              LCD Module                       LPL




                                                                  -6-
2. General Specification

 No                          Item                          Specification                                Remark
  1   Panel                             42" TFT WXGA LCD
  2   Frequency range                   H : 31 ~ 61Khz                                       PC Input
                                        V : 56 ~ 75Hz
  3   Control Function                  1) Contrast/Brightness
                                        2) H-Position / V-Position
                                        3) Tracking : Clock / Phase
                                        4) Auto Configure
                                        5) Reset
  4   Component Jack                    1:Y                                                  Middle east / NTSC Area
                                        3 : Pb
                                        5 : Pr
                                        7 : Line1 Ready
                                        9 : LINE2
                                        11: LINE3
                                        13: Line3 Ready
      D4 Jack(525i, 525p, 750p,1125i)   2 : Y GND                                            JAPAN Only
                                        4 : Pb GND
                                        6 : Pr GND
                                        8 : LINE1
                                        10:Line2 Ready
                                        12:SWITCH GND
                                        14: SWITCH
  5                                       H/V-Sync        Video       Power consumption      LED
      Power ON                                   -           -     240W
      Stand by                                                     3.0W                      Red
      DPMS Mode                           ON/OFF          OFF      30W                       Green
      Power off                                  -           -    -                          *
  6   LCD Module                        Outline            42"    1006 x 610 x 56(mm)        (H)x(V)x(D)
                                        Dimension
                                        Pixel Pitch        42"    0.227 x 0.681 x RGB(mm)
                                        Pixel Format      1366 horiz. By 768 vert.
                                                          Pixels RGB strip arrangement
                                        Coating           Hard coating(3H), Anti-glare
                                                          reatment of the front polarizer,
                                        Back Light        42"     20EEFL




                                            -7-
3.Optical Feature(LCD Module)

No.                   Item                                                        Specification                                             Remark

                                                                                         Min             Typ            Max
 1     Viewing Angle                  R/L, U/D                                                 176, 176
 2     Luminance                             Luminance(cd/ )                                             500
                                             Variation                                                                  1.3       Typical
 3     Contrast Ratio                        CR                                          300             400                      MAX/MIN
                                             CRD (With Al)                               700            1000                      ALL white/All back
 4     CIE Color Coordinates                 WHITE          Wx             Typ.                         0.285                     LPL
                                                            Wy             Typ.                         0.293
                                              RED            R             Typ.                         0.640
                                                            Ry             Typ.          Typ.           0.341           Typ.
                                             GREEN          Gx             Typ.         -0.03           0.287          +0.03
                                                            Gy             Typ.                         0.610
                                              BLUE           Bx            Typ.                         0.146
                                                             By            Typ.                         0.069



4.Component Video Input (Y, PB, PR)
                                                            Specification
 No                                                                                                                                       Proposed
         Resolution                      H-freq(kHz)                         V-freq(Hz)
  1.     640x480                     15.73                            60                             SDTV, DVD 480i              ZE, TE, ME
  2.     640x480                     15.63                            59.94                          SDTV, DVD 480i              ZE, TE, ME
  3.     720x480                     31.47                            59.94                          EDTV 480p                   TE, ME
  4.     720x576                     15.625                           50.00                          SDTV, DVD 625 Line          ZE, TE, ME
  5.     720x576                     31.25                            50.00                          HDTV 576p                   TE, ME
  6.     1280x720                    45.00                            60.00                          HDTV 720p                   TE, ME
  7.     1280x720                    44.96                            59.94                          HDTV 720p                   TE, ME
  8.     1920x1080                   31.25                            50.00                          HDTV 1080i 50Hz (AU Ver.)   TE, ME
  9.     1920x1080                   33.75                            60.00                          HDTV 1080i 60Hz (ATSC)      TE, ME
 10.     1920x1080                   33.72                            59.94                          HDTV 1080i 59.94Hz          TE, ME




5. RGB PC INPUT Mode Table
 No        Resolution          H-freq(kHz)              V-freq.(Hz)               Pixel clock(MHz)                               Proposed
                             Analog RGB, Digital RGB
  1      720x400             31.468                70.8                     28.321
  2      640x480             31.469                59.94                    25.17                           VESA
                             37.684                75.00                    31.5                            VESA
  3      800x600             37.879                60.31                    40.00                           VESA
                             46.875                75                       49.5                            VESA
  4      832x624             49.725                74.55                    57.283
  5      1024x768            48.363                60.00                    65.00                           VESA(XGA)
                             56.47                 70.00                    75.00                           VESA(XGA)
                             60.123                75.029                   78.75                           VESA(XGA)
  6      1280x768            47.776                59.870                   79.50                           VESA(WXGA)
  7      1360x768            47.720                59.799                   84.75                           VESA(WXGA)
  8      1366x768            47.720                59.799                   84.75                           Supported

                                                                            -8-
6. RGB DTV INPUT Mode Table
 No      Resolution        H-freq(kHz)         V-freq.(Hz)          Pixel clock(MHz)                    Proposed
  1    720x576            31.25            50.00                SDTV 576p 50Hz
  2    720x480            31.47            59.94                SDTV 480p 60Hz
  3    1280x720           45.00            50.00               HDTV 720p 50Hz            HDCP
  4    1280x720           44.96            59.94               HDTV 720p 60Hz            HDCP
  5    1920x1080          28.13            50.00               HDTV 1080i 50Hz           HDCP
  6    1920x1080          33.72            59.94               HDTV 1080i 60Hz           HDCP

7. HDMI PC INPUT Mode Table
 No      Resolution        H-freq(kHz)         V-freq.(Hz)          Pixel clock(MHz)                   Proposed
                          Analog RGB, Digital RGB
  1    720x400            31.468           70.8                28.321
  2    640x480            31.469           59.94               25.17                     VESA
                          37.684           75.00               31.5                      VESA
  3    800x600            37.879           60.31               40.00                     VESA
                          46.875           75                  49.5                      VESA
  4    832x624            49.725           74.55               57.283
  5    1024x768           48.363           60.00               65.00                     VESA(XGA)
                          56.47            70.00               75.00                     VESA(XGA)
                          60.123           75.029              78.75                     VESA(XGA)
  6    1280x768           47.776           59.870              79.50                     VESA(WXGA)
  7    1360x768           47.720           59.799              84.75                     VESA(WXGA)
  8    1366x768           47.720           59.799              84.75                     Supported
  9    1920x1080          33.75            60.00               86.375                    HDCP DVI Digital 1080i
 10    1280x720           45.00            60.00               74.375                    HDCP DVI Digital 720p


8. HDMI DTV INPUT Mode Table
 No      Resolution        H-freq(kHz)         V-freq.(Hz)          Pixel clock(MHz)                   Proposed
  1    720x576            31.25            50.00                SDTV 576p 50Hz
  2    720x480            31.47            59.94                SDTV 480p 60Hz
  3    1280x720           45.00            50.00               HDTV 720p 50Hz            HDCP
  4    1280x720           44.96            59.94               HDTV 720p 60Hz            HDCP
  5    1920x1080          28.13            50.00               HDTV 1080i 50Hz           HDCP
  6    1920x1080          33.72            59.94               HDTV 1080i 60Hz           HDCP


9. Mechanical specification

 No,                         Item                                            Content                              Remark

  1    Product Dimenson                                      Width(W)        Length(D)    Height(H)

                                    Before Packing           1175           300          768          With Stand

                                    After Packing            1282           386          920

  2    Product Weight               Only SET                                  43.4Kg                  With Stand

                                    With Box                                  48.2kg




                                                               -9-
10. Mechanical specification
  Scart Arrangement 1.(Full Scart)
   Pin                            Signal                           Signal Level   Impedance
   1      Audio Output B (right)               0.5 Vrms                             <1
   2      Audio Input B (right)                0.5 Vrms                            > 10
   3      Audio Output A (left)                0.5 Vrms                             <1
   4      Ground (audio)                       -                                     -
   5      Ground (blue)                        -                                     -
   6      Audio input A (left)                 0.5 Vrms                            > 10
   7      Blue input                           0.7 V                                75
   8      Function Select (AV control)         High (9.5 - 12V) - AV Mode
                                               Mid (5 - 8V) - Wide Screen          > 10
                                               Low (0 - 2V) - TV Mode
   9      Ground (Green)                       -                                     -
   10     Comms Data 2
   11     Green input                          0.7 V                                75
   12     Comms Data 1
   13     Ground (Red)                         -                                     -
   14     Ground (Blanking)                    -                                     -
   15     Red input                            0.7 V                                75
   16     RGB Switching Control                High (1 - 3V) - RGB
                                               Low (0 - 0.4V) - Composite           75
   17     Ground (Video input & Output)        -                                     -
   18     Ground (RGB Switching Control)       -                                     -
   19     Video output (Composite)             1V including sync                    75
   20     Video input (Composite)              1V including sync                    75
   21     Common ground (Shield)               -                                     -

 
Scart Arrangement 2.(Half Scart) Pin Signal Signal Level Impedance 1 Audio Output B (right) 0.5 Vrms <1 2 Audio Input B (right) 0.5 Vrms > 10 3 Audio Output A (left) 0.5 Vrms <1 4 Ground (audio) - - 5 Ground (blue) - - 6 Audio input A (left) 0.5 Vrms > 10 7 - - - 8 Function Select (AV control) High (9.5 - 12V) - AV Mode Mid (5 - 8V) - Wide Screen > 10 Low (0 - 2V) - TV Mode 9 Ground (Green) - - 10 Comms Data 2 11 - - - 12 Comms Data 1 13 Ground (Red) - - 14 Ground (Blanking) - - 15 Red input 16 - - - 17 Ground (Video input & Output) - - 18 - - - 19 Video output (Composite) 1V including sync 75 20 Video input (Composite) 1V including sync 75 21 Common ground (Shield) - - - 10 - ADJUSTMENT INSTRUCTION 1. Application Object If you turn on a still screen more than 20 minutes (Especially These instructions are applied to all of the PDP TV, PA61A. Digital pattern(13 CH), Cross Hatch Pattern), an afterimage may occur in the black level part of the screen. 2. Notes 3. EPLD Download (1) Because this is not a hot chassis, it is not necessary to use an isolation transformer. However, the use of isolation transformer will help protect test equipment. (2) Adjustments must be done in the correct order. VSC (3) The adjustments must be performed in the circumstance of PC 25


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