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14n21ns


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TOSHIBA


SERVICE MANUAL

COLOUR TELEVISION
                 14N21NS




                    PRINTED IN UK.   2002 C
                       SERVICING NOTICES ON CHECKING
1. KEEP THE NOTICES                                      6. AVOID AN X-RAY
  As for the places which need special attentions,        Safety is secured against an X-ray by consider-
  they are indicated with the labels or seals on the      ing about the cathode-ray tube and the high
  cabinet, chassis and parts. Make sure to keep the       voltage peripheral circuit, etc.
  indications and notices in the operation manual.        Therefore, when repairing the high voltage pe-
                                                          ripheral circuit, use the designated parts and
2. AVOID AN ELECTRIC SHOCK                                make sure not modify the circuit.
  There is a high voltage part inside. Avoid an           Repairing except indicates causes rising of high
  electric shock while the electric current is            voltage, and it emits an X-ray from the cathode-
  flowing.                                                ray tube.
3. USE THE DESIGNATED PARTS                              7. PERFORM A SAFETY CHECK AFTER
  The parts in this equipment have the specific             SERVICING
  characters of incombustibility and withstand
                                                           Confirm that the screws, parts and wiring which
  voltage for safety. Therefore, the part which is
                                                           were removed in order to service are put in the
  replaced should be used the part which has
                                                           original positions, or whether there are the
  the same character.
                                                           portions which are deteriorated around the
  Especially as to the important parts for safety
                                                           serviced places serviced or not. Check the
  which is indicated in the circuit diagram or the
                                                           insulation between the antenna terminal or
  table of parts as a     mark, the designated
                                                           external metal and the AC cord plug blades.
  parts must be used.
                                                           And be sure the safety of that.
4. PUT PARTS AND WIRES IN THE                              (INSULATION CHECK PROCEDURE)
   ORIGINAL POSITION AFTER
                                                           1. Unplug the plug from the AC outlet.
   ASSEMBLING OR WIRING                                    2. Remove the antenna terminal on TV and turn
  There are parts which use the insulation                    on the TV.
  material such as a tube or tape for safety, or           3. Insulation resistance between the cord plug
  which are assembled in the condition that                   terminals and the eternal exposure metal
  these do not contact with the printed board.                [Note 2] should be more than 1M ohm by
  The inside wiring is designed not to get closer             using the 500V insulation resistance meter
  to the pyrogenic parts and high voltage parts.              [Note 1].
  Therefore, put these parts in the original               4. If the insulation resistance is less than 1M
  positions.                                                  ohm, the inspection repair should be
                                                              required.
5. TAKE CARE TO DEAL WITH THE
                                                           [Note 1]
   CATHODE-RAY TUBE
                                                             If you have not the 500V insulation
  In the condition that an explosion-proof cathode-
                                                             resistance meter, use a Tester.
  ray tube is set in this equipment, safety is
  secured against implosion. However, when                 [Note 2]
  removing it or serving from backward, it is                External exposure metal: Antenna terminal
  dangerous to give a shock. Take enough care to                                      Earphone jack
  deal with it.


                               HOW TO ORDER PARTS
Please include the following informations when you order parts. (Particularly the VERSION LETTER.)
1. MODEL NUMBER and VERSION LETTER
   The MODEL NUMBER can be found on the back of each product and the VERSION LETTER can be
   found at the end of the SERIAL NUMBER.
2. PART NO. and DESCRIPTION
   You can find it in your SERVICE MANUAL.


                                           IMPORTANT
  Inferior silicon grease can damage IC's and transistors.
  When replacing an IC's or transistors, use only specified silicon grease (YG6260M).
  Remove all old silicon before applying new silicon.




                                                  A1-1
                                                                          CONTENTS


SERVICING NOTICES ON CHECKING ......................................................................................................                          A1-1
HOW TO ORDER PARTS ...........................................................................................................................                A1-1
IMPORTANT ................................................................................................................................................    A1-1
CONTENTS .................................................................................................................................................    A2-1
GENERAL SPECIFICATIONS ....................................................................................................................                   A3-1~A3-5
DISASSEMBLY INSTRUCTIONS
   1.REMOVAL OF ANODE CAP ..............................................................................................................                      B1-1
   2.REMOVAL AND INSTALLATION OF FLAT PACKAGE IC ...............................................................                                              B2-1, B2-2
SERVICE MODE LIST .................................................................................................................................           C-1
CONFIRMATION OF HOURS USED ..........................................................................................................                         C-1
WHEN REPLACING EEPROM( MEMORY) IC ...........................................................................................                                 C-2
ELECTRICAL ADJUSTMENTS ..................................................................................................................                     D-1~D-5
BLOCK DIAGRAM ......................................................................................................................................          E-1, E-2
PRINTED CIRCUIT BOARDS
   MAIN/CRT ...............................................................................................................................................   F-1~F-4
SCHEMATIC DIAGRAMS
   MICON/TUNER .......................................................................................................................................        G-1, G-2
   CHROMA/SIF/VIF/21PIN ........................................................................................................................              G-3, G-4
   POWER ..................................................................................................................................................   G-5, G-6
   DEFLECTION/CRT .................................................................................................................................           G-7, G-8
   SOUND AMP ..........................................................................................................................................       G-9, G-10
WAVEFORMS .............................................................................................................................................       H-1, H-2
MECHANICAL EXPLODED VIEW ..............................................................................................................                       I-1
MECHANICAL REPLACEMENT PARTS LIST ..........................................................................................                                  J1-1
ELECTRICAL REPLACEMENT PARTS LIST ............................................................................................                                J2-1~ J2-4




                                                                                      A2-1
                                 GENERAL SPECIFICATIONS
G-1   TV                   CRT                     CRT Size / Visual Size           14 inch / 335.4mmV
      System                                       CRT Type                         Normal
                                                   Deflection                       90          degree
                                                   Magnetic Field  BV/BH            +0.45G/0.18G
                           Color System                                             PAL
                           Speaker                                                  1 Speaker
                                                   Position                         Bottom
                                                   Size                              1.5 x3.0 Inch
                                                   Impedance                         8            ohm
                           Sound Output            MAX                                      1.0 W
                                                   10%(Typical)                             0.8 W
                           DDR SECAM                                                            No
                           NTSC3.58(AV)+NTSC4.43                                    Yes
                           PAL60Hz                                                  Yes
G-2   Tuning               Broadcasting System                                      CCIR System B/G
      System               Tuner and               System                           1Tuner
                           Receive CH              Destination                      Ohers
                                                   Tuning System                    F-Synth
                                                   Input Impedance                  VHF/UHF 75 ohm
                                                                                    E2 - E4, X - Z+2, S1 - S10, E5 - E12,
                                                   CH Coverage                      S11 - S41, E21 - E69
                           Intermediate                                             B/G
                           Frequency               Picture(FP)                      38.9 MHz
                                                   Sound(FS)                        33.4 MHz
                                                   FP-FS                            5.5 MHz
                           Preset CH                                                100
                           Stereo/Dual TV Sound                                                 No
                           Tuner Sound Muting                                       Yes
G-3   Power                Power Source            AC                               230V-240V AC 50Hz
                                                   DC
                           Power Consumption                                at AC
                                                                                      44 W at AC 230 V 50 Hz
                                                   Stand by (at AC)                    3 W at AC 230 V 50 Hz
                                                   Per Year                           --   kWh/Year
                           Protector               Power Fuse                       Yes
G-4   Regulation                                   Safety                           CE(EN60065:98)
                                                   Radiation                        CE
                                                   X-Radiation                      -
G-5   Temperature                                  Operation                        +5oC ~ +40oC
                                                   Storage                          -20oC ~ +60oC
G-6   Operating Humidity                                                            Less then 80% RH




                                                    A3-1
                          GENERAL SPECIFICATIONS
G-7   On Screen      Menu                                               Yes
      Display                      Menu Type                            Character
                                   Picture                              Yes
                                                  Contrast              Yes
                                                  Brightness            Yes
                                                  Colour                Yes
                                                  Tint (NTSC Only)      Yes
                                                  Sharpness             Yes
                                   Audio                                            No
                                                  Bass                              No
                                                  Treble                            No
                                                  Balance                           No
                                                  BBE On/Off                        No
                                                  Stable Sound On/Off               No
                                   CH Tuning                            Yes
                                                  Matual                Yes
                                                  Auto                  Yes
                                                  CH Allocation         Yes
                                   Language                             Yes
                                   Clock Set                                        No
                                   On/OffTimer Set                      Yes
                                   On Timer Set                                     No
                                   Pin Code Registration                            No
                                   Panel Lock                           Yes
                                   Nicam Auto Off                                   No
                                   AV Colour System                     Yes
                                   Sound System                                     No
                                   Auto 4:3 Default                                 No
                                   AV2 Output                                       No
                                                    Output Source                   No
                                                    Source                          No
                                   Control Level                        Yes
                                                    Volume              Yes
                                                    Brightness          Yes
                                                    Contrast            Yes
                                                    Colour              Yes
                                                    Tint (NTSC Only)    Yes
                                                    Sharpness           Yes
                                                    Tuning              Yes
                                                    Bass                            No
                                                    Treble                          No
                                                    Balance                         No
                                                    Back Light                      No
                                   Nicam ST                                         No
                                   Tone 1/2 (A/B)                                   No
                                   Surround On/Off                                  No
                                   Pin Code                                         No
                                   AV                                   Yes
                                   Skip                                             No
                                   Channel                              Yes
                                   Hotel Lock                                       No
                                   Sleep Timer                                      No
                                   Wide Mode                                        No
                                   Sound Mute                           Yes
G-8   OSD Language                                                      English French Spanish
                                                                        Germany Italian
                                                                        Polski Turkey Sweden
                                                                        Netherland Portgal
                                                                        Norway Finland Denmark
                                                                        Czech Slovak Hungarian
                                                                        Russian Greek
G-9   Clock and      Sleep Timer                  Max Time              - Min
      Timer                                       Step                     - Min
                     Clock                                                         No
                     On Timer                     Program( On Tim)      Yes
                     Off Timer                    Program( 0ff Tim)     Yes
                     Wake Up Timer                                                 No
                     Timer Back-up (at Power Off Mode)      more than      --    Min       Sec




                                                    A3-2
                       GENERAL SPECIFICATIONS
G-10   Remote     Unit                                                 RK-EY     (CT-835)
       Control    Glow in Dark Remocon                                           No
                  Format                                               NEC
                  Custom Code                                          40-BF h
                  Power Source                  Voltage(D.C)           3V
                                                UM size x pcs          UM-4 x 2 pcs
                  Total Keys                                             32    Keys
                  Keys                          Power                  Yes
                                                1                      Yes
                                                2                      Yes
                                                3                      Yes
                                                4                      Yes
                                                5                      Yes
                                                6                      Yes
                                                7                      Yes
                                                8                      Yes
                                                9                      Yes
                                                0                      Yes
                                                Volume Up / +          Yes
                                                Volume Down / -        Yes
                                                Previous               Yes
                                                Select Picture         Yes
                                                Menu                   Yes
                                                OK(Enter)              Yes
                                                EXIT                              No
                                                Audio Select                      No
                                                Sleep Timer                       No
                                                Mute                   Yes
                  T'TEXT Keys                   TEXT / MIX / TV        Yes
                                                CH Up / Page Up        Yes
                                                CH Down / Page Down    Yes
                                                Red                    Yes
                                                Green                  Yes
                                                Yellow                 Yes
                                                Cyan                   Yes
                                                TEXT F/T/B             Yes
                                                Reveal                 Yes
                                                TIMED PAGE(SUB PAGE)   Yes
                                                CALL / TEXT INDEX      Yes
                                                INPUT SELECT           Yes
                                                TEXT HOLD              Yes
                                                TIME / TXCL            Yes
G-11   Features   Auto Degauss                                         Yes
                  Auto Shut Off                                        Yes
                  Canal+                                                          No
                  CATV                                                            No
                  Anti-theft(Back Up 30 Min.)                                     No
                  Memory(Last CH)                                      Yes
                  Memory(Last Volume)                                  Yes
                  BBE                                                             No
                  Auto Search                                          Yes
                  CH Allocation                                        Yes
                  Just Clock Function                                             No
                  Game Position                                                   No
                  CH Label                                                        No
                  VM Circuit                                                      No
                  Full OSD                                                        No
                  Unitext                                                         No
                  Fastext                                              Yes
                  Top Text                                                        No
                  Premiere                                                        No
                  Comb Filter                                                     No
                                                                           Lines
                  Auto CH Memory                                                  No
                  Stable Sound                                                    No
                  Auto Set Up                                                     No
                  FBT Leak Test Protect                                Yes
                  Power ON Memory                                      Yes
                  Previous (Quick View)                                Yes
                  Panel Lock                                           Yes
                  Double Focus & Dynamic Focus                                    No
                  Wss Signal Wide Change                                          No
                  Virtual Dolby Surround                                          No
                  Hotel Lock                                                      No




                                                 A3-3
                          GENERAL SPECIFICATIONS
G-12   Accessories   Owner's Manual              Language                     Swedish, Norwegian, Danish,
                                                                              Finnish, Turkish
                                                 w/Guarantee Card                         No
                     Remote Control Unit                                      Yes
                     Rod Antenna                                              Yes
                                                 Poles                         2Pole
                                                 Terminal                      D-type
                     Loop Antenna                                                         No
                                                 Terminal                      -
                     U/V Mixer                                                            No
                     DC Car Cord (Center+)                                                No
                     Guarantee Card                                                       No
                     Warning Sheet                                                        No
                     Circuit Diagram                                                      No
                     Antenna Change Plug                                                  No
                     Service Facility List                                                No
                     Important Safeguard                                      Yes (Owner's Manual In)
                     Dew/AHC Caution Sheet                                                No
                     AC Plug Adapter                                                      No
                     Quick Set-up Sheet                                       Yes
                     Battery                                                  Yes
                                                 UM size x pcs                UM-4 x 2 pcs
                                                 OEM Brand                                No
                     AC Cord                                                              No
                     AV Cord (2Pin-1Pin)                                                  No
                     Registration Card                                                    No
                     PTB Sheet                                                            No
                     300 ohm to 75 ohm Antenna Adapter                                    No
G-13   Interface     Switch         Front        Power (Tact Sw)                          No
                                                 System Select                            No
                                                 Main Power SW                Yes
                                                 Sub Power                                No
                                                 Channel Up                   Yes
                                                 Channel Down                 Yes
                                                 Volume Up                    Yes
                                                 Volume Down                  Yes
                                    Rear         AC/DC                                    No
                                                 TV/CATV Selector                         No
                                                 Degauss                                  No
                                                 Main Power SW                            No
                     Indicator                   Power                                    No
                                                 Stand-by                                 No
                                                 Stand-by/ON , On Timer       Yes(Red , Green)
                                                 Stand-by/ON                              No
                                                 On Timer                                 No
                     Terminals      Front        Video Input                  Yes
                                                 Audio Input                  Yes
                                                 Other Terminal               EAR Phone
                                    Rear         Video Input(Rear1)                        No
                                                 Video Input(Rear2)                        No
                                                 Audio Input(Rear1)                        No
                                                 Audio Input(Rear2)                        No
                                                 Video Output                              No
                                                 Audio Output                              No
                                                 Euro Scart(21Pin)                         No
                                                    S-INPUT
                                                 Euro Scart(21Pin)            Yes ( x1 )
                                                    RGB-INPUT                 Yes ( x1 )
                                                 Component Input                           No
                                                 Diversity                                 No
                                                 Ext Speaker                               No
                                                 DC Jack 12V(Center +)                     No
                                                 VHF/UHF Antenna Input        D Type
                                                 AC Outlet                                No
G-14   Set Size                                  Approx.     W x D x H (mm)      362 x 360 x 373
G-15   Weight                                    Net (Approx.)                  9.5 kg    ( --- lbs)
                                                 Gross (Approx.)               11.5kg     ( ---lbs)




                                                  A3-4
                GENERAL SPECIFICATIONS
G-16   Carton      Master Carton                                               No
                                   Content                         ----        Sets
                                   Material                           --       /--
                                   Dimensions      W x D x H(mm)    -- x -- x --
                                   Description of Origin           Yes
                   Gift Box                                        Yes
                                   Material                        Double/Brown
                                   Dimensions      W x D x H(mm)    440 x 408 x 380
                                   Design                          As per Buyer's
                                   Description of Origin           Yes
                   Drop Test                                          Natural Dropping At 1 Corner / 3
                                                                            Edges / 6 Surfaces
                                    Height (cm)                    62
                   Container Stuffing                              866         Sets/40' container




                                    A3-5
                                         DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF ANODE CAP                                                 3. After one side is removed, pull in the opposite direction to
                                                                           remove the other.
Read the following NOTED items before starting work.
                                                                        NOTE
* After turning the power off there might still be a potential
  voltage that is very dangerous. When removing the                       Take care not to damage the Rubber Cap.
  Anode Cap, make sure to discharge the Anode Cap's                     INSTALLATION
  potential voltage.
                                                                        1. Clean the spot where the cap was located with a small
* Do not use pliers to loosen or tighten the Anode Cap
                                                                           amount of alcohol. (Refer to Fig. 1-3.)
  terminal, this may cause the spring to be damaged.
REMOVAL
1. Follow the steps as follows to discharge the Anode Cap.                                        Location of Anode Cap
   (Refer to Fig. 1-1.)
   Connect one end of an Alligator Clip to the metal part of a
   flat-blade screwdriver and the other end to ground.
   While holding the plastic part of the insulated Screwdriver,
   touch the support of the Anode with the tip of the
   Screwdriver.
   A cracking noise will be heard as the voltage is discharged.



                                  GND on the CRT
                                                                                                                             Fig. 1-3

                                                                        NOTE
                                                                          Confirm that there is no dirt, dust, etc. at the spot where
                                                                          the cap was located.
                                                                        2. Arrange the wire of the Anode Cap and make sure the
                                                                           wire is not twisted.
                                                                        3. Turn over the Rubber Cap. (Refer to Fig. 1-4.)




          Screwdriver                        CRT
                                   Support
                        Alligator Clip

            GND on the CRT
                                                      Fig. 1-1

2. Flip up the sides of the Rubber Cap in the direction of the                                                               Fig. 1-4
   arrow and remove one side of the support.
   (Refer to Fig. 1-2.)                                                 4. Insert one end of the Anode Support into the anode button,
                                                                           then the other as shown in Fig. 1-5.
         Rubber Cap




                  CRT
                            Support                                                              Support
                                                     Fig. 1-2
                                                                                           CRT
                                                                                                                             Fig. 1-5

                                                                        5. Confirm that the Support is securely connected.
                                                                        6. Put on the Rubber Cap without moving any parts.


                                                                 B1-1
                                      DISASSEMBLY INSTRUCTIONS
2. REMOVAL AND INSTALLATION OF                                          3. When IC starts moving back and forth easily after
                                                                           desoldering completely, pickup the corner of the IC using
   FLAT PACKAGE IC                                                         a tweezers and remove the IC by moving with the IC
                                                                           desoldering machine. (Refer to Fig. 2-3.)
REMOVAL
                                                                          NOTE
1. Put the Masking Tape (cotton tape) around the Flat
                                                                             Some ICs on the PCB are affixed with glue, so be
   Package IC to protect other parts from any damage.                        careful not to break or damage the foil of each IC
   (Refer to Fig. 2-1.)                                                      leads or solder lands under the IC when removing it.
  NOTE
     Masking is carried out on all the parts located within                                                                Blower type IC
     10 mm distance from IC leads.                                                                                         desoldering
                                                                                                                           machine


       Masking Tape                          IC
       (Cotton Tape)




                                                                          Tweezers




                                                      Fig. 2-1
                                                                                         IC
                                                                                                                                      Fig. 2-3
2. Heat the IC leads using a blower type IC desoldering
   machine. (Refer to Fig. 2-2.)
                                                                        4. Peel off the Masking Tape.
  NOTE
     Do not add the rotating and the back and forth                     5. Absorb the solder left on the pattern using the Braided
     directions force on the IC, until IC can move back and                Shield Wire. (Refer to Fig. 2-4.)
     forth easily after desoldering the IC leads completely.              NOTE
                                                                             Do not move the Braided Shield Wire in the vertical
                                                                             direction towards the IC pattern.
                                          Blower type IC
                                          desoldering machine




                                                                              Braided Shield Wire


                                                                                                                     Soldering Iron




             IC
                                                                                                        IC pattern                    Fig. 2-4
                                                      Fig. 2-2




                                                                 B2-1
                                                     DISASSEMBLY INSTRUCTIONS
INSTALLATION                                                                              4. When bridge-soldering between terminals and/or the
                                                                                             soldering amount are not enough, resolder using a Thin-
1. Take care of the polarity of new IC and then install the                                  tip Soldering Iron. (Refer to Fig. 2-8.)
   new IC fitting on the printed circuit pattern. Then solder
   each lead on the diagonal positions of IC temporarily.
   (Refer to Fig. 2-5.)
                                                                                                 Thin-tip Soldering Iron                 IC




                              Soldering Iron




                                                                                                                                               Fig. 2-8

                                                                                          5. Finally, confirm the soldering status on four sides of the
              Solder temporarily                              Solder temporarily
                                                                                             IC using a magnifying glass.
                                                                                             Confirm that no abnormality is found on the soldering
                                                                        Fig. 2-5             position and installation position of the parts around the
                                                                                             IC. If some abnormality is found, correct by resoldering.
2. Supply the solder from the upper position of IC leads                                    NOTE
   sliding to the lower position of the IC leads.
                                                                                               When the IC leads are bent during soldering and/or
    (Refer to Fig. 2-6.)
                                                                                               repairing, do not repair the bending of leads. If the
                                                                                               bending of leads are repaired, the pattern may be
                                                                                               damaged. So, be always sure to replace the IC in this
                                                                                               case.



     Solder                                          Soldering Iron




      IC                           Supply soldering
                                   from upper position
                                   to lower position




                                                                       Fig. 2-6

3. Absorb the solder left on the lead using the Braided
   Shield Wire. (Refer to Fig. 2-7.)
   NOTE
      Do not absorb the solder to excess.


                               Soldering Iron
                                                               IC




        Braided Shield Wire



                                                                       Fig. 2-7




                                                                                   B2-2
                                              SERVICE MODE LIST
This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily.
To enter the Service Mode, press both set key and remote control key for more than 2 seconds.

    Set Key       Remocon Key                                                Operations
                                     Reset the user setting items (PICTURE, VOLUME and LANGUAGE) to the initial state
 VOL. (-) MIN            0
                                     for delivery.

                                     Initialization of the factory.
                                     NOTE: Do not use this for the normal servicing.
 VOL. (-) MIN            1
                                               If you set a factory initialization, the memories are reset such as the
                                               channel setting, and the POWER ON total hours.

                                     POWER ON total hours is displayed on the screen.
                                     Refer to the "CONFIRMATION OF HOURS USED".
 VOL. (-) MIN            6
                                     Can be checked of the INITIAL DATA of MEMORY IC.
                                     Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".

                                     Writing of EEPROM initial data.
 VOL. (-) MIN            8
                                     NOTE: Do not use this for the normal servicing.

                                     Display of the Adjustment MENU on the screen.
 VOL. (-) MIN            9
                                     Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display Adjustment).




                                   CONFIRMATION OF HOURS USED
POWER ON total hours can be checked on the screen. Total hours are displayed in 16 system of notation.
NOTE: If you set a factory initialization, the total hours is reset to "0".
1. Set the VOLUME to minimum.                                          ADDRESS   DATA

2. Press both VOL. DOWN button on the set and Channel
   button (6) on the remote control for more than 2 seconds.
3. After the confirmation of using hours, turn off the power.         INIT 01 00           Initial setting content of MEMORY IC.
                                                                      CRT ON 0010          POWER ON total hours.
                                                                                            = (16 x 16 x 16 x thousands digit value)
                                                                                            + (16 x 16 x hundreds digit value)
                                                                                            + (16 x tens digit value)
                                                                         FIG. 1             + (ones digit value)




                                                                C-1
                            WHEN REPLACING EEPROM (MEMORY) IC
If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to
ensure correct data settings while making reference to TABLE 1.
Note: No need setting for the position of the mark @ due to the adjustment value.

                INI   +0    +1   +2    +3    +4    +5    +6     +7      +8     +9    +A    +B    +C    +D    +E    +F
                00    ---   00   00    00    00    41    80      48      00    23    27    01    03    30    06    14

                10    10    00   80    80    80    3C    40      @       @     9F    @     80    00    44    @     @

                20    @     @    @     @     C0    00    @       20      @     00    18    @     00    @     @     0F

                30    00    @    @     @     07    00    00      00      00    00    00    00    00    00    00    00

                40    7F    6F   5F    4F    3F    39    34      2F     2D     2B    29    27    25    23    21    20

                50    1F    1E   1D    1C    1B    1A    19      18      17    16    15    14    13    13    12    12

                60    11    11   10    10    0F    0F    0E     0E      0D     0D    0C    0C    0B    0B    0A    0A

                70    09    09   08    08    07    07    06      05      04    04    03    03    03    02    02    02

                80    22    23   CD    CF    D2    D6    D9      96      98    9C    9D    55    56    58    5A    5C

                90    5D    5E   ---   ---   ---   ---   ---     ---     ---   ---   ---   ---   ---   ---   ---   ---

                                                               Table 1
1. Enter DATA SET mode by setting VOLUME to minimum.
2. Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 2 seconds.
   ADDRESS and DATA should appear as FIG 1.

                                                           ADDRESS      DATA




                                                         INIT 01 00
                                                         CRT ON 0010



                                                               Fig. 1
3. ADDRESS is now selected and should "blink". Using the VOL. +/- button on the remote, step through the ADDRESS until
   required ADDRESS to be changed is reached.
4. Press OK to select DATA. When DATA is selected, it will "blink".
5. Again, step through the DATA using VOL. +/- button until required DATA value has been selected.
6. Pressing OK will take you back to ADDRESS for further selection if necessary.
7. Repeat steps 3 to 6 until all data has been checked.
8. When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.
The unit will now have the correct DATA for the new MEMORY IC.




                                                                C-2
                                                 ELECTRICAL ADJUSTMENTS
1. ADJUSTMENT PROCEDURE                                                    2. BASIC ADJUSTMENTS
Read and perform these adjustments when repairing the                      2-1: CONSTANT VOLTAGE
circuits or replacing electrical parts or PCB assemblies.                       Place the set with Aging Test for more than 5 minutes.
                                                                           1.
CAUTION                                                                    2.   Connect the digital voltmeter to TP501.
                                                                           3.   Set condition is AV MODE without signal.



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