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TOSHIBA 2163 DB                                                                                                                                    1
                                                                                                               AUTOMATIC DEGAUSSING                                 8. Check the purity of the red and blue raster.           wedge in either upper space. Remove cover
                               General Information                                                                                                                                                                            paper and stick the wedge on picture tube to                Service Mode
                                                                                                               A degaussing coil is mounted around the picture                                                                fix the yoke.
                                                                                                               tube so that external degaussing after moving                                                               7. Detach the temporarily mounted wedge and       1. ENTERING TO SERVICE MODE
                                        C6S Chassis                                                            the receiver is normally unnecessary, providing                                                                put it in another upper space. Stick it on
                                                                                                               the receiver is properly degaussed upon                                                                        picture tube to fix the yoke.                  1) Press     button once on Remote Control.
                                                                                                               installation. The degaussing coil operates for                                                              8. After fixing three wedges, recheck overall
                                                                                                               about 1 second after the power to the receiver is                                                              convergence. Tighten the screw firmly to fix
                                                             receiver should be supplied via a suitable        switched ON. If the set is moved or faced in a                                                                 the yoke and check the yoke is firm.
    Safety Instructions                                      isolating transformer of adequate rating.         different direction, the power switch must be
                                                                                                               switched off at least 30 minutes in order that the
                                                                                                                                                                                                                           9. Stick three adhesive tapes on wedges as
                                                                                                                                                                                                                              shown in figure 1.
                                                          4. Replace blown fuses within the receiver with
                                                             the fuse specified in the parts list.             automatic degaussing circuit operates properly.                                                                                                                    Sound Mute
 WARNING: BEFORE SERVICING THIS                                                                                Should the chassis or parts of the cabinet
                                                          5. When replacing wires or components to
 CHASSIS, READ THE "X-RAY RADIATION                                                                            become magnetized to cause poor colour purity,
                                                             terminals or tags, wind the leads around the
 PRECAUTION", "SAFETY PRECAUTION" AND                                                                          use an external degaussing coil. Slowly move                                                                                                                  2) Press     button again to keep pressing.
                                                             terminal before soldering. When replacing
 "PRODUCT SAFETY NOTICE" INSTRUCTIONS                                                                          the degaussing coil around the faceplate of the
                                                             safety components identified by the interna-
 BELOW.                                                                                                        picture tube, the sides and front of the receiver
                                                             tional hazard symbols on the circuit diagram
                                                             and parts list, it must be a Toshiba approved     and slowly withdraw the coil to a distance of
 X-RAY RADIATION PRECAUTION                                                                                    about 2 m before disconnecting it from AC
                                                             type and must be mounted as the original.
                                                          6. Keep wires away from high temperature             source. If colour shading still persists, perform
 1. The E.H.T. must be checked every time the                                                                  the COLOUR PURITY ADJUSTMENT and
                                                             components.
    receiver is serviced to ensure that the C.R.T.                                                             CONVERGENCE ADJUSTMENTS procedures.
    does not emit X-ray radiation as result of
    excessive E.H.T. voltage. The nominal E.HT.           PRODUCT SAFETY NOTICE
                                                                                                               HIGH VOLTAGE CHECK                                                                                                                                            3) Keep pressing the        button, press MENU
    for this receiver is 28.1 kV at zero beam
                                                          Many electrical and mechanical components in                                                                                                                                                                          button on TV set.
    current (minimum brightness) operating at
                                                          this chassis have special safety-related             CAUTION: There is no HIGH VOLTAGE
    220V a.c. The maximum E.H.T. voltage
                                                          characteristics. These characteristics are often     ADJUSTMENT on this chassis.                                                                                                                                       RCUT           S
    permissible in any operating circumstances
                                                          passed unnoticed by a visual inspection and the                                                                                                                                                                        40H
    must not exceed 29.5 kV. When checking the
                                                          X-ray radiation protection afforded by them          1. Connect an accurate high voltage meter to
    E.H.T., use the `High Voltage Check' proce-
                                                          cannot necessarily be obtained by using                 the second anode of the picture tube.
    dure in this manual using an accurate E.H.T.
                                                          replacements rated at higher voltages or             2. Turn on the receiver. Set the BRIGHTNESS
    voltmeter.
                                                          wattage, etc. Components which have these               and CONTRAST Controls to minimum (zero
 2. The only source of X-RAY radiation in this
                                                          special safety characteristics in this manual and       beam current).
    receiver is the C.R.T. To prevent X-ray
                                                          its supplements are identified by the interna-       3. High voltage will be measured below 29.5 kV.                                                                                                               2. DISPLAYING THE ADJUSTMENT MENU
    radiation, the replacement C.R.T. must be                                                                                                                       Fig. 1
                                                          tional hazard symbols on the schematic               4. Rotate the BRIGHTNESS Control to both                                                                                                                      Press MENU button on TV.
    identical to the original fitted as specified in
                                                          diagram and parts list. Before replacing any of         extremes to be sure the high voltage does not
    the Parts List.                                                                                                                                                 CONVERGENCE ADJUSTMENTS
                                                          these components read the parts list in this            exceed the limit of 29.5 kV under any                                                                                                                      Adjustment mode                    Normal operation mode
 3. Some components used in this receiver have                                                                                                                                                                             Fig. 2
                                                          manual carefully. Substitute replacement                conditions.
    safety related characteristics preventing the                                                                                                                   NOTE: Before attempting any convergence
                                                          components which do not have the same safety                                                                                                                                                                        RCUT             Address      Press                S
    C.R.T. from emitting X-ray radiation. For                                                                                                                       adjustments, the receiver should be operated for       Centre Convergence by Convergence
    continued safety, replacement component               characteristics as specified in the parts list may   FOCUS ADJUSTMENT                                                                                                                                               40H              Data            
                                                          create X-ray radiation.                                                                                   at least fifteen minutes.                              Magnets                                                                       
    should only be made after referring the
    Product Safety Notice below.                                                                               Adjust FOCUS Control on FLYBACK TRANS.                                                                                                                                                       Press
                                                                                                               (T461) for well defined scanning lines in the        CENTRE CONVERGENCE ADJUSTMENT
                                                                                                               centre area on the screen.                                                                                                                                    3. SELECTING THE ADJUSTING ITEMS
 SAFETY PRECAUTION                                           Installation and Service                                                                               1. Use the cross-dot pattern from among the                                                              Every pressing of CHANNEL v button changes
                                                                                                                                                                       built-in test signals.                                                                                the adjustment items in the following order.
 1. This receiver has a nominal working E.H.T.                     Adjustments                                 Set-up Adjustment
                                                                                                                                                                    2. Set the brightness and contrast for well                                                              (w button for reverse order.)
    voltage of 26.0 kV. Extreme caution should be                                                                                                                      defined pattern.
    exercised when working on the receiver with                                                                The following adjustments should be made
                                                          GENERAL INFORMATION                                  when a complete realignment is required or a         3. Adjust two tabs of the 4-Pole Magnets to                                                              4. ADJUSTING THE DATA
    the back removed. Do not attempt to service                                                                                                                        change the angle between them (See figure
                                                                                                               new picture tube is                                                                                                                                           Pressing of VOLUME v or w button will change
    this receiver if you are not conversant with the                                                                                                                   2.) and superimpose red and blue vertical
                                                          All adjustments are thoroughly checked and           installed.                                                                                                                                                    the value of data in the range from 00 to FF. The
    precautions and procedures for working on                                                                                                                          lines in the centre area of the picture screen.
                                                          corrected when the receiver leaves the factory.      Perform the adjustments in order as follows                                                                                                                   variable range depends on the adjusting item.
    high voltage equipment. When handling or                                                                                                                        4. Turn the both tabs at the same time keeping
                                                          Therefore the receiver should operate normally       1. Color Purity
    working on the C.R.T., always discharge the                                                                                                                        the angle constant to superimpose red and
                                                          and produce proper colour and B/W pictures           2. Convergence                                                                                                                                                5. EXIT FROM SERVICE MODE
    anode to the receiver chassis before remov-                                                                                                                        blue horizontal lines at the center of the
                                                          upon installation. However, several minor            3. White Balance                                                                                                                                              Press POWER button to turn off the TV once.
    ing the anode cap. The C.R.T., if broken, will                                                                                                                     screen.
                                                          adjustments may be required depending on the
    violently expel glass fragments. Use shatter                                                                                                                    5. Adjust two tabs of 6-Pole Magnets to superim-
                                                          particular location in which the receiver is         Note: The PURITY/CONVERGENCE MAGNET
    proof goggles and take extreme care while                                                                                                                          pose red/blue line and green one. Adjusting
                                                          operated.                                            assembly and rubber wedges need mechanical
    handling. Do not hold the C.R.T. by the neck                                                                                                                       the angle affects the vertical lines and rotating
                                                          This receiver is shipped completely in card-         positioning. Refer to figure 1.
    as this is a very dangerous practice.                                                                                                                              both magnets affects the horizontal lines.
                                                          board carton. Carefully draw out the receiver
 2. It is essential that to maintain the safety of the                                                                                                              6. Repeat adjustments 3, 4, 5 keeping in mind
                                                          from the carton and remove all packing               COLOR PURITY ADJUSTMENT
    customer all cable forms be replaced exactly                                                                                                                       red, green and blue movement, because 4-
                                                          materials. Plug the power cord into a conven-
    as supplied from factory.                                                                                                                                          Pole Magnets and 6-Pole Magnets have
                                                          ient 220 volts 50 Hz AC two pin power outlet.        NOTE: Before attempting any purity adjust-
 3. A small part of the chassis used in this                                                                                                                           mutual interaction and make dot movement
                                                          Turn the receiver ON. Check and adjust all the       ments, the receiver should be operated for at
    receiver is, when operating, at approximately                                                                                                                      complex.
                                                          customer controls such as BRIGHTNESS,                least fifteen minutes.
    half mains potential at all times. It is therefore
                                                          CONTRAST and COLOUR Controls to obtain
    essential in the interest of safety that when                                                                                                                   CIRCUMFERENCE CONVERGENCE
                                                          natural colour or B/W picture.                       1. Demagnetize the picture tube and cabinet
    serving or connecting any test equipment the                                                                                                                    ADJUSTMENT
                                                                                                                  using a degaussing coil.
                                                                                                               2. Set the brightness and contrast to maximum.
                                                                                                               3. Use a green raster from among the built-in        1. Loosen the clamping screw of deflection yoke
                                                                                                                                                                       slightly to allow the yoke to tilt.
                        Recommended Safety Parts                                                                  test signals. See page 12.
                                                                                                               4. Loosen the clamp screw holding the yoke and       2. Temporarily put a wedge as shown in figure 1.
                                                                                                                  slide the yoke backward or forward to provide        (Do not remove cover paper on adhesive part
Item        Part No.                  Description                                                                 vertical green belt (zone) in the picture            of the wedge.)
 L462                                 DY, Supplied with V901                                                      screen.                                           3. Tilt front of the deflection yoke up or down to
 L901       23200205                  Coil, Degaussing, TSB-2333AR                                             5. Remove the Rubber Wedges.                            obtain better convergence in circumference.
 T401       23224983                  Transformer, Horiz. Drive,TLN1039
                                                                                                               6. Rotate and spread the tabs of the purity             (See figure 3.) Push the mounted wedge into
 T461       23236510                  Transformer, Flyback, TFB4123BE                                                                                                  the space between picture tube and the yoke
 T801       23211858                  Line Filter, TRF3139                                                        magnet (See figure 2.) around the neck of the
 T862       23217346                  Transformer, Converter, TPW3365AR                                           picture tube until the green belt is in the          to fix the yoke temporarily.
 Q404       23314375                  Transistor, 0N4409(508D)                                                    center of the screen. At the same time, enter     4. Put other wedge into bottom space and
 Q862       A8643108                  Photo Coupler, TLP621(GR-LF)                                                                                                     remove the cover paper to stick.
 F470       23144501                  Fuse, 0.8A                                                                  the raster vertically.
 F801       23144507                  Fuse, 3.15A                                                              7. Slowly move the yoke forward or backward          5. Tilt front of the yoke right or left to obtain
 P801       23372012                  Power Cord                                                                  until a uniform green screen is obtained.            better convergence in circumference. (See
 F801       23344395                  Switch, Power
                                                                                                                  Tighten the clamp screw of the yoke tempo-           figure 3.)
 V901A      23902067                  Socket, CRT, 10P                                                                                                              6. Keep the yoke position and put another              Fig. 3. Dot Movement Pattern
 V901       23312670                  Picture Tube, A51EAL155X01                                                  rarily.


                        Safety Instuctions / Installation & Service Adjustments / Adjustments Cont'd / Safety Parts / Service Mode / Electrical Adjustments ...Cont'd
                                                                                        AV Diagram / Differences Table / Main Diagram / Text Diagram / CRT Diagram
TOSHIBA 2163 DB                                                                                                                                 2
                                                                                                             Signals:                                                ITEM:                                                   To correct white balance in light area, select           Item: Slave address 36 [BRTC]
 Adjustments Cont'd                                                                                          



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