Service Manuals, User Guides, Schematic Diagrams or docs for : TOSHIBA Video W-614 hfe_toshiba_w-614s_service_en

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                 FILE NO. 120-200185



                           JUN, 2001

1. Precautions

2. Reference Information

3. Product Specifications

4. Disassembly and Reassembly

5. Alignment and Adjustment

6. Exploded View

7. Replacement Parts List

8. Block Diagram

9. PCB Diagrams

10. Schematic Diagrams
1. Precautions
1. Be sure that all of the built-in protective devices are
   replaced. Restore any missing protective shields.                                                    (READING SHOULD
                                                                                                          NOT BE ABOVE
2. When reinstalling the chassis and its assemblies, be              DEVICE                   CURRENT
                                                                     UNDER                     TESTER
   sure to restore all pretective devices, including :                TEST
   control knobs and compartment covers.
                                                                                 TEST ALL
                                                                              EXPOSED METER
3. Make sure that there are no cabinet openings                                 SURFACES
   through which people--particularly children                           2-WIRE CORD
   --might insert fingers and contact dangerous
   voltages. Such openings include the spacing                         ALSO TEST WITH                       EARTH
                                                                        PLUG REVERSED                      GROUND
   between the picture tube and the cabinet mask,                    (USING AC ADAPTER
                                                                      PLUG AS REQUIRED)
   excessively wide cabinet ventilation slots, and
   improperly fitted back covers.
                                                                                Fig. 1-1 AC Leakage Test
  If the measured resistance is less than 1.0 megohm
  or greater than 5.2 megohms, an abnormality exists         7. Antenna Cold Check :
  that must be corrected before the unit is returned            With the unit's AC plug disconnected from the
  to the customer.                                              AC source, connect an electrical jumper across the
                                                                two AC prongs. Connect one lead of the ohmmeter
4. Leakage Current Hot Check (See Fig. 1-1) :                   to an AC prong.
   Warning : Do not use an isolation transformer                Connect the other lead to the coaxial connector.
   during this test. Use a leakage current tester or a
   metering system that complies with American               8. High Voltage Limit :
   National Standards Institute (ANSI C101.1,                   High voltage must be measured each time
   Leakage Current for Appliances), and Underwriters            servicing is done on the B+, horizontal deflection
   Laboratories (UL Publication UL1410, 59.7).                  or high voltage circuits.

5. With the unit completely reassembled, plug the AC           Heed the high voltage limits. These include the
   line cord directly the power outlet. With the unit's        X-ray protection Specifications Label, and the
   AC switch first in the ON position and then OFF,            Product Safety and X-ray Warning Note on the
   measure the current between a known erath                   service data schematic.
   ground (metal water pipe, conduit, etc.) and all
   exposed metal parts, including : antennas, handle         9. Some semiconductor ("solid state") devices are
   brackets, metal cabinets, screwheads and control             easily damaged by static electricity.
   shafts. The current measured should not exceed               Such components are called Electrostatically
   0.5 milliamp. Reverse the power-plug prongs in the           Sensitive Devices (ESDs); examples include
   AC outlet and repeat the test.                               integrated circuits and some field-effect transistors.
                                                                The following techniques will reduce the
6. X-ray Limits :                                               occurrence of component damage caused by static
   The picture tube is designed to prohibit X-ray               electricity.
   emissions. To ensure continued X-ray protection,
   replace the picture tube only with one that is the        10. Immediately before handling any semiconductor
   same type as the original.                                    components or assemblies, drain the electrostatic
                                                                 charge from your body by touching a known
                                                                 earth ground. Alternatively, wear a discharging
                                                                 Wrist-strap device. (Be sure to remove it prior to
                                                                 applying power--this is an electric shock

Toshiba                                                                                                                   1-1

11. High voltage is maintained within specified limits    18. Picture Tube Implosion Warning :
    by close-tolerance, safety-related components and         The picture tube in this receiver employs
    adjustments. If the high voltage exceeds the              "integral implosion" protection. To ensure
    specified limits, check each of the special               continued implosion protection, make sure that
    components.                                               the replacement picture tube is the same as the
12. Design Alteration Warning :
    Never alter or add to the mechanical or electrical    19. Do not remove, install or handle the picture tube
    design of this unit. Example : Do not add                 without first putting on shatterproof goggles
    auxiliary audio or video connectors.                      equipped with side shields. Never handle the
    Such alterations might create a safety hazard.            picture tube by its neck. Some "in-line" picture
    Also, any design changes or additions will void           tubes are equipped with a permanently attached
    the manufacturer's warranty.                              deflection yoke; do not try to remove such
                                                              "permanently attached" yokes from the picture
13. Hot Chassis Warning :                                     tube.
    Some TV receiver chassis are electrically
    connected directly to one conductor of the AC         20. Product Safety Notice :
    power cord. If an isolation transformer is not            Some electrical and mechanical parts have special
    used, these units may be safely serviced only if          safety-related characteristics which might not be
    the AC power plug is inserted so that the chassis         obvious from visual inspection. These safety
    is connected to the ground side of the AC source.         features and the protection they give might be
                                                              lost if the replacement component differs from the
      To confirm that the AC power plug is inserted           original--even if the replacement is rated for
      correctly, do the following : Using an AC               higher voltage, wattage, etc.
      voltmeter, measure the voltage between the
      chassis and a known earth ground. If the reading       Components that are critical for safety are
      is greater than 1.0V, remove the AC power plug,        indicated in the circuit diagram by shading,
      reverse its polarity and reinsert. Re-measure the      (     or     ).
      voltage between the chassis and ground.                Use replacement components that have the same
                                                             ratings, especially for flame resistance and
14. Some TV chassis are designed to operate with 85          dielectric strength specifications. A replacement
    volts AC between chassis and ground, regardless          part that does not have the same safety
    of the AC plug polarity. These units can be safely       characteristics as the original might create shock,
    serviced only if an isolation transformer inserted       fire or other hazards.
    between the receiver and the power source.

15. Never defeat any of the B+ voltage interlocks.
    Do not apply AC power to the unit (or any of its
    assemblies) unless all solid-state heat sinks are
    correctly installed.

16. Always connect a test instrument's ground lead to
    the instrument chassis ground before connecting
    the positive lead; always remove the instrument's
    ground lead last.

17. Observe the original lead dress, especially near
    the following areas : Antenna wiring, sharp
    edges, and especially the AC and high voltage
    power supplies. Always inspect for pinched, out-
    of-place, or frayed wiring. Do not change the
    spacing between components and the printed
    circuit board. Check the AC power cord for
    damage. Make sure that leads and components
    do not touch thermally hot parts.

1-2                                                                                                       Toshiba

                Identification of Controls
                  See the page in    for details.
                  This manual shows the names of buttons in italics.

               Front Panel                                                                                                      19   PLAY                       VCR Display
                                                                                                                                19   STOP
                                                       Cassette compartment                         REW                              FF                                                                                    Hi-Fi indicator
                 14   POWER            CHANNEL                                                                                  19                                        Cassette indicator
                                                                 18                                  19
                                                                                                                                                                                                                                                                                                2-1 Operation of Controls

                                        24                                                                                           18    EJECT                                                                                    Timer recording indicator
                                                                                                                                                                                                                                                                                                                            2. Reference Information


                                                                                                                                                                             VCR                                                 SAP
                                                  10            9          VCR Display
                        LINE IN 2 AUDIO
                        (L/MONO, R) jacks        Remote
              LINE IN 2 VIDEO jack         24
                                          REC                                                                                                                       VCR indicator                                         SAP indicator
               Remote Control                                                                                                                                                                      indicator
                                                EJECT 18
                                                                 DISPLAY   EJECT                 POWER
                                              DISPLAY 22                                                              14 POWER
                       To operate your TV.          TV 29        VCR         TV
                                                                                                                                                                Rear Panel
                                                                                                                      19 CH/TRK
                       To operate this VCR.      VCR 14                                           CH/TRK

                                           CABLE BOX 31           1          2             3
                                                                                                                                                                                                                                   RF IN (FROM ANT.) terminal
                                        Number buttons 16         4          5             6
                                                                                                                                                                                        LINE OUT AUDIO jacks (L, R)
                                                                                                  TV VOL              29 TV VOL
                                                                   7         8             9                                                                                                                             LINE IN 1 AUDIO jacks (L, R)
                                                                I.SELECT                          TV/VCR
                                              I. SELECT 24                   0             100
                                                                                                                      24 TV/VCR
                                                                 SP/LP      REC                    TIMER              17 100
                                                SP/SLP 24                                                                                                                                                                                LINE   LINE                  IN
                                                                                                                                                                                                                                         OUT    IN 1               (FROM ANT.)

                                                                                                                      26 TIMER                                                                                                                         R

                                                  REC 24                                                                                                                                                                                           AUDIO
                                                                                  PLAY                                                                                                                                                                               OUT RF
                                                                                                                      19 PLAY *                                                                                                                    VIDEO            (TO TV)

                                                                                                                                                                                                                                                           3   4

                                                                   REW            CURSOR
                                                                                                  FF                  19 FF *
                                                 REW * 19
                                                                 SLOW                            PAUSE / S T I L L
                                                 SLOW 21                          STOP                                                                                                                                LINE IN 1 VIDEO jack
                                                                                                                      20 PAUSE/STILL                                                       LINE OUT VIDEO jack
                                                                                                                                                                       To wall outlet
                                                STOP * 19                                                                                                                                                                            CH selector (3/4)
                                                                 PROG.     CANCEL                   ENTER
                                                PROG. 14                               COUNT
                                                                                                                      14 ENTER
                                                                A.SELECT   COUNTER     RESET

                                              A.SELECT 28                                                             22 COUNT RESET                                                                                                  RF OUT (TO TV) terminal
                                               CANCEL 27
                                      REMAIN/COUNTER 22

                                                                                                                                                               LINE IN 1 AUDIO (Rear), 2 (Front) jacks
                                                                                                                                                               If the connected equipment is monaural (has one audio output jack), connect the L (MONO) side, the same
                                                                                                                     * These buttons are used to control the   sound is recorded on both L and R on the Hi-Fi track.
                                                                                                                       cursor on the screen.
          8                                                                                                                                                                                                                                                                         9


                   How to Use the Remote Control                                                                                   Connections
                                                                                                                                    Before you use this VCR, it is necessary to connect it to your TV. Several ways of connecting are
                    This section explains how to get ready for remote control operation.
                                                                                                                                                                                                                                                                                                                                                Reference Information

                                                                                                                                    available depending on your use of TV or cable box. Select one which is applicable to your equipment.

                                                                                                                                Antenna/VCR/TV Connection

                                                                                                                               1   Disconnect the antenna cable from your TV and connect it to the RF IN terminal on the
                Setting up the Remote Control                                                                                      VCR.
               1   Open the battery compartment lid on the                                                                     2   Connect the RF OUT terminal to the TV.
                   rear panel.                                                                                                                                                                VHF/UHF                                                                       VHF antenna
                                                                                                                                                                                                                                                                                                  UHF antenna
                                                                                                                                                                                              combination antenna                                                           only

                                                                                                                                                                                                                  LINE   LINE                  IN         (FROM ANT.)
                                                                                                                                                                                                                  OUT    IN 1               (FROM ANT.)
                                                                                                                                                                                                                                              OUT RF
                                                                                                                                                                                                                            VIDEO            (TO TV)

                                                                                                                                                                                                                                    3   4

                   Install 2 batteries ("AAA" size) following                                                                                                                                                                                               OUT RF                                              VHF/UHF
               2                                                                                                                                                                                                                                           (TO TV)
                   the polarity diagrams.                                                                                                                                                                                                                               2
                                                                                                            +      +
                                                                                                                                                                                                                                                                                                                VHF UHF
                                                                                                                               Setting the VCR Output Channel                                                                                                                                Antenna splitter
                                                                                                                               When the VCR is connected in this way, the VCR sends the output                                                                                               (not supplied)
                                                                                                                               signals to channel 3 or 4 on your TV. Set the output channel
                                                                                                                               selector (CH selector) of the VCR to "3" or "4", whichever is vacant
                                                                                                                               in your area.

               3   Close the battery compartment lid.                                                                           AUDIO/VIDEO Connections
                                                                                                                               The AUDIO/VIDEO jacks are also available to connect your TV.
                                                                                                                                                                             When connected your TV using the
                                                                                                                                     LINE   LINE                  IN
                                                                                                                                     OUT    IN 1               (FROM ANT.)
                                                                                                                                                                             AUDIO/VIDEO OUT jacks
                                                                                                                                                                 OUT RF                                                                                                      To watch video pictures, set the video input mode
                                                                                                                                               VIDEO            (TO TV)

                                                                                                                                                       3   4
                                                                                                                                                                                                                                                                             on your TV. For the video input mode, refer to the
                                                                                                                                                                                                                                                                             manual of your TV.
                                                                                                                                      LINE OUT VIDEO                                                       VIDEO IN

               4   Point the remote control at the VCR and press the buttons within the operating range.
                   Distance: within about 7 m from the front of the remote sensor                                                    LINE OUT AUDIO                                                        AUDIO IN
                   Angles: within about 30

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