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SONY KV21FT1U
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of SONY KV21FT1U Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Table of Contents
    • Specifications
    • Connectors
    • Self Diagnostic Software
    1. GENERAL
      • Switching On the TV and Automatically Tuning
      • Introducing the Menu System
      • Teletext
      • Connecting Optional Equipment
      • Using Optional Equipment
      • Troubleshooting
    1. DISASSEMBLY
      • KV - 21LT1
      1. Rear Cover Removal
      2. A Board PWB Removal 1
      3. A Board PWB Removal 2
      4. Service Position
      5. Wire Dressing
      6. Picture Tube Removal
      • KV - 21FT2
      1. Rear Cover Removal
      2. Chassis Removal
      3. Service Position
      4. Wire Dressing
      5. Picture Tube Removal
    1. SET - UP ADJUSTMENTS
      1. Beam Landing
      2. Convergence
      3. Focus Adjustment
      4. Screen (G2), White Balance
    2. CIRCUIT ADJUSTMENTS
      1. Electrical Adjustments
      2. Test Mode 2
    3. DIAGRAMS
      1. Circuit Board Location
      2. Block Diagrams
      3. Schematic Diagrams and Printed Wiring Boards
        • C Board
        • A Board
      1. Semiconductors
      2. IC Blocks
    1. EXPLODED VIEWS
        • Chassis (KV - 21LT1)
        • Chassis (KV - 21FT2)
        • Picture Tube (KV - 21LTl)
        • Picture Tube (KV - 21FT2)
    1. ELECTRICAL PARTS LIST
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Text excerpt from page 17 (click to view)
Layout of each control

3-4. Screen (G2), White Balance
[Adjustment in the service mode using the remote commander] G2 adjustment 1. 2. 3. Input a dot signal from the pattern generator. Set the Picture, Brightness and Colour to minimum. Apply 175V DC from an external power supply to the R, G and B cathodes of the CRT. Whilst watching the picture, adjust the G2 control [SCREEN] located on the Flyback Transformer to the point just before the flyback return lines disappear. White balance adjustment for TV mode 1. 2. Input an all-white signal from the pattern generator. Enter into the ‘Service Mode’ by pressing ‘TEST’, ‘TEST’ and ‘MENU’ on the Service Commander. 3. Select ‘Service’ from the on screen menu display and press the right arrow button on the remote commander. 4. The ‘Service’ menu will appear on the screen. [See Page 18] 5. Set the ‘Contrast’ to MAX. 6. Set the ‘R-Drive’ to 25. 7. Adjust the ‘G-Drive’ and the ‘B-Drive’ so that the white balance becomes optimum. 8. Press the ‘OK’ button to write the data for each item. 9. Set the ‘Contrast’ to MIN. 10. Adjust the ‘G-Cutoff’, and the ‘R-Cutoff’ with the left and right buttons on the remote commander so that the white balance becomes optimum. 11. Press the ‘OK’ button to write the data for each item.

V.STAT

Purity BMC (Hexapole)

4.

3-3. Focus Adjustment
1. 2. 3. Receive a television broadcast signal. Normalize the picture setting. Adjust the focus control located on the flyback transformer to obtain the best focus at the centre of the screen. Bring only the centre area of the screen into focus, the magenta-ring appears on the screen. In this case, adjust the focus to optimize the screen uniformly.

Focus

Screen

17

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