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SONY DE805
Manual de Servicio


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  • Contiene diagramas del circuito
  • Descargable
  • Formato PDF
  • Manual completo
  • Idiomas: English
Precio: $4.99

Descripción del SONY DE805 Manual de Servicio

Manual de servicio completo en formato digital (archivo PDF). Los manuales de servicio por lo general contienen diagramas de circuitos, tarjetas de circuitos impresos, consejos para reparación, diagramas de cableado, diagramas de bloque y lista de refacciones. El Manual de Servicio (a veces llamado Manual de Reparación) es usado principalmente por los técnicos.

Si tan solo quiere saber cómo utilizar su televisión, reproductor de vídeo, reproductor de mp3, etc. Quizá lo que necesita es el Manual del Propietario. Después de colocar la orden le enviaremos las instrucciones de descarga a su dirección de e-mail.

The manual is available in languages: English

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Tabla de contenido
    1. GENERAL
    2. SERVICE NOTE
    3. DISASSEMBLY
    4. SERVICE MODE
    5. ELECTRICAL ADJUSTMENTS
    6. DIAGRAMS
      1. Block Diagram
      2. Printed Wiring Boards
      3. Schematic Diagram
      4. IC Pin Function Description
    7. EXPLODED VIEWS
    8. ELECTRICAL PARTS LIST
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TEXT_PDF_SNIPPET
SECTION 5 ELECTRICAL ADJUSTMENTS
Precautions for Adjustment 1. Before beginning adjustment, set the equipment to service mode. After the completion of adjustment, be sure to reset the service mode. For more information, see âService Mode (service program) â on page 8. 2. Perform adjustments in the order given. 3. Use YEDS-18 disc (Part No.: 3-702-101-01) unless otherwise indicated. 4. Power supply voltage requirement: DC2.5 V in battery terminal VOLUME knob : Minimum RESUME switch : OFF ESP switch : OFF AVLS switch : NORMAL HOLD switch : OFF Before Beginning Adjustment Set the equipment to service mode (See page 8) and check the following. If there is an error, repair the equipment. ⢠Checking of the sled motor 1. Open the upper panel. 2. Press the + and = keys and check that the optical pickup can move smoothly without sluggishness or abnormal noise in innermost periphery n outermost periphery n innermost periphery + :The optical pick-up moves outwardly. = :The optical pick-up moves inwardly. ⢠Checking of focus searching 1. Open the upper panel. 2. Press the ^ key. (Focus searching operation is activated continuously.) 3. Check the object lens of the optical pick-up for smooth up/ down motion without sluggishness or abnormal noise. 4. Press the p key. Check that focus searching operation is deactivated. If not, again press the p key slightly longer. VCC Adjustment Adjustment Procedure:
digital voltmeter (DC range) MAIN board TP401 (VCC) (See page 11) + â

Focus bias Check Condition: ⢠Hold the set in horizontal state. Check Procedure:
oscilloscope (AC range) MAIN board TP522 (RFO) TP520 (VC) (See page 11) 2kâ¦
+ â

1. Set the equipment to service mode stop state. (See page 8.) 2. Connect the oscilloscope to the test point TP522 (RFO) of the MAIN board. 3. Move the optical pick-up to the center by pressing the + and = keys. 4. Put the disc (YEDS-18). 5. Press the ^ key. From focus searching, focus is turned ON while entering CLV drawing-in mode. Tracking and sled are turned OFF. 6. Press the PLAY MODE key. (Both tracking and sled are turned ON.) 7. Check the oscilloscope waveform is as shown below. A good eye pattern means that the diamond shape (â) in the center of the waveform can be clearly distinguished. RF SIGNAL REFERENCE WAVEFORM (EYE PATTERN)
VOLT/DIV : 200 mV (With the 10:1 probe in use) TIME/DIV : 500 ns

RF level 1.0 ± 0.2V

To watch the eye pattern, set the oscilloscope to AC range and increase the vertical sensitivity of the oscilloscope for easy watching.

8. Stop revolving of the disc motor by pressing the p key. 9. After the completion of adjustment, reset service mode. (See page 8.) Check Location: MAIN Board (See page 11.)

1. Set the equipment to service mode stop state. (See page 8.) 2. Connect the digital voltmeter to TP401 (VCC) of the MAIN board. 3. Adjust RV401 on the MAIN board so that the reading on digital voltmeter goes 2.75± 0.05 V. 4. After the completion of adjustment, reset service mode. (See page 8.) Adjustment Location: MAIN board (See page 11)

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