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SONY ICFCD873
Manual de Servicio


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

Descripción del SONY ICFCD873 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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TEXT_PDF_SNIPPET
CD SECTION
Note: Tracking Balance Adjustment and Tracking Gain Adjustment are done automatically in this set.

Focus Bias Adjustment This adjustment is to be done when the optical block is replaced. Connection:
oscilloscope (AC range) MAIN board TP503 (RF) TP504 (VREF) + �

TEST MODE 1. Press the CD LID OPEN/CLOSE DET switch (S424) on the PUSH SWITCH board. 2. Under standby condition (when the clock appear in the display), short the BP (CD TEST AUTO).
Note: If the power is supplied to the microprocessor once, it is backed up for 3 minutes, therefore the TEST mode will not be activated within 3 minutes even if the power is turned on again. In this case, short instantaneously the BP (CD TEST MANUAL).

3. Press the ^ key, and the focus search is repeated. At this time, check that the optical pick-up objective lens moves smoothly without a sticking or noise. 4. Load the test disc (YEDS-18: Part No. 3-702-101-01), and perform automatic adjustment after the focus search succeded. 5. After automatic adjustment is finished, move the sled motor to the center. At this time, keep pressing the + and = keys to confirm that optical pick-up moves smoothly via most inside track � most outside track � most inside track without a sticking or noise. 6. Confirm the traverse waveform. 7. Press the [WAKE UP TRACK] key. 8. The tracking servo and the sled servo are turned on, the mute is cancelled. 9. Playback the 2nd track. 10. Adjust the RF and jitter waveforms. Connecting points: MAIN Board (See page 13)

Adjustment Procedure: 1. Connect the oscilloscope to TP504 (VREF) and TP503 (RF) on the MAIN board. 2. Insert the test disc (YEDS-18: Part No.3-702-101-01) and press ^ key to play. 3. Move the optical pick-up to the music area on the disc to enable easy visibility of the eye pattern by + or = key pressing. 4. Adjust RV501 so that the oscilloscope waveform is as shown in the figure below (eye pattern). A good eye pattern means that the diamond shape (�) in the center of the waveform can be clearly distinguished. � RF signal reference waveform (eye pattern)
VOLT/DIV: 0.2 V TIME/DIV: 500 ns 1.3 ± 0.5 Vp-p

When observing the eye pattern, set the oscilloscope for AC range and raise vertical sensitivity.

Adjustment Location: MAIN Board (See page 13)

� 10 �

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