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DAEWOO CN-200A CHASSIS
Manual de Servicio


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

Descripción del DAEWOO CN-200A CHASSIS 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
GENERAL ADJUSTMENTS
1. GENERAL
In the majority of cases, all color televisions will need only slight touch-up adjustment upon installation. Check the basic characteristics such as height, focus and sub- basic characteristics such as height, focus and sub- bright. Observe the picture for good black and white details without objectionable color shading. clockwise.) 4) Rotate the RED, GREEN and BLUE BIAS controls (R917, R918, R919) counterclock wise from the maximum, set them to the position where notches in the knobs become parallel to the surface of P.C. Board. 5) Set the GREEN and BLUE DRIVE controls (R920, R921) to the mid position. 6) Turn the service switch SW901 (Service Position) on the CRT board. 7) Rotate the SCREEN control (on T402) gradually clockwise until the second horizontl line following the first line appears slightly on the screen. Then turn fully counterclockwise the two BIAS controls corresponding to the colors of the first and the second horizontal lines to eliminated the lines. 8) Set the SCREEN control to the position where the third horizontal line lights slightly on the screen. 9) Adjust the two BIAS control set to the minimum in item 7) above to obtain the slightly lighted horizontal line in the same levels of three (red, green, blue) colors. (The line should be white if the BIAS controls are adjusted properly.) 10) Turn the service switch SW901 again (Normal position on the CRT board.) 11) Press PICTURE-SEL, P-UP and set the brightness and contrast controls to the maximum. 12) Adjust the BLUE and GREEN DRIVE control to obtain proper white-blanced picture in high light areas. 13) Using P-SEL, P-DN key, set the brightness and contrast controls to obtain dark gray raster. Then check the white balance in low brightness. Of the white balance is not proper, retouch the BIAS controls and DRIVE controls to obtain a good white balance in both low and high light areas.

2. VERTICAL HEIGHT ADJUSTMENT
1) Tune in an active channel. 2) Adjust brightness and contrast controls for a good picture. 3) Adjust vertical height control (R305) for approximately one half inch over scan at top and bottom of picture screen. 4) Vertical centering adjustment R310 Horizontal centering adjustment R516.

3. FOCUS ADJUSTMENT
1) Tune in an active channel. 2) Adjust brightness, sharpness and contrast controls for a good picture. 3) Adjust focus control (part of T402) for sharp scanning lines and/or sharp picture.

4. RF AGC ADJUSTMENT
1) Tune in an active channel. 2) Using the attenuator, apply the signal of 60dBm to the antenna input terminal. 3) Turn RF AGC control (R113) full clockwise until snow or/and noise appears in the picture, then slowly turn control counter clockwise until snow or/and noise disappears.

5. HIGH VOLTAGE CHECK
High voltage is not adjustable but must be checked to verify that the receiver is operating within safe and efficient design limitations as specified: 1) Operate Receiver for at least 15 minutes at 120V AC line. 2) Set brightness sharpness, contrast and color control to minumum position (Zero beam). 3) Connect accurate high voltage meter to CRT anode. The reading should be 26kv~28kv If a correct reading cannot be obtained, check circuity for malfunctioning components.

8. MAIN B+(103V) ADJUSTMENT
1) Tune in an active channel 2) Check TP10 (DC 103V Line) using D.V.M 3) Adjust voltage control (R809) for main B+(DC 103V)

9. SUB-BRIGHTNESS ADJUSTMENT
1) Tune in a color program. 2) Set the CONTRAST control to maximum and the BRIGHTNESS control to maximum and the SHARPNESS control to the center position. 3) Set the COLOR and TINT controls to center. 4) Set the SUB-BRIGHT control R522 to center and leave the receiver on five minutes in this state. 5) Watching the picture carefully, adjust the SUBBRIGHT control in the position where the picture does not show evidence of blooming in high brightness area and not appear too dark in low bright area. 6) Check for BRIGHTNESS controls at both extremes. 7) If the picture does not appear dark with the CONTRAST and BRIGHTNESS control turned to minimum, or not appear bright with the controls turned to maximum, adjust the SUB-BRIGHT control again for an acceptable picture.

6. X-RADIATION PROTECTION CIRCUIT TEST
When service has been performed on the horizontal deflection system, high voltage system or B+system, the XRADIATION protection circuit must be tested for proper operation as follows: 1) Operate receiver for at least 15 minutes at 120V AC line. 2) Adjust all customer controls for normal picture and sound. 3) Short R414(X-RAY Short test), and remove short clip. 4) If the operation of horizontal osc. does not stop in step The circuit must be repaired, before the set is returned to the customer.

7. CRT GRAY SCALE ADJUSTMENT
1) Tune in an active channel. 2) Set the COLOR control to minimum. 3) Turn the SCREEN control (on T402 fully counter-

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