SONY STRDE225
Manual de Servicio

THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this necessary note is printed in each block.)
For schematic diagrams. Note:
� All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. � All resistors are in � and 1/4 W or less unless otherwise specified. � % : indicates tolerance. � ¢ : internal component. � 2 : nonflammable resistor. � 1 : fusible resistor. � C : panel designation.
Note: The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. Note: Les composants identifiés par une marque ! sont critiques pour la sécurité. Ne les remplacer que par une pièce portant le numéro spécifié.

For printed wiring boards. Note:
� X : parts extracted from the component side. � ® : Through hole. � ¢ : internal component. � b : Pattern from the side which enables seeing.

� Waveform

1 IC300

32PIN (OSC)

5.2Vp-p

� � � �

�

� � � �

U : B+ Line. V : B� Line. H : adjustment for repair. Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. No mark : FM Voltages are taken with a VOM (Input impedance 10 M�). Voltage variations may be noted due to normal production tolerances. Waveforms are taken with a oscilloscope. Circled numbers refer to waveforms. Signal path. F : FM Abbreviation CND : Canadian EE : East European AUS : Australian CH : Chinese G : German MY : Malaysia SP : Singapore EA : Saudi Arabia

8MHz

2 IC201

34PIN (X1)

4.19MHz

4.4Vp-p

�6�