SONY AC-SD1 VER. 1.1
Service Manual

AC-SD1 SECTION 1 GENERAL
This section is extracted from instruction manual.

SECTION 2 DIAGRAMS
� Note for Printed Wiring Boards and Schematic Diagrams

Ver. 1.1

AC adaptor
Note on Printed Wiring Boards: � X : parts extracted from the component side. � Y : parts extracted from the conductor side. � : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.) Caution: Pattern face side: (Side B) Parts face side: (Side A) Note on Schematic Diagrams: � All capacitors are in µF unless otherwise noted. (p: pF) 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. � C : panel designation. Note: Note: The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Les composants identifiés par une marque 0 sont critiques pour la sécurité. Ne les remplacer que par une piéce por tant le numéro spécifié.

Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.

� Indication of transistor.

C

A Speaker system cord (9) B POWER indicator (21)

C POWER (ON/OFF) (21) D AC power cord (19)

Q BE

These are omitted.

� A : B+ Line. � Voltages are dc with respect to ground under no-signal (detuned) conditions. � Voltages are taken with a VOM (Input impedance 10 M�). Voltage variations may be noted due to normal production tolerances. � Abbreviation CND : Canadian model E32 : 110 � 240 V AC area in E model MX : Mexican model TW : Taiwan model

� IC Block Diagram � DIAT POWER Board � IC901 STR-W6735N (CND, MX, TW) STR-W6765N (EXCEPT CND, MX, TW)

DRIVE REGULATOR PROTECTION LATCH D1 DELAY R Q S BURST CONTROL REGULATOR & ICONST + � START/STOP BURST

NC 2 S/GND 3 VCC 4 OVP

OLP/SS 5 SOFT START

+ �

OLP

FB 6 + � � + FB

OCP S Q R BSD OSC

Q R S

� + BD

BOTTOM SELECTOR

+ �

COUNTER

OCP/BD 7

AC-SD1

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