Sony srs d 211 service manual
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2 SRS-D211 TABLE OF CONTENTS Specifications ............................................................................ 1 1.GENERAL ................................................................... 3 2. DIAGRAMS 2-1. Schematic Diagram – Amp Section– ............................... 4 2-2. Printed Wiring Boards– Amp Section – .......................... 5 2-3. Schematic Diagram – Control Section– .......................... 6 2-4. Printed Wiring Boards – Control Section– ...................... 7 3. EXPLODED VIEWS 3-1. Subwoofer Section .......................................................... 8 3-2. Control Box, Satellite Speaker Section ........................... 9 4. ELECTRICAL PARTS LIST .................................. 10 SAFETY CHECK-OUT After correcting the original service problem, perform the following safety checks before releasing the set to the customer: Check the antenna terminals, metal trim, metallized knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below. LEAKAGE The AC leakage from any exposed metal part to earth Ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microampers). Leakage current can be measured by any one of three methods. 1. A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manufacturers instructions to use these instruments. 2. A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job. 3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The limit indication is 0.75 V, so analog meters must have an accurate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2V AC range are suitable. (See Fig. A) SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. ATTENTION AU COMPOSANT AYANT RAPPORT À LA SÉCURITÉ!! LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY. To Exposed Metal Parts on Set 0.15 µF 1.5 kΩAC Voltmeter (0.75 V) Earth Ground Fig. A. Using an AC voltmeter to check AC leakage.
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SRS-D211 3 3 SRS-D211 SECTION 1 GENERAL This section is extracted from instruction manual. LOCATING THE CONTROLS SECTION 2 DIAGRAMS For schematic diagrams. Note: - 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 Ω and 1/4 W or less unless otherwise specified. - C : panel designation. - A : B+ Line. - B : B– Line. -V oltages are dc with respect to ground under no-signal conditions. - no mark : Power on -V oltages are taken with a VOM (Input impedance 10 M Ω). V oltage variations may be noted due to normal production toler- ances. - Signal path. F : AUDIO - Abbreviation CND : Canadian model KR : Korean model THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this necessary note is printed in each block.) Note: The components identi- fied by mark 0 or dotted line with mark 0 are criti- cal for safety. Replace only with part number specified. Note: Les composants identifiés par une marque 0 sont critiques pour la sécurité. Ne les remplacer que par une piéce portant le numéro spécifié. For printed wiring boards. Note: - X : parts extracted from the component side. - : Pattern from the side which enables seeing. - Abbreviation CND : Canadian model KR : Korean model POWER ON OFF V OLUME BASS MIN MAX MIN MAX PHONES POWER VOLUME PHONES Controller VOLUME: \b \f \f \f BASS: \b \f \f \f PHONES: \f \f \f\b\f \f\b \f