Sony srs dz 10 service manual
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2 SRS-DZ10 TABLE OF CONTENTS Specifications ............................................................................ 1 1.GENERAL ................................................................... 3 2. DIAGRAMS 2-1. Printed Wiring Boards – Control Section– ...................... 4 2-2. Schematic Diagram – Control Section– .......................... 5 2-3. Printed Wiring Boards– Amplifier Section (Side A) – .... 6 2-4. Printed Wiring Boards– Amplifier Section (Side B) – .... 7 2-5. Schematic Diagram – Amplifier Section– ....................... 8 2-6. Schematic Diagram – Satellite Section– ......................... 9 2-7. Printed Wiring Boards – Satellite Section– ..................... 10 3. EXPLODED VIEWS 3-1. Amplifier Section ............................................................ 10 3-2. Woofer Section ................................................................ 11 3-3. Control Box Section ........................................................ 12 3-4. Satellite Section ............................................................... 13 4. ELECTRICAL PARTS LIST .................................. 14 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. Unleaded solder Boards requiring use of unleaded solder are printed with the lead free mark (LF) indicating the solder contains no lead. (Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size.) : LEAD FREE MARK Unleaded solder has the following characteristics. -Unleaded solder melts at a temperature about 40°C higher than ordinary solder. Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time. Soldering irons using a temperature regulator should be set to about 350°C. Caution: The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful! -Strong viscosity Unleaded solder is more viscous (sticky, less prone to flow) than ordinary solder so use caution not to let solder bridges occur such as on IC pins, etc. -Usable with ordinary solder It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder.
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SRS-DZ10 3 3 SRS-DZ10 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 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. POWER V OLUME BASS PHONES MAX MIN MAX MIN POWER VOLUME PHONES Control Box VOLUME: Controls total volume level. BASS: Adjusts bass level (Subwoofer). PHONES: Connect to headphones for personal listening. BASS For printed wiring boards. Note: -X : parts extracted from the component side. - : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.) IC301 TDA7297 - IC Block Diagram 1 4 2 3 56 – + – + 7 8910 11 15 12 14 13 – + – + OUT1+ OUT2+ OUT1- OUT2- VCC VCC IN1 IN2 OUTPUT 2 S-GND PW-GND ST-BY MUTE N.C. N.C.N.C. V ref IC302 TDA7482 1 4 2 3 5 6 – + – + 7 8 9 10 11 15 12 14 13 OUT BOOTDIODE BOOT VREG FEEDCAP IN -VCC SIGN +VCC SIGN +VCC POW -VCC POW-VCC POW SGN-GND ST-BY/MUTE FREQ N.C. Caution: Parts face side: Parts on the parts face side seen from (Side A) the parts face are indicated. Pattern face side: Parts on the pattern face side seen from (Side B) the pattern face are indicated.