Sony sava 7 service manual
This is the 18 pages manual for sony sava 7 service manual.
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Extracted text from sony sava 7 service manual (Ocr-read)
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Ñ 2 Ñ TABLE OF CONTENTS SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! 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 Ë LA SƒCURITƒ! LES COMPOSANTS IDENTIFƒS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHƒMATIQUES ET LA LISTE DES PIéCES SONT CRITIQUES POUR LA SƒCURITƒ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIéSES SONY DONT LES NUMƒROS SONT DONNƒS DANS CE MANUEL OU DANS LES SUPPƒMENTS PUBLIƒS PAR SONY. After correcting the original service problem, perform the following safety checks before releasing the set to the customer: Check the antenna terminals, metal trim, ÒmetallizedÓ 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 manufacturersÕ 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 ÒlimitÓ 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 CHECK-OUT To Exposed Metal Parts on Set 0.15 µF 1.5k ½ AC voltmeter (0.75V) Earth Ground Fig. A. Using an AC voltmeter to check AC leakage. 1. GENERALááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááááááááááááááá 3 2. DISASSEMBLY 2-1. GRILLE FRAME ASSY, FRONT PANEL ASSY, FRONT SPEAKER ááááááááááááááááááááá 4 2-2. TOP GRILLE ASSY, TOP SPEAKER ááááááááááááááááááááááááááááááá 4 2-3. STAND ASSY, BOTTOM GRILLE, BOTTOM SPEAKER ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááá 5 3. DIAGRAMS 3-1. CIRCUIT BOARDS LOCATION áááááááááááááááááááááááááááááááááááááá 6 3-2. SCHEMATIC DIAGRAM Ð MAIN SECTION Ð áááááááááááááá 7 3-3. PRINTED WIRING BOARD Ð MAIN SECTION Ð ááááááá 11 3-4. SCHEMATIC DIAGRAM Ð DISPLAY SECTION Ð áááááááá 14 3-5. PRINTED WIRING BOARD Ð DISPLAY SECTION Ð ááá 16 3-6. IC PIN FUNCTIONS ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááá 17 3-7. IC BLOCK DIAGRAMS ááááááááááááááááááááááááááááááááááááááááááááááááá 18 4. EXPLODED VIEWS 4-1. SYSTEM (L) ASSY FRONT ááááááááááááááááááááááááááááááááááááááááááá 20 4-2. SYSTEM (L) ASSY BACK ááááááááááááááááááááááááááááááááááááááááááááá 21 4-3. SYSTEM (R) ASSY FRONT ááááááááááááááááááááááááááááááááááááááááááá 22 4-4. SYSTEM (R) ASSY BACK ááááááááááááááááááááááááááááááááááááááááááááá 23 5. ELECTRICAL PARTS LISTááááááááááááááááááááááááááááááááááááááááá 24
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SAVA-7 Ñ 3 ÑÑ 4 ÑÑ 5 ÑÑ 6 Ñ SECTION 1 GENERALSECTION 2 DISASSEMBLYSECTION 3 DIAGRAMS 1. GRILLE FRAME ASSY, FRONT PANEL ASSY, FRONT SPEAKER 2. TOP GRILLE ASSY, TOP SPEAKER3. STAND ASSY, BOTTOM GRILLE, BOTTOM SPEAKER 3-1. CIRCUIT BOARDS LOCATIONRemove the cacher by prying it up using Ô No.0 head screw driver tip. 9 Speaker (7 cm) 8 Tapping 3.5 ´ 12 4 Tapping 3.5 ´ 12 0 Tapping 3.5 ´ 12!Á Speaker (8 cm) 7 Front panel assy 6 Tapping 3.5 ´ 12 5 Tapping 3.5 ´ 12 3 Cacher 2 Cacher 1 Grille frame assy 1 Top grille 2 Tapping 3.5 ´12 3 Speaker (7 cm)Remove the top grille by lifting it up with the inserted flat head Õ screwdriver tip. A 4 Tapping 3.5 ´ 123 Bottom grille 2 Tapping 3.5 ´ 12 1 Stand assy (Open in the direction of the arrow.) 5 Tapping 3.5 ´ 12 6 Speaker (10 cm) DOLBY board VOLUME board POWER board DISPLAY board SWITCH board PS board T1 board T2 board CONNECTOR board Note : Follow the disassembly procedure in the numerical order given. This section is extracted from instruction manual.