Sony cfs b 15 service manual
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Extracted text from sony cfs b 15 service manual (Ocr-read)
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- 2 - 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 À LA SÉCURITÉ! LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPÉMENTS PUBLIÉS PAR SONY. 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) Earth GroundAC voltmeter (0.75V) 1.5kΩ 0.15µF Fig. A. Using an AC voltmeter to check AC leakage. To Exposed Metal Parts on Set SAFETY CHECK-OUT ············································ 2 1. GENERAL ··································································· 3 2. DISASSEMBLY 2-1. REMOVAL OF FRONT CABINET ······························· 4 2-2. DIAL POINTER SETTING ············································ 4 3. MECHANICAL ADJUSTMENTS ························· 5 4. ELECTRICAL ADJUSTMENTS 4-1. TAPE RECODER SECTION ·········································· 5 4-2. RADIO SECTION ·························································· 6 5. DIAGRAMS 5-1. PRINTED WIRING BOARD –TUNER SECTION – ···· 8 5-2. SCHEMATIC DIAGRAM –TUNER SECTION – ········· 9 5-3. PRINTED WIRING BOARD –AUDIO SECTION – ···· 11 5-4. SCHEMATIC DIAGRAM –AUDIO SECTION – ········· 13 6. EXPRODED VIEWS 6-1. FRONT CABINET SECTION ········································ 15 6-2. MECHANISM DECK SECTION (1) ····························· 16 6-3. MECHANISM DECK SECTION (2) ····························· 17 7. ELECTRICAL PARTS LIST ·································· 18
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- 3 - SECTION 1 GENERAL FUNCTION NAME LOCATION OF CONTROL 123 45 6 7 8 9 !º !¡ 12 (phones) jack 2VOLUME knob 3OPR/BATT indicator lights. 4FUNCTION switch 5TUNING knob 6PAUSE button 7STOP/EJECT button 8FF button 9REW button !ºPLAY button !¡REC button