sony ta-n1 free download

File name TA-N1.pdf

TA-N1 SERVICE MANUAL US Model Canadian Model AEP Model UK Model E Model Australian Model SPECIFICATIONS STEREO POWER AMPLIFIER MICROFILM 1 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) TABLE OF CONTENTS 1. SERVICE NOTE ... 3 2. GENERAL ... 5 3. ELECTRICAL ADJUSTMENT ... 7 4. DIAGRAMS 4-1. Circuit Boards Location ... 7 4-2. Schematic Diagram ­ Main L Section ­ ... 8 4-3. Printed Wiring Board ­ Main L Section ­ ... 9 4-4. Schematic Diagram ­ Main R Section ­ ... 10 4-5. Printed Wiring Board ­ Main R Section ­ ... 11 4-6. Schematic Diagram ­ Input Section ­ ... 12 4-7. Printed Wiring Board ­ Input Section ­ ... 13 4-8. Schematic Diagram ­ Power Section ­ ... 14 4-9. Printed Wiring Board ­ Power Section ­ ... 15 5. EXPLODED VIEWS 5-1. Top and Back Panel Section ... 16 5-2. Front Panel Section ... 16 5-3. Heat Sink Section ... 17 5-4. Bottom Plate and Frame Section ... 18 To Exposed Metal Parts on Set 6. ELECTRICAL PARTS LIST ... 19 0.15µF 1.5k AC voltmeter (0.75V) Earth Ground Fig. A. Using an AC voltmeter to check AC leakage. MODEL IDENTIFICATION -- BACK PANEL -- SAFETY-RELATED COMPONENT WARNING !! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAM