Sony TA-F3A free download

File name TA-F3A.PDF

SPECIFICATIONS GENERAL Power Requirements: 120V ac, 60 Hz (US, Canadian Model) 220 V ac, 50160 Hz (AEP Model) 240 V ac, 50/60 Hz (UK Model) 120 or 220V ac adjustable. 50/60 Hz (E Model) 85 W (US Model) AMPLIFIER SECTION 140W [Canadian Model) 210W (AEP, E Model) Continuous RMS 240W (UK Model) Power output: Approx. 435 (w) x 145 (h) x 370 (d) mm (Less than 0.5% THD) 17 1/8(w) x 53/4(h) x 14%ldl inches (US, Canadian Model) Approx. 410 (w) x 145 (h) x 370 (d) mm 161/4(w) x 5%(h) x 141/,ldl inches (AEP, UK, E Model) Including projecting parts and controls Power Bandwidth (IHF): Damping Factor: Harmonic Distortion: IM Distortion: (60 Hz: 7 kHz = 4:1) Weight: Approx. Approx. Approx. 10.5 kg (23 lb 2oz). net 12.5 kg (27 lb 9 oz), in shipping carton (US, Canadian Model) 9.5 kg (21 lb), net 11.5 kg (25Ib 6oz), in shipping carton (AEP, UK, E Model) Power Consumption: Dimensions: Both channels driven simultaneously At 1 kHz 5OW+5OW (8nl At 20 Hz-20 kHz 5OW+5OW(SI~l According to DIN 45500 (AEP, UK, E Model) 52W+52W 03.Q) 10 Hz-25 kHz 30 Less than 0.5% at rated output Less than 0.1 % at 1 W output Less than 0.5 % at rated output Less than 0.1% at 1W output SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY SHADING AND A MARK ON THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR A8 SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. ATTENTION AU COMPOSANT AVANT RAPPORT 1-2. CIRCUIT DESCRIPTION PROTECTION CIRCUIT 3. Muting Circuit (See Fig. 1-3 and Fig. 1-4) This muting circuit prevents the loud "pop" (due to initial current flow) or click noises produced just after turning the POWER switch to on or off. These transients might damage a delicate highfidelity speaker system. . When POWER Switch turned on: C308 commerces to charge through R309. At the same time, the base voltage of Q306 gradually rises in accordance with charging voltage of C308. It takes about 3 seconds until Q306 is turned on. Accordingly, the speaker output terminal is cut off by the relay RY301 for about 3 seconds after the POWER switch is turned on. This protects the speaker from the destruction caused by the "pop" noises. Two kinds of protection circuit are employed in this power amplifier. One is a power-transistor protection circuit and the other is a speaker protection circuit. 1. Power-transistor Protection Circuit To protect overloaded power transistors from destruction, a protection circuit is employed. The fusible resistors are inserted in each of Q704, 4705 (L-CH) and 4754, 4755 (R-CH) collector and emitter circuits. When the excessive current flows into the power transistors, these fusible resistors break faster than the transistors and thus protects the transistors from destruction. Speaker Protection Circuit (See Fig. l-l and Fig. 1-2) When the excessive current flows into the power transistors, B+ voltage decreases. Therefore, 4301 turns on, biasing