Sony TC-WR720A Service Manual - Page 1

SERVICE MANUAL 0> • US Model Canadian Model E Model TC-WR720A AEP Model TC-WR720 This photo is TC-WR720. SPECIFICATIONS Recording system 4-track 2-channel stereo Fast winding time Approx. 90 sec. (with HF-60 cassette) Bias AC bias Signal-to-noise ratio (NAB, at peak level) Cassette Dolby NR switch OFF B-TYPE C-TYPE ON ON Type IV (Sony METAL-ES) 58dB 66dB 73dB Type II (Sony UX-S) 57dB 65dB 72dB Type I (Sony HF-S) 55dB (WR720) 54dB (WR720A) 63dB 70dB Total harmonic distortion 1.0% (with Sony METAL-ES cassettes) Frequency response (DOLBY NR OFF) Type IV cassette 30-18,000Hz (±3dB) (WR720) (Sony METAL-ES) 30-15,000Hz (±3dB) (WR720A) 30-14,000Hz (OVU recording) (WR720) 30-13,000Hz (OVU recording) (WR720A) Type II cassette 30-17,000Hz (±3dB) (WR720) (Sony UX-S) 20-15,000Hz (±3dB) (WR720A) Type I cassette 30-15,000Hz (±3dB) (WR720) (Sony HF-S) 30-14,000Hz (±3dB) (WR720A) Wow and flutter Inputs Line inputs (phono jacks) 0.07% WRMS (NAB) Sensitivity Input impedance 77.5mV (-20dB) 50kohms El. trM;),T. Refe: f0 nearidopa!c,D;.unler,ts Model Name Using Similar Mechanism TC-WR620 Tape Transport Mechanism Type TCM-19ORBld Output Line outputs (phono jacks) Rated output level Headphones (stereo phono jack) Load impedance Output level 0.44V (-5dB) at a load impedance of 47kohms Over 10kohms 0.3mW at a load impedance of 32 ohms General Power requirements 120V AC, 60Hz (US, Canadian model) 220V AC, 50/60Hz (AEP model) 120, 220, 240, 50/60Hz (E model) Power consumption 33 watts Dimensions Approx. 430 X135 X 285mm (w/h/d) (17 X53/8 X111/4 inches) including projecting parts and controls Weight Approx. 5kg (11 lbs 1 oz) (WR720) Approx. 4.6kg (10 lbs 3 oz) (WR720A) Supplied accessories Audio connecting cord (2) Remote commander (RM-900W) (E model only) Conversion adaptor (E model only) Design and specifications subject to change without notice. STEREO CASSETTE DECK SONY