Sony MZ-R70 Service Manual - Page 1

SERVICE MANUAL Ver 1.3 2001. 01 With SUPPLEMENT-1 (9-927-631-81) MZ-R70 US Model Canadian Model AEP Model UK Model E Model Australian Model Chinese Model Tourist Model (Photo: Silver) US and foreign patents licensed from Dolby Laboratories Licensing Corporation. Model Name Using Similar Mechanism Mechanism Type Optical Pick-up Name MZ-R90/R91 MT-MZR70-165 LCX-2R System Audio playing system MiniDisc digital audio system Laser diode properties Material: GaAlAs Wavelength: λ = 790 nm Emission duration: continuous Laser output: less than 44.6 µW (This output is the value measured at a distance of 200 mm from the lens surface on the optical pick-up block with 7 mm aperture.) Recording and playback time Maximum 80 minutes (MDW-80, stereo recording) Maximum 160 minutes (MDW-80, monaural recording) Maximum 74 minutes (MDW-74, stereo recording) Maximum 148 minutes (MDW-74, monaural recording) Revolutions 400 rpm to 1,800 rpm (CLV) Error correction Advanced Cross Interleave Reed Solomon Code (ACIRC) Sampling frequency 44.1 kHz Sampling rate converter Input: 32 kHz/44.1 kHz/48 kHz Coding Adaptive TRansform Acoustic Coding (ATRAC) Modulation system EFM (Eight to Fourteen Modulation) Number of channels 2 stereo channels 1 monaural channel SPECIFICATIONS Frequency response 20 to 20,000 Hz ± 3 dB Wow and Flutter Below measurable limit Inputs Microphone: stereo mini-jack, 0.35-1.38 mV Line in: stereo mini-jack, 69-194 mV Optical (Digital) in: optical (digital) minijack Outputs i1: stereo mini-jack, maximum output level 5 mW + 5 mW, load impedance 16 ohm i2: stereo mini-jack, maximum output level 5 mW + 5 mW, load impedance 16 ohm General Power requirements Sony AC Power Adaptor (supplied) connected at the DC IN 3 V jack: 120 V AC, 60 Hz (US model) 230-240 V AC, 50/60 Hz (UK and Hong Kong model) 240 V AC, 50/60 Hz (Australia and New Zealand model) 220-230 V AC, 50/60 Hz (European model) 220 V AC, 50 Hz (China model) 220 V AC, 50 Hz (Argentina model) 100-240 V AC, 50/60 Hz (Other models) Nickel cadmium rechargeable battery NC-WMAA (supplied) LR6 (size AA) alkaline battery (not supplied) Battery operation time Battery life1) Batteries Recording2) Playback NC-WMAA Approx. Approx. nickel cadmium 3 hours 6.5 hours rechargeable battery LR6 (size AA) Approx. Approx. Sony alkaline 3 hours3) 17 hours dry battery 1) The battery life may be shorter due to operating conditions and the temperature of the location. 2) When you record, use a fully charged rechargeable battery. 3) Recording time may differ according to the alkaline batteries. - Continued on next page - PORTABLE MINIDISC RECORDER - 1 -