Sony MDS-JA333ES free download

File name MDS-JA333ES_sony_service_manual.pdf

MDS-JA333ES SERVICE MANUAL US Model Canadian Model AEP Model UK Model Photo : GOLD U.S. and foreign patents licensed from Dolby Laboratories Licensing Corporation. Model Name Using Similar Mechanism MD Mechanism Type Base Unit Type Optical Pick-up Type MDS-JA555ES MDM-6J MBU-5J KMS-260B/J1N SPECIFICATIONS System Disc Laser Laser output MiniDisc digital audio system MiniDisc Semiconductor laser ( = 780 nm) Emission duration: continuous MAX 44.6 µW1) 1) This output is the value measured at a distance of 200 mm from the objective lens surface on the Optical Pick-up Block with 7 mm aperture. Material: GaAlAs 400 rpm to 900 rpm ACIRC (Advanced Cross Interleave Reed Solomon Code) 44.1 kHz ATRAC (Adaptive TRansform Acoustic Coding)/ATRAC 3 EFM (Eight-to-Fourteen Modulation) 2 stereo channels 5 to 20,000 Hz ±0.3 dB Over 100 dB during play Below measurable limit Inputs ANALOG IN Jack type: phono Impedance: 47 k Rated input: 500 mVrms Minimum input: 125 mVrms Connector type: square optical Impedance: 660 nm (optical wave length) Connector type: square optical Impedance: 660 nm (optical wave length) Jack type: phono Impedance: 75 Rated input: 0.5 Vp-p, ±20 % DIGITAL IN OPT1 DIGITAL IN OPT2 Laser diode Revolutions (CLV) Error correction Sampling frequency Coding Modulation system Number of channels Frequency response Signal-to-noise ratio Wow and flutter DIGITAL IN COAXIAL Outputs PHONES Jack type: stereo phone Rated output: 28 mW Load impedance: 32 Jack type: phono Rated output: 2.5 Vrms (at 50 k ) Load impedance: over 10 k -- Continued on next page -- ANALOG OUT MINIDISC DECK SAFETY CHECK-OUT DIGITAL OUT OPTICAL Connector type: square optical Rated output: ­18 dBm Load impedance: 660 nm (optical wave length) DIGITAL OUT COAXIAL Jack type: phono Rated output: 0.5 Vp-p (at 75 ) Load impedance: 75 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 microamperes). 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. A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job. 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) To Exposed Meta