Jvc RCST 3 SL Service Manual
This is the 12 pages manual for Jvc RCST 3 SL Service Manual.
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Extracted text from Jvc RCST 3 SL Service Manual (Ocr-read)
Page 1
1-2 Compact disc player Signal detection system Non-contact optical pickup (semiconductor laser) Number of channels 2 channels (stereo) Frequency response 20 Hz - 20 000 Hz Signal-to-noise ratio 90 dB Wow and flutter Less than measurable level Tuner FM frequency range 87.50 MHz - 108.00 MHz AM frequency range 522 kHz - 1 629 kHz Antennas Telescopic antenna for FM Ferrite core antenna for AM Cassette deck Track system 4-track 2-channel stereo Motor Electronic governor DC motor for capstan Heads Hard Permalloy head for recording/playback Magnetic head for erasure Frequency response 80 Hz - 12 500 Hz Wow and flutter 0.15% (WRMS) Fast-winding time Approx. 120 sec. (C-60 cassette) General Speakers 10 cm × 2 Power output 2 W per channel, min. RMS, driven into 8 &! at 1 kHz, with no more than 10% total harmonic distortion (IEC 268-3) Output terminal PHONES × 1, output level 0 mW - 20 mW /32 ohm, matching impedance: 16ohm 32 ohm Power supply AC 230 V , 50 Hz DC 12 V (batteries R20P (SUM-1)/D (13F) × 8) Power consumption 19 W (operation mode) 3.2 W (standby mode) Dimensions 440 mm (W) × 168 mm (H) × 241 mm (D) Mass Approx. 3.1 kg (without batteries) Specification
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1-3 1. This design of this product contains special hardware and many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be performed by qualified personnel only. 2. Alterations of the design or circuitry of the product should not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturer`s warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom. 3. Many electrical and mechanical parts in the products have special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or other hazards. 4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after re-assembling. 5. Leakage currnet check (Electrical shock hazard testing) After re-assembling the product, always perform an isolation check on the exposed metal parts of the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock. Do not use a line isolation transformer during this check. Plug the AC line cord directly into the AC outlet. Using a "Leakage Current Tester", measure the leakage current from each exposed metal parts of the cabinet, particularly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.). Alternate check method Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15 F AC-type capacitor between an exposed metal part and a known good earth ground. Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and meausre the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Voltage measured any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). 1. This equipment has been designed and manufactured to meet international safety standards. 2. It is the legal responsibility of the repairer to ensure that these safety standards are maintained. 3. Repairs must be made in accordance with the relevant safety standards. 4. It is essential that safety critical components are replaced by approved parts. 5. If mains voltage selector is provided, check setting for local voltage. Good earth groundPlace this probe on each exposed metal part. AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity) 1500 10W 0.15 F AC TYPE ! Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system. In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the " " mark nearby are critical for safety. (This regulation does not correspond to J and C version.)