JVC-RVB550-cs-sup维修电路原理图.pdf
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1、SERVICE MANUAL CD PORTABLE SYSTEM No.20826C Jan. 2001 COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD. RV-B550BU RV-B550BU Area Suffix Contents Safety precautions .1-2 Importance administering point on the safety .1-3 Important for laser products . 1-4 Preventing static electricity . 1-5 Disassembly met
2、hod . 1-6 Adjustment method . 1-15 Flow of functional operation until TOC read . 1-19 Maintenance of laser pickup .1-20 Replacement of laser pickup .1-20 Description of major ICs . 1-2129 UY . Argentina This service manual adds UY version to the service manual (RV-B550BU No.20826) previously issued.
3、 This service manual is made from 100% recycled paper. SLEEP CLOCKTIMER TIMER ON/OFF PROGRAM RANDOM REPEAT AUTO PRESET DISPLAY REVERSE MODEMULTI CONTROLREWFF RM-RXVB55 REMOTE CONTROL TAPE TUNER BAND FM MODE C D DOWNUPSET AUX VOLUME AHB PRO SOUNDACS Supplement RadioFans.CN 收音机爱 好者资料库 RV-B550BU 1-2 Sa
4、fety precautions 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 t
5、o 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 manufacturers warr
6、anty 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
7、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 identif
8、ied 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
9、 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
10、 should be observed, and it should be confirmed that they have been returned to normal, after re-assembling. 5. Leakage current 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, kno
11、bs, 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 th
12、e 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
13、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 resist
14、or connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure 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 corresp
15、onds to 0.5 mA AC (r.m.s.). Warning 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 stan
16、dards. 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 ground Place this probe on each exposed metal part. AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity) 1500 10W 0.15
17、 F AC TYPE !CAUTION 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. RadioFans.CN 收音机爱 好者资料库 RV-B550BU 1-3 Importance administering point on the safety RV-B550J ONLY Full Fuse Replacemen
18、t Marking Graphic symbol mark (This symbol means fast blow type fuse.) should be read as follows ; FUSE CAUTION FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE AND RATING OF FUSES ; F1901 : 1.0-A, 250-V F1902 : 6.3-A, 125-V F1903 : 6.3-A, 125-V F1904 : 6.3-A, 125-V F1901 :
19、 1.0-A, 250-V F1902 : 6.3-A, 125-V F1903 : 6.3-A, 125-V F1904 : 6.3-A, 125-V RV-B550J SEULEMENT Marquage Pour Le Remplacement Complet De Fusible PRECAUTIONS SUR LES FUSIBLES POUR UNE PROTECTION CONTINUE CONTRE DES RISQUES DINCENDIE, REMPLACER SEULEMENT PAR UN FUSIBLE DU MEME TYPE ; Le symbole graphi
20、que (Ce symbole signifie fusible de type a fusion rapide.) doit etre interprete comme suit ; Note : Its means J for U.S.A. and Canada market model. RV-B550BU 1-4 Important for laser products 1.CLASS 1 LASER PRODUCT 2.DANGER : Invisible laser radiation when open and inter lock failed or defeated. Avo
21、id direct exposure to beam. 3.CAUTION : There are no serviceable parts inside the Laser Unit. Do not disassemble the Laser Unit. Replace the complete Laser Unit if it malfunctions. 4.CAUTION : The compact disc player uses invisible laserradiation and is equipped with safety switches whichprevent emi
22、ssion of radiation when the drawer is open and the safety interlocks have failed or are de feated. It is dangerous to defeat the safety switches. 5.CAUTION : If safety switches malfunction, the laser is able to function. 6.CAUTION : Use of controls, adjustments or performance of procedures other tha
23、n those specified herein may result in hazardous radiation exposure. VARNING : Osynlig laserstrlning r denna del r ppnad och sprren r urkopplad. Betrakta ej strlen. VARO : Avattaessa ja suojalukitus ohitettaessa olet alttiina nkymttmlle lasersteilylle.l katso steeseen. ADVARSEL : Usynlig laserstrlin
24、g ved bning , nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for strling. ADVARSEL : Usynlig laserstrling ved pning,nr sikkerhetsbryteren er avslott. unng utsettelse for strling. REPRODUCTION AND POSITION OF LABELS WARNING LABELDANGER : Invisibie laser radiation when open and interlock or
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