Jvc-RCST-1-BK-Service-Manual 电路图 维修手册.pdf

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1、SERVICE MANUAL CD PORTABLE SYSTEM No.MB062 2003/11COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD. RC-ST1SL RC-ST1RD RC-ST1BK Contents Area Suffix B - U.K. E -Contnental Europe EN - Northern Europe EV - Eastern Europe Specification -1-2 Safety Precautions -1-3 Important of laser products - 1-5 preventin

2、g static electricity - 1-6 Block Diagram - 1-8 Schematic Diagrams - 1-10 Assembly - 1-14 RadioFans.CN 收音机爱 好者资料库 1-2 Compact disc player sectionTypeCompact disc player Signal detectionNon-contact optical pick-up (semiconductor laser) Number of channels2 channels Radio sectionFrequency rangesFM 88 MH

3、z - 108 MHz AM 530 kHz - 1,600 kHz AntennasTelescopic antenna for FM Ferrite core antenna for AM Cassette deck sectionTrack4-track 2-channel stereo MotorElectronic governor DC motor for capstan HeadsHard permalloy head for recording/playback, magnetic head for erasure Fast wind timeApprox. 120 sec.

4、(C-60 cassette) GeneralSpeakers10 cm 2 (8 ) Power output2 W per channel, min. RMS, driven into 8 at 1 kHz, with no more than 10% total harmonic distortion (IEC 268-3) Output terminalPHONES 1 ( 3.5 mm, stereo) Power supplyAC 230 V, 50 Hz DC 12 V (“R20/D (13F)” cells 8) Power consumption19 W (power-on

5、 mode) 2.5 W (standby mode) Dimensions440 mm (W) 168 mm (H) 241 mm (D) MassApprox. 3 kg (without batteries) Accessories provided AC power cord 1 Remote control unit 1 Batteries for remote control unit, R03 (UM-4)/AAA (24F) 2 Specification RadioFans.CN 收音机爱 好者资料库 1-3 1. This design of this product co

6、ntains 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 sh

7、ould 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 warranty and will further relieve the manufacture of r

8、esponsibility 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 obt

9、ained 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

10、 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

11、 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 th

12、at 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, co

13、ntrol 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

14、 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 mor

15、e 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, particu

16、larly 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

17、 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

18、 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 F AC TYPE ! Burrs formed during molding may be left over

19、 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

20、 ( ) and ICP ( ) or identified by the mark nearby are critical for safety. (This regulation does not correspond to J and C version.) RadioFans.CN 收音机爱 好者资料库 1-4 1. Service should be performed by qualified personnel only. 2. This equipment has been designed and manufactured to meet international safe

21、ty standards. 3. It is the legal responsibility of the repairer to ensure that these safety standards are maintained. 4. Repairs must be made in accordance with the relevant safety standards. 5. It is essential that safety critical components are replaced by approved parts. 6. If mains voltage selec

22、tor is provided, check setting for local voltage. 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. Repl

23、acement parts must be identical to those used in the original circuits. 2. Any unauthorised design alterations or additions will void the manufacturers guarantee ; furthermore the manufacturer cannot accept responsibility for personal injury or property damage resulting therefrom. 3. Essential safet

24、y critical components are identified by ( ) on the Parts List and by shading on the schematics, and must never be replaced by parts other than those listed in the manual. Please note however that many electrical and mechanical parts in the product have special safety related characteristics. These c

25、haracteristics are often not evident from visual inspection. Parts other than specified by the manufacturer may not have the same safety characteristics as the recommended replacement parts shown in the Parts List of the Service Manual and may create shock, fire, or other hazards. 4. The leads in th

26、e 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 o

27、bserved, and it should be confirmed that they have been returned to normal, after re-assembling. ! 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. (U.K only) 1-5 Important for laser pro

28、ducts 1.CLASS 1 LASER PRODUCT 2.DANGER : Invisible laser radiation when open and inter lock failed or defeated. Avoid 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.CA

29、UTION : The compact disc player uses invisible laser radiation and is equipped with safety switches which prevent emission of radiation when the drawer is open and the safety interlocks have failed or are defeated. It is dangerous to defeat the safety switches. 5.CAUTION : If safety switches malfunc

30、tion, the laser is able to function. 6.CAUTION : Use of controls, adjustments or performance of procedures other than 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 j

31、a suojalukitus ohitettaessa olet alttiina nkymttmlle lasersteilylle.l katso steeseen. ADVARSEL : Usynlig laserstrling ved bning , nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for strling. ADVARSEL : Usynlig laserstrling ved pning,nr sikkerhetsbryteren er avslott. unng utsettelse for str

32、ling. Position and position of labels WARNING LABEL ! CAUTIONPlease use enough caution not to see the beam directly or touch it in case of an adjustment or operation check. DANGER : Invisibie laser radiation when open and interlock or defeated. AVOID DIRECT EXPOSURE TO BEAM (e) VARNING : Osynlig las

33、erstrlning r denna del r ppnad och sprren r urkopplad. Betrakta ej strlen. (s) VARO : Avattaessa ja suojalukitus ohitettaessa olet alttiina nkymttmlle lasersteilylle.l katso steeseen. (d) ADVARSEL :Usynlig laserstrling ved bning , nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for strling

34、. (f) CLASS 1 LASER PRODUCT CLASS 1 LASER PRODUCT CLASS1 LABEL PLACED OUTSIDE THE UNIT WAQRNING LABEL PLACED INSIDE THE UNIT 1-6 Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser dio

35、de in the traverse unit (optical pickup). Take care to prevent this when performing repairs. Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as mechanism unit. Be careful to use proper grounding in the

36、 area where repairs are being performed. 1. Ground the workbench Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optical pickup) on it. 2. Ground yourself Use an anti-static wrist strap to release any static e

37、lectricity built up in your body. 3. Handling the optical pickup 1. In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to t

38、he text.) 2. Do not use a tester to check the condition of the laser diode in the optical pickup. The testers internal power source can easily destroy the laser diode. Handling the traverse unit (optical pickup) 1. Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensit

39、ive, complex unit. 2. Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a time when

40、attaching it to the connector. 3. Handle the flexible cable carefully as it may break when subjected to strong force. 4. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it (caption) Anti-static wrist strap Conductive material (conductive sheet) or iron

41、plate 1-7 1-8 Block Diagram 1-9 1-10 Main Circuit Schematic Diagrams 1-11 1-12 CD Servo Circuit 1-13 1-14 Assembly-1 S1 18 19 S1 S1 10 11 7 5 4 6 3 2 1 1-15 S1 11 12 13 14 15 S4 S3 21 20 S1 18 19 S2 16 17 S4 S1 S1 9 8 1-16 Assembly-2 17 6 7 S10 5 4 3 2 1 8 7 9 S9 11 12 13 S8 10 14 18 19 S6 20 S7 22 21 16 15 S3 S2 S1 23 S4 S5 1-17 1-18 Assembly-3 S7 S7 S6 S8 S8 11 S5 9 8 S 7 FRONT CABINET CD TRAY 1-19 8 S4 10 7 6 S3 S3 S3 S3 S2 5 4 1 3 2 S1 (No.MB062) 2003/11 JVC Euorpe Limited JVC House JVC Budiness Park 12 Priestley Way, London NW2 7BA United Kingdom