RCA-RP7982A-pr-sm 维修电路原理图.pdf

RP7982AAPRIL/01RP7982AAudio/CommunicationLatinAmericaAfterSalesIndianapolis, IN 46290 U.S.A.SERVICE DATA INDEXUSE ISOLATION TRANSFORMER WHEN SERVICINGSAFETY NOTICEComponentshavingspecialsafetycharacteristicsareidentifiedbya( )onschematicsandonthepartslistinthisServiceDataanditsbulletins.Before servicing this instrument, it is important that the service technician read and follow the Safety Precautions in the Basic Service Data.RP7982ABasic Service DataFirstEdition-FirstPrintingCopyright 2001 - Thomson Multimedia, Inc.Printed in U.S.A. - Trademark(s)Registered - Marca(s) Registrada(s)PageNumberGeneralInformation/SafetyPrecautions.1-2Disassembly .2-1Alignments.3-1Troubleshooting Guides .4-1TroubleAids(Waveforms,Voltage,TimingCharts).5-1Replacement Partslist .6-1ExplodedViews .7-1BlockDiagrams.8-1SchematicDiagrams .9-1Circuit Boards.10-1CAUTION: ModificationorrepairofthisunitbyunauthorizedpersonsisadirectviolationofFCCRulesPart68.216andcouldresult in risk of electric shock. You are urged to contact a qualified factory authorized service facility for repairs.RadioFans.CN 收音机爱 好者资料库?5-1? ?RadioFans.CN 收音机爱 好者资料库?5-2? ?3-1? ? ?3-2? ? ?3-3? ? ?3-4? ? ?3-5? ? ?8-17-1?8-38-2SAFETY PRECAUTIONS1. Before returning the instrument to the customer, alwaysmake a safety check of the entire instrument, including, but notlimited to, the following items:a. Be sure that no built-in protective devices are defective and/or have been defeated during servicing. (1) Protectiveshields are provided on this instrument to protect both thetechnician and the customer. Correctly replace all missingprotective shields, including any removed for servicingconvenience. (2) When reassembling the instrument, besure to put back in place all protective devices, including, butnot limited to, nonmetallic control knobs, insulating fishpapers,adjustment and compartment covers/shields, and isolationresistor/capacitor networks. Do not operate this instrumentor permit it to be operated without all protective devicescorrectly installed and functioning. Servicers who defeatsafety features or fail to perform safety checks may beliable for any resulting damage, and may exposethemselves and others to possible injury.b. Be sure that there are no cabinet openings through which anadult or child might be able to insert their fingers and contacta hazardous voltage. Such openings include, but are notlimited to, (1) excessively wide cabinet ventilation slots, and(2) improperly fitted and/or incorrectly secured cabinet covers.c. Leakage Cold Check - With the instrument AC plug removedfrom any AC source, connect an electrical jumper across thetwo AC plug prongs. Place the instrument AC switch in theon position. Connect one lead of an ohmmeter to the AC plugprongs tied together and touch the other ohmmeter lead inturn to each push button/customer control, exposed metalscrews, metallized overlays and to each cable connector. Ifthe measured resistance is less than 1.0 megohm or greaterthan 5.2 megohm an abnormality exists that must be correctedbefore the instrument is returned to the customer. Repeatthis test with the AC switch in the off position.d. Leakage Current Hot CheckOn completely assembled instrument, plug the AC line corddirectly into a 120V AC outlet. (Do not use an isolationtransformer during this test.) Use a leakage current tester ora metering system that complies with American NationalStandards Institute (ANSI) C101.1 Leakage Current forAppliances and Underwriters Laboratories (UL) 1492 (Section67). Measure for current from a known earth ground (metalwaterpipe, conduit, etc.) to all exposed metal or conductiveparts of the instrument (antenna connections, handle bracket,metal cabinet, screwheads, metallic overlays, push-buttons,control shafts, etc.), especially any exposed metal parts thatoffer an electrical return path to the chassis. Any currentmeasured must not exceed 0.5 milliamp. Reverse theinstrument power cord plug in the outlet and repeat the test.ANY MEASUREMENTS NOT WITHIN THE LIMITSSPECIFIED HEREIN INDICATE A POTENTIAL SHOCKHAZARD THAT MUST BE ELIMINATED BEFORERETURNING THE INSTRUMENT TO THE CUSTOMER ORBEFORE CONNECTING TO ANTENNA ORACCESSORIES.e. Interconnected Equipment AC Leakage TestAvoid shock hazards. The instrument, accessory, or cable(s)to which this instrument is connected should have theapplicable sections of the leakage resistance cold check andthe leakage current hot check performed. Do not connectthis instrument to an antenna, cable or accessory thatexhibits excessive leakage currents.2. Read and comply with all caution and safety-related notes on orinside the instrument cabinet, and on the chassis.3. Design Alteration Warning - Do not alter or add to the mechanicalor electrical design of this instrument. Design alterations andadditions, including, but not limited to, circuit modifications andthe addition of items such as auxiliary audio output connections,cables and accessories, etc., might alter the safety characteristicsof this instrument and create a hazard to the user. Any designalterations or additions will void the manufacturers warranty andwill make you, the servicer responsible for personal injury orproperty damage resulting therefrom.4. Observe original lead dress. Take extra care to assure correctlead dress in the following areas: (a) near sharp edges, (b) nearthermally hot parts - be sure that leads and components do nottouch thermally hot parts, and (c) the AC supply. Always inspectin all areas for pinched, out-of-place, or frayed wiring. Do notchange spacing between components and the printed-circuitboard. Check AC power cord for damage.5. Components, parts and/or wiring that appear to have overheatedor are otherwise damaged should be replaced with components,parts or wiring that meet original specifications. Additionally,determine the cause of overheating and/or damage and, ifnecessary, take corrective action to remove any potential safetyhazard.6. PRODUCT SAFETY NOTICE - Many electrical and mechanicalparts have special safety-related characteristics, some of whichare often not evident from visual inspection, nor can the protectionthey give be obtained by replacing them with components ratedfor higher voltage, wattage, etc. Parts that have special safetycharacteristics are identified in this service data by a ( ! ) onschematics and in the parts list. Use of a substitute replacementthat does not have the same safety characteristics as therecommended replacement part in this service data parts listmight create shock, fire and/or other hazards. Product Safety isunder review continuously and new instructions are issuedwhenever appropriate. For the latest information, always consultthe appropriate current service literature.1-2?1-3?1-4? ?9-29-1BEFORE REPLACING PARTS, READ THE FOLLOWING:REPLACEMENT PARTSWarranty Status of Assemblies and Parts - All assemblies and components shown in this part list are eligible for warranty exchange or replacement except those with a dot shown to the left of the Description. Assemblies and components with a dot to the left of the Description are NOT eligible for warranty exchange or replacement.Warranty replacement of cabinet parts requires the approval of a Thomson Consumer Electronics Field Service Manager.Warranty Status and Specifications of assemblies and components are subject to change without notice. Consult the TCE Parts Pricing Microfiche for the latest warranty status information.Approved Substitute Stock Numbers - Before ordering stock numbers in the part list, look for an approved substitute stock number in the current Price Schedule. This will minimize your service time and avoid ordering parts you already have in stock.NOTE: When ordering components that are listed more than once in this part list, always adhere to the serial number application guidelines given in the description column. If a serial number application guideline is not given, always select the component with a value, rating, other specification or identification marking(s) that match those of the corresponding component in the instrument you are servicing.PRODUCT SAFETY NOTE: Components marked with a critical safety symbol have special characteristics important to safety. Before replacing any of these components, carefully read the PRODUCT SAFETY NOTICE in the basic service data. Do not degrade the safety of the set through improper servicing. Although assemblies as a whole may not be marked with a critical safety symbol , replacement of assemblies with other assemblies not approved may result in a safety hazard.6-1Septembe 1999RP7982ACritical Safety SymbolNot Eligible For WarrantyStockSymbolDescriptionDrawingSymbolStockDescriptionDrawingRP7982ACABINET & CHASSIS ASY14A32194GRILLE SPEAKER L41-02223-0124A32195GRILLE SPEAKER R41-02233-0039A32196DOOR CASS66-02233-0043A32197SPRING CASS DOOR36-02233-00538A32198BRACKET CASS DOOR48-02233-0366A32200LENS DISPLAY43-02233-01798A32201CABINET FRONT60-02233-001095A32005SPEAKER 4 8 OHM 3W14-04008-451343A32202KNOB PLAY52-02233-021443A32203KNOB TUNING52-02233-011643A32204KNOB REPEAT/PROG/SHUFFLE52-02233-031743A32204KNOB REPEAT/PROG/SHUFFLE52-02233-031843A32205KNOB VOLUME52-02233-00299A32206DOOR CD66-02233-013063A32207DISPLAY LCD91-02233-10483A32033SPRING CD DOOR36-07999-015243A32208KNOB CASS PAUSE53-02233-055343A32209KNOB CASS STOP/EJECT53-02233-045443A32210KNOB CASS F.F.53-02233-035543A32211KNOB CASS REWIND53-02233-025643A32212KNOB CASS PLAY53-02233-015743A32213KNOB CASS RECORD53-02233-006943A32214KNOB FUNCTION52-02233-057245A32215FOOT RUBBER FOAM81-00154-007345A32216FOOT RUBBER81-03310-007498A32217CABINET REAR61-02233-00783A31735SPRING, BATTERY -74-07936-02792A31736CONTACT, BATTERY +74-07936-01803A32218SPRING BATTERY - AA36-02322-02813A32219SPRING BATTERY + AA36-03316-01823A31730SPRING, BATTERY +/-74-07936-008382A32220ANTENNA ROD23-02233-00859A32221DOOR BATTERY58-02233-008678A32222HANDLE57-02233-00CD 73A32223CD MECHANISM00-0033001CASSETTE ASY42A32514LEVER EJECT KICK201010011B111A32515PAUSE ROD ASY201N032139A26216LEAF SWITCH20101023A362A26219PINCH ROLLER AEM ASY201N06A385A26220R.F. CLUTCH ASY201N12A492A26225FLYWHEEL ASY201N13A511A26226BELT FEEL20109064A521A26227BELT MIN201110765672A26229MOTOR507MT0040D201198589DIODE 1N414802-04148-00RD202198597DIODE02-04001-00IC201EA33X9424IC03-07312-00Q201148256TRANSISTOR 2GC945P01-00945-16Q202148256TRANSISTOR 2GC945P01-00945-16Q203148256TRANSISTOR 2GC945P01-00945-16Q204148256TRANSISTOR 2GC945P01-00945-16SW20139A26984SWITCH PUSH16-10602-01WELECTRICAL COMPONENTSC53018A32517CAP CERAMIC .02UF0500203006-1StockSymbolDescriptionDrawingSymbolStockDescriptionDrawing6-2REPLACEMENT PARTS(Continued)Septembe 1999D101198589DIODE 1N414802-04148-00RD102198589DIODE 1N414802-04148-00RD10316A15172DIODE02-00201-00D10416A15172DIODE02-00201-00D10516A31281DIODE02-00321-00D10716A31281DIODE02-00321-00D301198589DIODE 1N414802-04148-00RD501198597DIODE02-04001-00D502198597DIODE02-04001-00D504198597DIODE02-04001-00D504198597DIODE02-04001-00D505198589DIODE 1N414802-04148-00RD506198589DIODE 1N414802-04148-00RD601198589DIODE 1N414802-04148-00RD602198589DIODE 1N414802-04148-00RD603198589DIODE 1N414802-04148-00RD604198589DIODE 1N414802-04148-00RD605198589DIODE 1N414802-04148-00RD607198589DIODE 1N414802-04148-00RD608198589DIODE 1N414802-04148-00RD609198589DIODE 1N414802-04148-00RD610198589DIODE 1N414802-04148-00RD611198589DIODE 1N414802-04148-00RD612198589DIODE 1N414802-04148-00RD613198589DIODE 1N414802-04148-00RD614198589DIODE 1N414802-04148-00RD615198589DIODE 1N414802-04148-00RD616198589DIODE 1N414802-04148-00RD617198589DIODE 1N414802-04148-00RD619198589DIODE 1N414802-04148-00RD620198589DIODE 1N414802-04148-00RD622198589DIODE 1N414802-04148-00RIC10133A32225IC TA2132F03-02132-01IC10233A32226IC TA209903-02099-00IC30133A11623IC TC4052BP03-04552-00IC30233A11623IC TC4052BP03-04552-00IC30333A32227IC TC9235P03-09235-00IC50133A23328IC TA8227P03-08227-00IC60133A32228IC TC9309AF-12803-09309-04L10136A32232COIL FM09-45045-00L10236A32232COIL FM09-45045-00L10336A32233COIL 10UH09-70101-00L10436A32234COIL AM09-06224-54L60136A32235COIL 100UH09-70102-00L60236A32233COIL 10UH09-70101-00Q10115A15171TRANSISTOR01-09018-07Q102219079TRANSISTOR 2SA733P01-00733-16Q103148256TRANSISTOR 2GC945P01-00945-16Q104148256TRANSISTOR 2GC945P01-00945-16Q105219079TRANSISTOR 2SA733P01-00733-16Q106148256TRANSISTOR 2GC945P01-00945-16Q107148256TRANSISTOR 2GC945P01-00945-16Q301148256TRANSISTOR 2GC945P01-00945-16Q302148256TRANSISTOR 2GC945P01-00945-16Q303148256TRANSISTOR 2GC945P01-00945-16Q304148256TRANSISTOR 2GC945P01-00945-16Q50115A31744TRANSISTOR 8050C01-08050-03SQ50215A31744TRANSISTOR 8050C01-08050-03SQ50315A31744TRANSISTOR 8050C01-08050-03SQ50415A31744TRANSISTOR 8050C01-08050-03SQ50515A31744TRANSISTOR 8050C01-08050-03SQ50615A26815TRANSISTOR 2SD201201-02102-00Q507219079TRANSISTOR 2SA733P01-00733-16Q508148256TRANSISTOR 2GC945P01-00945-16Q50915A10368TRANSISTOR KSA928AY01-00928-00Q51015A31744TRANSISTOR 8050C01-08050-03SQ511219079TRANSISTOR 2SA733P01-00733-16Q601148256TRANSISTOR 2GC945P01-00945-16Q602219079TRANSISTOR 2SA733P01-00733-16Q603219079TRANSISTOR 2SA733P01-00733-16Q604148256TRANSISTOR 2GC945P01-00945-16Q605148256TRANSISTOR 2GC945P01-00945-16Q606219079TRANSISTOR 2SA733P01-00733-16Q607148256TRANSISTOR 2GC945P01-00945-16Q614148256TRANSISTOR 2GC945P01-00945-16Q615148256TRANSISTOR 2GC945P01-00945-16Q616148256TRANSISTOR 2GC945P01-00945-16Q617148256TRANSISTOR 2GC945P01-00945-16SKT-001 34A32236SOCKET AC12-00004-09MSW50339A32237SWITCH SLIDE16-10403-02MSW60139A26820SWITCH TACT16-10102-03SSW60239A26820SWITCH TACT16-10102-03SSW60339A26820SWITCH TACT16-10102-03SSW61539A32010SWITCH CD DOOR16-00000-09T10261A32230TRANSFORMER 10MM AM900-02908-00029-04T10361A32231TRANSFORMER 10MM 1A1014N08-01014-02X60175A32229CRYSTAL 7.2MHZ04-07200-00HZ50116A12906DIODE ZENER 8.2V 1/2W02-50082-00Z50216A32224DIODE ZENER 6.2V .5W02-50063-00Z50316A31282DIODE,ZENER 10V 1/2W02-50100-00Z60116A15177DIODE02-50062-00MISCELLANEOUSHEA245945HEADPHONE73-02233-00LAB4A32519LABEL POPPOPRP7982UCEUCRP7982UCE & CARE GUIDEUCRP7982RP7986ACABINET & CHASSIS ASY14A32194GRILLE SPEAKER L41-02223-0124A32195GRILLE SPEAKER R41-02233-0039A32196DOOR CASS66-02233-0043A32197SPRING CASS DOOR36-02233-00538A32198BRACKET CASS DOOR48-02233-0366A32200LENS DISPLAY43-02233-016-2StockSymbolDescriptionDrawingSymbolStockDescriptionDrawing6-3REPLACEMENT PARTS(Continued)Septembe 1999798A32201CABINET FRONT60-02233-001095A32005SPEAKER 4 8 OHM 3W14-04008-451343A32202KNOB PLAY52-02233-021443A32203KNOB TUNING52-02233-011643A32204KNOB REPEAT/PROG/SHUFFLE52-02233-031743A32204KNOB REPEAT/PROG/SHUFFLE52-02233-031843A32205KNOB VOLUME52-02233-00299A32206DOOR CD66-02233-013063A32207DISPLAY LCD91-02233-10483A32033SPRING CD DOOR36-07999-015243A32208KNOB CASS PAUSE53-02233-055343A32209KNOB CASS STOP/EJECT53-02233-045443A32210KNOB CASS F.F.53-02233-035543A32211KNOB CASS REWIND53-02233-025643A32212KNOB CASS PLAY53-02233-015743A32213KNOB CASS RECORD53-02233-006943A32214KNOB FUNCTION52-02233-057245A32215FOOT RUBBER F