Thomson-RP7992A-pr-sm 维修电路原理图.pdf

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1、RP7992AAPRIL/01RP7992AAudio/CommunicationLatinAmericaAfterSalesIndianapolis, IN 46290 U.S.A.SERVICE DATA INDEXUSE ISOLATION TRANSFORMER WHEN SERVICINGSAFETY NOTICEComponentshavingspecialsafetycharacteristicsareidentifiedbya( )onschematicsandonthepartslistinthisServiceDataanditsbulletins.Before servi

2、cing this instrument, it is important that the service technician read and follow the Safety Precautions in the Basic Service Data.RP7992ABasic Service DataFirstEdition-FirstPrintingCopyright 2001 - Thomson Multimedia, Inc.Printed in U.S.A. - Trademark(s)Registered - Marca(s) Registrada(s)PageNumber

3、GeneralInformation/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: Modificationorrepairofthisunitbyunauthorizedp

4、ersonsisadirectviolationofFCCRulesPart68.216andcouldresult 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SAFETY PRECAUTIONS1. Before returning the instrument to the customer, always make asafety check of the ent

5、ire instrument, including, but not limited to, thefollowing items:a. Be sure that no built-in protective devices are defective and/orhave been defeated during servicing. (1) Protective shields areprovided on this instrument to protect both the technician and thecustomer. Correctly replace all missin

6、g protective shields, includingany removed for servicing convenience. (2) When reassemblingthe instrument, be sure to put back in place all protective devices,including, but not limited to, nonmetallic control knobs, insulatingfishpapers, adjustment and compartment covers/shields, andisolation resis

7、tor/capacitor networks. Do not operate thisinstrument or permit it to be operated without all protectivedevices correctly installed and functioning. Servicers whodefeat safety features or fail to perform safety checks may beliable for any resulting damage, and may expose themselvesand others to poss

8、ible injury.b. Be sure that there are no cabinet openings through which an adultor child might be able to insert their fingers and contact ahazardous voltage. Such openings include, but are not limited to,(1) excessively wide cabinet ventilation slots, and (2) improperlyfitted and/or incorrectly sec

9、ured cabinet covers.c. Leakage Cold Check - With the instrument AC plug removedfrom any AC source, connect an electrical jumper across the twoAC plug prongs. Place the instrument AC switch in the onposition. Connect one lead of an ohmmeter to the AC plug prongstied together and touch the other ohmme

10、ter lead in turn to eachpush button/customer control, exposed metal screws, metallizedoverlays and to each cable connector. If the measured resistanceis less than 1.0 megohm or greater than 5.2 megohm an abnormalityexists that must be corrected before the instrument is returned tothe customer. Repea

11、t this test with the AC switch in the offposition.d. Leakage Current Hot CheckOn completely assembled instrument, plug the AC line corddirectly into a 120V AC outlet. (Do not use an isolation transformerduring this test.) Use a leakage current tester or a metering systemthat complies with American N

12、ational Standards Institute (ANSI)C101.1 Leakage Current for Appliances and UnderwritersLaboratories (UL) 1492 (Section 67). Measure for current from aknown earth ground (metal waterpipe, conduit, etc.) to all exposedmetal or conductive parts of the instrument (antenna connections,handle bracket, me

13、tal cabinet, screwheads, metallic overlays,push-buttons, control shafts, etc.), especially any exposed metalparts that offer an electrical return path to the chassis. Any currentmeasured must not exceed 0.5 milliamp. Reverse the instrumentpower cord plug in the outlet and repeat the test.ANY MEASURE

14、MENTS NOT WITHIN THE LIMITSSPECIFIED HEREIN INDICATE A POTENTIAL SHOCKHAZARD THAT MUST BE ELIMINATED BEFORERETURNING THE INSTRUMENT TO THE CUSTOMEROR BEFORE CONNECTING TO ANTENNA ORACCESSORIES.e. Interconnected Equipment AC Leakage TestAvoid shock hazards. The instrument, accessory, or cable(s) towh

15、ich this instrument is connected should have the applicablesections of the leakage resistance cold check and the leakagecurrent hot check performed. Do not connect this instrument to anantenna, cable or accessory that exhibits excessive leakage currents.2. Read and comply with all caution and safety

16、-related notes on or insidethe instrument cabinet, and on the chassis.3. Design Alteration Warning - Do not alter or add to the mechanical orelectrical design of this instrument. Design alterations and additions,including, but not limited to, circuit modifications and the addition ofitems such as au

17、xiliary audio output connections, cables and accessories,etc., might alter the safety characteristics of this instrument and createa hazard to the user. Any design alterations or additions will void themanufacturers warranty and will make you, the servicer responsiblefor personal injury or property

18、damage resulting therefrom.4. Observe original lead dress. Take extra care to assure correct lead dressin the following areas: (a) near sharp edges, (b) near thermally hot parts- be sure that leads and components do not touch thermally hot parts,and (c) the AC supply. Always inspect in all areas for

19、 pinched, out-of-place, or frayed wiring. Do not change spacing between componentsand the printed-circuit board. Check AC power cord for damage.5. Components, parts and/or wiring that appear to have overheated or areotherwise damaged should be replaced with components, parts orwiring that meet origi

20、nal specifications. Additionally, determine thecause of overheating and/or damage and, if necessary, take correctiveaction to remove any potential safety hazard.6. PRODUCT SAFETY NOTICE - Many electrical and mechanicalparts have special safety-related characteristics, some of which areoften not evid

21、ent from visual inspection, nor can the protection theygive be obtained by replacing them with components rated for highervoltage, wattage, etc. Parts that have special safety characteristics areidentified in this service data by a (|) on schematics and in the parts list.Use of a substitute replacem

22、ent that does not have the same safetycharacteristics as the recommended replacement part in this servicedata parts list might create shock, fire and/or other hazards. ProductSafety is under review continuously and new instructions are issuedwhenever appropriate. For the latest information, always c

23、onsult theappropriate current service literature.1-2RadioFans.CN 收音机爱 好者资料库7-1RP-7992A MECHANISM ASSEMBLY7-2RP-7992A MECHANISM ASSEMBLYBEFORE REPLACING PARTS, READ THE FOLLOWING:REPLACEMENT PARTSWarranty Status of Assemblies and Parts - All assemblies and components shown in this part list are eligi

24、ble 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 Co

25、nsumer 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

26、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 applicati

27、on 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

28、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 a

29、s 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.6-1January1999PartsListCritical Safety SymbolNot Eligible For WarrantyStockSymbolDescriptionDrawingSymbolStockDescriptionDrawingRP-7992ACABINET & CHA

30、SSIS14A30975GRILLE SPEAKER R0102-41621-0029A28860DOOR CASS0101-43364-0036A28861LENS CASS DOOR0101-43358-0042A28862HOLDER CASS0101-43359-0056A28863LENS DISPLAY0101-43357-00698A28864CABINET FRONT0101-43342-0073A28865SPRING CASS DOOR0102-41624-0086A28866LENS DIAL0101-43356-001043A28867BUTTONS CD CONTRO

31、L L0101-43890-001014A28903PANEL CASS KEY INSERT0101-43346-001362A28868MECHANISM CASSETTE ASY0115-11100-1H1443A28869KNOB CASS PAUSE0101-43691-001543A28870KNOB CASS STOP/EJECT0101-43692-001643A28871KNOB CASS FF0101-43693-001743A28872KNOB CASS REW0101-43694-001843A28873KNOB CASS PLAY0101-43695-001943A2

32、8874KNOB CASS OTR0101-43696-00212A28875LEVER BAND/FUNCTION0101-43759-002243A28876KNOB SWITCH0101-43349-002343A28877KNOB D.BB0101-43351-002443A28878KNOB VOLUME0101-43350-00312A28879PLATE CHUCKING0101-32546-01322A28880PLATE CD CONTROL KNOB0101-43360-00332A28881MAGNET RING0110-30577-00342A28882PLATE CH

33、UCKING0102-31274-00359A28883DOOR CD0101-43344-00363A28884SPRING CD DOOR0102-41623-003798A28885CABINET BACK0101-43343-003882A28886ANTENNA WHIP0114-06141-004078A28887HANDLE0101-43345-00429A28888DOOR BATTERY0101-43355-004545A28889FOOT RUBBER CABINET BACK0109-40346-005088A28890TRANSFORMER0326-74832-16A5

34、62A28891GEAR CD DOOR0101-43490-005773A28892MECHANISM CD ASY0115-60105-0E5860A28893INSULATOR RUBBER BLUE0109-30270-006160A28894INSULATOR RUBBER BLK0109-30270-016543A28895KNOB TUNING0101-43352-00662A28896GEAR PVC0101-43491-017343A28869KNOB CASS PAUSE0101-43691-007445A28897FOOT RUBBER CAB FRT0109-40364

35、-00772A28898HOLDER GEAR CASS DOOR0101-43489-00782A28899GEAR CASS DOOR0101-43488-007989A28900GRILLE SPEAKER L0102-41622-008095A28901SPEAKER0118-08077-18942A28891GEAR CD DOOR0101-43490-00982A28902CONTACT SPRING BATT0119-30284-00CASSETTE MECHANISM2339A28935SWITCH LEAF21-01-023A352A28936ARM PINCH ROLLER

36、A-04392A28937ARM RF ASSYA-094229A28938BELT RFA-4001-0A4462A28939FLYWHEEL ASYA-10512A28940GEAR REEL ASYA-06525A28941GEAR TAKE-UPA-07532A28942LEVER REC SAFETYA-3017-06-1StockSymbolDescriptionDrawingSymbolStockDescriptionDrawing6-2REPLACEMENT PARTS(Continued)January1999566A28943PULLEYA-3018-05929A28944

37、BELT MAINA-4003-3A622A28945LEVER EJECT SLIDEA-3019-0HV6872A28946MOTORM9T12U24-18662A28947HEAD R/PBS-09ELECTRICAL COMPONENTSC6174A28934CAP CER 0.02UF +80-20% 50V0336-30002-50C8054A28933CAP LYTC 2200MFD 20% 25V0335-42200-25CF30336A28930FILTER CER0342-2455Y-00COR66A28931CORD AC POWER0349-30005-10D101EA

38、16X0878DIODE 1N41480344-14148-01D102EA16X0878DIODE 1N41480344-14148-01D103EA16X0878DIODE 1N41480344-14148-01D301EA16X0878DIODE 1N41480344-14148-01D302EA16X0878DIODE 1N41480344-14148-01D30316A26092DIODE AFC0344-12638-01D60116A28912DIODE 1N40040344-14004-08D602EA16X0878DIODE 1N41480344-14148-01D603EA1

39、6X0878DIODE 1N41480344-14148-01D604EA16X0878DIODE 1N41480344-14148-01D80116A28912DIODE 1N40040344-14004-08D80216A28912DIODE 1N40040344-14004-08D80316A28912DIODE 1N40040344-14004-08D80416A28912DIODE 1N40040344-14004-08DIO17A28914DIODE LED GREEN0346-20002-00DIS63A28915DISPLAY LCD0347-40059-18FIL36A260

40、90FILTER CER 10.7MHZ0342-1107M-24FIL36A28911FILTER CER0342-107MS-2M0IC10133A28924IC KS57C0104-060330-10406-15IC10233A26828IC KS9282B0330-92828-15IC10333A28926IC KA9270D0330-92700-15IC10433A28925IC KA9220C0330-9220C-15IC10533A28923IC KA9258D0330-09258-015IC30133A28908IC TA8164P0330-08164-01IC302EA33X

41、9010IC TA7343AP0330-7343A-01IC50133A28920IC BA3313L0330-3313L-17IC50133A28919IC BA3312N0330-3312N-17IC60133A28909IC KIA6269P0330-6269P-40IC60233A28910IC NJM7808FA0330-7808F-44MEC73A28932MECHANISM CD ASY0115-60115-00APJ60141A28904JACK HEADPHONE0322-63511-01Q10115A28833TRANSISTOR KSR10030329-01003-17Q

42、10215A28922TRANSISTOR SS9012G0329-9012G-17Q10315A28922TRANSISTOR SS9012G0329-9012G-17Q60115A28907TRANSISTOR0329-3198G-22Q60215A28907TRANSISTOR0329-3198G-22SOC8A08928SOCKET AC0322-30021-11ASOC8A08928SOCKET AC0322-30021-11ASW30139A28906SWITCH SLIDE0323-20375-00SW60139A28905SWITCH SLIDE0323-20294-00SWI

43、39A28918SWITCH REC0324-90088-04SWI39A28918SWITCH REC0324-90088-04SWI39A28921SWITCH QUIT ACTION0323-60208-03SWI39A28916SWITCH PUSH0324-20085-13SWI39A28913SWITCH TACT0324-10054-04TRA88A28929TRANSFORMER POWER0326-14141-241VR40149A28917RES CONTROL0325-10207-25X10141A28927RESONATOR CER 16.93MHZ0363-1693M-01MISCELLANEOUSLAB77A28948LABEL POPPOPRP7992USEUCRP7992USE & CARE GUIDEUCRP79926-2