RCA-RP7930B-pr-sm 电路图 维修手册.pdf

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1、5-1 RP-7930B VOLTAGE CHART RadioFans.CN 收音机爱 好者资料库 5-2 RP-7930B VOLTAGE CHART RadioFans.CN 收音机爱 好者资料库 RP7930B APRIL/01 RP7930B Audio/Communication LatinAmericaAfterSales Indianapolis, IN 46290 U.S.A. SERVICE DATA INDEX USE ISOLATION TRANSFORMER WHEN SERVICING SAFETY NOTICE Componentshavingspecialsaf

2、etycharacteristicsareidentifiedbya( )onschematicsandonthepartslistinthisServiceDataanditsbulletins. Before servicing this instrument, it is important that the service technician read and follow the Safety Precautions in the Basic Service Data. RP7930B Basic Service Data FirstEdition-FirstPrinting Co

3、pyright 2001 - Thomson Multimedia, Inc. Printed in U.S.A. - Trademark(s)Registered - Marca(s) Registrada(s) Page Number GeneralInformation/SafetyPrecautions.1-2 Disassembly .2-1 Alignments.3-1 Troubleshooting Guides .4-1 TroubleAids(Waveforms,Voltage,TimingCharts).5-1 Replacement Partslist .6-1 Expl

4、odedViews .7-1 BlockDiagrams.8-1 SchematicDiagrams .9-1 Circuit Boards.10-1 CAUTION: ModificationorrepairofthisunitbyunauthorizedpersonsisadirectviolationofFCCRulesPart68.216andcould result in risk of electric shock. You are urged to contact a qualified factory authorized service facility for repair

5、s. RadioFans.CN 收音机爱 好者资料库 3-1 RP-7930B ALIGNMENTS 3-2 RP-7930B ALIGNMENTS 3-3 RP-7930B ALIGNMENTS 3-4 RP-7930B ALIGNMENTS 3-5 RP-7930B ALIGNMENTS 3-6 RP-7930B ALIGNMENTS 8-7 BLOCK DIAGRAM RP-7930B 1-3 RP-7930B SPECIFICATIONS 1-4 RP-7930B SPECIFICATIONS CABINET AND CHASSIS ASSEMBLY 7-1 8-1 RP-7930B

6、IC LEAD IDENTIFICATION 8-2 RP-7930B IC LEAD IDENTIFICATIONS 8-3 RP-7930B IC LEAD IDENTIFICATIONS ? 8-4 RP-7930B IC LEAD IDENTIFICATIONS 8-5 RP-7930B IC LEAD IDENTIFICATIONS 8-6 RP-7930B IC LEAD IDENTIFICATIONS SAFETY PRECAUTIONS 1. Before returning the instrument to the customer, always make a safet

7、y check of the entire instrument, including, but not limited to, the following items: a. Be sure that no built-in protective devices are defective and/ or have been defeated during servicing. (1) Protective shields are provided on this instrument to protect both the technician and the customer. Corr

8、ectly replace all missing protective shields, including any removed for servicing convenience. (2) When reassembling the instrument, be sure to put back in place all protective devices, including, but not limited to, nonmetallic control knobs, insulating fishpapers, adjustment and compartment covers

9、/shields, and isolation resistor/capacitor networks. Do not operate this instrument or permit it to be operated without all protective devices correctly installed and functioning. Servicers who defeat safety features or fail to perform safety checks may be liable for any resulting damage, and may ex

10、pose themselves and others to possible injury. b. Be sure that there are no cabinet openings through which an adult or child might be able to insert their fingers and contact a hazardous voltage. Such openings include, but are not limited to, (1) excessively wide cabinet ventilation slots, and (2) i

11、mproperly fitted and/or incorrectly secured cabinet covers. c. Leakage Cold Check - With the instrument AC plug removed from any AC source, connect an electrical jumper across the two AC plug prongs. Place the instrument AC switch in the on position. Connect one lead of an ohmmeter to the AC plug pr

12、ongs tied together and touch the other ohmmeter lead in turn to each push button/customer control, exposed metal screws, metallized overlays and to each cable connector. If the measured resistance is less than 1.0 megohm or greater than 5.2 megohm an abnormality exists that must be corrected before

13、the instrument is returned to the customer. Repeat this test with the AC switch in the off position. d. Leakage Current Hot Check On completely assembled instrument, plug the AC line cord directly into a 120V AC outlet. (Do not use an isolation transformer during this test.) Use a leakage current te

14、ster or a metering system that complies with American National Standards Institute (ANSI) C101.1 Leakage Current for Appliances and Underwriters Laboratories (UL) 1492 (Section 67). Measure for current from a known earth ground (metal waterpipe, conduit, etc.) to all exposed metal or conductive part

15、s of the instrument (antenna connections, handle bracket, metal cabinet, screwheads, metallic overlays, push-buttons, control shafts, etc.), especially any exposed metal parts that offer an electrical return path to the chassis. Any current measured must not exceed 0.5 milliamp. Reverse the instrume

16、nt power cord plug in the outlet and repeat the test. ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE INSTRUMENT TO THE CUSTOMER OR BEFORE CONNECTING TO ANTENNA OR ACCESSORIES. e. Interconnected Equipment AC Leaka

17、ge Test Avoid shock hazards. The instrument, accessory, or cable(s) to which this instrument is connected should have the applicable sections of the leakage resistance cold check and the leakage current hot check performed. Do not connect this instrument to an antenna, cable or accessory that exhibi

18、ts excessive leakage currents. 2. Read and comply with all caution and safety-related notes on or inside the instrument cabinet, and on the chassis. 3. Design Alteration Warning - Do not alter or add to the mechanical or electrical design of this instrument. Design alterations and additions, includi

19、ng, but not limited to, circuit modifications and the addition of items such as auxiliary audio output connections, cables and accessories, etc., might alter the safety characteristics of this instrument and create a hazard to the user. Any design alterations or additions will void the manufacturers

20、 warranty and will make you, the servicer responsible for personal injury or property damage resulting therefrom. 4. Observe original lead dress. Take extra care to assure correct lead dress in the following areas: (a) near sharp edges, (b) near thermally hot parts - be sure that leads and component

21、s do not touch thermally hot parts, and (c) the AC supply. Always inspect in all areas for pinched, out-of-place, or frayed wiring. Do not change spacing between components and the printed-circuit board. Check AC power cord for damage. 5. Components, parts and/or wiring that appear to have overheate

22、d or 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, if necessary, take corrective action to remove any potential safety hazard. 6. PRODUCT SAFETY NOTICE - Many electrical

23、 and mechanical parts have special safety-related characteristics, some of which are often not evident from visual inspection, nor can the protection they give be obtained by replacing them with components rated for higher voltage, wattage, etc. Parts that have special safety characteristics are ide

24、ntified in this service data by a ( ! ) on schematics and in the parts list. Use of a substitute replacement that does not have the same safety characteristics as the recommended replacement part in this service data parts list might create shock, fire and/or other hazards. Product Safety is under r

25、eview continuously and new instructions are issued whenever appropriate. For the latest information, always consult the appropriate current service literature. 1-2 ? RP-7930B SPECIFICATIONS ? RP-7930B SPECIFICATIONS 4-1 RP-7930B TROUBLESHOOTING GUIDES 4-2 RP-7930B TROUBLESHOOTING GUIDES BEFORE REPLA

26、CING PARTS, READ THE FOLLOWING: REPLACEMENT PARTS Warranty 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 th

27、e 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.

28、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

29、 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 valu

30、e, 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 compon

31、ents, 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 saf

32、ety hazard. 6-1 March2000 RP7930B Critical Safety Symbol Not Eligible For Warranty StockSymbolDescriptionDrawingSymbolStockDescriptionDrawing RP-7930B CABINET & CHASSIS 16A26787LENS, CASSETTE DOOR43-07930-02 29A26788DOOR, CASSETTE66-07930-02 33A26789SPRING, CASSETTE DOOR36-07930-00 46A28734LENS, DIS

33、PLAY CD43-07930-01 589A26791GRILLE, NET R41-07930-01 645A26792FOOT, RUBBER81-00088-00H 798A26793PANEL, FRONT60-07930-01 1443A28737BUTTON, R CD53-07931-01 1543A28736BUTTON, L CD53-07931-00 1789A26799GRILLE, NET L41-07930-00 1843A25141KNOB, TUNING51-00088-00 3443A28735KEY, CASSETTE COMMAND53-07930-01

34、403A28739SPRING, BATTERY TERMINAL74-13244-00B 4298A26800CABINET, REAR61-07930-01 459A25146DOOR, BATTERY58-00088-00 4638A25143SPRING, BATTERY74-13244-01A 4843A26802KNOB, SLIDE52-00088-00 509A30713COVER, HANDLE57-07930-02 5178A26803HANDLE57-07930-01 5543A25134BUTTON, BASS BOOST53-00088-02 5643A25150KN

35、OB, ROTARY VOLUME51-00088-02 662A28743PLATE, CLAMPER39-07930-06 672A25164HOLDER, CLAMPER55-00141-01 682A28744CLAMPER55-09019-01A 6960A26917FELT68-00023-00 702A28745MAGNET97-09019-00 729A26811DOOR, CD66-07930-01 7343A25160BUTTON, EJECT CD53-00088-03 743A28738SPRING, CD DOOR OPEN36-00088-01D 783A26814

36、SPRING, CD DOOR36-07930-01 COR66A21431CORD, AC/POWER30-00030-00G MEC73A28740MECHANISM, CD ASY00-00231-01 CASSETTE MECHANISM 45A26780REEL, TAKEUP ASY003530301 55A26781REEL, SUPPLY ASY003530031 72A25203GEAR FF000110070 82A26782ARM, RS000110069 311A25204ROLLER ARM ASY002328301 342A26783ARM, RF ASY01112

37、0301 361A25205BELT, FLYWHEEL011135015 372A25206FLYWHEEL, ASY009036301 381A25207BELT, MAIN009064085 406A25208PULLEY005036003 482A25209SLIDER, E030014002 4939A25210SWITCH, MAIN020428100 5172A22523MOTOREG-530AD-9B 5262A25211HEAD R/PYB-BS0951 CAS62A25137CASSETTE MECHANISM94-10200-02 ELECTRICAL COMPONENT

38、S ANT82A26821ANTENNA, ROD23-07930-00 CF10136A25175FILTER09-50107-20T CF10236A25176FILTER09-00455-01T D101EA16X0878DIODE 1N414802-04148-00 D102EA16X0878DIODE 1N414802-04148-00 D10316A11218DIODE FV-104302-01043-00 D10417A25173DIODE LED02-50000-02T 6-1 StockSymbolDescriptionDrawingSymbolStockDescriptio

39、nDrawing 6-2 REPLACEMENT PARTS (Continued) March2000 D201198597DIODE 1N400102-04001-00 D202198597DIODE 1N400102-04001-00 D203198597DIODE 1N400102-04001-00 D20416A14915DIODE ZENER02-50068-00 D205EA16X0878DIODE 1N414802-04148-00 D206EA16X0878DIODE 1N414802-04148-00 D20716A24329DIODE ZENER02-50075-00 D

40、208EA16X0878DIODE 1N414802-04148-00 D801EA16X0878DIODE 1N414802-04148-00 D802EA16X0878DIODE 1N414802-04148-00 D807EA16X0878DIODE 1N414802-04148-00 D808EA16X0878DIODE 1N414802-04148-00 D810EA16X0878DIODE 1N414802-04148-00 IC101EA33X9422IC AN720503-07205-00 IC10233A25174IC AN702403-07024-00 IC201EA33X

41、9424IC AN731203-07312-00 IC20233A25179IC TA7769P03-07769-00 IC80133A26826IC KA9220B03-09220-01 IC80233A26828IC KS9282B03-09282-00 IC80333A26827IC KA927003-09270-00 IC80433A26829IC KS57C0104-1203-57010-43 IC80533A26775IC KA9258D03-09258-00 J20141A25180JACK12-00035-31 LCD163A26831DISPLAY LCD91-00088-0

42、3 Q20115A26816TRANSISTOR 9013G01-09013-07 Q20215A11215TRANSISTOR 9014C01-09014-03 Q20315A26816TRANSISTOR 9013G01-09013-07 Q20415A11215TRANSISTOR 9014C01-09014-03 Q20515A11215TRANSISTOR 9014C01-09014-03 Q20615A26815TRANSISTOR 2SD201201-02012-00 Q20715A15170TRANSISTOR 9014C01-09015-03 Q20815A11215TRAN

43、SISTOR 9014C01-09014-03 Q20915A11215TRANSISTOR 9014C01-09014-03 Q80115A10368TRANSISTOR KSA928A-Y01-00928-00 Q80215A12584TRANSISTOR DTC124ES01-00124-05 Q80315A25193TRANSISTOR 2SA131701-01317-00 SOC8A25151SOCKET AC12-00004-09 SPE95A28741SPEAKER14-03508-340 SW139A26820SWITCH TACT16-10102-03S SW10139A26

44、770SWITCH SLIDE16-10202-44L SW239A26820SWITCH TACT16-10102-03S SW20139A25182SWITCH PUSH16-10902-02L SW20239A25187SWITCH PUSH16-10202-15L SW20339A25183SWITCH SLIDE16-10603-09L SW20439A25184SWITCH SLIDE16-10203-58L SW339A26820SWITCH TACT16-10102-03S SW439A26820SWITCH TACT16-10102-03S SW539A26820SWITCH TACT16-10102-03S SW639A26820SWITCH TACT16-10102-03S SWI39A25181SWITCH MICRO CD DOOR16-10101-07H SWI39A26818SWITCH LEAF BATTERY11-00088-15A SWI39A28742SWITCH LEAF31-60350-54 TRA88A25152TRANSFORMER POWER15-00088-05 X80141A26776CRYSTAL04-16934-41 6-2