RCA-RP7992A-pr-sm 电路图 维修手册.pdf

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1、RP7992A APRIL/01 RP7992A Audio/Communication LatinAmericaAfterSales Indianapolis, IN 46290 U.S.A. SERVICE DATA INDEX USE ISOLATION TRANSFORMER WHEN SERVICING SAFETY NOTICE Componentshavingspecialsafetycharacteristicsareidentifiedbya( )onschematicsandonthepartslistinthisServiceDataanditsbulletins. Be

2、fore servicing this instrument, it is important that the service technician read and follow the Safety Precautions in the Basic Service Data. RP7992A Basic Service Data FirstEdition-FirstPrinting Copyright 2001 - Thomson Multimedia, Inc. Printed in U.S.A. - Trademark(s)Registered - Marca(s) Registra

3、da(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 ExplodedViews .7-1 BlockDiagrams.8-1 SchematicDiagrams .9-1 Circuit Boards.10-1 CAUTION: Modificationorrep

4、airofthisunitbyunauthorizedpersonsisadirectviolationofFCCRulesPart68.216andcould result 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 PRECAUTIONS 1. Before returning the instrument to the customer, alwa

5、ys make a safety 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

6、customer. Correctly 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 comp

7、artment covers/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 dama

8、ge, and may expose 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 sl

9、ots, and (2) improperly 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

10、the AC plug prongs 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 cor

11、rected before 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 leak

12、age current tester 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 c

13、onductive parts 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. Revers

14、e the instrument 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 Equi

15、pment AC Leakage 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 accesso

16、ry that exhibits 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 addi

17、tions, including, 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

18、 manufacturers 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

19、 and components 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

20、 have overheated 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 -

21、Many electrical 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 characte

22、ristics are identified 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 Safe

23、ty is under review continuously and new instructions are issued whenever appropriate. For the latest information, always consult the appropriate current service literature. 1-2 RadioFans.CN 收音机爱 好者资料库 7-1 RP-7992A MECHANISM ASSEMBLY RadioFans.CN 收音机爱 好者资料库 7-2 RP-7992A MECHANISM ASSEMBLY BEFORE REPL

24、ACING 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 t

25、he 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.

26、 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 orderin

27、g 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 val

28、ue, 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 compo

29、nents, 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 sa

30、fety hazard. 6-1 January1999 PartsList Critical Safety Symbol Not Eligible For Warranty StockSymbolDescriptionDrawingSymbolStockDescriptionDrawing RP-7992A CABINET & CHASSIS 14A30975GRILLE SPEAKER R0102-41621-00 29A28860DOOR CASS0101-43364-00 36A28861LENS CASS DOOR0101-43358-00 42A28862HOLDER CASS01

31、01-43359-00 56A28863LENS DISPLAY0101-43357-00 698A28864CABINET FRONT0101-43342-00 73A28865SPRING CASS DOOR0102-41624-00 86A28866LENS DIAL0101-43356-00 1043A28867BUTTONS CD CONTROL L0101-43890-00 1014A28903PANEL CASS KEY INSERT0101-43346-00 1362A28868MECHANISM CASSETTE ASY0115-11100-1H 1443A28869KNOB

32、 CASS PAUSE0101-43691-00 1543A28870KNOB CASS STOP/EJECT0101-43692-00 1643A28871KNOB CASS FF0101-43693-00 1743A28872KNOB CASS REW0101-43694-00 1843A28873KNOB CASS PLAY0101-43695-00 1943A28874KNOB CASS OTR0101-43696-00 212A28875LEVER BAND/FUNCTION0101-43759-00 2243A28876KNOB SWITCH0101-43349-00 2343A2

33、8877KNOB D.BB0101-43351-00 2443A28878KNOB VOLUME0101-43350-00 312A28879PLATE CHUCKING0101-32546-01 322A28880PLATE CD CONTROL KNOB0101-43360-00 332A28881MAGNET RING0110-30577-00 342A28882PLATE CHUCKING0102-31274-00 359A28883DOOR CD0101-43344-00 363A28884SPRING CD DOOR0102-41623-00 3798A28885CABINET B

34、ACK0101-43343-00 3882A28886ANTENNA WHIP0114-06141-00 4078A28887HANDLE0101-43345-00 429A28888DOOR BATTERY0101-43355-00 4545A28889FOOT RUBBER CABINET BACK 0109-40346-00 5088A28890TRANSFORMER0326-74832-16A 562A28891GEAR CD DOOR0101-43490-00 5773A28892MECHANISM CD ASY0115-60105-0E 5860A28893INSULATOR RU

35、BBER BLUE0109-30270-00 6160A28894INSULATOR RUBBER BLK0109-30270-01 6543A28895KNOB TUNING0101-43352-00 662A28896GEAR PVC0101-43491-01 7343A28869KNOB CASS PAUSE0101-43691-00 7445A28897FOOT RUBBER CAB FRT0109-40364-00 772A28898HOLDER GEAR CASS DOOR0101-43489-00 782A28899GEAR CASS DOOR0101-43488-00 7989

36、A28900GRILLE SPEAKER L0102-41622-00 8095A28901SPEAKER0118-08077-18 942A28891GEAR CD DOOR0101-43490-00 982A28902CONTACT SPRING BATT0119-30284-00 CASSETTE MECHANISM 2339A28935SWITCH LEAF21-01-023A 352A28936ARM PINCH ROLLERA-04 392A28937ARM RF ASSYA-09 4229A28938BELT RFA-4001-0A 4462A28939FLYWHEEL ASYA

37、-10 512A28940GEAR REEL ASYA-06 525A28941GEAR TAKE-UPA-07 532A28942LEVER REC SAFETYA-3017-0 6-1 StockSymbolDescriptionDrawingSymbolStockDescriptionDrawing 6-2 REPLACEMENT PARTS (Continued) January1999 566A28943PULLEYA-3018-0 5929A28944BELT MAINA-4003-3A 622A28945LEVER EJECT SLIDEA-3019-0HV 6872A28946

38、MOTORM9T12U24-1 8662A28947HEAD R/PBS-09 ELECTRICAL COMPONENTS C6174A28934CAP CER 0.02UF +80-20% 50V0336-30002-50 C8054A28933CAP LYTC 2200MFD 20% 25V0335-42200-25 CF30336A28930FILTER CER0342-2455Y-00 COR66A28931CORD AC POWER0349-30005-10 D101EA16X0878DIODE 1N41480344-14148-01 D102EA16X0878DIODE 1N414

39、80344-14148-01 D103EA16X0878DIODE 1N41480344-14148-01 D301EA16X0878DIODE 1N41480344-14148-01 D302EA16X0878DIODE 1N41480344-14148-01 D30316A26092DIODE AFC0344-12638-01 D60116A28912DIODE 1N40040344-14004-08 D602EA16X0878DIODE 1N41480344-14148-01 D603EA16X0878DIODE 1N41480344-14148-01 D604EA16X0878DIOD

40、E 1N41480344-14148-01 D80116A28912DIODE 1N40040344-14004-08 D80216A28912DIODE 1N40040344-14004-08 D80316A28912DIODE 1N40040344-14004-08 D80416A28912DIODE 1N40040344-14004-08 DIO17A28914DIODE LED GREEN0346-20002-00 DIS63A28915DISPLAY LCD0347-40059-18 FIL36A26090FILTER CER 10.7MHZ0342-1107M-24 FIL36A2

41、8911FILTER CER0342-107MS-2M0 IC10133A28924IC KS57C0104-060330-10406-15 IC10233A26828IC KS9282B0330-92828-15 IC10333A28926IC KA9270D0330-92700-15 IC10433A28925IC KA9220C0330-9220C-15 IC10533A28923IC KA9258D0330-09258-015 IC30133A28908IC TA8164P0330-08164-01 IC302EA33X9010IC TA7343AP0330-7343A-01 IC50

42、133A28920IC BA3313L0330-3313L-17 IC50133A28919IC BA3312N0330-3312N-17 IC60133A28909IC KIA6269P0330-6269P-40 IC60233A28910IC NJM7808FA0330-7808F-44 MEC73A28932MECHANISM CD ASY0115-60115-00A PJ60141A28904JACK HEADPHONE0322-63511-01 Q10115A28833TRANSISTOR KSR10030329-01003-17 Q10215A28922TRANSISTOR SS9

43、012G0329-9012G-17 Q10315A28922TRANSISTOR SS9012G0329-9012G-17 Q60115A28907TRANSISTOR0329-3198G-22 Q60215A28907TRANSISTOR0329-3198G-22 SOC8A08928SOCKET AC0322-30021-11A SOC8A08928SOCKET AC0322-30021-11A SW30139A28906SWITCH SLIDE0323-20375-00 SW60139A28905SWITCH SLIDE0323-20294-00 SWI39A28918SWITCH RE

44、C0324-90088-04 SWI39A28918SWITCH REC0324-90088-04 SWI39A28921SWITCH QUIT ACTION0323-60208-03 SWI39A28916SWITCH PUSH0324-20085-13 SWI39A28913SWITCH TACT0324-10054-04 TRA88A28929TRANSFORMER POWER0326-14141-241 VR40149A28917RES CONTROL0325-10207-25 X10141A28927RESONATOR CER 16.93MHZ0363-1693M-01 MISCELLANEOUS LAB77A28948LABEL POPPOPRP7992 USEUCRP7992USE & CARE GUIDEUCRP7992 6-2