RCA-RP7954A-pr-sm 电路图 维修手册.pdf

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1、RP7954A FEB/99 RP7954A Audio/Communication Latin America After Sales Indianapolis IN 46290 U.S.A. SERVICE DATA INDEX USE ISOLATION TRANSFORMER WHEN SERVICING SAFETY NOTICE Components having special safety characteristics are identified by a ( ) on schematics and on the parts list in this Service Dat

2、a and its bulletins. Before servicing this instrument, it is important that the service technician read and follow the Safety Precautions in the Basic Service Data. RP7954A Basic Service Data First Edition - First Printing Copyright 1999 - Thomson Consumer Electronics, Inc. Printed in U.S.A. - Trade

3、mark(s) fi Registered - Marca(s) Registrada(s) Page Number Exploded View.1-6 Replacement Parts .1-3 Safety Precautions .1-2 Schematic .1-7 CAUTION: Modification or repair of this unit by unauthorized persons is a direct violation of FCC Rules Part 68.216 and could result in risk of electric shock. Y

4、ou 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, always make a safety check of the entire instrument, including, but not limited to, the following items: a. Be sure that

5、 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. Correctly replace all missing protective shields, including any removed for servicing convenience. (2) Whe

6、n 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/shields, and isolation resistor/capacitor networks. Do not operate this instrument or permit it to be

7、 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 expose themselves and others to possible injury. b. Be sure that there are no cabinet openings through w

8、hich 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) improperly fitted and/or incorrectly secured cabinet covers. c. Leakage Cold Check - With the instrumen

9、t 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 prongs tied together and touch the other ohmmeter lead in turn to each push button/customer control, exp

10、osed 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 the instrument is returned to the customer. Repeat this test with the AC switch in the off position. d

11、. 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 tester or a metering system that complies with American National Standards Institute (ANSI) C101.1 Leaka

12、ge 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 parts of the instrument (antenna connections, handle bracket, metal cabinet, screwheads, metallic overlays

13、, 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 instrument power cord plug in the outlet and repeat the test. ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED

14、 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 Leakage Test Avoid shock hazards. The instrument, accessory, or cable(s) to which this instrument is connec

15、ted 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 exhibits excessive leakage currents. 2. Read and comply with all caution and safety-related notes on or insi

16、de 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, including, but not limited to, circuit modifications and the addition of items such as auxiliary audio output

17、 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 warranty and will make you, the servicer responsible for personal injury or property damage resulting

18、 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 components do not touch thermally hot parts, and (c) the AC supply. Always inspect in all areas for pinched, ou

19、t-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 overheated or are otherwise damaged should be replaced with components, parts or wiring that meet original spe

20、cifications. 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 and mechanical parts have special safety-related characteristics, some of which are often not eviden

21、t 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 identified in this service data by a (|) on schematics and in the parts list. Use of a substitute replac

22、ement 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 review continuously and new instructions are issued whenever appropriate. For the latest information, al

23、ways consult the appropriate current service literature. 1-2 RadioFans.CN 收音机爱 好者资料库 RP7954A EXPLODED VIEW Page 1-6 RP7954A EXPLODED VIEW RadioFans.CN 收音机爱 好者资料库 BEFORE REPLACING PARTS, READ THE FOLLOWING: REPLACEMENT PARTS Warranty Status of Assemblies and Parts - All assemblies and components show

24、n 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 require

25、s 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 - Befor

26、e 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 adhe

27、re 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

28、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 imprope

29、r 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. 1 - 3 February 1999 PartsList Critical Safety Symbol Not Eligible For Warranty StockSymbolDescriptionDrawingSymbol

30、StockDescriptionDrawing RP-7954A CABINET & CHASSIS 16A29092LENS CASS DOOR A43-07954-01 26A29093LENS CASS DOOR B43-07954-02 39A29094COVER CASS DOOR A66-07954-00 49A29095COVER CASS DOOR B66-07954-01 56A29096LENS DISPLAY43-07954-00A 62A29097HOLDER GEAR CASS DOOR63-10001-01 72A29098GEAR DAMPER CASS DOOR

31、63-10001-02 898A29099CABINET FRONT60-07954-00A 943A29100KNOB REPEAT53-07954-03 1043A29101KNOB POWER53-07954-00 10273A29131MECHANISM CD TCM122.598-07936-01 10662A29132MECHANISM CASS CS-21SW- 628 94-21628-00 1143A29102KNOB CD FUN53-07954-06 1122A29133PLATE LOGO40-13008-01 1243A29103KNOB STOP53-07954-0

32、4 1343A29104KNOB SUPER BASS53-07954-05 1543A29105KNOB VOL51-07954-00 1643A29106KNOB TUNING51-07954-01 1943A29107KNOB BAND 253-07954-02 2043A29108KNOB BAND 153-07954-01 232A29109GEAR A47-00937-03 2743A29110BUTTON STOP/EJECT B53-07954-14 2843A29111BUTTON PLAY B53-07954-13 2943A29112BUTTON PAUSE A53-07

33、954-07 3043A29113BUTTON STOP/EJECT A53-07954-08 3143A29114BUTTON FFWD A53-07954-09 3243A29115BUTTON REW A53-07954-10 3343A29116BUTTON PLAY A53-07954-11 3443A29117BUTTON REC A53-07954-12 362A26916DISC55-07953-01 372A26914HOLDER DISC48-00920-00 3843A29118KNOB CD DOOR OPEN53-07954-15 396A29119LENS CD D

34、OOR43-07953-09 409A29120DOOR CD66-07953-06 422A26795HOLDER DAMPER GEAR63-00206-00 431A26921PIN CD DOOR EJECT55-07953-00 442A26794GEAR DAMPER63-00206-01 488A25151SOCKET AC POWER12-00004-09 4978A29121HANDLE57-07953-06 5098A29122CABINET REAR61-07953-20 519A29123DOOR BATTERY SMALL58-07953-07 529A29124DO

35、OR BATTERY58-07953-06 533A26958SPRING -74-01000-01A 542A26959CONTACT PLATE +74-00910-00 553A26960SPRING +/-74-01000-00A 5882A26956ANTENNA WHIP23-00910-00 6066A31143CORD POWER30-00029-02L 6188A29125TRANSFORMER POWER15-06610-00 6245A29126FOOT RUBBER81-07953-02 753A29127SPRING CASS DOOR36-07954-00 771A

36、26807GROMMET RUBBER BLK81-07635-08 822A29128MAGNET97-00255-02L 842A26918PLATE CLAMPER39-07953-03 853A29129SPRING CD KNOB EJECT36-07953-01A 873A29130SPRING CD BUTTON EJECT36-03310-02 893A26814SPRING CD DOOR36-07930-01 991A26806RUBBER CD81-07635-07 1 - 3 StockSymbolDescriptionDrawingSymbolStockDescrip

37、tionDrawing 1 - 4 REPLACEMENT PARTS (Continued) February 1999 ELECTRICAL COMPONENTS CF136A15191FILTER09-50107-20 D116A29139DIODE LED LT0311G-4102-30041-02G D10198589DIODE 1N414802-04148-00R D11198589DIODE 1N414802-04148-00R D12198589DIODE 1N414802-04148-00R D13198589DIODE 1N414802-04148-00R D1419858

38、9DIODE 1N414802-04148-00R D15198589DIODE 1N414802-04148-00R D16198589DIODE 1N414802-04148-00R D17198589DIODE 1N414802-04148-00R D18198589DIODE 1N414802-04148-00R D19198589DIODE 1N414802-04148-00R D2198589DIODE 1N414802-04148-00R D20198589DIODE 1N414802-04148-00R D21198589DIODE 1N414802-04148-00R D23

39、198589DIODE 1N414802-04148-00R D24198589DIODE 1N414802-04148-00R D25198589DIODE 1N414802-04148-00R D26198589DIODE 1N414802-04148-00R D29198589DIODE 1N414802-04148-00R D3198589DIODE 1N414802-04148-00R D30198589DIODE 1N414802-04148-00R D30816A29139DIODE LED02-30041-02G D31198589DIODE 1N414802-04148-00

40、R D32198589DIODE 1N414802-04148-00R D34198589DIODE 1N414802-04148-00R D35198589DIODE 1N414802-04148-00R D36198589DIODE 1N414802-04148-00R D37198589DIODE 1N414802-04148-00R D38198589DIODE 1N414802-04148-00R D4EA16X1078DIODE ZENER 9.1V 1/2W02-50091-00 D5EA16X1078DIODE ZENER 9.1V 1/2W02-50091-00 D50119

41、8597DIODE02-04001-00 D502198597DIODE02-04001-00 D503198597DIODE02-04001-00 D504198597DIODE02-04001-00 D6198589DIODE 1N414802-04148-00R D7198589DIODE 1N414802-04148-00R D8198589DIODE 1N414802-04148-00R D916A11218DIODE02-01043-00 FIL36A25176FILTER CERAMIC CCFA-45509-00455-01T FIL36A27314FILTER FM09-80

42、001-00T IC133A23328IC TA8227P03-08227-00 IC333A14317IC TA8189A03-08189-00 IC433A29140IC LA182803-01828-00 JAC41A26978JACK PHONES12-21235-15 LAB4A31110LABEL POPPOPRP7954 LCD30163A29145DISPLAY LCD91-07954-00 Q1015A29137TRANSISTOR 9014C01-09014-03A Q10115A26816TRANSISTOR 9013G01-09013-07 Q10215A26816TR

43、ANSISTOR 9013G01-09013-07 Q10315A20006TRANSISTOR 2SC3330U01-03330-21 Q10515A29137TRANSISTOR 9014C01-09014-03A Q10615A29137TRANSISTOR 9014C01-09014-03A Q10715A29137TRANSISTOR 9014C01-09014-03A Q10815A29137TRANSISTOR 9014C01-09014-03A Q1115A29137TRANSISTOR 9014C01-09014-03A Q1215A29137TRANSISTOR 9014C

44、01-09014-03A Q1315A15170TRANSISTOR01-09015-03 Q16315A26973TRANSISTOR 8050D01-08050-04S Q1715A20006TRANSISTOR 2SC3330U01-03330-21 Q1815A29134TRANSISTOR 2SA1317S01-01317-01 Q1915A20006TRANSISTOR 2SC3330U01-03330-21 Q2015A20006TRANSISTOR 2SC3330U01-03330-21 Q20115A26816TRANSISTOR 9013G01-09013-07 Q2021

45、5A26816TRANSISTOR 9013G01-09013-07 Q20315A20006TRANSISTOR 2SC3330U01-03330-21 Q20415A29137TRANSISTOR 9014C01-09014-03A Q20515A29137TRANSISTOR 9014C01-09014-03A Q20615A29137TRANSISTOR 9014C01-09014-03A Q20715A29137TRANSISTOR 9014C01-09014-03A Q20815A29137TRANSISTOR 9014C01-09014-03A Q2115A29137TRANSI

46、STOR 9014C01-09014-03A Q2515A29137TRANSISTOR 9014C01-09014-03A Q2615A29136TRANSISTOR 8550D01-08550-04S Q715A29135TRANSISTOR 2SC1383R01-01383-18 Q815A26815TRANSISTOR 2SD201201-02012-00 Q915A29137TRANSISTOR 9014C01-09014-03A SOC8A25151SOCKET AC POWER12-00004-09 SW139A29144SWITCH SLIDE16-10403-42 SW239

47、A29143SWITCH SLIDE16-10402-31 SW30139A26820SWITCH TACT16-10102-03S SW30239A26820SWITCH TACT16-10102-03S SW30339A26820SWITCH TACT16-10102-03S SW30439A26820SWITCH TACT16-10102-03S SW30539A26820SWITCH TACT16-10102-03S SW30639A26820SWITCH TACT16-10102-03S SW30739A26820SWITCH TACT16-10102-03S SW30839A268

48、20SWITCH TACT16-10102-03S SW30939A26820SWITCH TACT16-10102-03S SW31039A26820SWITCH TACT16-10102-03S SW31139A26820SWITCH TACT16-10102-03S SW31239A26820SWITCH TACT16-10102-03S SW31339A26820SWITCH TACT16-10102-03S SW31439A26820SWITCH TACT16-10102-03S SW31539A26820SWITCH TACT16-10102-03S SW31639A26820SWITCH TACT16-10102-03S SW31739A26820SWITCH TACT16-10102-03S SW31839A26820SWITCH TACT16-10102-03S SW31939A26820SWITCH T