RCA-RP7930A-pr-sm 维修电路原理图.pdf

?Latin America After Sales Indianapolis IN 46290 U.S.A.? ? ? ?!?#?$?% ? ?#?$? ? ?#? ? ?!? ?#?$?!?%?&?$? ? ?(?)?*?&?+(?*,?*,?*$?*%?-? ?.%?.,?/?)?0? ? )? ?.? ? ?!#$%!?&?&#?(?)?#RadioFans.CN 收音机爱 好者资料库SAFETY 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.1-2RadioFans.CN 收音机爱 好者资料库? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?BEFORE 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.1 - 3March2000RP7930ACritical Safety SymbolNot Eligible For WarrantyStockSymbolDescriptionDrawingSymbolStockDescriptionDrawingRP-7930ACABINET & CHASSIS ASY16A26787LENS CASS DOOR43-07930-0229A26788DOOR CASS66-07930-0233A26789SPRING CASS DOOR36-07930-0046A26790LENS DISPLAY43-07941-01589A26791GRILLE SPEAKER R41-07930-01645A26792FOOT RUBBER81-00088-00H798A26793CABINET FRONT60-07930-011443A33830KNOB CD R53-07930-051543A33831KNOB CD L53-07930-041789A26799GRILLE SPEAKER L41-07930-001843A25141KNOB TUNING51-00088-003443A30712BUTTON, CASSETTE COMM53-07930-01392A33832BATTERY TERMINAL74-13244-0024298A26800CABINET BACK61-07930-014638A25143TERMINAL BATTERY74-13244-01A4843A26802KNOB SLIDE52-00088-00509A30713COVER, HANDLE57-07930-025178A26803HANDLE W/COVER57-07930-015643A25150KNOB ROTARY51-00088-02662A33833PLATE CLAMPER39-00414-16W672A25164HOLDER CLAMPER55-00141-01682A33834CLAMPER55-00414-00729A26811DOOR CD66-07930-017343A25160BUTTON EJECT53-00088-03783A26814SPRING CD DOOR36-07930-01COR66A21431CORD AD30-00030-00GELECTRICAL COMPONENTSANT82A33841ANTENNA WHIP23-07930-00BAR82A33837ANTENNA BAR AM21-10080-00TCD 73A33843CD PICK UP TCP-110P98-00088-00D10116A31623SILICON DIODE02-04148-00D10216A31623SILICON DIODE02-04148-00D10316A11218DIODE02-01043-00D10417A25173DIODE LED K-504HL02-50000-02TD201198597DIODE02-04001-00D202198597DIODE02-04001-00D203198597DIODE02-04001-00D20416A14915DIODE ZENER 6.8V 1/2W02-50068-00D20516A31623SILICON DIOD02-04148-00D20716A24329DIODE 7.5V 1/2W02-50075-00D20816A31623SILICON DIOD02-04148-00D80116A31623SILICON DIOD02-04148-00D80216A31623SILICON DIOD02-04148-00D80716A31623SILICON DIOD02-04148-00D80816A31623SILICON DIOD02-04148-00D81016A31623SILICON DIOD02-04148-00IC101EA33X9422IC03-07205-00IC10233A25174IC AN702403-07024-00IC201EA33X9424IC03-07312-00IC20233A31745IC TA7769P03-07769-00IC80133A26826IC KA9220B03-09220-01IC80233A26828IC KS9282B03-09282-00IC80333A26827IC KA927003-09270-00IC80433A26829IC KS57C0104-1203-57010-43IC80533A26775IC KA9258D03-09258-00J2018A33842JACK STEREO HDPH12-00035-31LCD163A26831DISPLAY LCD91-00088-03MEC73A33835MECHANISM CD ASY00-00231-011 - 3StockSymbolDescriptionDrawingSymbolStockDescriptionDrawing1 - 4REPLACEMENT PARTS(Continued)March2000Q20115A26816TRANSISTOR 9013G01-09013-07Q20215A11215TRANSISTOR01-09014-03Q20315A26816TRANSISTOR 9013G01-09013-07Q20415A11215TRANSISTOR01-09014-03Q20515A11215TRANSISTOR01-09014-03Q20615A26815TRANSISTOR 2SD201201-02012-00Q20715A15170TRANSISTOR01-09015-03Q20815A11215TRANSISTOR01-09014-03Q20915A11215TRANSISTOR01-09014-03Q80115A10368TRANSISTOR KSA928AY01-00928-00Q80215A12584TRANSISTOR DTC124ES01-00124-05Q80315A25193TRANSISTOR 2SA131701-01317-00SOC8A25151SOCKET AC POWER12-00004-09SPE95A30705SPEAKER, 3 1/2W 80R 3W14-03508-34OSW139A26820SWITCH TACT16-10102-03SSW10139A26770SWITCH SLIDE 2P2T16-10202-44LSW239A26820SWITCH TACT16-10102-03SSW20139A25182SWITCH PUSH16-10902-02LSW20239A25187SWITCH PUSH16-10202-15LSW20339A33839SWITCH16-10603-09LSW20439A25184SWITCH SLIDE16-10203-58LSW339A26820SWITCH TACT16-10102-03SSW439A26820SWITCH TACT16-10102-03SSW539A26820SWITCH TACT16-10102-03SSW639A26820SWITCH TACT16-10102-03SSWI39A25181SWITCH MICRO16-10101-07HTRA88A33838TRANSFORMER POWER15-00088-05VR10142A33836RESISTOR VAR17-31103-08VR20149A25186RES CONTOL 50K18-51503-09VR20242A33840RESISTOR VAR17-31501-08X80141A26776CRYSTAL 16.9344MHZ04-16934-41MISCELLANEOUSLAB4A30813LABEL POPPOPRP7930USEUCRP7930USE & CARE GUIDEUCRP79301 - 4? ? ? ? ? ?