RCA-RP1224A-pr-sm 维修电路原理图.pdf

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1、?Latin America After Sales Indianapolis IN 46290 U.S.A. ? ? ? ?!?#?$?% ? ?#?$? ? ?#? ? ? ?!?#?$?%? ?&?(? ?)*? ?+? ? ?!#$%!?&?&#?(?)?#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 notlimi

2、ted 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 re

3、moved 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

4、 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

5、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 Ch

6、eck - 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/cu

7、stomer 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 o

8、ff 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

9、.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 overl

10、ays, 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 HE

11、REIN 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

12、 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 instrumen

13、t 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

14、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 ori

15、ginal 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.

16、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

17、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 prot

18、ectionthey 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 char

19、acteristics 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 liter

20、ature.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.

21、 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 componen

22、ts 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 minim

23、ize 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,

24、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

25、. 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 assem

26、blies not approved may result in a safety hazard.1 - 3December1999RP1224ACritical Safety SymbolNot Eligible For WarrantyStockSymbolDescriptionDrawingSymbolStockDescriptionDrawingRP-1224CABINET ASY198A33848CABINET TOP BOTTOM401-22080003-0863A33857DISPLAY LCD137-30081123-91798A33849CABINET TOP FRONT40

27、1-22080001-0196A33855LENS DIAL408-30220821-22198A33849CABINET TOP FRONT401-22080001-0222A33860SHAFT DOOR204-20232305-12395A33856SPEAKER 8 OHM .5W163-40000895-92443A33853KNOB FUNCTION401-22088013-02543A33854BUTTON SNOOZE/LIGHT401-22080014-02643A33852KNOB BAND401-22080011-03143A33851KNOB TUNING401-220

28、80010-0352A33859CONTACT SPRING BATTERY -202-22080003-4362A33858CONTACT SPRING BATTERY +202-22080001-44098A33848CABINET TOP BOTTOM401-22080003-0449A33850DOOR BATTERY401-22080005-0472A33977ANTENNA DRUM401-22980006-1ELECTROCAL COMPONENTSD116A30936DIODE 1N4148102-81441480-8D216A30936DIODE 1N4148102-8144

29、1480-8D316A30936DIODE 1N4148102-81441480-8D416A25172DIODE FV1043102-95510430-3IC133A33863IC TMP0290F104-93602906-0IC233A33862IC TA8122AF104-18122160-0IC333A33861IC KA2209104-11220900-0JACK18A33871JACK DC138-40071800-9JACK28A33872JACK PHONE138-59735301-6Q115A33865TRANSISTOR S9014C103-90143000-0Q215A3

30、3864TRANSISTOR C9012H103-90128000-0Q315A33866TEANSISTOR S9015C103-90153000-0Q415A33867TRANSISTOR 8050D103-80504000-0Q515A33865TRANSISTOR S9014C103-90143000-0Q615A33866TEANSISTOR S9015C103-90153000-0Q715A33865TRANSISTOR S9014C103-90143000-0Q815A33866TEANSISTOR S9015C103-90153000-0SW139A33875SWITCH SL

31、IDE132-99234017-1SW239A33874SWITCH SLIDE132-99224027-1T161A33870TRANSFORMER164-55107690-0T261A33869TRANSFORMER IFT YELLOW107-39602031-2T361A33868TRANSFORMER IFT RED107-49601872-2VR142A33873RESISTOR VAR VOLUME133-11241503-3X175A33876CRYSTAL 32.768KHZ139-13297680-4MISCELLANEOUSBAT41A27288BATTERY LITHIUM CR 2025162-38202500-0LAB4A33976LABEL, POPPOPRP1224USEUCRP1224USE & CARE GUIDEUCRP12241 - 3? ? ?