Thomson-3_5027-cs-sch 电路图 维修手册.pdf

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1、? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?!?#?$?% ? ?#?$? ? ?# ? ? ? ? ? ? ? ? ? ?!?!? ?# ? ? ?!#$%!? ?&?&#?(?)?# ? ? 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 foll

2、owing 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. Correctly replace all missing protective shields, including any removed for s

3、ervicing 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/shields, and isolation resistor/capacitor networks. Do not operate this

4、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 expose themselves and others to possible injury. b. Be sure that there are

5、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) improperly fitted and/or incorrectly secured cabinet covers. c. Leakage Co

6、ld 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 prongs tied together and touch the other ohmmeter lead in turn to each push

7、 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 the instrument is returned to the customer. Repeat this test with the AC

8、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 tester or a metering system that complies with American National Standards

9、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 parts of the instrument (antenna connections, handle bracket, metal cabinet,

10、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 instrument power cord plug in the outlet and repeat the test. ANY MEASUREMENTS NO

11、T 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 Leakage Test Avoid shock hazards. The instrument, accessory, or cable(s) to wh

12、ich 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 exhibits excessive leakage currents. 2. Read and comply with all caution and sa

13、fety-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, including, but not limited to, circuit modifications and the addition of items s

14、uch 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 warranty and will make you, the servicer responsible for personal injury

15、 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 components do not touch thermally hot parts, and (c) the AC supply. Always inspect

16、 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 overheated or are otherwise damaged should be replaced with components, parts or w

17、iring 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 and mechanical parts have special safety-related characteristics, some o

18、f 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 identified in this service data by a ( ! ) on schematics and in the parts li

19、st. 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 review continuously and new instructions are issued whenever appropriate.

20、For the latest information, always consult the appropriate current service literature. 1-2 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 shown in this part list are eligible for warranty e

21、xchange 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 Electronic

22、s 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

23、 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

24、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: Compone

25、nts 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

26、 not be marked with a critical safety symbol , replacement of assemblies with other assemblies not approved may result in a safety hazard. 1 - 3 December1999 35027 Critical Safety Symbol Not Eligible For Warranty StockSymbolDescriptionDrawingSymbolStockDescriptionDrawing 3-5027 CABINET ASY ADA51075A

27、DAPTER AC 5-1075D14750250000 BEL1A34849BELT RUBBER22231033000 CAB98A34856CABINET BOTTOM502100100GE01 CAB98A34855CABINET TOP501100100GE01 COU73A34848COUNTER (MODEL NO. M3A 130-120 22101000000 DEC73A34847DECK HY-9ZR-220-122010010100 DOO9A34857DOOR CASSETTE521100100GE01 DOO9A34858DOOR BATTERY522100100G

28、E01 FOO45A34850FOOT RUBBER36012652000 HAN78A34862HANDLE551100100GE01 KNO43A34860KNOB CASSETTE540003101GE01 KNO43A34861KNOB ADAPTERS CASS540100100GE01 LEN6A34859LENS DOOR CASS530100100GE01 MIC62A34846MICROPHONE16010620300 SPE95A34845SPEAKER 2 1/4 8 OHM15522530511 SPR3A34853SPRING CONTACT +73000110050

29、 SPR3A34851SPRING CONTACT +/-73000110030 SPR3A34852SPRING CONTACT -73000110040 SPR3A34854SPRING DOOR CASS73000410010 ELECTRICAL COMPONENTS D116A20346DIODE 1N581711702581700 D216A34871DIODE 1N60117001N6000 IC133A34869IC AN665010500665000 IC133A34870IC UTC711210500711201 JAC8A34867JACK PHONE MONO REMO

30、TE16503000400 JAC8A34865JACK DC16501300300 JAC41A26186JACK STEREO PHONE16502500100 JAC8A34866JACK PHONE MONO16503000300 Q1186645TRANSISTOR 2SC945P11001094557 Q2186645TRANSISTOR 2SC945P11001094557 SWI39A34868SWITCH PUSH17003040205 VR142A34863RESISTOR VAR VOLUME12523100200 VR242A34864RESISTOR VAR12621

31、500201 MISCELLANEOUS LAB4A34827LABEL POPPOP35027 USEUC35027USE & CARE GUIDEUC35027 3-5027ATC CABINET ASY ADA51075ADAPTER AC 5-1075D14750250000 BEL1A34849BELT RUBBER22231033000 CAB98A34856CABINET BOTTOM502100100GE01 CAB98A34855CABINET TOP501100100GE01 COU73A34848COUNTER (MODEL NO. M3A 130-120 2210100

32、0000 DEC73A34847DECK HY-9ZR-220-122010010100 DOO9A34858DOOR BATTERY522100100GE01 DOO9A34857DOOR CASSETTE521100100GE01 FOO45A34850FOOT RUBBER36012652000 HAN78A34862HANDLE551100100GE01 KNO43A34860KNOB CASSETTE540003101GE01 KNO43A34861KNOB ADAPTERS CASS540100100GE01 LEN6A34859LENS DOOR CASS530100100GE0

33、1 MIC62A34846MICROPHONE16010620300 SPE95A34845SPEAKER 2 1/4 8 OHM15522530511 SPR3A34851SPRING CONTACT +/-73000110030 1 - 3 RadioFans.CN 收音机爱 好者资料库 StockSymbolDescriptionDrawingSymbolStockDescriptionDrawing 1 - 4 REPLACEMENT PARTS (Continued) December1999 SPR3A34854SPRING DOOR CASS73000410010 SPR3A34

34、852SPRING CONTACT -73000110040 SPR3A34853SPRING CONTACT +73000110050 ELECTRICAL COMPONENTS D116A20346DIODE 1N581711702581700 D216A34871DIODE 1N60117001N6000 IC133A34870IC UTC711210500711201 IC133A34869IC AN665010500665000 JAC8A34867JACK PHONE MONO REMOTE16503000400 JAC8A34865JACK DC16501300300 JAC41

35、A26186JACK STEREO PHONE16502500100 JAC8A34866JACK PHONE MONO16503000300 Q1186645TRANSISTOR 2SC945P11001094557 Q2186645TRANSISTOR 2SC945P11001094557 SWI39A34868SWITCH PUSH17003040205 VR142A34863RESISTOR VAR VOLUME12523100200 VR242A34864RESISTOR VAR12621500201 MISCELLANEOUS LAB4A34827LABEL POPPOP35027 USEUC35027USE & CARE GUIDEUC35027 1 - 4 ? ? ? ? ? ? ? ? ? ?