Jvc-AXF-1-GD-Service-Manual 电路图 维修手册.pdf

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1、JVE AX.FlGD Contents Sofety Precoutions Instruction Booh Description of Major ICs Disas s sembly Proce dure s 1-2 1-3 1-11 1-14 Area Suffix BS . . the U.K. EF . Continental Europe Except Germany and ltaly EN. NordicCountris G . Germany Gl ltaly US . Singapore UT . Taiwan UB . Hong Kong U . . . Other

2、 Area Adjustment Procedures . . 1-16 Bloch Diagroms 1-17 Schematic Di.ogroms Insertion Printed. Circuit Boords Inseftion Parts List Seporate-uolume Insertion No.2O548 Sep.1995 RadioFans.CN 收音机爱 好者资料库 AX-FIGD Safety Precautions 1. The design of this product contains special hardware and many circuits

3、 and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be performed by qualified persorlnel

4、 only. 2. Alterations of the design or circuitry of the product should not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for perconal injury or pro

5、perty damage resulting therefrom. 3. Many electrical and mechanical parts in the products have special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components ra

6、ted for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features are identified by shading on the schematics and by (A) on the Parts List in the Service Manual. The u

7、se of a substitute repalcement which does not have the same safety characteristics as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or other hazards. 4. The leads in the products are routed and dressed with ties, clamps, tubings, barrierc and the

8、 like to be separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, af

9、ter re-assembling. 5. Leakage currnet check (Electrical shock hazard testing) After re-assembling the product, always perform an isolation check on the exposed metal parts of the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, contorl shafts, etc.) to be sure the produ

10、ct is safe to operate without danger of electrical shock. Do not use a line isolation transformer during this check. o Plug the AC line cord directly into the AC outlet. Using a Leakage Current Tester, measure the leakage current from each exposed metal parts of the cabinet, particularly any exposed

11、 metal part having a return path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.). o Alternate check method Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, I,OOO ohms per volt or more sensitivity in the following manne

12、r. Connect a 1,500Q 10 W resistor paralleled by a 0.15 pF AC-type capacitor between an exposed metal part and a known good earth ground. Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part havi

13、ng a return path to the chassis, and meausre the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Any voltage measured must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). AC VOLTMETER (Having 1000 ohms/volts, or more sensitiv

14、ity.) 1s000 10w Place this probe on each exposed metal part. Good earth ground lspF AC TY 1. This equipment has been designed and manufactured to meet international safety standards. 2. lt is the legal responsibility of the repairer to ensure that these safety standards are maintained. 3. Repairs mu

15、st be made in accordance with the relevant safety standards. 4. lt is essential that safety critical components are replaced by approved parts. 5. lf mains voltage selector is provided, check setting for local voltage. 1-2 Warning RadioFans.CN 收音机爱 好者资料库 N(-FlGD 7 Description of lCs I MN171ZO2JGL(lC

16、s01) : SYSTEM CONTROLLER 1. Terminal Layout VDD CD IND TUNER IND TAPE IND MDIND PHONO IND AUXIND POWER ON IND VOTUME IND DIRECTIND SOUND IND osc tN oscour GNO POWERON SPK.RELAY MUTE DIRECTON/OFF SOUND ON/OFF VOL. DOWN VOL UP H.P.IN PROTECT-IN INH RM.IN RESET DATA SIB SCLK SOURCE 5EL-2 SOURCE SEL-1 S

17、OUND KEY IN T v v DCSIN DCS.OUT DIRECT KEY IN POWER KEYIN 2. Functions u 63 62 6l 60 s9 58 s7 56 55 54 s3 52 51 50 49 48 47 46 45 4 43 42 41 /O 39 38 37 36 35 34 33 1 2 3 4 5 5 7 8 9 10 1 1 l2 13 t4 l 5 16 17 18 r9 20 21 22 23 24 25 26 27 28 29 30 31 32 Pin No. Symbolr/oFunction Pin NO. Symbolt/oFun

18、ction 1VDDPower supply33SOUND KEY INSOUND key input 2CD INDoCD indicator control34Connect to GND 3TUNER INDoTUNER indicatorcontrol3sConnect to GND 4TAPE INDoTAPE indicator control36Connect to GND 5MD INDoMD indicator control37SOURCE SEL-IISource select control 6PHONO INDoPHONO indicator control38SOU

19、RCE SEL-zISource select control 7AUX INDoAUX indicator control39Connect to GND 8PCWER OI INDoPOWER ON indicator control40SCLKoClock output for 1C201 9VOLUME INDoVOLUME indicator control41STBoStrobe siqnal for 1C201 10DIRECT INDoCD DIRECT indicator control42DATAoData for 1C201 11SOUND INDoSOUND indic

20、ator control43RESETIReset siqnal input 12Pull upMRM.INIRemote control siqnal input 13Pull up45INHIInhibit siqnal input 14Pull up46PROTECT-INIDetection for protector 15Pull up47Connect to GND 16Pull up48Connect to GND 17Pull up49Connect to GND 18GNDGND50Connect to GND 19Pull up51H.P.INIHeadphone in s

21、iqnal input 20Pull up52VOL. UPoVolume control siqnal 21Pull ups3VOL. DOWNoVolume control siqnal 22Pull up54SOUND ON/OFFoPresence control siqnal 23Pull up55DIRECTON/OFFoCD direct control siqnal 24Pull ups6MUTEoSource mute control siqnal 25Pull up57SPK.RELAYoSpeaker relav control siqnal 26Pull up58POW

22、ER ONoRequlator control siqnal 27DCS-|NICompulink signal input59Connect to GND 28DCS-OUToCompulink siqnal output60Connect to GND 29Pull up61Not used 30Pull up62GNDGND 31DIRECT KEY INICD DIRECT key input63osc ouroClock oscilator output 32POWER KEY INIPOWER key inputuosc rNIClock oscilator input Radio

23、Fans.CN 收音机爱 好者资料库 Limiter A)(-FlGD t GPlU501X(1C502) : Receiver for remote controller I 181639-CV(1C351) : Motor Driver 1. Terminal Layout tNl GND Vcont tN2 3. Functions OUT 1 Vcc NC OUT2 2. Block Diagram tNl - l -J cc f f s 1-12 tNlrN2OUT 1OUT 2 MOTOR HLHLcLocKwtsE LHLHCOUNTER.CLOCKWISE HHOFFOFFWA

24、ITING LLOFFOFFWAITING N(-FlGD I VCs022-2(tC7s1) : SUPER 1. Terminal Layout 1 2 3 4 5 6 7 8 9 Thermal Compensation VC4580DD (lCl 01,231,361,301) : Dual OP amp. NJM4558 (1C352,363) : Dual OP amp. Block Diagram r- Super-A ! 2. v Thermal Compensation 7 F A OUT A _IN A +IN -vcc +Vcc B OUT B -IN B +IN v 1

25、-13 AX.FIGD Disass embly Proced u res (1) Removing the top cover t. Remove 2 screws fastening both sides of top cover, and 4 screws fastening the rear side. 2. Remove the top cover. f xz x4 (2) Removing the Front Panel Assembly 1. Remove the top cover. 2. Disconnect the connector PA360. 3. Pull out

26、the Master volume knob, Tleble knob, Bass knob and Balance knob. 4. Remove the nut fastening the Master volume, Bass and Balance. 5. Disconnect the connectors (PA790,P202,P203,BC500) 6. Remove 3 screws and 3 hook O fastening bottom of the front panel assembly. % Mastervolume konb Bass, Treble *:-78

27、i - tct = f n 1 l tlt ( uJ lO rE U * aE ug Hff; - r t L N 9eg -t 3;Hi *Ei 5P F r.fr l U aB z 6 r3 - l = u F - + F | n r f ( r . l 3=ff - at1 o 9 57 v2* xSEn co- gaa a BSt s sEi REg J O sf Or I Ctt q 5e F CT ( J ) lri ; 68 ro pag$ - N fRK frqq *;fi ;DD , frF Hl 5R o (n lu lft L r ! ! m c.ts t = f i 9A o uF- d n o 3EA r./r H c t L! 3 o o- eEiF d G t 1-17 a AX.FIGD JVE VICTOR COMPANY OF JAPAN, LIMITED AUDIO DIVISION, YAMATO PLANT, 1644, SHIMOTSURUMA, YAMATO. SHI , KANAGAWA. KEN , 242, JAPAN Printed in Japan 9509(S) (No.20548)