JVC-AXR551BK-int-sm维修电路原理图.pdf

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1、AX R551 BK JVC MODEL No. AX-R551BK / , oM: AX 8TMOINTUlRATED - -._. ,: l:g 0 - - - ; I= DJ - _ I _ -= :=.-=t:C-:.?J:-=-= r-_ =sir - e 0 -1 1-1 1:1 .D . O. d _. -. - :-,1 0 D 0 00 D - _0. C 0 -.- 0 0 0 0_ Cl 0 0 - - Contents Page Safety Preca utions . 12 Specification s,. 1-3 Instruction Book . 1-4 R

2、emoval Procedures. 130 Adjustment Procedures . 1-31 Explanation of LSI . 1-32 - - iage Internal Block Diagramms of IC . 1-33 Schematic Diagrams . Insertion Remote Control Unit. Insertion Block Diagram . Insertion Connection Diagram . Insertion Parts List. Separate Volume Insertion No. 20016 Feb, 19S

3、 8 RadioFans.CN 收音机爱 好者资料库 AX-R551BK -Safety Precautions-, 1. The design of this product contains special hardware and may circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacture

4、r. Replacement parts must be identical to those used in the original circuits. Service should be per- formed by qualified personnel 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 a

5、dditions will void the manufacturers warranty and will further relieve the manufacturer of responsibility for personal injury or property damage resulting therefrom. 3. Many electrical and mechanical parts in the product have special safety-related characteristics. These characteristics are often no

6、t evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Service Manual. Electrical co

7、mponents having such features are identified by shading on the schematics and by (Ll,) on the Parts List in the Service Manual. The use of a sub- stitute replacement which does not have the same safety characteristics as the recommended replacement part shown in the Parts List of Service Manual may

8、create shock, fire, or other hazards. 4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the 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 r

9、equired, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after re-assembling. 5. Leakage current check (Electrical shock hazard testing) After re-assembling the product, always perform an isolation check on the exposed metal

10、parts of the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock. Do not use a line isolation transformer during this check. Plug the AC line cord directly into the AC outlet

11、. Using a Leakage Current Tester, measure the leakage current from each exposed metal part of the cabinet, particularly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5 mA AC (r.m.s.) . Alternate check method Plug the A

12、C line cord directly into the AC outlet. Use an AC voltmeter having 1,000 ohms per volt or more sensi- tivity in the following manner. Connect a 1,500 n 10 W resistor paralleled by a 0.15 I1F AC-type capacitor be- tween an exposed metal part and a known good earth ground. Measure the AC voltage acro

13、ss the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure the AC volt- age across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Any voltage m

14、easured must not exceed 0.75 VAC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). f9 AC VOLTMETER ETI (Having 1000 ohms/volt, or more sensitivity. I ,-t-o o-r- 0.15,.F AC TYPE 1 1 150011 IOW Good earth ground Place tis probe on each exposed metal ptr1:_ VVarning- 1. This equipment has been designed

15、 and manufactured to meet international safety standards. 2. It is the legal responsibility of the repairer to ensure that these safety standards are maintained. 3. Repairs must be made in accordance with the relevant safety standards. 4. It is essential that safety critical components are replaced

16、by approved parts. 5. If mains voltage selector is provided, check setting for local voltage. 1-2 (No. 20016) RadioFans.CN 收音机爱 好者资料库 5 pecifications Output For Other areas: 100 watts per channel, min. RMS, both channels driven, into 8 ohms from 20 Hz to 20 kHz, with no more than 0.03% total harmoni

17、c distortion. 100 watts per channel, min. RMS, both channels driven, into 8 ohms at 1 kHz with no more than 0.007% total harmonic d istor- tion. For Europe, Australia, Germany and U.K.: 85 watts per channel into 8 ohms at 1 kHz (DIN). 75 watts per channel, min. RMS, both chan- nels driven, into 8 oh

18、ms from 20 Hz to 20 kHz, with no more than 0.007% total har- monic distortion. 80 watts per channel, min. RMS, both chan- nels driven, into 8 ohms at 1 kHz with no more than 0.003% total harmonic distor- tion. (measured by JVC Audio Analyzer System) Total harmonic : 0.03% (20 Hz - distortion 20 kHz,

19、 8 ohms) at 100 watts (For other area) 0.007% (20 Hz- 20 kHz, 8 ohms) at 75 watts (For Europe, Australia, Germany and U. K.) Power band width : 10 Hz -30 kHz (66 IHF 0.2%, 8 ohms, both channels driven) (For other area) 7 Hz -60 kHz (66 IHF 0.05%, 8 ohms, both channels driven) (For Europe, Australia,

20、 Germany and U.K.) Frequency response 10Hz -50 k Hz, +0.5, -3 dB (8 ohms) (For other areas) 6 Hz - 70 kHz, +0.5, -3 dB (8 ohms) (For Europe, Australia, Germany and U. K.) POWER SPECIFICATIONS Input terminals Input sensit ivity / impedance (1 k Hz) PHONO : 2.5 mV/47 kohms : 200 mV/35 kohms TUNER, CD,

21、 TAPE 1, VCR, TV, TAPE 2 MONITOR Signal-to-noise ratio PHONO TUNER, CD, TAPE 1, VCR TV, TAPE 2 MONITOR : 70 dB (66 IHF) 78dB (78 IHF, Rec Out) 67 dB (DIN) : 97 dB (66 IHF) 74dB (78IHF, Speaker Out) 68 dB (DIN) S.E.A. graphic equalizer Center frequencies: 63 Hz, 160 Hz, 400 Hz, 1 kHz, 2.5 kHz, Contro

22、 I range Loud ness controls (Volume control at -30 dB position) PH ONO RIAA deviation Record ing output 6.3 kHz, 16 kHz : +12dB 1 dB, -12dBldB : +4dB (at 100 Hz) +4dB (at 10 kHz) : 0.5 dB (20 Hz -20 kHz) Output level/impedance TAPE REC-l, 2 : 200 mV/l.8 kohms VCR REC GENERAL Power source Dimensions

23、Weight Refer to the table on back page. : 435 (W) x 117 (H) x 345 (D) mm 17 -3/16 x 4-5/8 x 13-5/8) : 9 kg (19.8 Ibs) Design and specifications subject to change without notice. Areas Line Voltage ) SEA LEVEL (RM-SA551 only) These two keys are used to adjust the level of the frequency band selected

24、using the SEA graphic equalizer band select keys (see SEA above) Cl) VIDEO 2/VIDEO 3 These buttons correspond to the external INPUT terminals on the TV set labeled VIDEO 2 or VIDEO 3. To watch the video equipment connected to these two pairs of terminals, press one of these two buttons so that the i

25、n- put signal from the TV terminals can be selected easily fP) PRESET CHANNEL FM/AM/TV/VCR: When the FM, AM, TV, or VCR/ VIDEO 1 button has been pressed, a preset statlon or TV channel can be selected by using these buttons to se- quentially scan the available stations or channels in either directio

26、n. 1-12 (No_ 20016) -15 - SEA (RM-SA551 seulement): Lorsque la touche CON- TROL SEA 0 a ete pressee, certaines de ces touches peuvent etre utilisees pour selectionner la gamme de Iegali- seur graph ique El regler. Televiseur (TV) ou magnetoscope (VCR): Lorsque la touche TV (VCR/VIDEO 1) a ete presse

27、e, ces touches peuvent etre utilisees pour selectionner les canaux de televiseurs (canaux de televiseur du magnetoscope) Syntoniseur, disque compact ou magnetophone audio- numerique (TUNER/CD/ OAT): Lorsque les dix touches (10 KEY) ont ete pressees, utiliser cette touche pour assigner les numeros de

28、 canal ou de piste (1 - 10) pour un disque qui est lu ou programme. Pour assigner un numero de piste superieur El 10, utiliser une combinaison de la touche 1+101 avec une touche numerlque. (Exemples) 5 Appuyer sur la touche numerlque 10 Appuyer sur la touche numerlque ITQ . 17 Appuyer sur la touche

29、1+101 une fois et sur la touche numerique LZLEJ 20 Appuyer sur la touche 1+101 une fois et sur la touche numerique IQ (Si le corps principal du syntoniseur est equipe de la touche QJ en denhors de celle de +IQ, il est possible dappuyer sur les touches 8Q , 0Q ,2 ) 25 Appuyer sur la touche 1+10 I une

30、 fois et sur la touche numeriqueW Remarques: Avec certains syntoniseur, lecteurs de disques compacts ou certaines platines a cassettes, seulement les dix touches (10 KEY) peuvent etre utilisees pour regler les numeros de piste, Lorsque des numeros dun chiffre unique sont entres, appuyer sur le numer

31、o, commej et attendre pendant 3 secondes. Pour les numeros de deux chiffres, comme 13, appuyer sur rn, puis sur rn. Pour les details, se reporter au manuel dinstructions pour syntoniseur, televiseur, magnetoscope, disqu es compacts et magnetophone audionumerique. (l) Commande de niveau SEA (SEA LEVE

32、L) (RM-SA551 seulement) Ces deux touches sont utilisees pour regler le niveau de gamme de frequence selectionnee en utilisant les touches de selection de gamme de Iegaliseur graphique (voir SE ci-dessus) o VIDEO 2/VIDEO 3 Ces touches correspondent aux bornes INPUT externes sur le televiseur identifi

33、ees VIDEO 2 ou VIDEO 3. Pour regarder Iappareil video raccorde El ces deux paires de bornes, appuyer sur Iune de ces deux touches pour que le signal dentree El partir des bornes TV puisse etre facilement selection ne. Canal preregle (PRESET CHANNEL) FM/AM/TV/VCR: Ouand la touche FM, AM, TV, DU VCR/V

34、IDEO 1 a ete pressee, une station prereglee ou ,.)n canal TV peut etre selectionne en utilisant ces touches en balayant sequentiellement les stations ou les canaux cis- ponibles dans nimporte quelle direction. 4J) PHONO IRM-SA551 only) PHONO I El): Press this button to start playing a record on the

35、turntable. STOP lOO): Press this button to stop playing a record. IRM-SA441 only) PHONO ID): Press this button sets the sourse selector. CD CD IEJ): Press this button to start playing a compact d ise. STOP lOO): Press this button to stop playing a compact disc. AUTO SEARCH III, ) 11 I): Press this b

36、utton to move the pickup to the beginnirlcJ of the current tune while it is being played. Then, each time this button is pressed, the pickup will skip to the beginnin of the previous tune. Keeping this button pressed causes the pickup to skip back continuously. I I I): Press thiS button to move the

37、pickup to the be- elinning of the next tune. After this, each time this button is pressed, the pickup moves forward by one tune. Keeping the button pressed causes the pickup to skip forward continuously 10 KEY ID): Press th is button to use the numeric buttons f) for selecting the CD track. TAPE 1 T

38、APE 1 I El): Press this button to start playing a tape in the cassette deck. STOP I jJ): Press this button to stop playing the cassette deck TAPE 2 Press thiS button to listen to the source connected to the TAPE 2 terminals and press it again to disengage DAT DAT 1El): Press this button to start a d

39、igital audio tape. STOP lOO): Press this button to stop a digital audiu tape AUTO SEARCH III,II) I): Press this button to select the beginning of the previous tune 11 I): Prpss this button to select the beginning of the forward tune. Note: ,Lffi and , have the same function. 10 KEY I D): Press this

40、button to use the numeric but- tons f) for selecting the DA T rTlUSIC No. -16- AX-R551 BK ID PH ONO IRM-SA551 seulement) PHONO I El): Appuyer sur cette touche pour commen- cer la lecture dun disque sur le tourne-disque. Arret (STOP) (00): Appuyer sur cette touche pour ar- reter la lecture du disque

41、sur le tourne-disque. (RM-SA441 seulement) PH ONO (D): Appuyer sur cette touche pour placer le sEdecteur. Disque compact (CD) Disque compact (CD) (E): Appuyer sur cette touche pour am?ter la lecture du disque compact. Arret (STOP) 100): Appuyer sur cette touche pour ar- reter la lecture du disque co

42、mpact Recherche automatique (AUTO SEARCH) (I . 1 ,I I) I 1 . 1): Appuyer sur cette touche pour fai re deplacer le capteur du lecteur de disque au debut du morceau en cours de lecture. Puis a chaque pression de cette touche, le cap- teen sautera au debut de la selection preCEdente. En main- tenant ce

43、tte touche pressee, le capteur fait des sauts arriere en conllnu. (I I): Appuyer sur cette touche pour deplacer le cap- teur au debut du morceau suivant. Apres cela, chaque pres- sion fait deplacer le capteur en avant dun morceau. En maintenant cette touche pressee, il saute continuellement en avanl

44、. 10 touches numerique 110 KEY) (D): Appuyer sur cette touche pour uti I iser les touches numeei ques f) pour la selection de piste de disque compact. tEl Bande 1 (TAPE 1) Bande 1 (TAPE 1): Appuyer sur cette touche pour COrTll1lerlCer la lecture clune cassette dans la platine a cassette. Arret (STOP

45、) (00): Appuyer sur cette touche pour ar- reter la lecture de la cassette dans la platine a cassette. 411 Bande 2 (TAPE 2) Appuyer sur cette touche pour ecouter la SOJrce raccordee au-bornes TAPE 2 et appuyer a nouveau pour la des- engager. 41) Magnetophone audionumerique IDAT) MagOl!tophone audionu

46、merique IDAT) (B): Appuyer sur cette touche pour commencer la lecture d une cassette audionumerrque. Arret (STOP (00): Appuyer sur cette tcuche pour ar- reter la lecture dune cassette audionumeriquE Recherche automatique (AUTO SEARCH) (I I, L) (I I ): Appuyer sur cette touche pour falre deplacer le

47、capteur du lecleur de disque au debut du rTlorceau pre- cedent. I I I): Appuyer sur cette touche pour falre deplacer le capteur du lecteur de disque au debut du mQrceau suivant. Remarque: La fonction de I I I, 1 I) est indi e it celle de IO:l,1. Dix touches (10 KEY) (D): Appuyer su eette touche pour utiliser les touches numeriques f) afin ce selectionner le NO de morceau de la magnetophone aLj i