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 Removal Proc
2、edures. 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 8 RadioFans.C
3、N 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 manufacturer. Replacement
4、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 additions will vo
5、id 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 not evident from v
6、isual 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 components having
7、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 create shock, fir
8、e, 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 required, the orig
9、inal 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 parts of the prod
10、uct (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. Using a Leakage
11、 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 AC line cord direc
12、tly 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 across the resistor wit
13、h 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 measured must not exc
14、eed 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 and manufactured to
15、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 by approved parts. 5.
16、 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 harmonic distortion. 100 watt
17、s 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 ohms from 20 Hz to 20 kHz,
18、 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, 8 ohms) at 100 watts (For o
19、ther 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, Germany and U.K.) Frequency
20、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, TAPE 1, VCR, TV, TAPE 2 MONI
21、TOR 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 I range Loud ness controls (
22、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 Weight Refer to the table on
23、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 & Frequency Power Consumption Continental Europe AC 220 V Av, 50 Hz 205 watts U.K. Austral ia AC 240 V Av, 50 Hz 475 watts U.S. Mili
24、tary Market AC 110/ 120/220/240 V Av seiectable, 50/60 Hz 220 watts Other areas AX-R551 BK (No. 2,) 16) 1-3 AX-R551 BK FRONT PANEL = -= : = 8 : : .= .= .= .= .= AX-R551BK o REMOTE SENSOR .-,.,- . ,.-.,- ,-OTBO -, . -_ . ,_c.-. -:-ll- . -.rnmande de I ega I i seu r Prereglage (PRESET): Appuyer sur ce
25、tte touche pour selectionner une forme de prereglage S.E.A. A chaque pression sur cette touche, la forme pn?reglee de Iegaliseur est changee dans Iordre MANUAL A -B -C -D -E -PROGRAMED A -B -C -D -E, puis rerient de nou-veau a MANUAL A. 0SEA SOURCE Appuyer sur cette touche pour ecouter la so urce av
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