JVC-THM65-ddcs-sm维修电路原理图.pdf
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1、SERVICE MANUAL COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LIMITED No.MB112 2003/12 DVD DIGITAL CINEMA SYSTEM MB112200312 TH-M65 TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2、1-3 2SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3、 1-7 4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4、 . . . . . 1-40 Area suffix US - Singapore UW - Brazil,Mexico,Peru UJ - U.S.Military UG - Turkey,South Africa,Egypt XV-THM65 SP-PWM65SP-THM65CSP-THM65FSP-THM65FSP-THM65FSP-THM65F RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB112) SPECIFICATION Designs & specifications are subject to change without notice. Cente
5、r unit (XV-THM65) AudioAudio input sensitivity/Impedance (at 1 kHz), Total Harmonic Distortion 0.02 % NOTE : This value is measured at System cord CONNECTOR for reference. Analog inputAUDIO IN (VCR)290 mV/47 K MIC4.3 mV/600 Digital input*DIGITAL IN (DBS)-21 dBm to -15 dBm (OPTICAL)(660 nm E30 nm) *
6、Corresponding to Linear PCM, Dolby Digital, and DTS Digital Surround (with sampling frequency - 32 kHz, 44.1 kHz, 48 kHz) Digital outputDIGITAL OUT-21 dBm to -15 dBm (OPTICAL)(660 nm E30 nm) VideoColor SystemNTSC/PAL selectable Horizontal Resolution500 lines Signal-to-Noise Ratio64 dB Video output l
7、evelComposite1.0 V(p-p)/75 S-video-Y1.0 V(p-p)/75 S-video-C0.286 V(p-p)/75 Component-Y1.0 V(p-p)/75 Component-PB/PR0.7 V(p-p)/75 Video input sensitivity/ Impedance (VCR IN) Composite1.0 V(p-p)/75 S-video-Y1.0 V(p-p)/75 S-video-C0.286 V(p-p)/75 TunerTuning RangeFM87.50 MHz to 108.00 MHz AM531 kHz to
8、1 602 kHz (at 9 kHz intervals) 530 kHz to 1 600 kHz (at 10 kHz intervals) GeneralPower RequirementsAC 110 - 230 V , 50 Hz/60 Hz Power Consumption20 W (at operation) 1.6 W (in standby mode) Dimensions (W H D)400 mm 85 mm 386 mm Mass4.6 kg Subwoofer (SP-PWM65) AmplifierFront/Center/Surround80 W per ch
9、annel, RMS at 6 at 1 kHz, with 10 % total harmonic distortion. Subwoofer120 W, RMS at 4 at 100 Hz, with 10 % total harmonic distortion. SpeakerSpeaker unit20 cm Bass-reflex, Magnetically Shielded Frequency Range25 Hz to 200 Hz GeneralPower RequirementsAC 110 V/127 V/220 - 230 V selectable with the v
10、oltage selector, 50 Hz/60 Hz Power Consumption150 W (at operation) 0 W (in standby mode) Dimensions (W H D)235 mm 355 mm 492 mm Mass13.0 kg Satellite Speakers (SP-THM65F) Speakers5.5 cm 2 Bass-reflex, Magnetically Shielded Power Handling Capacity80 W Impedance6 Frequency Range90 Hz to 20 kHz Dimensi
11、ons (W H D)250 mm 1 103 mm 250 mm Mass3.77 kg Center Speaker (SP-THM65C) Speakers5.5 cm 2 Bass-reflex, Magnetically Shielded Power Handling Capacity80 W Impedance6 Frequency Range90 Hz to 20 kHz Dimensions (W H D)258 mm 75 mm 81 mm Mass0.95 kg RadioFans.CN 收音机爱 好者资料库 (No.MB112)1-3 SECTION 1 PRECAUTI
12、ON 1.1Safety Precautions (1) This design of this product contains special hardware and many circuits and components specially for safety purpos- es. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be
13、identical to those used in the original circuits. Services 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 void the manu
14、facturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom. (3) Many electrical and mechanical parts in the products have special safety-related characteristics. These characteris- tics are often not evident from visual in
15、spection nor can the protection afforded by them necessarily be obtained by us- ing replacement components rated for higher voltage, watt- age, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Ser- vice Manual. Electrical components having su
16、ch features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety charac- teristics as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire,
17、 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 origi
18、nal lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after reassem- bling. (5) Leakage shock hazard testing After reassembling the product, always perform an isola- tion check on the exposed metal parts of the product (an- tenna terminals,
19、 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 Current Tester, measure
20、 the leakage current from each exposed metal parts of the cabinet, particular- ly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage cur- rent must not exceed 0.5mA AC (r.m.s.). Alternate check method Plug the AC line cord directly into the AC outle
21、t. Use an AC voltmeter having, 1,000 per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15F AC-type capacitor between an ex- posed metal part and a known good earth ground. Measure the AC voltage across the resistor with the AC voltmeter. Move the re
22、sistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Voltage measured any must not exceed 0.75 V AC (r.m.s.). This cor
23、responds to 0.5 mA AC (r.m.s.). 1.2Warning (1) This equipment has been designed 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 s
24、afety standards. (4) It is essential that safety critical components are replaced by approved parts. (5) If mains voltage selector is provided, check setting for local voltage. 1.3Caution Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burr
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