Jvc-THS-11-Service-Manual电路原理图.pdf
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1、SERVICE MANUALCOPYRIGHT 2005 Victor Company of Japan, LimitedNo.MB4132005/6DVD DIGITAL THEATER SYSTEMMB41320056TH-S11Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)TABLE OF CONTENTS1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-73 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-84 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-235 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . .
4、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25Area suffixC - Canada(SP-THS11F)(SP-THS11C)(SP-THS11S) (SP-WS11)(XV-THS11)1-2 (No.MB413)SPECIFICATIONCenter unit (XV-THS11)Front speakers (SP-THS11F)Center speaker (SP-THS11C)Audio section Front/Center/Su
5、rround 33 W per channel, RMS at 6 at 1 kHz,with 10% total harmonic dis-tortion.Subwoofer 40 W, RMS at 4 at 100 Hz, with 10% total harmonic distortion.Video section Video System NTSCHorizontal Resolution 500 linesSignal-to-Noise Ratio 64 dBVideo output level Composite 1.0 V(p-p)/75 S-video-Y 1.0 V(p-
6、p)/75 S-video-C 0.286 V(p-p)/75 Component(Interlace/Progressive)Y: 1.0 V(p-p)/75 PB/PR: 0.7 V(p-p)/75 CTuner section Tuning Range FM 87.5 MHz to 108.0 MHzAM 530 kHz to 1 710 kHzSpeaker impedance Front/Center/Surround 6 to 16 Subwoofer 4 to 16 General Power Requirements AC 120 V , 60 HzPower Consumpt
7、ion 135 W (at operation)1.3 W (in standby mode)Dimensions (W H D) 360 mm 65 mm 370 mmMass 5.3 kgType 1-Way Bass-Reflex Type(Magnetically-shielded Type)Speaker 8.0 cm cone 1Power Handling Capacity 33 WImpedance 6 Frequency Range 90 Hz to 20 000 HzSound Pressure Level 84 dB/WmDimensions (W H D) 92 mm
8、101 mm 95 mmMass 0.58 kg eachType 1-Way Bass-Reflex Type(Magnetically-shielded Type)Speaker 8.0 cm cone 1Power Handling Capacity 33 WImpedance 6 Frequency Range 90 Hz to 20 000 HzSound Pressure Level 85 dB/WmDimensions (W H D) 92 mm 101 mm 95 mmMass 0.65 kg(No.MB413)1-3Surround speakers (SP-THS11S)S
9、ubwoofer (SP-WS11)Designs & specifications are subject to change without notice.Type 1-Way Bass-Reflex TypeSpeaker 8.0 cm cone 1Power Handling Capacity 33 WImpedance 6 Frequency Range 90 Hz to 20 000 HzSound Pressure Level 82 dB/WmDimensions (W H D) 92 mm 101 mm 95 mmMass 0.56 kg eachType 1-Way Bass
10、-Reflex TypeSpeaker 15.0 cm cone 1Power Handling Capacity 40 WImpedance 4 Frequency Range 40 Hz to 1 800 HzSound Pressure Level 84 dB/WmDimensions (W H D) 129 mm 284 mm 337 mmMass 3.0 kg1-4 (No.MB413)SECTION 1PRECAUTION1.1 Safety Precautions(1) This design of this product contains special hardware a
11、ndmany circuits and components specially for safety purpos-es. For continued protection, no changes should be madeto the original design unless authorized in writing by themanufacturer. Replacement parts must be identical tothose used in the original circuits. Services should be per-formed by qualif
12、ied personnel only.(2) Alterations of the design or circuitry of the product shouldnot be made. Any design alterations of the product shouldnot be made. Any design alterations or additions will voidthe manufacturers warranty and will further relieve themanufacture of responsibility for personal inju
13、ry or propertydamage resulting therefrom.(3) Many electrical and mechanical parts in the products havespecial safety-related characteristics. These characteris-tics are often not evident from visual inspection nor can theprotection afforded by them necessarily be obtained by us-ing replacement compo
14、nents rated for higher voltage, watt-age, etc. Replacement parts which have these specialsafety characteristics are identified in the Parts List of Ser-vice Manual. Electrical components having such featuresare identified by shading on the schematics and by ( ) onthe Parts List in the Service Manual
15、. The use of a substitutereplacement which does not have the same safety charac-teristics as the recommended replacement parts shown inthe Parts List of Service Manual may create shock, fire, orother hazards.(4) The leads in the products are routed and dressed with ties,clamps, tubings, barriers and
16、 the like to be separated fromlive parts, high temperature parts, moving parts and/orsharp edges for the prevention of electric shock and firehazard. When service is required, the original lead routingand dress should be observed, and it should be confirmedthat they have been returned to normal, aft
17、er reassem-bling.(5) Leakage shock hazard testingAfter reassembling the product, always perform an isola-tion check on the exposed metal parts of the product (an-tenna terminals, knobs, metal cabinet, screw heads,headphone jack, control shafts, etc.) to be sure the productis safe to operate without
18、danger of electrical shock.Do notuse a line isolation transformer during this check. Plug the AC line cord directly into the AC outlet. Using a“Leakage Current Tester“, measure the leakage currentfrom each exposed metal parts of the cabinet, particular-ly any exposed metal part having a return path
19、to thechassis, to a known good earth ground. Any leakage cur-rent must not exceed 0.5mA AC (r.m.s.). Alternate check methodPlug the AC line cord directly into the AC outlet. Use anAC voltmeter having, 1,000 per volt or more sensitivityin the following manner. Connect a 1,500 10W resistorparalleled b
20、y 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 ACvoltmeter. Move the resistor connection to each exposed metalpart, particularly any exposed metal part having a returnpath to the chassis, and measure the AC
21、 voltage acrossthe resistor. Now, reverse the plug in the AC outlet andrepeat each measurement. Voltage measured any mustnot exceed 0.75 V AC (r.m.s.). This corresponds to 0.5mA AC (r.m.s.). 1.2 Warning(1) This equipment has been designed and manufactured tomeet international safety standards.(2) It
22、 is the legal responsibility of the repairer to ensure thatthese safety standards are maintained.(3) Repairs must be made in accordance with the relevantsafety standards.(4) It is essential that safety critical components are replacedby approved parts.(5) If mains voltage selector is provided, check
23、 setting for localvoltage.1.3 CautionBurrs formed during molding may be left over on some partsof the chassis. Therefore, pay attention to such burrs in the case of pre-forming repair of this system.1.4 Critical parts for safetyIn regard with component parts appearing on the silk-screenprinted side
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