Jvc-THS-55-Service-Manual电路原理图.pdf
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1、SERVICE MANUALCOPYRIGHT 2005 Victor Company of Japan, LimitedNo.MB3652005/4DVD DIGITAL CINEMA SYSTEMMB36520054TH-S55,TH-S66TABLE OF CONTENTS1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-
2、42 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-83 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3、1-94 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-215 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4、. . . . . 1-26Area suffixB - U.K.E - Continental EuropeEN - Northern EuropeEV - Eastern EuropeEE - Russian Federation(SP-THS55F)(SP-THS55C) (SP-THS55S)(SP-PWS66)(SP-PWS55)(XV-THS55,XV-THS66)(SP-THS66F)(SP-THS66F) (SP-THS66C) (SP-THS66S)1-2 (No.MB365)SPECIFICATIONCenter unit (XV-THS66/XV-THS55)*1: Th
5、is value is measured at System cord CONNECTOR for reference.*2: Corresponding to Linear PCM, Dolby Digital, and DTS Digital Surround (with sampling frequency - 32 kHz, 44.1 kHz, 48 kHz)Subwoofer (SP-PWS66/SP-PWS55)Audio section Total Harmonic Distortion*1 0.02%Digital input*2 DIGITAL IN(OPTICAL) : -
6、21 dBm to -15 dBm (660 nm 30 nm)Video section Video System PALHorizontal Resolution 500 linesSignal-to-Noise Ratio 64 dB(Composite signal when “RGB“ is selected)Video output level Composite : 1.0 V(p-p)/75 S-video-Y : 1.0 V(p-p)/75 S-video-C : 0.3 V(p-p)/75 Component-Y : 1.0 V(p-p)/75 Component-PB/P
7、R : 0.7 V(p-p)/75 RGB : 0.7 V(p-p)/75 Tuner section Tuning Range FM : 87.50 MHz to 108.00 MHzAM (MW) : 522 kHz to 1 629 kHzGeneral Power Requirements AC 230 V , 50 HzPower Consumption 17 W (at operation)1.3 W (in standby mode)Dimensions (W H D) 435 mm 55 mm 304 mmMass 2.5 kgAmplifier section Front 1
8、40 W per channel, RMS at 4 at 1 kHz, with 10 % total harmonic distortion.Center/Surround 130 W per channel, RMS at 4 at 1 kHz, with 10 % total harmonic distortion.Subwoofer 140 W, RMS at 4 at 100 Hz, with 10 % total harmonic distortion.Speaker section Speaker unit 16 cm Bass-reflexPower Handling Cap
9、acity 140 WImpedance 4 Frequency Range 30 Hz to 200 HzGeneral Power Requirements AC 230 V , 50 HzPower Consumption 135 W (at operation)0 W (in standby mode)Dimensions (W H D) 170 mm 411 mm 451 mmMass 11.5 kg(No.MB365)1-3Satellite SpeakersDesigns furthermore the manufacturer cannotaccept responsibili
10、ty for personal injury or property damage resulting therefrom.(3) Essential safety critical components are identified by ( ) on the Parts List and by shading on the schematics, and must neverbe replaced by parts other than those listed in the manual. Please note however that many electrical and mech
11、anical parts inthe product have special safety related characteristics. These characteristics are often not evident from visual inspection. Partsother than specified by the manufacturer may not have the same safety characteristics as the recommended replacement partsshown in the Parts List of the Se
12、rvice Manual and may 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 hazar
13、d. When service isrequired, the original lead routing and dress should be observed, and it should be confirmed that they have been returned tonormal, after re-assembling.1.5.1 Warning(1) Service should be performed by qualified personnel only.(2) This equipment has been designed and manufactured to
14、meet international safety standards.(3) It is the legal responsibility of the repairer to ensure that these safety standards are maintained.(4) Repairs must be made in accordance with the relevant safety standards.(5) It is essential that safety critical components are replaced by approved parts.(6)
15、 If mains voltage selector is provided, check setting for local voltage.Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system.1-6 (No.MB365)1.6 Preventing static electricityElectrostatic disch
16、arge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laserdiode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.1.6.1 Grounding to prevent damage by static electricityStatic electricity in the work a
17、rea can destroy the optical pickup (laser diode) in devices such as laser products. Be careful to use proper grounding in the area where repairs are being performed. (1) Ground the workbenchGround the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it befor
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