Yamaha-T80-tun-sm(1) 维修电路原理图.pdf
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1、STEREO TUNER I(FRON+ PANEL HCONTENTS . TO SRVICE PERSONAL 1 . SPEClFICATlONS 1 . REARPANELS 2 . DISASSEMBLY PROCEDURES 3 . INTERNALVIEW 4 . . ADJUSTMENT . 4 19 BLOCKDIAGRAM . 10 PRINTED ClRGUlT BOARD . 11 13 WIRING DIAGRAM . 14. 15 SCHEMATIC DIAGRAM . 16. 17 EXPLODED VIEW . 18 PARTS LIST . 19 27 NIP
2、PON GAKKl CO., LTD . HAMAMATSU . JAPAN 1 I W - q Q l Printpd in laoan RadioFans.CN 收音机爱 好者资料库WTO SERVICE PERSONAL 1. Critical Compnentt Information. Components having special characteristics are marked A and must be replaced with parts having specifications equal to those originally installed. 2. Le
3、akage Current Measurement (For 120V Model Only). When service has been completed, it is imperative that you verify that all exposed conductive surfaces are properly insulated from supply circuits. EQUIPMENT AC LEAKAGE TESTER Meter impedance should be equivalent to 1500 UNDER TEST or EQUIVALENT ohm s
4、hunted by 0.1 5pF. Leakage current must not exceed 0.5mA. B Be sure to test for leakage with the AC plug in WALL both polarities. OUTLET INSULATING TABLE - IISPECIFSCATIONS FM SECTION Tuning Range . 87.6 - 108.OMHz 50 dB Quieting Sensitivity . . . . . . . . . . . . Mono (DX) 1.6pV (15.3dBf) . . . .
5、. . . . . (NR ON) 1.2pV (12.8dBf) Stereo (DX) . . . . . . . . . . . . 20pV (37.2dBf) . . . . . . . . . . (NR ON) 1OpV (3i.2dBf) h b l e Sensitivity (IHF Mono) 75a . . . . . . . . .0.9V (10.3dBf) Usable Sensitivity (DIN) . . . . . . . . . . . . Mono (SIN 26dB). .l .OpV (E) . . . . . . . . . . . . Ste
6、reo (SIN 46dB) .3.OpV (E) I-e Rarpoma Ratio . . . . . . . . . . . . . . . 9548 . . . . . . . . . . . . . . . . IF Rslponro Ratio .l 15dB . . . . . . . . . . . . Spurious R-ms Ratio. .l l OdB . . . . . . . . . . . . . . . AM Suppression Ratio 70dB Capture Ratio Local . . . . . . . . . . . . . . . . .
7、 . . . . . . 1.2dB Alternate Channel Selectivity DX . . . . . . . . . . . . . . . . . .85dB (U,C,R,A) Selectivity (two Signak)(DIN 40kHz Dev.) . . . . . . . . . . . . . . . . . . . . . . DX 70dB (E) Adjacent Channel Selsctivity DX . . . . . . . . . . . . . . . . . . 20dB (U,C,R,A) Signal to Noise Ra
8、tio (IHF) . . . . . . . . . . . . . . . . Mono .94dB (U,C,R,A) . . . . . . . . . . . . . . . Stereo :86dB (U,C,R,A) Signal to Nobe Ratio . . . . . . . . . . . (DIN-Weighted) Mono 88dB (E) . . . . . . . . . . Stereo. 80dB (E) Harmonic Distortion . Mono 100Hz. .DX0.03%, Local 0.02% (U,C,R,A) . . 1 kHz
9、 .DX0.15%, Local 0,03%(U,C,R,A) 6kHz . . .DX0.4%, Local 0.06% (U,C,R,A) Stereo lM3Hz . .DX0.5%, Local 0.04% (U,C,R,A) 1 kHz . .DXO.5%, Local 0.03% (U,C,R,A) 6kHz. . .DX0.8%, Local 0.07% IU,C,R,AI (4OkHz Dev) Stereo 100Hz . . . . . . DX 0.5%, Local 0.05% (E) l kHz . . . . . . . DX 0.5%. Local 0.04% (
10、El . . . . . 6.3kHz. OX 0.5%, Local 0.08% (E) Strreo Separation (IkHz) (Local) mkHz. a. .65dB 1 kHz. . . . . . . . . . . .65dB (U,C,R,A) 60dB (E) 10kHz . . . . . . . . . . . 50dB (U,C,R,A) 40dB (E) F-affiy Raporar 0+O.d9 . 50Hz to lOkHz . -0.3 Subcarrier Product Ratio . . . . . . . . . . . . . 65dB
11、Metat Saturation Level . . . . . . . . . -3mV (75dBf) AM SECTION Tuning Range . . . . . . . . .510 - 1620kHz (U,C,R) 513 - 1620kHz (E.A,R) Usable Sansitivity . . . . . . . . . . . . . . . . . ,250pV Selectivity. . . . . . . . . . . . . . . . . . . . . 30dB Signal to N o b Ratio. . 55dB Image R w n s
12、 e Ratio . . . . . . . . . . . . . . . 40dB Spurious Response Ratio. . . . . . . . . . . . . . 50dB Distortion (400Hz). . 0.2% AUDIO SECTION Output Levelllmpedance (HIGH) FM (100% MOD, 1kHz) . . . . 1V/2ka (U,C,R,A) 1.6VI2kS2 (E) . FM (30% MOD, 400Hz) 0.3VIZkn . REC CAL (50% MOD, 333Hz) 0.5V12kn .,
13、Output Level/lmpedanee (LOW) i FM (100% MOD, IkHz) . . 0.5VI2.5ka (U,C,R,A) 0.8V12.5kn (E) AM (100% MOD, l kHzl . . . . . . . 0.15V12.5kSZ REC CAL (50% MOD, 333Hz) . . . 0.25VI2.5kn GENERAL Power Supply . . . . . . . . U.S. & Canadian Models 120V, 60Hz . . . . . . . . . General Model. l 1 011 20V, 5
14、0/60Hz 220/240V, 50/60Hz . . . . . . . . . . . . European Model. 220V, 50Hz +,.K , 240V, 50Hz . . . . . . . . . . . . Australian Model 240V. 50Hz Power Cbnspmption- U.S. & Canadian Models . . . . . . . . . . . . . 13W . . . . . . . . . . . . . . . . . . General Model. 13W . . . . . . . . . . . . . .
15、 . . . . European Model. 13W . . . . . . . . . . . . . . . . . Australian Model 12W Dimemion ( W X D ) . 435 X 93.5 X 357rnm (U,C,R,A) (1 7-7 18 X 3-1 132 X 14-1 116) 435 X 93.7 X 357mm (E) (19-118 X 3-1/32 X 14-1/16) Weight-. . . . . . . . . . . . . . . . . . . . . . . . . 5kg (Illbs) Specification
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