User manual SANSUI AU-517 SERVICE MANUAL

[. . . ] . 150mV/47 kilohms n__----_n Output level TAPEREC(pinjack) " 150mV/47kilohms PREOUT 1V/47kilohms Channel separation (1 kHz , at rated power output) Hum and noise Controls PHONO " AUX. . . . . . . . . . . . . . . . . . betterthan60dB betterthan65dB (short-circuit, A-network) PHONO . . . . . . . . . . 78dB BASS. :!:10dB (50 Hz) TREBLE SUBSONIC MUTING Tone selector 200 400 Hz Toneselector. . . . . . . . . . . HIGHFILTER. . . . . . . . . . . . LOUDNESS (-30dB) . , . :!:10dB (15kHz) , 6 kHz ttJ~ "'I 3dB(16Hz), 6dB/oct 3dB (10kHz), 6dB/oct 20dB 9dB at 50Hz 7dBat10kHz Power requirements Powervoltage. . . . . . . . . . . . . [. . . ] Stock No. 2200480 Description 8P lop"' Te. miool 2 F-2723 Conductor Side ualizer Circuit Board (AU-517 Stock No. 7551161) Parts List Parts No. Stock No. De. cr'ption Position , B. R35. Stock No. 0602109 0620121 0620151 0625272 0625103 0231561 0231220 0231273 0231153 0231304 Description 1. 0pF 100V 120PF 150pF 50V 2700pF 10000pF Position 1 C. Ports No. R47. SOl 502 Stock No. 0193820 0193820 1190420 1190410 2410920 Description 82rJ Position 1 A. 2 B 1 A' 82rJ , W lop", Ro'o. y Switch Tope Copy Ro'o. y Switch T. oo, 'sto. 0306290. 0340120 0340120 2SCI4001I)IE. VO1212 ) 0300890. C '"0 3P Pio A, , y Type E nrJ y, W AU-7T7 Only 27krJ 2410910 2PP'"A, , yTypeE VO1212 Vo"sto. 1 A. I 360pF 50V 33pF 100V 250kO(MN)x2 BoloooeVR2A lood"" lem SwHoh Toos Deleo!B 2B 2B 1171120 1171150 1171120 2410570 2410920 Sob'o, l, Fllte' l. , a, SwH, h 5P PI, A, , y Typa D 3PPI, A, , yTypaE 4. 4 D 1 A, 3D 0316170 0316170 0620101 0620331 100pf\ 330pfl 50V P. 5pf 50V C. 2A. 3D 0669505 0202222 0231332 0231332 0103392 0202152 0210470 0210470 0103560 0103560 0103479 0103479 0135338 0135338 0202100 0132229 2'0 2 W N. J. '. 3'0\ " 9kO 3'01 "W M. 1. 5'0 2W N. J. YzW 470\ " 4701 "W N. 3D lor VROI VR02 VRO3 4210290 1033570 1035330 1035310 I. 5pH Co;!1000(6) Vol, ma 2'0(6) Vol, ma !k0(6) Vol, ma Conductor Side 2A. 1 A. 3C. AU-517 Only R03 0107102 R16 0107223 R28 0210560 R31 0210560 RO3 0107122 "0\ 22'01 " W. 560\ " 5601 "W N. J. '. 1. 2'O 2A. 1 A. AU-717 Only R16 0107273 R22 0107103 R28 0210470 R31 0210470 2nO y. , W 10'0 470 CR. 1 A. 3D Ltlr G-e (j I AU-517/717 12. 2675 Power Supply & Protector Circuit Board (AU-517 Stock No. 7502331) Conductor Side Parts List P. , ts No. TRoL02 TR03, TR6or TR602 TR603 TR604 TR605 TR606 TR607 DOL 02 D03, Des. D09, Stock No. 0308. 521, 2 0303361, 2 D. se"ptlon Position 1 B. Stock No. D17-18 D. se"ptlon 152473D 151588 152473D 151588 10D2 (152227) Position 2B 2B 2A 2A 2B 2B 2B 2B 2B 1 B. J. R. Position 2B 2. 5D438 (E, F) 25B560 (E, F) 0305951, 2 25C945 (Q. P) 0305951, 2 25C945 (Q, P) 0305951, 2 25C945 (Q, P) 0300. 510, 25A733 (P, Q) 0305951, 2 25C945 (Q, p) 0305951, 2 25C945 (Q, P) 0305951, 2 25C945 (Q, P) (0311160 0311180 0602338 DINO D6or D602 D603 D604 D605 D606 D607 D6O8 T, a"I"ar 2B 2B 2B 2B (0311160 0311180 0310350 0310350 0311160 0340120 0311160 0311160 0311160 0310340 0316570 0316570 0315760 0316390 0202272 0202272 0210101 0210101 0202100 0202391 0202222 7kO 7kO 1 A. 3 B 2B 2B 2B 1000 10D2(152227) 152473D VD1212 Vari"or 152473D 1000 r;, W t2 100 3900 2 W 2kO J. R. [. . . ] When control. (bias) voltage is not supplied to the base of TR607 in abnormal condition , TR606 and TR607 , 1. When an abnormal negative voltage appears at output TR601 turns off, TR602 turns on and TR603 turns off so that the relay, RL601 , keeps off in order to protect loudspeakers from break- down. 2. While the relay, RL601 , on astable multivibrator repeat turning (switching) on and off alter- nately each other by charging and discharging of capacitors zero voltage(center voltage) controlling TR607 through D607 will increase, resultly the LED701 as protector indicator, starts flickering. When abnormal positive voltage appears at output ~, the voltage is supplied to TR602 directly, and the operation of the protector circuit is same as above mentioned 1, keeps OFF, resultly, the LED701 as protector indicator continues flikering. [. . . ]