SERVICE MANUAL 73' SANYO
Contents
1. NT OF PEAK LEVEL METER CONDITIONS VOLUME CONTROL 0 Minimum BALANCE CONTROL VOLUME Center BASS CONTROL VOLUME 0 Center TREBLE CONTROL VOLUME 0 Center FUNCTION SWITCH TUNER MONITOR SWITCH SOURCE HIGH FILTER SWITCH OFF LOUDNESS SWITCH OFF OUTPUT LOAD NO LOAD After the power switch is turned on adjust SVR703 and SVR803 respectively as follows L channel SVR703 for 2 3mV reading between the both leads of R734 R channel SV R803 for 2 3mV reading between the both leads of R834 TEST OSCILLATOR OSCILLATOR amp ATTENUATOR INPUT SIGNAL 1kHz 46mV OUTPUT LOAD 8Q 100W non inductive resistance VOLUME CONTROL 10 Maximum 1 Introduce test oscillator signal to the TUNER terminal 2 Adjust test oscillator signal so that LED 3 of the right side peak level meter begins to light The output voltage of the right side becomes about 3 5V at this time Next check that the output voltage of left speaker is same as the right side Adjust with SVR762 so that LED 3 of peak level meter begins to light 3 OSCILLOSCOPE OUTPUT SP DIGITAL VOLT METER DC s H R734 R834 9 703 SVR803 IS J SS 4 SN e i raw rs d gt Y10 4 a o 5 4 Bi jih PHONO pr C701 47u 25V L i Ay R702 ens sli ss N e UE R CQ E At R801 C801 C921 C922 012. S Sie FUNCTION SWITCH Ponce tert MONITOR SWITCH Som ee HIGH FILTER SWITCH S4 LOUDNESS SWITCH 55 POWER SWITCH CONTROLS VR701 BALANCE CONTROL VR702 80 CONTROL VR704 804 CONTROL VR705 805 CONTROL
3. SERVICE MANUAL SANYO STEREO AMPLIFIER JA 20 EUROPE a NOTE SPECIFICATIONS The below mentioned specifications are mainly based on the IHF measurements standard They can therefore not directly be compared with specifications based on the DIN standard or other standards Continuous output power 20 W x 2 at 8 ohms 1 distortion Total harmonic distortion 0 1 16 W output 8 ohms Input sensitivity and impedance PHONG 1 1 1 Le 2 5 mV 47 kohms AUX TUNER TAPEPLAY 150 mV 47 kohms Phono overload level 120 mV RMS at 1 kHz Output level pai jan b 150 mV Frequency S GG 10 Hz 40 kHz AUX Tone control response BASS 2 ee 8 dB at 100 Hz TREBEE2 eee 8 dB at 10 kHz High filter respone an KAN 8 kHz 6 dB oct Loudness control response Vol 30 dB 100 Hz 10 ketenes 8 dB 4 dB Signal to noise 70 dB Power requirements AC 220 V 50 Hz Power consumption TM 90 W AC output socket 5 AC 18 V 300 mA max Dimensions Approx TET E 380 W x 180 D x 88 H mm ee Ta 15 3 16 x 7 1 8 x 3 1 2 Weight Approx ass ere sc 3 6 kg 7 Ibs 15 ozs Specifications subject to change without notice WM 6567 FRONT PANEL DISASSEMBLY FITTING OF LED METER PCB ASS Y ADJUSTMENT 1 ADJUSTMENT OF BIAS CONDITIONS 2 ADJUSTME
4. V e EFT DNE 9 ETE TENDER LL 220072W J SPEAKERS 5 of 50 epee Tol We PEAK LEVEL METER used nis O gt EN Xx 145 C FUSE 901 T630mA YELLOW YELLOW PHONO TUNER AUK LEFT RIGHT PHONES 1 IC701 TA7558 S lt BC Q728 828 25D3130 Q729 829 25B507 a829 a828 Q728 D824 pk Q827 Qi 0825 Q826 6 0826 e R733 d H R834 amp 9 A RT SVR803 7 a825 0822 3 ot 26 R831 TA 9823 C925 gin R827t4p a oh R826 e Ra g2 a I O O T P R822 pu Se C821 MUT C924 ORE e4 Wm E925 0971 gagy Tenan PNE eer Ne NP P i910 BE amp 5 z R743 Bn LES Sos MES 10146 ant ftf a NP P Lo e eJ lotos SAE cag ox e jd 2 21 a pe A 1 M ficia let Igi attt io io T d 19 Laga pm ves tadi edj 101 Se z a 5 3 3S 9 co R814 i R811 Li mx M 10761 861 BA6124 N X R763 se s r9 8 7 6 5 4 3 2 1 9985295555 KN 8 B 1C761 pond 2 EC EC 076 0721 821 0726 826 2SC 2235 9 0763 0722 822 2541016 0727 827 25 965 0765 0723 823 0761 0724 825 25 999 0725 825 25 536 SPEAKERS TO TUNER RIGHT LEFT AC OUT 18 300mA PHONES s d BLUE T901 50Hz SWITCHE
5. pw psi gt U m R704 330 C704 22u 10V R804 Q721 722 821 822 2SA1016G 0724 824 2SA999F Q7 Q723 823 2SA999F Q725 825 2SC536KF Q7 DS442X 428 RS x e Ti m lt SS S3 1 e ES chil 40 O Q 2 R724 560 27 3V C924 0 047 js 721 R721 1u 50V ncz 725 v R903 2 2K 220u125V R904 2 2K wv C905 220u 25V L SW 51 S2 S4 SS ITCHES FUNCTION SWITCH MONITOR SWITCH HIGH FILTER SWITCH LOUDNESS SWITCH POWER SWITCH MAIN TUNER PHONO AUX SOURCE TAPE ON ON ON TO TUNER AC OUT 18V 300mA CONTROLS BALANCE CONTROL VR702 802 VOLUME CONTROL VR704 804 BASS CONTROL VR705 805 TREBLE CONTROL 9726 826 2SC2235Y Q728 828 2SD313D 9727 827 2SA965Y 9729 829 25B507D 9911 82 Q728 FUSE 701 O T2 0A 73V D761 765 R761 R763 10K R735 5 6 1 2W C728 0 047 SVR762 10K 12 S R912 82 SS ape m jaka Jajah Q82 R766 7 416v 330 D764 1 349 A yc 9 0 PLI R767 330 D765 C907 1u 50V R908 330 R862 47K g D R861 FE gaya Di tp cpm t my o 4 o 20 al D zd c Co DS D e Co BR 16V he L P 866 S j 1 861 ij 28 16V NGGE T D861 9548 r 7 nce 16
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