Yamaha RX-V320 Service Manual

Contents

A12345678RX-V320B C D E F G H I J K56 SCHEMATIC DIAGRAM (OPERATION [1/2]) All voltages are measured with a 10MΩ/V DC electric volt meter. Components having special characteristics are marked andmust be replaced with parts having specifications equal to thoseoriginally installed. Schematic diagram is subject to change without notice.Conditions• INPUT → CD• VOLUME → minimum(–∞)• IMPEDANCESELECTOR → Left• PRO LOGIC → OnMAIN L34-29.0-26.5-24.0-19.5-26.6-24.0-29.0-24.5~~~~~~~~~~~~-26.64.0-26.8-29.3-26.7-29.0- 29.0-29.0-29.0-29.0-29.0-29.0-29.0-29.00.21.50.3-29.03.83.104.04.94.8-26.8-26.8-26.8-26.8-26.7-26.7-26.14.84.84.84.84.94.94.94.903.9003.83.80000-26.7-26.7-26.7-26.7-26.7-26.702.04.800.14.94.003.83.84.100.70.74.10.72.70004.82.43.8001.5004.9-21.9-21.9-21.9-26.6-26.64.1 4.1-26.8-11.94.94.94.90-11.93.5 3.9-26.7-21.90.30 0 0001.506.39.00.604.80-29.3-22.30005.64.94.85.68.49.89.85.10.60.10.304.94.911.80.10.1 011.8000-12.0000-12.000.10-26.7-26.7-26.7-26.7-26.7-26.1-26.8-26.8-26.8-26 .7-26 .7-24 .5-29 .0-24 .0-26 .6-19 .5-24 .0-26 .5-29 .0-29 .0-29 .0-29 .0-29 .0-29 .0-29 .0-29 .0-29 .0-29 .2-29 .2-26.7-26.8-26.7-26.7-26.7MICROCOMPUTERTONE CONTROL+5VREGULATORPOWERDOWNDETECTRESETFULL MUTEDRIVEVIDEOAUDIOVIDEOAUXTO INPUT(1) #8page 54#8K-4TO INPUT(1) #7page 54 I-1TO MAIN(1) #10page 59FLASH μ-COMWRITE CONNECTORF-4TOINPUT(2)W502page 55M30217MA-A205FP#28K-3FROM POWERTRANSFORMEROPE(7)TO INPUT(1) #6 page 54#6E-8( ) ( )TAPE/MD MON./EXT.DECODER• IC501: M30217MA-A205FP→See page 24~262V SAMPLE 50ns0VPoint e(Pin 13 of IC501)V : 2V/div H : 50nsec/divDC range 1 : 1 probe5V 2V SAMPLE 5s0V(CH2)0V(CH1)CH1CH2Disconnect thepower cord fromthe AC outlet.With the POWERswitch turned ON,connect thepower cord to theAC outlet.This waveform is not available by pushing thepower switch ON and OFF.Point rCH1 : Emitter of Q504CH2 : Collector of Q503V : 5V or 2V/div H : 5sec/divDC range 1 : 1 probeD1991A [Q/R/S]D1991A [Q/R/S]PIN CONNECTION DIAGRAM OF DIODES, TRANSISTORS AND IC’s.2SD1991A(Q,R,S)1SS1331SS176HSS104HZS5B2TDHZS6B2TDNJM78L05A-T3AnodeCathode2SA933S(Q,R)DTC144ESECBE C BHZS7A2TDHZS7B2TD1:INPUT2:COMMON3:OUTPUT1 2 3NJM2068LD8M30217MA-A205FP13031505180811001OUT1 2–IN1 3+IN1 4–Vcc 5+IN2 6–IN2 7OUT2 8+Vcc+–+–IC581, 582 : NJM2068LDDual OP-Ampw w w . x i a o y u 1 6 3 . c o mQ Q 3 7 6 3 1 5 1 5 0 992894298T E L 1 3 9 4 2 2 9 6 5 1 3 992894298051513673QQTEL 13942296513 QQ 376315150 892498299TEL 13942296513 QQ 376315150 892498299http://www.xiaoyu163.comhttp://www.xiaoyu163.com