Yamaha RX-V320 Service Manual

Contents

A12345678RX-V320B C D E F G H I J K60 SCHEMATIC DIAGRAM [TUNER]V : 2V/div H : 0.1μsec/div2V SAMPLE 0.1usPoint 1 (Pin22 of IC2)DC range 1 : 1 probe0VPIN CONNECTION DIAGRAM OF DIODES, TRANSISTORS AND IC’s.LA12662SC535(A,B,G)2SC1815(Y)1SS1331SS176HSS104MTZJ5.6BAnodeCathode2SC1740S(R,S)DTA114ESDTC144ESECBLA3401LC7213112241SS355UDZS5.6BTE-17AnodeCathodeFMAMAMFM10.4(0)10.5(11.5)0.1(10.6)5.1(5.0)(4.4)(0)5.1(5.2)7.7 (7.6)2.4 (1.1)2.4(1.1)2.4 (1.1)0 (0)11.0 (11.1)11.0 (11.1)11.0 (11.1)0 (0)3.9 (3.7)2.3(2.2)0 (2.1)3.0 (2.8)3.4(2.1)3.9(3.5)3.9(3.5)(1.9)(3.5)5.0 11.4(11.5)5.7(5.7)5.7(5.7)0(0)2.4(0)4.9(5.0)0(2.5)(0) 2.44.9(5.0)(1.0) 1.0(1.0) 1.0(5.0) 4.5(0) 0(0)00.1 10.6(0)0(0)0(0.2)11.4(0)0(0)0(0)0(0)0(2.5) (2.5)2.40(11.5)(11.5)11.411.4(0.2)(1.5)3.90(10.5)1.52.4(1.1)(2.8) 0(2.2) 2.6(2.0) 1.51.511.02.4(11.1)3.0(2.8)(2.1)3.1(3.1)3.1(3.1)3.1(3.1)3.1(3.1)3.0(3.0)3.1(3.1)3.1(3.1)3.0(3.0)3.1(3.1)0(6.9)11.1 (11.2)3.4(3.6)2.8 (7.0)2.8 (5.2)2.8 (5.2)2.8 (9.1)2.8 (2.8)0 (0)4.9(0)4.9 (5.0)0 (0)0 2.8(9.1)0 (0)2.8(9.1)4.9(4.9)0(0)0 (0)4.4(5.2)87.5MHz98.0MHz108.0MHz1.9V4.5V7.8V531KHz1080KHz1611KHz1.3V5.0V7.3VAMFM12.5MONAURAL DISTORTION ADJ.SIGNAL METER ADJ.DISCRIMINATOR BALANCE ADJ.SEPARATION ADJ.(9.4)9.30(0)AM SENSITIVITYVTREGULATORPLLMPXAM/FM IFTO INPUT(1)CB107page 54 I-8bottom viewIC1 : LA1266AM/FM IFIFBUFFER20 18 11 13 10 1 2 3 5 6 7IFBUFFER FM-IF Q.D.VCC12 FM-OUT9 REG.(TO 22PIN)POSTAMP.22 23 24 4 14 19 17 16REG. OSC OSCBUFFER NARROWS-METER AGC S-METER LEDDRIVER 8 V DDGND21 RF MIX AM-IF DET 15 AM-OUTAM-IF STRQ FM-IF FM-INIC2 : LC72131PLL ControllerPOWERONRESETXIN q !8 PDAIN1@2XOUT!6FMINAMINrDItCLyDO!7VDD@0 AOUT1!9!2 IFIN!5eCE@1VSSREFERENCEDIVIDER PHASE DETECTORCHARGE PUMPUNLOCKDETECTORUNIVERSALCOUNTERSWALLOW COUNTER1/16,1/17 4BITS1/212BITSPROGRAMMABLEDIVIDERDATA SHIFT REGISTERLATCHu i o !0 !1 !3C2BI/FBO1BO2BO3BO4IO1IO2IC3 : LA3401MPX22 21OSC20PHASECOMPARATOR19VOL REG18 17 16 15 14 13 12PILOT DETVCOSTOPSYMMETRICALREACTANCECIRCUITFF FF FF38KHzFF19KHz ∠90°FF19KHz ∠0°TRIGGERLAMPDRIVERSTEREOSWITCH80K1 2 3 4 5 6 7 8 9 10 11MUTINGFM AM CHANGEVCC ONMUTINGDECODER MUTING CONTROLFM AM CHANGE OVERRA1KRCRCRB RBMUTINGOUTPUT80K 1K• PK1 : ENV-172A4G1 (V2716700)ANTAGCGND2GND3VT+BIF OUTOSC OUTC1122PC139PL9C286PR1100K C215PC310.01μC320.01μL1C30.75PDT1SVC212R2100KC47PR3100KC510PQ12SK439 R4150R810KR261.5KR27390L2 L3R933C300.018mC130.018mC67PDT2SVC212DT3SVC212R5100KR6100K L8C84PL4C72.5P C1027PC260.01μ C120.018μ C1447PC250.01μR104.7KC162PDT4SVC212C15 L6Q52SC461R20330K R21470 C292PC270.018m R1210KC178PQ42SC461C1827PR1310KR141.8KC9470PR71MQ22SC535R19C2447PR23330R22330KC195PC2012PR2410Q62SC461R25C2315PL71 2 3 4 5 6 7 8L50.47m 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.Each voltage given here represents that in the FM (98.1MHz STEREO) reception mode but the one inthe parentheses ( ) is that in the AM (1080kHz, MAN’L) reception mode.w 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