YST-SW320YST-SW320SERVICE MANUAL CONTENTSTO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . . . 1SPECIFICATIONS . . . . . . . . . . . . . . .
ABCDE1234567YST-SW320 PRINTED CIRCUIT BOARD (Foil side)98911MAIN ( 3 ) P. C. B. MAIN ( 7 ) P. C. B. FROM : MAIN (2)+V1PWSEEVCCVCCFROM : MAIN (4)SWLSW
ABCDE1234567YST-SW320 PRINTED CIRCUIT BOARD (Foil side)108191MAIN ( 3 ) P. C. B. MAIN ( 7 ) P. C. B. ORW12BE W9WH W8GYW13TO : MAIN
ABCDE1234567YST-SW3209118BASS PHASE AUTOSTANDBYINPUT2RL+ –– +OUTPUTINPUT 1MA2LIM–12+12TOVLEMA1TO : MAIN (2)#1W1SWLSWH2SWH1SOTO : MAIN (3)#4W4MAIN ( 4
ABCDE1234567YST-SW320W7W6W5W14W15W16FROM : POWER TRANSFORMERREBLREBEBLBETO : MAIN (2)TO : MAIN (1)MAIN ( 6 ) P. C. B. W12W13ORGYTO : MAIN
ABCDE1234567YST-SW320IC11AIC11BIC7AAUTO STANDBYSW3AUTO POWER ON/OFF CIRCUITVR3VOLUMEL.P.F.6dB/octB.P.FQ33—36L.P.F.12dB/oct3615768IC7BIC3Q22, 2342D8D17
ABCDEFGH123456IJK78YST-SW320 SCHEMATIC DIAGRAMVO12–Vm13+Vm14VEE5+Vm26–Vm27VO28VCC9VCC11–+–+2IC1, 4, 7—9 : µPC4570HADual OP-AmpIC5 : M51848LCR Timer*
YST-SW320YST-SW32015ABBREVIATIONS IN THIS LIST ARE AS FOLLOWS :C.A.EL.CHP : CHIP ALUMI. ELECTROLYTIC CAPC.CE : CERAMIC CAPC.CE.ARRAY : CERAMIC CAP ARR
YST-SW320YST-SW320SchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*16P.C.B. MAIN* V5057600 P.C.B. MAIN(UC)* V5057700 P.C.
YST-SW320YST-SW320SchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*17P.C.B. MAIND5 iF004600 DIODE 1SS133D6 iF004600 DIODE
YST-SW320YST-SW320SchmRef. PART NO. DescriptionNew Parts*SchmRef. PART NO. DescriptionNew Parts*18P.C.B. MAINR45 HV456120 R.CAR.FP 1.2KΩ 1/4W* R46 V60
YST-SW320YST-SW320 TO SERVICE PERSONNEL1. Critical Components InformationComponents having special characteristics are marked Zand must be replaced w
ABCDE1234567YST-SW320 EXPLODED VIEW19343434134213232322633335-1-15-1-115-1-15-1-15-1-15-1-15-1-15-1-45-1-85-1-125-1-65-1-125-1-135-1-55-1-75-94-14-64
YST-SW320YST-SW320 MECHANICAL PARTS20Ref.No. PART NO. Description Remarks MarketsNew Parts** 1 V6182200 CABINET ASS’YCH* 1 V5866400 CABINET ASS’YBL*
YST-SW320YST-SW320Ref.No. PART NO. Description Remarks MarketsNew Parts*215-33 EX601360 BIND HEAD P-TITE SCREW 3x10 FCRM3-BL5-34 VT669300 PW HEAD
Parts List for Carbon Resistors1/6W Type Part No.HF45 7100HF45 7110HF85 7120HF45 7130HF45 7150HF45 7180HF45 7220HF45 7240HF85 7270HF45 7300HF45 7330HF
YST-SW320YST-SW320 REAR PANEL▼ U, C models ▼ A model▼ B, G models▼ R model ▼ T model2R, T models only
YST-SW320YST-SW320 DISASSEMBLY PROCEDURES(Remove parts in the order as numbered.)1. Removal of Front Panel Ass'yRemove 4 screws ( q ) and then r
YST-SW320YST-SW320Glue ListPlace NameCord stopper5 minute epoxy or2051(Revertex Finewaters SDN.BHD.) orVYLOK 917DH (National Starch &Chemical (M)
YST-SW320YST-SW3205 ADJUSTMENTS● Idling AdjustmentTo stabilize operation of the amplifier, turn ON thepower with no input signal and wait for 1 or 2
YST-SW320YST-SW3206IDLING CURRENT ADJ.DC 50mV to 250mVABREWHMain (1) P.C.BDC 50mV to 250mVTP11 (+)TP12 (-)VR1D30D29Point APoint B● Schematic Diagram●
ABCDE1234567YST-SW320 PRINTED CIRCUIT BOARD (Foil side)781FROM : MAIN (2)REWHW19W20TO : SPEAKER+V1AYSTDR–OUTDR+–B1E+B1REBLREW7W6W5TO : MAIN (6)FROM :
ABCDE1234567YST-SW320 PRINTED CIRCUIT BOARD (Foil side)89191BEBLBEW16W15W14TO : MAIN (6)TO : MAIN (1)DR+OUTDR—AYST+V1#17W17TO : MAIN (3)VCCVCCEEPWS+V
Comments to this Manuals