Yamaha-YSTSW-105-Service-Manual电路原理图.pdf

YST-SW105 SERVICE MANUAL SUBWOOFER SYSTEM YST-SW105 100766 I CONTENTS TO SERVICE PERSONNEL . 1 SPECIFICATIONS. 1 INTERNAL VIEW . 2 REAR PANELS . 2 DISASSEMBLY PROCEDURES . 3 CONFIRMATION OF AUTO STANDBY OPERATION .4 BLOCK DIAGRAM. 4 PRINTED CIRCUIT BOARD . 57 SCHEMATIC DIAGRAM . 8 PARTS LIST. 915 IMPORTANT NOTICE This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel. It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already known and understood by the users, and have therefore not been restated. WARNING:Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons, we advise all YAMAHA product owners that any service required should be performed by an authorized YAMAHA Retailer or the appointed service representative. IMPORTANT:The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form. The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributors Service Division. WARNING:Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss). IMPORTANT:Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit. YST-SW105 P.O.Box 1, Hamamatsu, Japan YST-SW105 235 (9-5/16)260 (10-1/4)20 (3/4) 32 (1-1/4) 312 (12-1/4) 365 (14-7/20) Unit : mm (inch) 1 WALL OUTLET EQUIPMENT UNDER TEST AC LEAKAGE TESTER OR EQUIVALENT INSULATING TABLE WARNING: CHEMICAL CONTENT NOTICE! The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and /or plastic (where applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm. DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REA- SON WHATSOEVER! Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/flux vapor! If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food. I TO SERVICE PERSONNEL 1. Critical Components Information Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. 2. Leakage Current Measurement (For 120V Models Only) When service has been completed, it is imperative to verify that all exposed conductive surfaces are properly insulated from supply circuits. GMeter impedance should be equivalent to 1500 ohm shunted by 0.15F. GLeakage current must not exceed 0.5mA. GBe sure to test for leakage with the AC plug in both polarities. I SPECIFICATIONS Type. Advanced Yamaha Active Servo Technology Output Power .100 W/100 Hz, 5 10% T.H.D. Input Sensitivity (50 Hz, 100 W/5, L+R) INPUT 1 (SP) . 1.4 V INPUT 2 (PJ). 65 mV Input Impedance INPUT 1 (SP) .2.2 k INPUT 2 (PJ).12 k Frequency Response . 30 Hz200Hz Driver Unit .20 cm (8) cone magnetic shielding type x 1 Input Section INPUT 1.Speaker terminal INPUT 2. RCA pin jack Power Supply U, C models . AC120V, 60Hz A model . AC240V, 50Hz B, G models . AC230V, 50Hz R, T models . AC110/120/220/240V, 50/60Hz Power Consumption. 80 W Standby Power Consumption . 0.8 W Dimensions (W x H x D) . 235 x 365 x 312 mm (9-5/16 x 14-7/20 x 12-1/4) Weight . 9.5 kg (20 lbs. 15 oz.) Finish All models .Black color / Cherry color Accessory.Nonskid Pad x 4 U . U.S.A. modelC . Canada model G. Europe modelB . British model A . Australia modelR . General model T . China model Specifications are subject to change without notice due to product improvements. DIMENSIONS YST-SW105 1 2 3 4 5 Right side internal view I INTERNAL VIEW 1 MAIN P. C. B. (4) 2 MAIN P. C. B. (3) 3 MAIN P. C. B. (1) 4 MAIN P. C. B. (2) 5 Power Transformer I REAR PANELS U, C modelsR modelA model B, G modelT model 2 YST-SW105 Extension flexible flat cable Fig. 4 3 3 3 3 CB3 CB9 Apply rapid cures bond Fig. 6 Apply rapid cures bond Fig. 5 2 2 Front Panel Assy Main P.C.B. (4) Fig. 3 1Fig. 2 Fig. 1 3 I DISASSEMBLY PROCEDURES (Remove parts in the order as numbered.) G For exchanging the driver unit 1. Removal of Front Grille The front grille is fixed to the cabinet with dowels at 4 locations. As a screwdriver (for slotted head screw) is used for removal, use special care not to cause damage to the cabinet. a. Apply the block to the rear panel so as to avoid damage to the Terminal of the rear panel. b. Use the screwdriver inserted in the gap between the front grille and the cabinet (bottom side first), push up the front grille. (Fig. 1) c. Remove the front grille by lifting it up. (Fig. 1) 2. Removal of Driver unit a. Remove 4 screws (1) in Fig. 2, and remove the Driver unit. b. Remove the cable cord. G For repairing P.C.B. Repairing P.C.B. is possible without removing front grille. 1. Removal of Front Panel Assy Remove 2 screws (2) and then remove the Front Panel Assy in Fig. 3. *Use an Allen wrench (3 mm) to unscrew the Front Panel Assy. 2. Removal of Rear Panel Remove 12 screws (3) in Fig. 4, and remove the rear panel. At this time, disconnect the connector CB3 of MAIN P.C.B. (1). *When removing the rear panel, replace the packing. 3. P.C.B. Operation Check a. Disconnect the connector CB9 of MAIN P.C.B. (4). b. Connect the connector CB3 of MAIN P.C.B. (1) and CB9 of MAIN P.C.B. (4) by using an extension flexible flat cable. (Fig. 4) Extension flexible flat cable : V7113100 (9P, 450 mm) G Installation of power switch Rapid cures bond (such as 5 minutes epoxy) is required to fix the power switch. As shown in Fig. 5, apply rapid cures bond (such as 5 minutes epoxy) to the power switch (the area which contacts the rear panel), insert it in the rear panel and make sure it is fixed. (Inserting the power switch in the rear panel only would not be sufficient for its secure installation.) G Precaution for installation of power cord After connecting the power cord, be sure to apply the rapid cures bond (such as 5 minutes epoxy) to the cord stopper as shown in Fig. 6. Glue List PlaceName Cord stopper5 minutes epoxy or 2051 (Revertex Finewaters SDN.BHD.) or VYLOK 917DH (National Starch connect a 10k resistor at both ends of R60 on the MAIN P.C.B. (2). 3) Connect the output signal from the signal generator to the INPUT 2 of the unit. 4) Set the signal generator for the sine wave of 100Hz, 8mV. 5) Turn on the power switch. Confirmation 1) Set the AUTO STANDBY switch to the LOW position. AUTO STANDBY OFFHIGH LOW 2) Turn on the STANDBY/ON switch. The display LED lights up (green) and its color changes to red after 5 to 10 seconds. 3) Turn off the STANDBY/ON switch. The display LED goes off. 4) Set the AUTO STANDBY switch to the HIGH position. AUTO STANDBY OFFHIGH LOW 5) Turn on the STANDBY/ON switch. The display LED lights up (green) and its color remains unchanged even after time have elapsed. 6) Turn off the STANDBY/ON switch. The display LED goes off. After confirmation 1) Turn off the power switch. 2) Disconnect the 10k resistor connected to both ends of R60. YST-SW105 ABCDE 1 2 3 4 5 6 7 POWER SW5 To MAIN (2) MAIN P. C. B. (5) GY OR 19 STANDBY / ONB.A.S.S.HIGH CUTVOLUME From MAIN (1) MAIN P. C. B. (4) TOVL E MAIN BASS +V2 +15 -15 PWS VCC 19 1 18 9 15 From MAIN (6) From MAIN (2) From MAIN (3) To MAIN (4) SPEAKER MAIN P. C. B. (1) RE RE VCC E PWS +V1 VCC PWS -15 +15 +V2 BASS MAIN E TOVL BL -15 +15 +15 TOVL E E SP+ SP- + 5 I PRINTED CIUCUIT BOARD (Foil side) YST-SW105 ABCDE 1 2 3 4 5 6 7 18 From MAIN (2) To MAIN (1) MAIN P. C. B. (3) AUTO STANDBY LOWHIGHOFF INPUT 2 OUTPUT / INPUT 1 + E E TOVL +15 +15 -15 SWL SWH2 SWH1 SO E 1189 From MAIN (5) From MAIN (7) (R, T models) From MAIN (8) (J, U, C, A, B, G models) From MAIN (3) To MAIN (1)MAIN P. C. B. (2) SWL SWH2 SWH1 SO E +V1 PWS E VCC WH BE OR GY R60 1M 6 I PRINTED CIUCUIT BOARD (Foil side) YST-SW105 ABCDE 1 2 3 4 5 6 7 (R, T models) To MAIN (7) MAIN P. C. B. (9) VOLTAGE SELECTOR YE BE GR RE BR BL To MAIN (1) POWER TRANSFORMER (J, U, C, A, B, G models) From MAIN (2) MAIN P. C. B. (8)MAIN P. C. B. (6) RE WH BE RE BL To MAIN (1) POWER TRANSFORMER From MAIN (9) MAIN P. C. B. (7)MAIN P. C. B. (6) RE WH RE BL YE BR GR BE BE RE BL (R, T models) 7 I PRINTED CIUCUIT BOARD (Foil side) A 1 2 3 4 5 6 7 8 9 BCDEFGHIJKL YST-SW105 H ? All voltage are measured with a 10M? /V DC electric volt meter. H ? Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. H ? Schematic diagram is subject to change without notice. 電圧、内部抵抗1 0 M電圧計測定 。 s印部品、安全性確保部品示 。部品交換必要場合、 記載部品使用 。 本回路図標準回路図。改良予告 変更。 8 SCHEMATIC DIAGRAM IC12 : NJM78L08A Voltage Regulator IC2 : TDA7293V 100W DMOS Audio Amp. IC5 : M51848L Protect IC3 : PC1237HA Protect IC4, 6, 7, 8 : PC4570HA OP Amp. IC1 : NJM4558L OP Amp. BCE BCE PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS. 2SD2531 2SB1642 2SK3042SC4688D3SBA20S1NB202SC1815 2SA1015 2SC2240 2SA970 2SC2878 EC B + + 1SS133 MTZ15C MTZJ24B MTZJ12C PC4570HA Anode Cathode 1 9 M51848L PC1237HA NJM78L08ATDA7293V 1 8 NJM4558L 1 8 OUT COM IN SG D 1 15 V c c V o1- V m1+ V m1VE E+ V m2- V m2V o2V c c 123456789 +- 12 VIN VOUT GND 12348 + + 657 OUT1 IN1 +IN1 Vcc +IN2 IN2 OUT2 +Vcc 2 3 4 10 9 18 6 5 71113 14 12 15 OUT +PWVsBUFFER DRV+Vs -VsSTBY-GND-PWVs BOOT LOADER BOOT STRAP CLIP DET IN- IN+ SGND MUTE STBY MUTE STBY THERMAL SHUTDOWN S/C PROTECTION 0 0 0 0 0 0 0 0 -14.7 -14.4-42.0 0 0 0 0 00 0 0 0 0 0 0 0 000 -14.4 0.7 14.8 14.8 14.7 14.1 0 45.6 41.8 14.8 25.30.8 6.6 6.6 6.1 0 0 0 0 0 0 0 7.9 0 0.2 0.2 5.6 5.6 11.9 11.8 11.8 0.7 1.4 3.9 3.9 6.7 6.8 7.9 0 0 1.4 6.6 7.9 7.9 5.3 4.7 4.7 5.0 0 -0.3 -0.3 0 00 0 00 0 0 0 0 0 0 0 0 0.1 7.3 7.9 0.1 0.6 1.9 0 0 0 0 0 -14.2 14.5 0 0 0 0 11.3 12.6 -45.7 16.1 45.6 45.6 0.4 -45.7 0 0 -1.8 14.7 14.7 14.0 11.4 -14.3 -14.3 3.3 2.2 0.8 0 2.0 0 0 0 6.0 15.2 -45.8 AC68.1 -14.4 0 14.7 AC11.9 YST-SW105 9 I WARNING Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally in- stalled. GCarbon resistors (1/6W or 1/4W) are not included in the ELECTRICAL PARTS List. For the parts No. of the carbon resistors, refer to last page. ABBREVIATIONS IN THIS LIST ARE AS FOLLOWS: C.A.EL.CHP: CHIP ALUMI.ELECTROLYTIC CAP C.CE: CERAMIC CAP C.CE.ARRAY : CERAMIC CAP ARRAY C.CE.CHP: CHIP CERAMIC CAP C.CE.ML: MULTILAYER CERAMIC CAP C.CE.M.CHP: CHIP MULTILAYER CERAMIC CAP C.CE.SAFTY: RECOGNIZED CERAMIC CAP C.CE.TUBLR: CERAMIC TUBULAR CAP C.CE.SMI: SEMI CONDUCTIVE CERAMIC CAP C.EL: ELECTROLYTIC CAP C.MICA: MICA CAP C.ML.FLM: MULTILAYER FILM CAP C.MP: METALLIZED PAPER CAP C.MYLAR: MYLAR FILM CAP C.MYLAR.ML : MULTILAYER MYLAR FILM CAP C.PAPER: PAPER CAPACITOR C.PLS: POLYSTYRENE FILM CAP C.POL: POLYESTER FILM CAP C.POLY: POLYETHYLENE FILM CAP C.PP: POLYPROPYLENE FILM CAP C.TNTL: TANTALUM CAP C.TNTL.CHP: CHIP TANTALUM CAP C.TRIM: TRIMMER CAP CN: CONNECTOR CN.BS.PIN: CONNECTOR,BASE PIN CN.CANNON: CONNECTOR,CANNON CN.DIN: CONNECTOR,DIN CN.FLAT: CONNECTOR,FLAT CABLE CN.POST: CONNECTOR,BASE POST COIL.MX.AM: COIL,AM MIX COIL.AT.FM: COIL,FM ANTENNA COIL.DT.FM: COIL,FM DETECT COIL.MX.FM: COIL,FM MIX COIL,OUTPT: OUTPUT COIL DIOD.ARRAY : DIODE ARRAY DIODE.BRG: DIODE BRIDGE DIODE.CHP: CHIP DIODE DIODE.VAR: VARACTOR DIODE DIOD.Z.CHP: CHIP ZENER DIODE DIODE.ZENR : ZENER DIODE DSCR.CE: CERAMIC DISCRIMINATOR FER.BEAD: FERRITE BEADS FER.CORE: FERRITE CORE FET.CHP: CHIP FET FL.DSPLY: FLUORESCENT DISPLAY FLTR.CE: CERAMIC FILTER FLTR.COMB: COMB FILTER MODULE FLTR.LC.RF: LC FILTER,EMI GND.MTL: GROUND PLATE GND.TERM: GROUND TERMINAL HOLDER.FUS : FUSE HOLDER IC.PRTCT: IC PROTECTOR JUMPER.CN: JUMPER CONNECTOR JUMPER.TST : JUMPER,TEST POINT L.DTCT: LIGHT DETECTING MODULE L.EMIT: LIGHT EMITTING MODULE LED.DSPLY: LED DISPLAY LED.INFRD: LED,INFRARED MODUL.RF: MODULATOR,RF PHOT.CPL: PHOTO COUPLER PHOT.INTR: PHOTO INTERRUPTER PHOT.RFLCT : PHOTO REFLECTOR PIN.TEST: PIN,TEST POINT PLST.RIVET: PLASTIC RIVET R.ARRAY: RESISTOR ARRAY R.CAR.: CARBON RESISTOR R.CAR.CHP: CHIPRESISTOR R.CAR.FP: FLAME PROOF CARBON RESISTOR R.FUS: FUSABLE RESISTOR R.MTL.CHP: CHIP METAL FILM RESISTOR R.MTL.FLM: METAL FILM RESISTOR R.MTL.OXD: METAL OXIDE FILM RESISTOR R.MTL.PLAT: METAL PLATE RESISTOR RSNR.CE: CERAMIC RESONATOR RSNR.CRYS: CRYSTAL RESONATOR R.TW.CEM: TWIN CEMENT FIXED RESISTOR R.WW: WIRE WOUND RESISTOR SCR.BND.HD : BIND HEAD B-TITE SCREW SCR.BW.HD: BW HEAD TAPPING SCREW SCR.CUP: CUP TITE SCREW SCR.TERM: SCREW TERMINAL SCR.TR: SCREW,TRANSISTOR SUPRT.PCB: SUPPORT,P.C.B. SURG.PRTCT : SURGE PROTECTOR SW.TACT: TACT SWITCH SW.LEAF: LEAF SWITCH SW.LEVER: LEVER SWITCH SW.MICRO: MICRO SWITCH SW.PUSH: PUSH SWITCH SW.RT.ENC: ROTARY ENCODER SW.RT.MTR: ROTARY SWITCH WITH MOTOR SW.RT: ROTARY SWITCH SW.SLIDE: SLIDE SWITCH TERM.SP: SPEAKER TERMINAL TERM.WRAP : WRAPPING TERMINAL THRMST.CHP : CHIP