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SERVICE  MANUAL

SUBWOOFER SYSTEM

YST-SW205/305

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CONTENTS

TO SERVICE PERSONNEL .......................................... 1
SPECIFICATIONS .......................................................... 2
INTERNAL VIEW ........................................................... 3
REAR PANELS .......................................................... 4~5
DISASSEMBLY PROCEDURES ................................... 6

ADJUSTMENTS .............................................................. 7~8
BLOCK DIAGRAM ......................................................... 9
PRINTED CIRCUIT BOARD .................................. 10~15
SCHEMATIC DIAGRAM ........................................ 16~17
PARTS LIST ........................................................... 18~31

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
distributor's Service Division.

WARNING:

S t a t i c   d i s c h a r g e s   c a n   d e s t r o y   e x p e n s i v e
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-SW205/305

P.O.Box 1, Hamamatsu, Japan

YST-SW205

YST-SW305

www. xiaoyu163. com

QQ 376315150

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TEL 13942296513

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TEL  13942296513  QQ  376315150  892498299 

TEL  13942296513  QQ  376315150  892498299 

http://www.xiaoyu163.com

http://www.xiaoyu163.com

Содержание YST-SW205

Страница 1: ...ndividual 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 ...

Страница 2: ... If you come in contact with solder or components located inside the enclosure of this product wash your hands before handling food 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 ...

Страница 3: ... 60Hz Power Consumption 70 W 80 W Standby Power Consumption 0 8 W 0 8 W Dimensions W x H x D 235 x 485 x 402 mm 235 x 585 x 445 mm 9 5 16 x 19 1 16 x 15 13 16 9 5 16 x 23 x 17 1 2 Weight 15 kg 33 lbs 1 oz 21 kg 48 lbs 8 oz Finish All models Black color Cherry color Accessory Nonskid Pad x 4 U U S A model C Canada model A Australia model B British model G Europe model R General model T China model ...

Страница 4: ...U C A B G models MAIN 7 P C B R T models 1 2 3 4 5 6 8 9 0 7 YST SW205 YST SW305 7 MAIN 1 P C B 8 MAIN 2 P C B 9 MAIN 6 P C B 0 Power Transformer www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Страница 5: ...l B G model R model T model 4 YST SW205 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Страница 6: ...l B G model R model T model YST SW305 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Страница 7: ...er unit b Remove the cable cord For repairing P C B Repairing P C B is possible without removing front grille 1 Removal of Front Panel Ass y Remove 2 screws 2 and then remove the Front Panel Ass y in Fig 3 Use an Allen wrench 3 mm to unscrew the Front Panel Ass y 2 Removal of Rear Panel Remove 4 screws 3 and 12 screws 4 in Fig 4 and remove the rear panel At this time disconnect the connector CB3 o...

Страница 8: ...put signal and wait for 2 to 3 minutes in non loaded condition before the adjustment Adjust VR1 so that the voltage between terminals TP11 and TP12 is 30mV to 200mV Confirmation of AUTO STANDBY operation Setting 1 Turn off the power switch 2 In order to shorten the time required for operation check connect a 10kΩ resistor at both ends of R60 on the MAIN 3 P C B 3 Connect the output signal from the...

Страница 9: ... 1 66 1 3 3 1 8 1 6 1 0 1 2 1 0 0 6 0 5 0 5 3 3 3 6 0 1 66 1 66 0 0 1 66 0 0 2 7 0 1 66 7 66 1 66 1 66 1 65 5 2 7 2 7 65 5 2 7 2 7 66 7 66 3 66 7 69 7 IDLING CURRENT ADJ DC 30 mV to 200 mV B A Main 1 P C B Main 2 P C B DC 30 mV to 200 mV TP11 TP12 VR1 D31 D29 Point A Point B 8 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ...

Страница 10: ...W4 PRE DRIVE Q2 10 Q27 30 POWER DRIVE Q16A C 26A C A N I C LIMITER RY1 IC8 9 Q25 D12 13 19 Q18 21 D6 14 33 34 0 1 Q1C 17C 24A Q27 31 PS AMP Q1A 17A 24C Q30 32 PS AMP B B H P F 12dB oct 12 12 REGULATOR POWER SUPPLY D2 IC6 IC10 F1 POWER SW5 B B POWER SUPPLY D1 STANDBY ON SW1 R T ONLY REGULATOR Q13 14 D15 SUB POWER SUPPLY D11 RY2 T1 SPEAKER YST SW305 SPEAKER SPEAKER YST SW205 BLOCK DIAGRAM www xiaoyu...

Страница 11: ... SP SP ー 1 8 Q16C Q1C Q9 Q1A Q17C Q17A Q16A From MAIN 2 IDLING TEST POINT DC 30 mV to 200 mV A B PRINTED CIUCUIT BOARD Foil side YST SW205 10 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Страница 12: ...ー SP SP 1 8 Q16C Q1C Q9 Q1A Q17C Q17A Q16A From MAIN 2 ー IDLING TEST POINT DC 30 mV to 200 mV A B PRINTED CIUCUIT BOARD Foil side YST SW305 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Страница 13: ...rom MAIN 4 To MAIN 5 VCC E E PWS V1 To MAIN 1 DR1 DR2 OUT DR2 DR1 AYST V1 To MAIN 1 B1 E B1 To MAIN 1 TR C TR B TR E From MAIN 6 BE BL BE 1 9 1 9 IDLING CURRENT ADJ 12 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Страница 14: ... SO From MAIN 2 MA2 LIM 12 12 BASS TOVL E MA1 MAIN 3 P C B WH BE U C A B G models To MAIN 8 R T models To MAIN 7 To MAIN 10 GY OR To MAIN 2 V1 PWS E E VCC To MAIN 4 SWL SWH2 SWH1 SO 1 8 1 9 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http ...

Страница 15: ...ED CIUCUIT BOARD Foil side MAIN 5 P C B STANDBY ON B A S S HIGH CUT VOLUME From MAIN 2 TOVL E MA1 BASS V2 12 12 PWS VCC 1 9 MAIN 10 P C B POWER SW5 From MAIN 3 OR GY 14 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Страница 16: ...AIN 3 To MAIN 2 BE BL BE RE BL RE To MAIN 1 MAIN 9 P C B R T models To MAIN 7 VOLTAGE SELECTOR YE BE BL BR RE GR 240V 1 2 5 6 220V 2 3 6 7 110V 3 4 7 8 120V 4 5 8 1 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Страница 17: ...load detect Mid point potential detect Flip flop circuit Vcc on mute AC OFF detect Latch automatic return select Relay drive circuit GND Vcc GND 6 4 1 2 3 TRIGGER OUT RESET REFERENCE VOLTAGE THRESHOLD DISCHARGE VCC 7 8 FLIP FLOP 5 R R R 100 C91 0 01 SG 82K B220 100 16 0 11 8 8 6 8 0 8 6 0 0 11 8 11 9 0 0 0 0 0 0 0 0 11 8 0 7 0 0 0 0 11 9 0 1 9 0 1 0 6 0 0 1 0 0 0 11 8 0 0 0 7 9 7 3 11 9 0 0 0 0 0 ...

Страница 18: ...ice 1 2 5 3 4 7 8 6 Overload detect Mid point potential detect Flip flop circuit Vcc on mute AC OFF detect Latch automatic return select Relay drive circuit GND Vcc GND 6 4 1 2 3 TRIGGER OUT RESET REFERENCE VOLTAGE THRESHOLD DISCHARGE VCC 7 8 FLIP FLOP 5 R R R D5SBA20 C91 0 01 SG 0 11 9 8 7 8 0 8 6 0 0 11 9 12 0 0 0 0 0 0 0 0 0 11 9 0 7 0 0 0 0 12 0 0 1 9 0 1 0 7 0 0 1 0 0 0 11 9 0 0 0 8 1 7 5 12 ...

Страница 19: ...CT 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 CHIP RESISTOR R CAR ...

Страница 20: ...44100 C CE 0 01uF 50V C51 UA654470 C MYLAR 0 047uF 50V C52 UR837100 C EL 10uF 16V C53 UR837100 C EL 10uF 16V C54 FG652120 C CE 120pF 50V C55 FG651220 C CE 22pF 50V C56 UR798330 C EL 330uF 100V C57 UA655100 C MYLAR 0 1uF 50V C58 UA654220 C MYLAR 0 022uF 50V C59 UA654220 C MYLAR 0 022uF 50V C60 UR798330 C EL 330uF 100V C61 VE327000 C MYLAR ML 0 68uF 50V C62 VE326300 C MYLAR ML 0 18uF 50V C63 VE32640...

Страница 21: ...2705 O Y Q28 VE198800 TR 2SC2705 O Y Q29 VE198700 TR 2SA1145 O Y Q30 VE198700 TR 2SA1145 O Y Q31 iA097030 TR 2SA970 GR BL Q32 iC224030 TR 2SC2240 GR BL Q33 iA097030 TR 2SA970 GR BL Q34 iA097030 TR 2SA970 GR BL Q35 iC287820 TR 2SC2878 A B Q36 iC287820 TR 2SC2878 A B R2 HV755470 R CAR FP 470Ω 1 4W R3 HV755470 R CAR FP 470Ω 1 4W R4 VC761800 R MTL OXD 1 5KΩ 2W R10 HB027100 R MTL FLM 10KΩ 1 4W R11 HB02...

Страница 22: ...PWR UC s T1 XV445A00 TRANS PWR ABG s T1 XW607A00 TRANS PWR RT TE1 VT658100 TERM WRAP 352 TX119 TE2 VT658100 TERM WRAP 352 TX119 TE3 V4811400 TERM SP 8P BG TE3 VC313700 TERM SP 8P UCRTA TP11 VT969000 PIN TEST IRS 2049 TP12 VT969000 PIN TEST IRS 2049 VR1 VJ692600 VR TRIM B220Ω VR2 V3582800 VR S10KΩ VR3 V3582700 VR A5KΩ V5995800 PLATE GND V7235100 CN GND JG 11 T V7572400 HOLDER LED LE56209 0 www xiao...

Страница 23: ...V C46 UR838330 C EL 330uF 16V C47 UR838220 C EL 220uF 16V C48 UR778470 C EL 470uF 63V RT C49 VS741700 C CE SAFTY 0 01uF 275V C50 FG644100 C CE 0 01uF 50V C51 UA654470 C MYLAR 0 047uF 50V C52 UR837100 C EL 10uF 16V C53 UR837100 C EL 10uF 16V C54 FG652120 C CE 120pF 50V C55 FG651220 C CE 22pF 50V C56 UR798330 C EL 330uF 100V C57 UA655100 C MYLAR 0 1uF 50V C58 UA654220 C MYLAR 0 022uF 50V C59 UA65422...

Страница 24: ...O Y Q25 V3028000 FET 2SK304 E Q26A iX632610 TR PAIR 2SA1837 O Y Q26C iX632620 TR PAIR 2SC4793 O Y Q27 VE198800 TR 2SC2705 O Y Q28 VE198800 TR 2SC2705 O Y Q29 VE198700 TR 2SA1145 O Y Q30 VE198700 TR 2SA1145 O Y Q31 iA097030 TR 2SA970 GR BL Q32 iC224030 TR 2SC2240 GR BL Q33 iA097030 TR 2SA970 GR BL Q34 iA097030 TR 2SA970 GR BL Q35 iC287820 TR 2SC2878 A B Q36 iC287820 TR 2SC2878 A B R2 HV755470 R CAR...

Страница 25: ...V7182300 VOLT SELCT R8140213 RT s T1 XV443A00 TRANS PWR UC s T1 XV445A00 TRANS PWR ABG s T1 XW607A00 TRANS PWR RT TE1 VT658100 TERM WRAP 352 TX119 TE2 VT658100 TERM WRAP 352 TX119 TE3 V4811400 TERM SP 8P BG TE3 VC313700 TERM SP 8P UCRTA TP11 VT969000 PIN TEST IRS 2049 TP12 VT969000 PIN TEST IRS 2049 VR1 VJ692600 VR TRIM B220Ω VR2 V3582800 VR S10KΩ VR3 V3582700 VR A5KΩ V5995800 PLATE GND V7235100 T...

Страница 26: ... 4 5 1 8 5 1 12 5 1 11 5 1 13 5 33 5 32 5 38 5 32 5 36 5 14 5 35 5 34 5 34 5 5 5 1 1 5 1 1 5 1 1 5 13 4 11 8 2 5 1 1 5 1 1 1 5 5 1 1 11 6 5 1 1 4 5 1 1 10 5 1 1 3 5 1 1 7 22 22 22 22 6 23 1 1 Adhesive is applied here 25 EXPLODED VIEW YST SW205 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 139422965...

Страница 27: ... SHEET 19x24 5 1 11 VT669300 PW HEAD B TITE SCREW 3x8 8 MFC2 5 1 12 EP600190 BIND HEAD B TITE SCREW 3x8 ZMC2 BL 5 1 13 VK173200 SCREW TRANSISTOR 3x15 SP FCM3 s 5 5 XZ843A00 POWER TRANSFORMER UC s 5 5 XZ844A00 POWER TRANSFORMER RT s 5 5 XZ845A00 POWER TRANSFORMER A s 5 5 XZ846A00 POWER TRANSFORMER BG s 5 6 V2689600 POWER CORD 10A SPT 2 2m 1pc UC s 5 6 V6792800 POWER CORD 7 5A 2m 1pc FA 03B A s 5 6 ...

Страница 28: ...38 VA847600 BIND HEAD P TITE SCREW 4x12 MFZN2 BL 6 V7641000 REAR COVER 10 V5984800 PACKING 12 V5984900 BUSH B 13 V7799500 SPACER 21 EP040070 BIND HEAD TAPPING SCREW 4x20 ZMC2 BL 22 VF573000 BIND HEAD TAPPING SCREW 4x25 ZMC2 BL 23 V5537800 HEXAGON SOCKET TAPPING SCREW 4x20 MFZN2BL BL 23 V7275700 HEXAGON SOCKET TAPPING SCREW 4x20 MFNI33 CH ACCESSORIES 203 V5982400 NON SKID PAD 4pcs set 27 YST SW205 ...

Страница 29: ...1 12 5 1 11 5 1 13 5 33 5 32 5 38 5 32 5 36 5 14 5 34 5 34 5 5 5 1 1 5 1 1 5 1 1 5 13 4 11 8 2 5 1 1 5 1 1 1 5 5 1 1 11 6 5 1 1 4 5 1 1 10 5 1 1 3 22 22 22 22 6 23 21 R T version 5 35 5 1 1 7 1 1 Adhesive is applied here EXPLODED VIEW YST SW305 28 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942...

Страница 30: ... 8 VK195900 SHEET 19x24 5 1 11 VT669300 PW HEAD B TITE SCREW 3x8 8 MFC2 5 1 12 EP600190 BIND HEAD B TITE SCREW 3x8 ZMC2 BL 5 1 13 VK173200 SCREW TRANSISTOR 3x15 SP FCM3 s 5 5 XZ838A00 POWER TRANSFORMER UC s 5 5 XZ839A00 POWER TRANSFORMER RT s 5 5 XZ840A00 POWER TRANSFORMER A s 5 5 XZ841A00 POWER TRANSFORMER BG s 5 6 V2689600 POWER CORD 10A SPT 2 2m UC s 5 6 VZ555600 POWER CORD 10A 250V 2m RT s 5 6...

Страница 31: ...CRM3 BL 5 38 VA847600 BIND HEAD P TITE SCREW 4x12 MFZN2 BL 6 V7641000 REAR COVER 10 V5984800 PACKING 12 V5984900 BUSH B 13 V7799500 SPACER 21 EP040070 BIND HEAD TAPPING SCREW 4x20 ZMC2 BL 22 VF573000 BIND HEAD TAPPING SCREW 4x25 ZMC2 BL 23 V5537800 HEXAGON SOCKET TAPPING SCREW 4x20 MFZN2BL BL 23 V7275700 HEXAGON SOCKET TAPPING SCREW 4x20 MFNI33 CH ACCESSORIES 203 V5982400 NON SKID PAD 4pcs set 30 ...

Страница 32: ...35 3470 HF85 3470 5 6 Ω HJ35 3560 HF85 3560 10 Ω HF45 4100 HF45 4100 15 Ω HJ35 4150 HF85 4150 22 Ω HF45 4220 HF45 4220 27 Ω HJ35 4270 HF85 4270 33 Ω HF45 4330 HF45 4330 39 Ω HJ35 4470 HF85 4390 47 Ω HF45 4470 HF45 4470 56 Ω HF45 4560 HF45 4560 68 Ω HF45 4680 HF45 4680 75 Ω HF45 4750 HF45 4750 82 Ω HF45 4820 HF45 4820 91 Ω HF45 4910 HF45 4910 100 Ω HF45 5100 HF45 5100 110 Ω HJ35 5110 HF85 5110 120 ...

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