Service manual

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SERVICE MANUAL

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: 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.

IMPORTANT NOTICE

101027

SERVICE MANUAL

REPAIR PROCEDURES / 修理手順 .......................... 11–14

DC OFFSET ADJUSTMENT / DCオフセット調整 ...........

14–15

IC DATA ...................................................................... 16

BLOCK DIAGRAM...................................................... 17

PRINTED CIRCUIT BOARDS ..............................18–20

SCHEMATIC DIAGRAMS .................................... 21–22

REPLACEMENT PARTS LIST............................. 23–34

REMOTE CONTROL ..................................................35

■ CONTENTS

TO SERVICE PERSONNEL ......................................... 2

FRONT PANEL .............................................................3

REAR PANELS ......................................................... 3–5

REMOTE CONTROL PANEL....................................... 6

SPECIFICATIONS /

参考仕様 ................................................ 6

DIMENSIONS ................................................................ 7

INTERNAL VIEW .......................................................... 7

DISASSEMBLY PROCEDURES / 分解手順 .............. 8–10

Soavo-900SW

SUBWOOFER SYSTEM

This manual is copyrighted by YAMAHA and may not be copied or

redistributed either in print or electronically without permission.

’06.09

POWER

STANDBY

SLEEP

PHASE

MEMORY

PRESET

HIGH CUT

VOLUME

231

B.A.S.S.

WH64300

Soavo-900SW

Summary of content (36 pages)

PAGE 1
SUBWOOFER SYSTEM Soavo-900SW SERVICE MANUAL POWER STANDBY SLEEP PHASE B.A.S.S. MEMORY 1 PRESET 2 3 VOLUME HIGH CUT WH64300 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.
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Soavo-900SW ■ TO SERVICE PERSONNEL 1. Critical Components Information Components having special characteristics are marked Z and must be replaced with parts having specifications equal to those originally installed. WALL OUTLET 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. ● Meter impedance should be equivalent to 1500 ohms shunted by 0.15µF.
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Soavo-900SW ■ FRONT PANEL ■ REAR PANELS ▼ U, C models Soavo-900SW 3
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Soavo-900SW Soavo-900SW 4 ▼ R model ▼ T model ▼ K model ▼ A model
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Soavo-900SW ▼ B, G models ▼ L model ▼ J model Soavo-900SW 5
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Soavo-900SW ■ REMOTE CONTROL PANEL POWER SLEEP STANDBY PHASE B.A.S.S. MEMORY 1 PRESET 2 3 VOLUME HIGH CUT WH64300 ■ SPECIFICATIONS / 参考仕様 Type / 型式 ........... Advanced Yamaha Active Servo Technology II B, G models ......................................... AC 230 V, 50 Hz Output Power / 出力 J model ........................................... AC 100 V, 50/60 Hz 100 Hz, 4 ohms, 10 % T.H.D .............................
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Soavo-900SW 457 (18") 4 (3/16") 461 (18-3/16") ■ DIMENSIONS 410 (16-1/8") 30 (1-3/16") 410 (16-1/8") 21.5 (7/8") 461.5 (18-3/16") Unit : mm (inch) ■ INTERNAL VIEW q w e r t y Soavo-900SW u i q DRIVER r DIGITAL P.C.B. w MAIN (4) P.C.B. e MAIN (3) P.C.B. t MAIN (2) P.C.B. y MAIN (1) P.C.B. o !0 u MAIN (7) P.C.B. (R, L models) i POWER TRANSFORMER o MAIN (6) P.C.B. !0 MAIN (5) P.C.B.
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Soavo-900SW ■ DISASSEMBLY PROCEDURES / 分解手順（番号順に部品を取り外してください。） (Remove parts in the order as numbered.) Disconnect the power cable from the AC outlet. AC 電源コンセントから、電源コードを抜いてください。 1. Removal of Front Grille Ass'y 1. フロントグリル ASS'Y の外し方 * The front grille ass'y is fixed to the cabinet with dowels ＊フロントグリル ASS'Y は 5 箇所のダボで固定されていま at 5 locations. す。 As a flatblade screwdriver is used for removal, use 取り外しの際、キャビネット ASS'Y に傷が付かないよう十 special care not to cause damage to the cabinet ass'y.
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Soavo-900SW 2. Removal of Driver a. Remove 8 screws ( q ) and then remove the driver. 2. スピーカーユニットの外し方 a. q のネジ８本を外し、スピーカーユニットを取り外します。(Fig. 1) (Fig. 1) * ＊取り外しには六角レンチ(4 mm)を使用します。 Use an allen wrench (4mm) to unscrew the driver. b. スピーカーユニットの端子からコネクターを外します。 (Fig. 1) b. Disconnect the connector connected to the terminal of the driver. (Fig. 1) 3. Remove of Rear Panel Ass’y a. Remove 12 screws ( w ) and then remove the rea panel ass’y. (Fig. 2) * * Arrow marks ( 3. リアパネル ASS'Y の外し方 a.
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Soavo-900SW 4. Removal of Front Panel Ass’y Remove 4 screws ( e ) and then remove the front 4. フロントパネル ASS'Y の外し方 e のネジ 4 本を外し、フロントパネル ASS'Y を取り外します。(Fig. 4) panel ass’y. (Fig. 4) 5. Removal of Power Transformer Remove 4 screws (r ) and then remove the power 5. 電源トランスの外し方 r のネジ 4 本を外し、電源トランスを取り外します。 (Fig. 4) transformer. (Fig. 4) When Checking the P.C.B.
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Soavo-900SW ■ REPAIR PROCEDURES / 修理手順 Safety Measures 安全対策 • Some internal parts in this product contain high voltages and are dangerous. Be sure to take safety measures ・この製品の内部には高電圧部分があり危険です。修理の際は、絶縁性の手袋を使用するなどの安全対策を行って during servicing, such as wearing insulating gloves. • C77 and C80 on the MAIN (1) P.C.B. are dangerous, ください。 for a high voltage is retained there even after the power is turned off. ・ MAIN (1) P.C.B.
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Soavo-900SW ● Operation Check ● 動作確認 Caution: When taking measurement at the following points 注意）動作チェックをする場合、下記箇所は電圧計などで測定 for operation check, do not use a voltmeter or the like which をしないでください。故障の原因になります。 may cause a failure.
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Soavo-900SW 1. Output Voltage Check a. Disconnect CB22 of the MAIN (1) P.C.B. so that no 1. 出力電圧の確認 load is applied. b. Connect the power cable of this unit to the AC outlet. b. 本機の電源コードを AC コンセントに接続します。 c. 本機“主電源入 / 切”キーを“入”にして、 “STANDBY/ c. Set the “POWER ON/OFF” key of this unit to the “ON” position and press the “STANDBY/ON” key. ON”キーを押します。 d. SP ＋と GND 間および SP −と GND 間の DC 電圧を測定 d. Measure the DC voltage between SP+ and GND and also between SP– and GND. a. MAIN (1) P.C.B.
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Soavo-900SW d. Connect the power cable of this unit to the AC outlet. e. Set the “POWER ON/OFF” key to the ON position and d. 本機の電源コードを AC コンセントに接続します。 e.“主電源入/切”キーをONにして、 “STANDBY/ON”キー press the “STANDBY/ON” key. f. Using the oscilloscope, measure the output waveform を押します。 f. SP ＋と SP −間の出力波形をオシロスコープで測定しま between SP+ and SP–. g. Increase the output level of the signal generator and す。 g.
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Soavo-900SW DIGITAL P.C.B. Soavo-900SW VR101 0 ± 80 mV MAIN (1) P.C.B.
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Soavo-900SW ■ IC DATA IC7 : LC651152N-4N21-E (MAIN (1) P.C.B.
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A B C D E F G H Soavo-900SW ■ BLOCK DIAGRAM 1 MAIN See page 21 SCHEMATIC DIAGRAM A.N.I.C IC13,14,Q20-22 TE1 + L INPUT1 - IC1A 67 + 5 R + IC2A 21 + 3 L.P.F. 6dB/oct IC2B 5+ 7 6 L.P.F. 12dB/oct IC3A 4+ 2 3 L.P.F. 12dB/oct + IC4A 6+ 8 7 L.P.F. 12dB/oct 3+ 4 IC4B 2 6+ IC5A 8 7 H.P.F. 12dB/oct 4 + 2 3 H.P.F. 12dB/oct H-CUT M L 2 IC3B OUTPUT + POSITION SEARCH PJ1 7 RY3 8 L.P.F. 6dB/oct M H.P.
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A B C D E F G H Soavo-900SW ■ PRINTED CIRCUIT BOARDS 1 MAIN (1) P.C.B. POWER TRANSFORMER POWER TRANSFORMER 5 k-ohms (U, C, T, K, A, B, G, J models) Point q (Pin 8 of IC7) MAIN (2) P.C.B. (Side A) (R, L models) (Side A) OUTPUT INPUT 1 L R INPUT 2 (LFE) L/R W5B, W6B MAIN (6) 10W INPUT 3 L/MONO /R W3 MAIN (5) 2 POWER TRANSFORMER Point w CH 1 : Out of IC11 CH 2 : Pin 11 of IC7 3 ↑ ↑ CB105 DRIVER WOOFER MAIN (1) Circuit No.
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A B C D E F G H Soavo-900SW 1 MAIN (3) P.C.B. STANDBY /ON MAIN (4) P.C.B. (Side A) H-CUT MAIN (6) P.C.B. (Side A) (Side A) VOLUME AC IN PRESET 3 2 B.A.S.S. 1 3 2 1 PHASE STANDBY /ON 2 MAIN (1) CB20 M M + + MAIN (1) CB4 3 9 MAIN (1) 1 W5A, W6A MAIN (1) CB5 10 10 1 9 16 8 1 1 9 1 9 1 4 9 16 8 1 R, L models MAIN (5) P.C.B. MAIN (7) P.C.B.
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A B C D E F G Soavo-900SW 1 DIGITAL P.C.B. DIGITAL P.C.B. (Side A) Point e (Pin 23 of IC101) MAIN (1) W10 3 DC OFFSET ADJUSTMENT 2 12 24 13 8 1 16 1 16 3 1 5 4 8 1 9 8 9 Caution: When taking measurement at the following points for operation check, do not use a voltmeter or the like which may cause a failure.
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A B C D E F G H I J K L M N Soavo-900SW ■ SCHEMATIC DIAGRAMS MAIN Point q (Pin 8 of IC7) Page 22 L 0.1 0 14.8 0 14.8 0.1 0.1 0.1 0 0.1 Page 22 14.8 K-4 0.1 0 0 -14.9 0.1 0.1 L/MONO -14.9 0 Point w CH 1 : Out of IC11 CH 2 : Pin 11 of IC7 0 0 INPUT 3 (NORMAL) K-7 0 R Page 22 0 To DIGITAL CB106 INPUT 1/ OUTPUT 2 A-5 To DIGITAL CB101 To DIGITAL CB105 1 0 R – L DRIVER WOOFER + -14.9 0 0 0 49.6 49.6 INPUT 2 (LFE) 49.1 14.8 49.1 -1.7 0 0 3 -1.
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A B C D E F G H I J K L M N O Soavo-900SW 注意）動作チェックをする場合、下記箇所は電圧計などで測定をしないでください。故障の原因になります。 Caution: When taking measurement at the following points for operation check, do not use a voltmeter or the like which may cause a failure.
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Soavo-900SW ■ REPLACEMENT PARTS LIST ● ELECTRICAL COMPONENT PARTS ■ WARNING ● Components having special characteristics are marked Z and must be replaced with parts having specifications equal to those originally installed. ● Z印のある部分は、安全確保部品を示しています。部品の交換が必要な場合、パーツリストに記載されている部品を使用してください。 ● 部品価格ランクは、予告なく変更することがあります。 ABBREVIATIONS IN THIS LIST ARE AS FOLLOWS : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : CHIP ALUMI.
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Soavo-900SW P.C.B. MAIN Ref. No. Part No.
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Soavo-900SW P.C.B. MAIN Ref. No.
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Soavo-900SW P.C.B. MAIN Ref. No. Soavo-900SW D22 D26 Z D27 D28 D29 D30 D31 D32 D33-36 Z D37 Z D38 D39 D77-78 Z F1 Z F1 Z F2 G1 G2 G3 IC1-2 IC3-5 IC6 * IC7 IC8 IC9-10 IC11 IC12-14 IC15 IC16 IC17 IC18 Z JK1 PJ1-2 PN1 PN3 Q1-3 Q4-7 Q10 Q13 Q14-16 Q17 Q18 Q19 Q20 Q21 Q22 R14 R16 R19 R22 R28-29 R112 R117 Part No.
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Soavo-900SW P.C.B. MAIN & DIGITAL Z Z Z Z Z Z Z Z Z Z Z Z Part No. R127 R131-132 R134 R139 R140 RY1 RY2 RY3 ST1-3 SW1 SW2 SW4 T2 T2 T2 T2 T2 T2 TE1 TE1 U1 VR1 VR2 XL1 V6146800 HV753100 HV753100 HV755220 VC751800 V9621000 V5876700 VM640200 V4040500 V2217000 WB493700 VJ810700 X4335A00 X4336A00 X4337B00 X5785A00 X5784A00 X4338A00 V9956100 V9956200 V8085300 VP379100 VP379200 VD997000 WE983600 WJ114500 R.CEMENT R.CAR.FP R.CAR.FP R.CAR.FP R.MTL.OXD RELAY RELAY RELAY SCR.TERM SW VOLT.SELCT SW.
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Soavo-900SW P.C.B. DIGITAL * * * Soavo-900SW * * * * * Ref. No. Part No.
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Soavo-900SW P.C.B. DIGITAL Ref. No. D150 IC101 IC102-103 IC109 IC110 IC111 Q101 Q102 Q103-104 Q105 Q106 Q107 * Q108-111 Q116-117 Q121 Q123 Q124 * Q125-128 R200 R203-204 VR101 * XL101 Part No. VU992600 X5148A00 X7761A00 X3505A00 XJ757A00 XP264A00 VV655300 VV556400 VV556500 VV556400 VV655000 VV556400 WH168500 WD896300 VV556400 VV655400 WG261200 WH161200 VC758100 HV753220 VJ693000 WH384500 V9753800 WF002600 Description DIODE.ZENR IC IC IC IC IC TR.DGT TR TR TR TR.DGT TR FET TR TR TR.DGT FET TR R.MTL.OXD R.
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Soavo-900SW Chip Resistors ● The chip resistor is not supplied as a replacement part. * When a chip resistor is necessary, use the following part. AAX60720: CHIP RESISTOR SAMPLE BOOK Ref.No. Part No. Description Soavo-900SW R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP R.CHP * New Parts (新規部品) 30 0Ω 10Ω 100Ω 220Ω 470Ω 680Ω 1KΩ 1.8KΩ 2.2KΩ 3.3KΩ 3.9KΩ 4.7KΩ 5.
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Soavo-900SW Carbon Resistors Value 1.0 Ω 1.8 Ω 2.2 Ω 3.3 Ω 4.7 Ω 5.6 Ω 10 Ω 15 Ω 22 Ω 27 Ω 33 Ω 39 Ω 47 Ω 56 Ω 68 Ω 75 Ω 82 Ω 91 Ω 100 Ω 110 Ω 120 Ω 150 Ω 160 Ω 180 Ω 200 Ω 220 Ω 270 Ω 330 Ω 390 Ω 430 Ω 470 Ω 510 Ω 560 Ω 680 Ω 820 Ω 910 Ω 1.0 kΩ 1.2 kΩ 1.5 kΩ 1.8 kΩ 2.0 kΩ 2.2 kΩ 2.4 kΩ 2.7 kΩ 3.0 kΩ 3.3 kΩ 3.6 kΩ 3.9 kΩ 4.7 kΩ 5.1 kΩ 5.6 kΩ 6.8 kΩ 8.2 kΩ 9.1 kΩ 1/4W Type Part No. 1/6W Type Part No.
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1 2 3 4 5 6 7 8 Soavo-900SW 5-2 (2) ● OVERALL ASS’Y A 5-2 (5) 200 22 202 5-55 5-56 200-1 5-54 23 5-57 5-2 (1) 204 J model 5-55 5-54 5-56 B 203 J model 7 5-56 5-52 R, L models 26 5-31 10 2 5-54 13 21 C 5-52 5-2 (6) 8 5-2 (7) 25 1 R, L models 5-52 26 5-16 5-54 5-1-13 15 5-1-2 25 5-52 5-1-12 D 22 20 5-2 (4) 3-18 3-5 3-2 17 3-22 19 3-1 3-12 E 5-2 (3) 12 3-19 18 16 18 1-5 3-20 3-19 14 32 F 14 3-15 5-1-15
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Soavo-900SW * * * * * * * * * * * * * * * * * * Z* Z* Z* Z* Z* Z* * * * * * * Part No.
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Soavo-900SW Ref. No. Part No.
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A B C D E Soavo-900SW 1 ■ REMOTE CONTROL ● SCHEMATIC DIAGRAM D1 MIE-554A2 R1 2 ohms + 2 C1 47µF JP1 R2 27 ohms 17 VDD 3 18 19 19 CARR JP4 20 21 22 5 6 12 1 2 18 17 D0 4 16 D1 D2 15 D3 14 13 D4 12 D5 D6 11 D7 IC1 : M34283G2GP-W5/U1 C2 0.1µF 3.0V JP3 9 Q1 2SC3440-T112 20 JP2 Vss 1 E2 2 E1 3 XIN XOUT 4 5 E0 6 G0 7 G1 G2 8 9 G3 10 X1 4.00MHz 4 ● PANEL ● KEY LAYOUT ● KEY CODE CUSTOM CODE (HEX): 7B-84 5 Key No.
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Soavo-900SW Soavo-900SW