Yamaha Stagepas 250M Service Manual 电路图.pdf

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1、STAGEPAS 250M 1 SERVICE MANUAL PA011912 CONTENTS（目次） SPECIFICATIONS（総合仕様） . 3 PANEL LAYOUT（） . 4 DIMENSIONS（寸法図） . 4 CIRCUIT BOARD LAYOUT（） . 5 DISASSEMBLY PROCEDURE（分解手順） . 6 LSI PIN DESCRIPTION（LSI 端子機能表） . 14 IC BLOCK DIAGRAM（IC 図） . 16 CIRCUIT BOARDS（基板図） . 17 INSPECTIONS（検査） . 25 ADJUSTMENT OF

2、AMPLIFIER UNIT （調整） . 28 INITIAL SETTING（出荷時設定） . 28 PARTS LIST BLOCK DIAGRAM（） CIRCUIT DIAGRAM（回路図） 20080527-99540 Copyright (c) Yamaha Corporation. All rights reserved. PDF 08.06 Speaker Mixer HAMAMATSU, JAPAN RadioFans.CN 收音机爱 好者资料库 STAGEPAS 250M 2 WARNING Components having special characteristic

3、s are marked and must be replaced with parts having specifi cation equal to those originally installed. IMPORTANT NOTICE FOR THE UNITED KINGDOM Connecting the Plug and Cord WARNING: THIS APPARATUS MUST BE EARTHED IMPORTANT. The wires in this mains lead are coloured in accordance with the following c

4、ode: GREEN-AND-YELLOW : EARTH BLUE : NEUTRAL BROWN : LIVE As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying the terminals in your plug proceed as follows: The wire which is coloured GREEN-and-YELLOW must be connected to the term

5、inal in the plug which is marked by the letter E or by the safety earth symbol or colored GREEN or GREEN- and-YELLOW. The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK. The wire which is coloured BROWN must be connected to the termi

6、nal which is marked with the letter L or coloured RED. 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

7、 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

8、 reasons, we advise all Yamaha product owners that all service required should be performed by an authorized Yamaha Retailer or the appointed service representative. IMPORTANT : This presentation or sale of this manual to any individual or firm does not constitute authorization certification, recogn

9、ition of any applicable technical capabilities, or establish a principal-agent relationship of any form. The data provided is belived 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 Y

10、amaha products. Modifications are, therefore, inevitable and changes in specification 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

11、. Discharge any static electricity your body may have accumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus.) IMPORTANT : Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit. WARNING: T

12、his product contains chemicals known to the State of California to cause cancer, or birth defects or other reproductive harm. DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT SO EVER! Avoid prolonged, unprotected contact between solder and your skin!

13、 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. 印部品、安全維持重要部品。交換場合、安全必指定部品使用。 RadioFans.CN 收音机爱 好者资料库 STAGEPAS 250M 3 SPECIFICATIONS G

14、eneral Specifi cations Maximum Output Power 250 W (10 %)/4 10 % THD at 1 kHz (SPEAKER) 200 W/4 1 % THD at 1 kHz (SPEAKER) Maximum Output Level 116 dB (1 m) Frequency Response (Nominal output level 1 kHz) -3 dB, 0 dB, +1 dB 20 Hz20 kHz (MUSIC/SPEECH=MUSIC) (ST SUB OUT) -3 dB, 0 dB, +1 dB 80 Hz20 kHz

15、(MUSIC/SPEECH=SPEECH) (ST LINK OUT) -3 dB, 0 dB, +1 dB 20 Hz20 kHz, 1 W Output (MUSIC/SPEECH=MUSIC, without Speaker EQ) (SPEAKER) Total Harmonic Distortion 0.5 % 20 Hz, 1 kHz, 20 kHz, +14 dBu GAIN=nominal (ST SUB OUT, ST LINK OUT) Hum & Noise (Equivalent Input Noise, Rs=150 , MIC/LINE=MIC) -106 dBu

16、(CH1/2) -65 dBu Residual output noise (SPEAKER) Crosstalk (1 kHz) -70 dB between input channels Phantom Voltage +15 V (CH12) LIMIT/COMP switch ON=Comp, OFF=Limit (CH1/2) Power Consumption 35 W Weight 13 kg (Speaker + Powered Mixer) Stereo Input Channel Equalization 15 dB HIGH 10 kHz shelving LOW 100

17、 Hz shelving Accessories Power Cable, Speaker Cable, Owners Manual Speakers (500S) Enclosure 2 way bass-refl ex type, Polypropylene, Black Crossover Frequency 4.0 kHz (LF: 12 dB/oct, HF: 12 dB/oct) Frequency Range 55 Hz20 kHz (-10 dB) Speaker Unit LF: 10 (25 cm) Cone HF: 1 (2.54 cm) Compression Driv

18、er 一般仕様 最大出力 250W( 10%)/4 10% THD at 1kHz (SPEAKER) 200W/4 1% THD at 1kHz (SPEAKER) 最大出力音圧 116dB ( 軸上 1m) 周波数特性 ( 出力 1kHz) -3dB, 0dB, +1dB 20Hz 20kHz (MUSIC/SPEECH=MUSIC) (ST SUB OUT) -3dB, 0dB, +1dB 80Hz20kHz (MUSIC/SPEECH=SPEECH) (ST LINK OUT) -3dB, 0dB, +1dB 20Hz 20kHz, 1W 出力 (MUSIC/SPEECH=MUSIC,

19、 EQ 除 ) (SPEAKER) 全高調波歪率 0.5% 20Hz, 1kHz, 20kHz +14dBu GAIN= (ST SUB OUT, ST LINK OUT) & ( 入力換算 , Rs=150 , MIC/LINE =MIC) -106dBu (CH1/2) -65dBu 残留 (SPEAKER) (1 kHz) -70 dB 入出力間 電源 +15V (CH1-2) LIMIT/COMP ON= , OFF= (CH1/2) 消費電力 35 W 質量 13 kg ( ) 入力特性 最大可変幅 ( 15 dB) HIGH: 10kHz LOW: 100Hz 付属品 電源、取扱説

20、明書、保証書 (500S) 2-way 型 , , 黒 周波数 4.0kHz (LF:12dB/oct, HF:12dB/oct) 再生周波数帯域 55Hz 20kHz (-10dB) LF: 10 (25 cm) HF: 1 (2.54 cm) 総合仕様 RadioFans.CN 收音机爱 好者资料库 STAGEPAS 250M 4 PANEL LAYOUT（） DIMENSIONS（寸法図） Unit: mm （単位） Speaker （部） Mixer （部） q AC IN jack (AC IN 端子 ) w POWER switch (POWER ) e SPEAKER jack

21、(for included speaker (500S) only) (SPEAKER 端子 ( 付属 (500S) 専用 ) r ST LINK OUT R jack (ST LINK OUT R 端子 ) t PHONES jack (PHONES 端子 ) y ST SUB OUT L(MONO)/R jacks (ST SUB OUT L(MONO)/R 端子 ) u ST SUB OUT control (ST SUB OUT ) i PHONES control (PHONES ) o Channel input jacks (CH 1, 2) ( 入力端子 (CH 1、2) !0

22、 Stereo channel input jacks (CH 3/4, 5/6, 7/8, 9/10) ( 入力端子 (CH 3/4、5/6、7/8、9/10) !1 MIC/LINE switches (MIC/LINE ) !2 PHANTOM switch (PHANTOM 切替 ) !3 LIMIT/COMP switches (LIMIT/COMP ) !4 Equalizer HIGH/LOW (EQ( ) !5 REVERB switches (REVERB ) !6 REVERB control (REVERB ) !7 CLICK switch (for headphone

23、s/speaker) (CLICK ( / 用 ) !8 LEVEL controls (LEVEL ) !9 MASTER LEVEL control (MASTER LEVEL ) 0 CLICK switch (for headphones) (CLICK ( 用 ) 1 SPEECH/MUSIC switch (SPEECH/MUSIC) 2 LEVEL meter (LEVEL ) 3 POWER indicator (POWER ) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 342 175 544.5 330.0 120 152 2-M8 x

24、25 298 HIGH 15+15 LOW 15+15 LEVEL 010 9/10 HIGH 15+15 LOW 15+15 LEVEL 010 7/8 HIGH 15+15 LOW 15+15 LEVEL 010 5/6 HIGH 15+15 LOW 15+15 LEVEL 010 4 HIGH 15+15 LOW 15+15 LEVEL 010 3 HIGH 15+15 LOW 15+15 LEVEL 010 2 HIGH REVERBREVERBREVERBREVERB 15+15 LOW 15+15 LEVEL 010 1 MONITOR OUT 010 REVERB 010 LEV

25、EL 010 MASTER (MONO)L R L R RR LL MIC LINE MIC LINE MIC LINE MIC LINE PHANTOM CH1-4 LIMIT COMP LIMIT COMP R R L(MONO)LL R OPEN LOCK OPEN LOCK SPEECH POWER MUSIC -20 -6 0 +3 +6 LIMITER SPEAKERS OFFON MONITOR OUT POWER AC IN ONOFF 111.5 Tripod pole diameter 35-36 ( 用穴径 35 36) STAGEPAS 250M 5 CIRCUIT B

26、OARD LAYOUT（） NETWORK NETWORKPOWERDSP AMP CONTROL MOTHER INPUT Speaker LF （LF ） Speaker HF （HF ） Front viewRight side view JACK POWER DSP JACK CONTROL MOTHER INPUT Rear view AMP 6 STAGEPAS 250M DISASSEMBLY PROCEDURE 1. Ass y（所要時間：約 1 分） 1-1 180A 4 本外、 Assy 外。 （図 1） 2. LF （）（所要時間 ： 約 2 分） 2-1 Ass y 外

27、。 （1 項参照） 2-2 160A 8 本外、 LF（ ）外。 （図 1） 2-3 LF（）取付 束線 LF（赤黒）外。 （写真 1） LF（）重量、落 下様注意。 3. 部、 部（所要時間：約 2 分） 3-1 140A 14 本外、 部、 部別。 （図1図2） 3-2 LF（）取付 束線 LF（赤黒）外。 （写真 1） 3-3 HF（）取付 束線 HF（黄青）外。 （写真 2） 部部開 、 LF（）端子、 HF （）端子傷注意。 160A: Bind Head Tapping Screw-P（P BIND） 5.0X18 BL CR3 (WJ559700) 180A: Bind Head

28、 Tapping Screw-P（P BIND） 4.0X12 NI-BL (WJ329500) Fig. 1 ( 図 1) Front grille assembly (Assy) 180A 180A 180A 160A 160A 160A 180A 160A Speaker LF (Woofer) (LF () Front cabinet unit (部) 140A 140A 140A 140A 140A 140A 140A 140A Rear cabinet unit (部) 140A: Bind Head Tapping Screw-A（A BIND） 5.0X45 NI-BL (WJ

29、329900) Fig. 2 ( 図 2) 1. Front Grille Assembly (Time required: About 1 minute) 1-1 Remove the four (4) screws marked 180A. The front grille assembly can then be removed. (Fig. 1) 2. Speaker LF (Woofer) (Time required: About 2 minutes) 2-1 Remove the front grille assembly. (See procedure 1) 2-2 Remov

30、e the eight (8) screws marked 160A. The speaker LF (woofer) can then be removed. (Fig. 1) 2-3 Remove the wire LF (red/black) attached to the speaker LF (woofer). (Photo 1) * The speaker LF (woofer) is heavy. Be careful not to drop it. 3. Front Cabinet Unit, Rear Cabinet Unit (Time required: About 2

31、minutes) 3-1 Remove the fourteen (14) screws marked 140A. The front cabinet unit and rear cabinet unit can then be separated. (Fig. 1, Fig. 2) 3-2 Remove the wire LF (red/black) attached to the speaker LF (woofer). (Photo 1) 3-3 Remove the wire HF (yellow/blue) attached to the speaker HF (tweeter).

32、(Photo 2) * Take care not to open the front cabinet unit and rear cabinet unit too wide or the speaker LF (woofer) terminal and speaker HF (tweeter) terminal may be damaged. （分解手順） 7 STAGEPAS 250M 130A: Bind Head Tapping Screw-B（B BIND） 4.0X20 NI-BL (WJ329100) Photo 3 ( 写真 3) Photo 1 ( 写真 1)Photo 2

33、( 写真 2) 4. HF （）（所要時間 ： 約 3 分） 4-1 部、部 別。 （3 項参照） 4-2 130A 2 本外、 部 HF（）外。 （写真 3） 5. Ass y、NETWORK （所要時間：約 4 分） 5-1 部、部 別。 （3 項参照） 5-2 Ass y SP 束線外。 （写真 4） 5-3 30 4 本外、部 Ass y 外。 （写真 4） 5-4 N40 4 本外、NETWORK 外。 （写真 4-1） N40: Pan Head Tapping Screw-B（B PAN） 3.0X8 CR3 (WJ329000) 4. Speaker HF (Tweeter)

34、(Time required: About 3 minutes) 4-1 Separate the front cabinet unit and rear cabinet unit. (See procedure 3) 4-2 Remove the two (2) screws marked 130A. The speaker HF (tweeter) can then be removed from the front cabinet unit. (Photo 3) 5. Network Assembly, NETWORK Circuit Board (Time required: Abou

35、t 4 minutes) 5-1 Separate the front cabinet unit and rear cabinet unit. (See procedure 3) 5-2 Remove the SP connector assembly from the network assembly. (Photo 4) 5-3 Remove the four (4) screws marked 30. The network assembly can then be removed from the rear cabinet unit. (Photo 4) 5-4 Remove the

36、four (4) screws marked N40. The NETWORK circuit board can then be removed. (Photo 4-1) Photo 4 ( 写真 4) 30: Bind Head Tapping Screw-B（B BIND） 3.0X10 NI-BL (WJ329200) Photo 4-1 ( 写真 4-1) Network Assembly （ Ass y） Wire HF (Blue) (束線HF(青) Wire HF (Yellow) (束線HF(黄) Speaker HF (Tweeter) (HF() 130A Front c

37、abinet unit (部) Speaker HF (Tweeter) (HF () 30 30 Network assembly (Assy) Rear cabinet unit (部) SP connector assembly (SP束線) N40 N40 NETWORK Wire LF (Red) (束線LF(赤) Speaker LF (Woofer) (LF() Wire LF (Black) (束線LF(黒) 8 STAGEPAS 250M 50A: Bind Head Tapping Screw-P（P BIND） 4.0X12 NI-BL (WJ329500) 6. Ass

38、 y（所要時間：約 1 分） 6-1 、形溝 2 箇所 “OPEN”位置回、 Ass y 外 。 （写真 5） 7. JACK （所要時間：約 1 分） 7-1 Ass y 外。 （6 項参照） 7-2 50A 3 本外、JACK 共 Ass y 外。 （写真 6） 7-3 JACK SP 束線外。 （写真 6-1） 7-4 200a 特殊六角 1 個外、 Ass y JACK 外。 （写真 6-1） 6. Mixer Assembly (Time required: About 1 minute) 6-1 Rotate the two (2) straight slots on the fa

39、stener heads with a coin driver or minus driver until each straight slot is in alignment with the “OPEN” position. The mixer assembly can then be removed. (Photo 5) 7. JACK Circuit Board (Time required: About 1 minute) 7-1 Remove the mixer assembly. (See procedure 6) 7-2 Remove the three (3) screws

40、marked 50A. The mount bracket assembly can then be removed together with the JACK circuit board. (Photo 6) 7-3 Remove the SP connector assembly from the JACK circuit board. (Photo 6-1) 7-4 Remove the hexagonal nut marked 200a. The JACK circuit board can then be removed from the mount bracket assembl

41、y. (Photo 6-1) Photo 5 ( 写真 5) Photo 6 ( 写真 6) 200a: Hexagonal Nut（特殊六角）M15.0 BL Photo 6-1 ( 写真 6-1) Fastner head () Mixer assembly (Assy) Fastner head () Fastner head () Fastner head () Coin driver or minus driver ( ) Mount bracket assembly (Assy) 50A Mount bracket assembly (Assy) 200a JACK SP conn

42、ector assembly (SP束線) 9 STAGEPAS 250M 8. （所要時間：約 2 分） 8-1 Ass y 外。 （6 項参照） 8-2 310 8 本 320 特殊平座金 2 個外 、 Ass y 外。 （写真 7） 320 特殊平座金紛失様注意。 （図 3） 9. POWER （所要時間：約 3 分） 9-1 Ass y 外。 （6 項参照） 9-2 外。 （8 項参照） 9-3 280 6 本外、POWER 外 。 （写真 8） 10. DSP （所要時間：約 2 分） 10-1 Ass y 外。 （6 項参照） 10-2 外。 （8 項参照） 10-3 CONTRO

43、L CN27 CN33 DSP 外。 （写真 9） 8. Rear Case (Time required: About 2 minutes) 8-1 Remove the mixer assembly. (See procedure 6) 8-2 Remove the eight (8) screws marked 310 and the two (2) fl at washers marked 320. The rear case can then be removed from the mixer assembly. (Photo 7) * Use care not to lose th

44、e fl at washers marked 320. (Fig. 3) 9. POWER Circuit Board (Time required: About 3 minutes) 9-1 Remove the mixer assembly. (See procedure 6) 9-2 Remove the rear case. (See procedure 8) 9-3 Remove the six (6) screws marked 280. The POWER circuit board can then be removed. (Photo 8) 10. DSP Circuit B

45、oard (Time required: About 2 minutes) 10-1 Remove the mixer assembly. (See procedure 6) 10-2 Remove the rear case. (See procedure 8) 10-3 Remove the DSP circuit board from the connectors CN27 and CN33 of the CONTROL circuit board. (Photo 9) Mixer Assembly （ Ass y） Photo 7 (写真7) 310: Hexagonal Tappin

46、g Screw-B（六角 B ）3.0X8 NI-BL (AAX62010) 320: Flat Washer（特殊平座金）3.2X6.5X0.5 (WP473000) Photo 8 (写真8) 280: Pan Head Tapping Screw-B（B PAN）3.0X8 CR3 (WJ329000) P30A, P30B: Bind Head Screw（小 BIND）M3.0X8 CR3 (AAX61910) Photo 9 (写真9) CN32 CN33 CN27 CN28DSP CONTROL 280 280 P30B P30A POWER Rear case () 310 3

47、10 310 310, 320 310, 320 310 Handle (L)(L) Handle (R)(R) Fig. 3 ( 図 3) 320 x 2 10 STAGEPAS 250M Photo 10 (写真10) 230a: Hexagonal Nut（特殊六角）M15.0 BL 260: Bind Head Tapping Screw-B（B BIND）3.0X10 NI-BL (WJ329200) 11. AMP 、MOTHER （所要時間：約 4 分） 11-1 Ass y 外。 （6 項参照） 11-2 外。 （8 項参照） 11-3 P30A 2 本外、（L） 外。 （写真 8） 11-4 印刷面 230a 特殊六角 1 個 外。 （写真 10） 11-5 260 6 本 外 、AMP 、 MOTHER 共 外。 （写真 10） 11-6 250 5 本外、 AMP MOTHER 外 。 （写真 11） 取付際、 250qw順締。 （写真 11） 11-7 MOTHER CN543 CN544 AMP 外。 （写真 12） 11. AMP Circuit Board, MOTHER Circuit Board (Time required: About 4 minu