Yamaha-STAGEPAS-300-AC-Service-Manual电路原理图.pdf

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1、STAGEPAS 300 1 SERVICE MANUAL PA 011775 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 IC BLOCK DIAGRAM（IC図）. 15 CIRCUIT BOARDS（基板図）. 16 INSPECTIONS（検査） . 23 TROUBLE SHOOTING（）. 26 PARTS LIST BLOCK DIAGRAM（） CIRC

2、UIT DIAGRAM（回路図） Copyright (c) Yamaha Corporation. All rights reserved. PDF-K9611 05.04 HAMAMATSU, JAPAN 20050321-86100 SpeakerSpeakerMixer STAGEPAS 300 2 WARNING Components having special characteristics are marked and must be replaced with parts having specification equal to those originally insta

3、lled. 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 ther

4、efore 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

5、 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, recognition of any applicable technical capabilities, or

6、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 Yamaha products. Modifications are, therefore, inevi

7、table 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. Discharge any static electricity your body may hav

8、e 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: CHEMICAL CONTENT NOTICE! The solder used in the produc

9、tion 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 ha

10、rm. 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! When soldering, do not inhale solder fumes or expose eyes to solder/ flux vapor! If you come in contact with solder or co

11、mponents located inside the enclosure of this product, wash your hands before handling food. This applies only to products distributed by Yamaha-Kemble Music (U.K.) Ltd.(3 wires) IMPORTANT NOTICE FOR THE UNITED KINGDOM Connecting the Plug and Cord WARNING: THIS APPARATUS MUST BE EARTHED IMPORTANT. T

12、he wires in this mains lead are coloured in accordance with the following code: GREEN-AND-YELLOW BLUE BROWN : EARTH : NEUTRAL : 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

13、: The wire which is coloured GREEN-and-YELLOW must be connected to the terminal 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 colou

14、red BLACK. The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED. 印部品、安全維持重要部品。交換場合、安全必指定部品使用。 STAGEPAS 300 3 SPECIFICATIONS General Specifications Maximum Output Power 150 W+150 W/6 10 % THD at 1 kHz (SPEAKER L/R) 100 W+100 W/6 1 % THD

15、at 1 kHz (SPEAKER L/R) Frequency Response -3 dB, 0 dB, +1 dB 20 Hz20 kHz, 1 W Output/6 (Without MUSIC/SPEECH, EQ and SP EQ Circuit) (SPEAKER L/R) -3 dB, 0 dB, +1 dB 20 Hz20 kHz, +4 dBu 10 k Load MUSIC/SPEECHswitch=MUSIC (MONITOR OUT, REC OUT) Total Harmonic Distortion 1 % 1 kHz, 50 W Output Power (S

16、PEAKER L/R) 0.5 % 20 Hz20 kHz, +14 dBu 10 k (MONITOR OUT, REC OUT) Hum & Noise (20 Hz20 kHz, Rs=150 , MIC/LINE switch=MIC) -65 dBu Residual output noise (SPEAKER L/R) -90 dBu Residual output noise (MONITOR OUT, REC OUT) -67 dBu MONITOR OUT control & one CH LEVEL control at nomunal level (CH14)(MONIT

17、OR OUT) Crosstalk (1 kHz) -70 dB between input channels Weight 18 kg (mixer and two speakers) Power Consumption 70 W Stereo Input Channel Equalization: Shelving turnover/rolloff frequency: 3 dB before maximum cut or boost. 15 dB HIGH10 kHz shelving LOW100 Hz shelving Accessories Power Cable, Speaker

18、 Cable, Owners Manual Option Microphone Speaker Enclosure Bass-reflex type Speaker Unit LF: 8 (20 cm) Cone HF: 1 (2.54 cm) Compression Driver Cross Over Frequency 4 kHz Frequency Range 55 Hz20 kHz Maximum Output Level 112 dB (1 m) 一般仕様 最大出力 150 W+150 W/6 10 % THD at 1 kHz (SPEAKER L/R) 100 W+100 W/6

19、 1 % THD at 1 kHz (SPEAKER L/R) 周波数特性 -3 dB, 0 dB, +1 dB 20 Hz20 kHz, 1 W 出力/6 (MUSIC/SPEECH, EQ and SP EQ Circuit 除) (SPEAKER L/R) -3 dB, 0 dB, +1 dB 20 Hz20 kHz, +4 dBu 10 k Load MUSIC/SPEECH=MUSIC (MONITOR OUT, REC OUT) 全高調波歪率 1 % 1 kHz, 50W Output Power (SPEAKER L/R) 0.5 % 20 Hz20 kHz, +14 dBu 1

20、0 k (MONITOR OUT, REC OUT) & (20 Hz20 kHz, Rs=150 , MIC/LINE =MIC) -65 dBu 残留 (SPEAKER L/R) -90 dBu 残留 (MONITOR OUT, REC OUT) -67 dBu MONITOR OUT&1 (CH14)(MONITOR OUT) (1 kHz) -70 dB 入出力間 質量 18 kg (2台) 消費電力 70 W 入力特性 /周波数: 最大可変幅(15 dB)対3 dB下 HIGH10 kHz LOW100 Hz 付属品 電源、 、 取扱説明書、 保証書 型 LF: 8 (20 cm)

21、HF: 1 (2.54 cm) 周波数 4 kHz 再生周波数帯域 55 Hz20 kHz 最大出力音圧 112 dB (軸上1 m) 総合仕様 STAGEPAS 300 4 PANEL LAYOUT（） DIMENSIONS（寸法図） 160 290 255 455.5 275 137 2-M8x25 120 MSC 2 3 1 MSC 2 3 1 MSC 2 3 1 MSC 2 3 1 96.3 Unit: mm （単位） Speaker （部） Mixer （部） qw e r t i !5!1 !7 !4 !6 y !3 !2 !0ou q POWER switch (POWER) w

22、 AC IN jack (AC IN端子) e SPEAKER L/R jacks (SPEAKER L/R端子(付属用) r REC OUT L/R jacks (REC OUT L/R端子) t MONITOR OUT L(MONO)/R jacks (MONITOR OUT L(MONO)/R端子) y Channel input jacks (CH 1 to 4) (入力端子 (CH 14) u Stereo channel input jacks (CH 5/6, 7/8) (入力端子(CH 5/6、 7/8) i MIC/LINE switches (MIC/LINE) o Equ

23、alizer HIGH/LOW (EQ() !0 REVERB switches (REVERB) !1 REVERB control (REVERB) !2 LEVEL control (LEVEL) !3 MASTER LEVEL control (MASTER LEVEL) !4 SPEECH/MUSIC switch (SPEECH/MUSIC) !5 MONITOR OUT control (MONITOR OUT) !6 LEVEL meter (LEVEL) !7 POWER indicator (POWER) STAGEPAS 300 5 CIRCUIT BOARD LAYOU

24、T（） NETWORK2 NETWORK1 or NETWORK2 NETWORK1 or POWERPOWER FILTER INPUT JACK2 JACK1A JACK1B or FILTER VR VR Speaker LF （LF ） Power amplifier unit （） Power amplifier unit （） Speaker HF （HF ） Front viewRight side viewRear view STAGEPAS 300 6 DISASSEMBLY PROCEDURE 1.Assy（所要時間：約1 分） 1-1120A4本外、Assy 外。 （図

25、1） 2.LF （）（所要時間：約2分） 2-1 Assy 外。 （1 項参照） 2-2100A 4 本外、 LF（ ）外。 （図 1） 2-3LF（）取付 束線 LF（赤黒）外。 （写真 1） 3.部、 部（所要時間：約 3 分） 3-1 Assy 外。 （1 項参照） 3-280A5本80B4本外、 部、部別 。 （図 1,2） 3-3LF（）取付 束線 LF（赤黒）外。 （写真 1） 3-4HF（）取付 束線 HF（黄青）外。 （写真 2） 部部 開、LF（）端子、 HF（）端子傷注 意。 80A:Bind Head Tapping Screw-A ( A ) 5.0X35 NI-BL

26、(AAX61640) 100A: Bind Head Tapping Screw-B ( B ) 4.0X18 NI-BL (AAX61660) 120A: Bind Head Tapping Screw-B ( B ) 4.0X10 NI-BL (AAX61680) Fig.1 (図 1) Front grille assembly (Assy) 80A 100A 80A 120A 120A 100A 80A 120A 100A 80A 120A 100A 80A Speaker LF (Woofer) (LF () Front cabinet unit (部) 80B 80B 80B 80

27、B Rear cabinet unit (部) 80B:Bind Head Tapping Screw-A (A) 5.0X35 NI-BL (AAX61640) Fig.2 ( 図 2) 1.Front Grille Assembly (Time required: About 1 minute) 1-1Remove the four (4) screws marked 120A. The front grille assembly can then be removed. (Fig.1) 2.Speaker LF (Woofer) (Time required: About 2 minut

28、es) 2-1Remove the front grille assembly. (See procedure 1) 2-2Remove the four (4) screws marked 100A. The speaker LF (woofer) can then be removed. (Fig.1) 2-3Remove the wire LF (red/black) attached to the speaker LF (woofer). (Photo.1) 3.Front Cabinet Unit, Rear Cabinet Unit (Time required: About 3

29、minutes) 3-1Remove the front grille assembly. (See procedure 1) 3-2Remove the five (5) screws marked 80A and four (4) screws marked 80B. The front cabinet unit and rear cabinet unit can then be separated. (Fig.1,2) 3-3Remove the wire LF (red/black) attached to the speaker LF (woofer). (Photo.1) 3-4R

30、emove the wire HF (yellow/blue) attached to the speaker HF (tweeter). (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 300 70A:Bind Head Tapping Screw-B (B) 4

31、.0X20 NI-BL (AAX61630) Fig.3 ( 図 3) Wire LF (Red) (束線LF(赤) Speaker LF (Woofer) (LF() Wire LF (Black) (束線LF(黒) Photo 1 ( 写真 1) Wire HF (Blue) (束線HF(青) Wire HF (Yellow) (束線HF(黄) Speaker HF (Tweeter) (HF() Photo 2 ( 写真 2) 4.HF （）（所要時間：約4分） 4-1 Assy外。 （1 項参照） 4-2部、部 別。 （3 項参照） 4-370A 2 本外、 部HF （） 外。（図3）

32、 5.Assy、NETWORK1 NETWORK2 （所要時間：約7 分） 5-1 Assy外。 （1 項参照） 5-2部、部 別。 （3 項参照） 5-3134本外、 部 Assy 外。 （図 4） 5-4N404本外、NETWORK1 NETWORK2 固定金 具 C、D 外。 （図 4） 70A Front cabinet unit (部) Speaker HF (Tweeter) (HF () 13 X 4 Network assembly (Assy) Network holder C (固定金具C) Network holder D (固定金具D) Rear cabinet uni

33、t (部) N40 X 4 NETWORK2 NETWORK1 or 13:Bind Head Tapping Screw-B ( B ) 3.0X10 NI-BL (AAX61710) N40: Pan Head Tapping Screw-B (B) 3.0X8 CR3 (AAX61700) Fig.4 ( 図 4) 4.Speaker HF (Tweeter) (Time required: About 4 minutes) 4-1Remove the front grille assembly. (See procedure 1) 4-2Separate the front cabin

34、et unit and rear cabinet unit. (See procedure 3) 4-3Remove the two (2) screws marked 70A. The speaker HF (tweeter) can then be removed from the front cabinet unit. (Fig.3) 5.Network Assembly, NETWORK1 Circuit Board or NETWORK2 Circuit Board (Time required: About 7 minutes) 5-1Remove the front grille

35、 assembly. (See procedure 1) 5-2Separate the front cabinet unit and rear cabinet unit. (See procedure 3) 5-3Remove the four (4) screws marked 13. The network assembly can then be removed from the rear cabinet unit. (Fig.4) 5-4Remove the four (4) screws marked N40. The network holders C and D can the

36、n be removed from the NETWORK1 circuit board or NETWORK2 circuit board. (Fig.4) STAGEPAS 300 8 Fastner head () Mixer assembly (Assy) Rear case side (側) Panel side (側) Cover mold assembly (Assy) Coin driver or minus driver ( ) Fig.5 ( 図5) Mount bracket assembly (Assy) 16 X 3 140a JACK1A JACK1B or 16:

37、Bind Head Tapping Screw-B ( B ) 4.0X10 NI-BL (AAX61680) 140a: Hexagonal Nut ( 特殊六角) M15.0 BL Fig.6 ( 図6) 6. Assy、 Assy （所要時間：約1 分） 6-1、 形溝 2 箇所 OPEN 位置回、 Assy Assy 外。 （図 5） 7.JACK1A JACK1B （所要時間：約2 分） 7-1AssyAssy外 。 （6 項参照） 7-216 3 本外、JACK1A JACK1B共Assy 外。 （図 6） 7-3140a特殊六角1個外、 AssyJACK1AJACK1B 外。 （

38、図 6） 6.Mixer Assembly, Cover Mold Assembly (Time required: About 1 minute) 6-1Rotate the two (2) straight slots on the fastener heads with a coin driver or minus driver until each straight slot is in alignment with the OPEN position. The mixer assembly or cover mold assembly can then be removed. (Fi

39、g.5) 7.JACK1A Circuit Board or JACK1B Circuit Board (Time required: About 2 minutes) 7-1Remove the mixer assembly or cover mold assembly. (See procedure 6) 7-2Remove the three (3) screws marked 16. The mount bracket assembly can then be removed together with the JACK1A circuit board or JACK1B circui

40、t board. (Fig.6) 7-3Remove the hexagonal nut marked 140a. The JACK1A circuit board or JACK1B circuit board can then be removed from the mount bracket assembly. (Fig.6) 9 STAGEPAS 300 340 X 8 Panel assembly (Assy、側) Connector assembly A (束線A) Connector assembly B (束線B) Connector assembly C (束線C) Rear

41、 case assembly (Assy、側) VR circuit board - CN24 (VRCN24) POWER circuit board - CN2 (POWERCN2) POWER circuit board - CN9 (POWERCN9) 340: Hexagonal Tapping Screw-B ( 六角 B ) 3.0X8 NI-BL (AAX62010) Fig.7 ( 図 7) 8.Assy （側、 側） （所要時間：約3 分） 8-1 Assy外。 （6 項参照） 8-23408本外、 Assy 側側別。 （図7） （下記注意 事項参照） 側取外接続時注意 側

42、外時、3本束線（束線A,B,C） 注意。 （図 7） 側取付際、3 本束線（束線 A,B,C） A B C 順接続。 （図 7） 側（ Assy）分解 以下各部品（9 項13 項）取外前、 Assy （6項参照） 、 側 （8項参照） 外。 9.INPUT （所要時間：約6 分） 9-1印刷面190a特殊六角 8 個、 200 10 本外。 （図 8） 9-2VRCN21、 CN26INPUT 外。 （図 8） 170 4 個180 4 個、INPUT 構成部品 。INPUT交換際必 取外、新INPUT取付 。 （図 9） 8.Mixer Assembly (Panel Assembly, R

43、ear Case Assembly) (Time required: About 3 minutes) 8-1Remove the mixer assembly. (See procedure 6) 8-2Remove the eight (8) screws marked 340, and separate the panel assembly and rear case assembly from the mixer assembly. (Fig.7) (See the cautions below:) *When removing the panel assembly, take car

44、e not to damage the three connector assemblies (connector assembly A, B, C). (Fig.7) *When assembling the panel assembly, connect the three connector assemblies (connector assembly A, B, C) in alphabetical order (AB C). (Fig.7) Disassembly of Panel Assembly (Mixer Assembly) *Before removing the foll

45、owing parts (in procedure 9 to procedure 13), remove the mixer assembly (see procedure 6), rear case assembly (see procedure 8). 9.INPUT Circuit Board (Time required: About 6 minutes) 9-1Remove the eight (8) hexagonal nuts marked 190a and ten (10) screws marked 200 from the panel printing side. (Fig

46、.8) 9-2Remove the INPUT circuit board from the connectors CN21 and CN26 of the VR circuit board. (Fig.8) *The four (4) push buttons marked 170 and four (4) push spacers marked 180 are not parts of the INPUT circuit board. When replacing the INPUT circuit board, be sure to remove these parts and atta

47、ch them to the new INPUT circuit board. (Fig.9) STAGEPAS 300 10 Fig.8 ( 図8) 190a: Hexagonal Nut ( 特殊六角 ) M11.0 200:Bind Head Tapping Screw-B ( B ) 3.0X10 NI-BL (AAX61710) Panel assembly (Assy) 200 X 10 140 Volume knob (Red) (VR(赤) 130 Volume knob (White) X 6 (VR(白) CN21 CN26 190a X 8 INPUT VR 10.VR

48、（所要時間：約 10 分） 10-1INPUT 外。 （9 項参照） 10-2印刷面130VR（白）6個、 140 VR（赤）1 個外。 （図 8） 10-3160 5 本外、VR外。 （図 10） 以下各部品、 VR構成部品 。 VR交換際必取 外、新VR取付。 （図 11） 90:5 個 100B: VR（S） （白）1 個 110A: VR（S） （緑）12 個 120B: VR（S） （青）1 個 170 Push button () 180 Push spacer () INPUT 160 X 5 Panel assembly (Assy) VR Fig.9 (図 9) 160: Bind Head Screw ( 小 ) 3.0X8 CR3 (AAX61910) Fig.10 ( 図10) 10.VR Circuit Board (Time required: About 10 minutes) 10-1Remove the INPUT circuit board. (See procedure 9) 10-2Remove