雅马哈功放维修手册(含电路图)Yamaha-A1

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YAMAHA DSP-A1

The exclamation point within an equilateral triangle is intended to alert you to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.
IMPORTANT Please record the serial number of this unit in the space below. Model: Serial No.:
The serial number is located on the rear of the unit. Retain this Owner’s Manual in a safe place for future reference.
This product, when installed as indicated in the instructions contained in this manual, meets FCC requirements. Modifications not expressly approved by Yamaha may void your authority, granted by the FCC, to use the product.
10 Power Sources – The unit should be connected to a
power supply only of the type described in the operating instructions or as marked on the unit.

YAMAHA 功率放大器P4500 P3200 P1600 说明书

控制装置和功能
■ 前面板
2 3 4
A TEMP PROTECTION POWER 25 30 6 40
ON OFF
CLIP SIGNAL 15 10 25 30
B 15 10
20
20
6 40 –dB ∞ 0 3
3 ∞ 0
EEEngine
1
5 6
① 电源开关和指示器
这是主电源开关、按下放大器电源接通，再次按下断开电源、当放大器电源接通时，电源指示器点亮。
⑥ 音量控制
这些音量控制可以在－∞dB－0dB之间，分31个档次调节音平音量。通过保护控制来固定音量。在控制钮上装上安全盖，并且如下图所示，拧紧四个孔上的螺钉。
20 25 30 6 40 ∞ 0 3 –dB 40 ∞ 0 3 15 10 25 30 6 20 15 10
1
■ 后面板
1 2 3 4
–
+
+
–
–
+
ᔢࢅ5ˮ
ᔢࢅ5ˮ
ᔢࢅ9ˮ
ዯဉ໭ᇹᄻ
ዯဉ໭ᇹᄻ
并联方式的连接
SPEAKERS
CHANNEL B
BRIDGE
CHANNEL A
࿸ࢾᆐ݀ೊ
STEREO BRIDGE STEREO PARALLEL MAX. OUTPUT 450W/4Ω (STEREO) MAX. OUTPUT 900W/8Ω (BRIDGE)
INPUT
CHANNEL B G CHANNEL A G
(BRIDGE) (PARALLEL)
BRIDGE
SPEAKERS
CHANNEL B CHANNEL A
(STEREO) 4-8Ω/SP (BRIDGE) 8-16Ω/SP STEREO BRIDGE

ALA功放摩机

ALA功放摩机雅马哈公司的AI.A功放和天龙公司的无反馈双超线性功放被认为是“解决了甲类与乙类之争”的电路，电路不复杂、技术指标不错而得到众多发烧友及生产厂家的青睐。

本文为一台ONE牌A930台并机采用ALA技术，但表现在听感上较硬发紧，分析力不太好。

于是决定摩上一摩，下面便是摩机步骤： (1)从图6-19电路分析，信号通路存在两个为校正lc提供“悬浮供电”而设雅马哈公司的AI.A功放和天龙公司的无反馈双超线性功放被认为是“解决了甲类与乙类之争”的电路，电路不复杂、技术指标不错而得到众多发烧友及生产厂家的青睐。

本文为一台ONE牌A930台并机采用ALA技术，但表现在听感上较硬发紧，分析力不太好。

于是决定摩上一摩，下面便是摩机步骤：(1)从图6-19电路分析，信号通路存在两个为校正lc提供“悬浮供电”而设立的大电容cciii，ciis)，并且成为前级的容性负载而增加失真，这一失真不能被ALA电路所校正。

场效应管带容性负载的能力较强，因此首先用一对中功率管K214/J 77代替VT109、VT110(2:SA1145/2SC2275)，并在VD101、VD102支路中串人一个470n的多田微调电阻，调整它使VT109 VT110的lC为12～18mA（原机lc宴测为0.98mA），使其工作在甲类状态。

须注意的是，改动后要为VT109,VT110配上一副小型散热器。

(2)ALA校正回路的阻抗(R．。

7+R133)较高，而原机的推动管使用双极型晶体管，负载较重会影响校正效果，对信号通路也会带来较大衰减。

因此t照样用K214/J 7 7代替VT112、VT113(2SA1306/2SC3298)，使前级负载减轻、损耗变小，并能抑制有害的反向传输。

调节PR2使输出级(VT114、VT115)的IC增至90～130mA，这时VT114. VT115会有一些温升，只要不烫手便不必担心，倒是要密切注意VT112、VT113的管壳温度，如太高须换较大的散热器。

YAMAHA PW80 维修手册 2004说明书

Yamaha Pw80 Workshop Manual 2004DOWNLOAD HEREALL MODELS & REPAIRS ARE COVERED A-Z! THIS WORKSHOP SERVICE REPAIR MANUAL IS THE REAL DEAL! COVERS ALL REPAIRS A-Z, MECHANICAL & ELECTRICAL! TONS OF DETAILED PICTURES & DIAGRAMS INCLUDED! ALL PAGES ARE PRINTABLE, PRINT OFF ONLY WHAT YOU NEED! BUY FROM US WITH TOTAL CONFIDENCE! SUPER FAST DOWNLOAD DELIVERY ON ALL ORDERS! PROFESSIONAL QUALITY SERVICE & REPAIR MANUALS ALWAYS! USE IT AS MANY TIME AS YOU LIKE! THIS WORKSHOP MANUAL WILL NEVER TIME OUT OR EXPIRE! FAQ: Why should I purchase this Service Repair Workshop Manual? This manual is an easy layout format that covers all repair procedures in great detail. This manual will help you better understand all the parts & repair procedures on your vehicle. With the knowledge contained within this manual, you will easily be able to do your own servicing & repairs. FAQ: What models are covered in this manual? All models for the above stated years and all engine types are included. This Service Repair Workshop Manual is not generic, it is SPECIFIC to the above stated model. Its the same type of Manual that your localDealer/Mechanic would use. FAQ: What type of information is covered? Routine Maintenance, Tune-up Procedures, Specifications, Engine Removal / Installation, Cylinder Head / Valve Train, Engine Block, Engine Lubrication, Intake Manifold / Exhaust System, Cooling and Heating, Fuel and Emissions, Transaxle, Clutch, Manual Transmission, Automatic Transmission, Deferential, Driveshaft, Steering, Suspension, Brakes (including ABS), Body, Heater and Air Conditioning, Automatic Climate Control, Electrical (including SRS), Supplemental Restraint System (SRS), Engine Repair, Air Conditioning, Exhaust, Emissions Control, Ignition, Steering, Wiring Diagrams, Valve Timing Procedures, Chain & Gear Replacement, General Removal & Installation Instructions, Safety Precautions, Special Tools, Tensioner Adjustments, Tightening Torques, Timing Marks, Valve Timing Instructions, Tensioner Release & Reset Methods, Chain Routing & Sprocket/Gear Valve Timing Marks, ETC. FAQ: How long for delivery? Delivery on this item is instant once you have paid with your Credit/Debit/Paypal Account, there is no shipping involved, you will receive this manual right away! You Can Fix It Today! FAQ: How much money will I save? This manual will help you save money upwards into the thousands. Dont be scammed bymechanics charging you tons of money for a small job that you can do yourself using the information & knowledge contained on this manual. FAQ: Is this manual hard to use? No, not at all. If you can open up an email then you can use this manual, its that simple! This manual is in PDF format and will work on any PC/MAC computer using Microsoft Windows. 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功放电路原理与维修

精选ppt
20
5；４５５８D维修关键几点测量；
该集成块关键点测量主要有8脚供电， 3脚R声道输出和1脚R声道输出，及5脚L声道输入和7脚L声道输输出；
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21
6；４５５８D 检修方法；
①完全无声，检查8脚供电是否正常，电压正常。万用表Ｒ×1档黑表笔接地，红表笔触碰4558D输入端5脚或3脚，没有咔嚓声4558D损坏
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2）当触碰4558D的6脚有声音
，触碰音量电位器中心插头没有声音，检查电容c5是否开路，有声音检查音量电位器是否损坏，插头接触不良
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3 声音小；失真
声音小，失真故障也比较常见，也是功放最难修的故障，该故障不好查找。我们在修声音小，失真时，先把所有音量开到最大，然后用万用表 RX1档黑表笔接地，红表笔逐级触碰各输入端，看声音能否大一些，如果触碰声音大，说明后级正常。得向前级检查。
17
2： 4558D引脚作用
1脚: R声道放大信号输出(1) 2脚: R声道反相信号输入(1) 3脚:R声道信号输入(1) 4脚 :接地 5脚 :L声道同相信号输入(2) 6脚: L声道反相信号输入(2) ７脚；L声道放大信号输出(2) 8:Vcc 电源
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3;4558D 内部电路
该集成块集成块8脚外接供电， R 声道信号由6脚输入，，7脚输出。 L声道由2脚输入，1脚输出。 3脚５脚反相输入接地。 4脚接电源地。（反相输入的内部电路）
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4；4558D；外围电路；
4558D的8脚为电源供电脚， R 声道信号由R6，电位器 R7的中心抽头取出由Ｃ5耦合送入到4558D的3脚，放大后的音频信号由1脚输出，由C8 耦合后输出。L声道同样由5脚输入，7脚输出。4脚接电源负极2脚6脚接R L声道的反相信号输入。

ARCAM 雅骏 DiVA A75 AV功放维修电路图

The input pair (Q606,607,618,619,706,707,718,719) are in a Darlington configuration to lower input current offset which in turn will lower DC offset at the output, as the impedances seen on the input nodes are necessarily high for the wide bandwidth required.
Service Manual
A65/75
Issue 1.0
DiVA A65, A75 & P75 Plus Ampliﬁers
ARCAMຫໍສະໝຸດ Contents List
! Contents list ! Circuit description ! Service guide ! Circuit diagrams ! Component overlays ! Circuit board parts list ! General assembly parts list
The output stage is a simple bipolar darlington (Q614,615,714,715). However, the devices used are Darlington devices with integral diodes. This means the bias temperature compensation is part of the output device enabling smaller number of devices, no extra devices on the heatsink (vital for this mechanical layout) and more consistent temperature compensation of bias. Also the resistors are also integral, saving a large amount of PCB real estate and hand insertion cost, while also able to be used as bias set test points and protection sensing.

YAMAHA XM6150 4220 说明书

在桥接模式中，在一对通道中只有第一个通道的HPF开关有效。例如，A-B组的A通道，C-D组的C通道以及E-F组的E通道（只有XM6150）。
2 衰减器
这些控制用于减弱每一个通道，从-∞ dB到0dB输入信号。
在桥接模式中，在一对通道中只有第一个通道的衰减器有效。例如，A-B组的A通道，C-D组的C通道以及E-F组的 E通道（只有XM6150）。
通风 ............................................................8
支架安装 .....................................................8 安装EIA标准支架 .......................................8
76.2 88
4-C15 78
3 XLR输入
接线为针1-地线，针2-正极（+），针3-负极（-）。
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21
୻࢐
3
ದ
4 欧式连接器
这些平衡欧式连接器用于连接输入信号。
在桥接模式中，在一对通道中只有第一个通道的欧式连接器有效。例如，A-B组的A通道，C-D组的C通道以及E-F 组的E通道（只有XM6150）
目录
控制装置和功能 ...........................................4 前面板 ......................................................4 后面板 ......................................................5
5 通道对全通道的开关
此开关用于将通道A连接到全通道时提供的输入信号。

YAMAHA EMX5014C 说明书

POWERED MIXERPOWERED MIXER 使用说明书ZH发挥调音台的最佳性能第12～18页速成指南第7～11页2EMX5014C 使用说明书 The above warning is located on the rear of the unit.Explanation of Graphical SymbolsThe lightning ﬂash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’senclosure that may be of sufﬁcient magnitude to constitute a risk of electric shock to persons.The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating andmaintenance (servicing) instructions in the literature accompanying the product.IMPORTANT SAFETY INSTRUCTIONS1Read these instructions.2Keep these instructions.3Heed all warnings.4Follow all instructions.5Do not use this apparatus near water.6Clean only with dry cloth.7Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.8Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including ampliﬁers) that produce heat.9Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not ﬁt into your outlet, consult an electrician for replacement of the obsolete outlet.10Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.11Only use attachments/accessories speciﬁed by the manufacturer.12Use only with the cart, stand, tripod, bracket, or table speciﬁed by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.13Unplug this apparatus duringlightning storms or when unused for long periods of time.14Refer all servicing to qualiﬁed service personnel. Servicing is required when the apparatus has beendamaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has beenexposed to rain or moisture, does not operate normally, or has been dropped.(98-6500)WARNINGTO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APP ARA TUS TO RAIN OR MOISTURE.IMPORTANTPlease record the serial number of this unit in the space below.Model:Serial No.:The serial number is located on the bottom or rear of the unit.Retain this Owner’s Manual in a safe place for future reference.使用说明书 EMX5014C 3(5)-4请在操作使用前，首先仔细阅读下述内容* 请将本说明书存放在安全的地方，以便将来随时参阅。

雅马哈 AV 前置放大器连接说明书

Zh12Zh将功率放大器和低音炮（配有内置放大器）连接到本机，并将音箱连接到功率放大器。

1将本机的 PRE OUT 插孔连接到所有 11 个声道的功率放大器的主输入插孔（a 或 b ）。

进行非平衡连接时 (a )，请使用音频针口缆线（RCA 非平衡缆线）将本机的 PRE OUT (RCA) 插孔连接到放大器的主输入 (RCA) 插孔。

进行平衡连接时 (b )，请使用 XLR 平衡缆线将本机的 PRE OUT (XLR) 插孔连接到放大器的主输入 (XLR) 插孔。

2使用音频针口缆线将低音炮（配有内置放大器）连接到本机的 SUBWOOFER PRE OUT 1–2 插孔。

3将每个音箱连接到功率放大器上对应的音箱端子。

有关音箱连接的详情，请参见功率放大器和音箱的使用说明书。

•根据您的功率放大器，可能需要更改其设置，以便从本机接收的音频从连接到放大器的音箱发出。

•您可以将 2 个低音炮连接到本机，然后将它们分别置于房间的右/左两侧（或前/后两侧）。

在使用 2 个低音炮的情况下，将电源线插入交流墙壁电源插座后，请配置“低音炮配置”。

有关详情，请参见《使用说明书》。

•如果您具有支持触发器功能的 Y amaha 功率放大器（如 MX-A5000），则可通过系统连接在操作（如打开/关闭）本机的同时控制此功率放大器。

有关详情，请参见《使用说明书》。

2连接功率放大器、音箱和低音炮SUBWOOFERZh33连接外部装置（1将外部装置连接至本机。

a 使用 HDMI 缆线将 BD/DVD 播放机连接至本机。

如果 BD/DVD 播放机当前通过 HDMI 缆线直接连接到电视，则应将此缆线从电视断开，然后将其连接到本机。

b 使用其他 HDMI 缆线将电视连接至本机。

c 用数字光纤缆线或立体声针口缆线将电视连接至本机。

在本机上播放电视视频时需要此连接。

如果电视支持 ARC (Audio Return Channel)，则不需要此连接。

YAMAH MODUS F11 F01 说明书

3. NOTE: This product has been tested and found to comply with the requirements listed in FCC Regulations, Part 15 for Class “B” digital devices. Compliance with these requirements provides a reasonable level of assurance that your use of this product in a residential environment will not result in harmful interference with other electronic devices. This equipment generates/ uses radio frequencies and, if not installed and used according to the instructions found in the users manual, may cause interference harmful to the operation of
Model
Serial No.
Purchase Date
FCC INFORMATION (U.S.A.)
1. IMPORTANT NOTICE: DO NOT MODIFY THIS UNIT!
This product, when installed as indicated in the instructions contained in this manual, meets FCC requirements. Modiﬁcations not expressly approved by Yamaha may void your authority, granted by the FCC, to use the product.

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