AC4107A蓝牙音箱标准原理图 V1.2

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车载蓝牙MP3无线FM全频发射器大电流充电标准原理图方案

L3 1KB
C11 12P R1 100R
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SD1CMDB/PB1 SD1CLKB/PB2 AUX2L/PB6 AUX2R/PB3 ADC8/PB4 ADC9/PB5 VDDIO MIC/PA0 DACVSS VCOM DACVDD DACL
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功能说明： TF卡电路 1、调节音量大小 2、调发射频点 +3.3V 3、功能转换
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105 105 R2
R3 100R

蓝牙音响设计原理图参考

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AC4601C蓝牙点烟器标准原理图V1.7-(IO扫描按键)

C21 105
FM_MCLR
1K
C
LCD_S2 LCD_S3 LCD_S4 LCD_S5 LCD_S6 LCD_S7
说明： AGND和GND在PCB板上电源入口处需短接
AC3486_SOP14
R16 需贴近主控引脚放置
1 2 3 4 5 6
AVSS BT_RF AVDD28 AVSS AVDD33 LDO_IN LDOVSS PLLAVDD PLLAVSS PC15/MIC/AUX2R NC DACVSS
LED-1888(6PIN)
FM_DAT
R16
FM_OSC
VSS VG CAP1+ CAP1VSS VDD DATA CLK A0 /RES /CS
1 2 3 4 5 6 7 8 9 10 11
C7 C8
105 105
+3.3V
C15 NC/104 LCD_DATA LCD_CLK LCD_A0 LCD_RES LCD_CS
KEY1
带弹
PREV/V-/CHS1 CH/MODE S10
5
KEY3
KEY1
KEY3
CALL键短按接听/挂断电话, 点按两下回拨电话
C36 102
+
IR
CH键长按模式切换
MIC
BLUE LCD_S8 LCD_COM3 IR
红色
M1 MIC
D2
3
2
KEY2
CALL Hand on/Hand up S11 KEY3 CALL Hang up S12
PA10 ADC6/PA11 SPI1CLKA/ADC7/PA14 SPI1DOA/PA15 ADC11/PB5 VDDIO VSSIO SPI1CLKB/COM0/PB6 SPI1DOB/COM1/PB7 COM2/PB8 COM3/PB9 COM4/PB10

功放的说明书

说明书一、面板布置：1、本功放由功放、播放器、电平指示器、扬声器四个模块组成。

其中功放有放大音频信号的功能，可把播放器音频、外接音频、话筒音频信号放大，通过调节旋钮可改变信号的大小。

播放器有读取内存卡里的音频文件并转化成音频信号（另有收音机功能）的功能。

电平指示模块是通过计算音频信号，获取音频里音调的高低信号，再通过led灯显示出来，具有装饰的功能。

扬声器是把音频信号转化成声音信号的作用。

2、正前方：电平指示 1314⑥⑦⑧⑨⑩ 11 12①②③④⑤左声道右声道①电源指示灯、②音频输入、③音量旋钮、④话筒音量旋钮、⑤话筒输入、⑥播放器电源开关、⑦上一曲/音量-、⑧播放/暂停、⑨下一曲/音量+、⑩播放模式、11数据线插孔、12 usb插孔、13播放器显示屏、14 sd卡插孔（注：11、12、14插孔都是输入插孔，不能输出）3、正后方：变压器变压器线散热器遥控器电源线耳机插孔扬声器插头注意：1、使用前检查电源线和变压器线是否完好，外层绝缘皮是否有破损，若有破损则需要用电胶布粘住，防止皮肤接触而触电。

2、通电时最好不要触碰变压器和变压线。

3、使用时禁止触碰散热器、变压器，防止因温度过高而烫伤。

4、当使用耳机听音频时，只需把耳机插入耳机插孔，但要注意，在使用耳机之前要控制好音量，防止音量过大而损坏耳机。

一般操作是先把音量调为最小，插入耳机后再慢慢增大。

二、使用步骤：1、打开电源：在打开电源前先把音乐音量，话筒音量④调为最小，并确定自带播放器开关⑥处于关闭状态。

然后把电源线接电，则电源指示灯会亮①。

2、接音频：音频有两种，一种是外接音频输入②，另外一种是自带播放器输入，其优先级是外接音频输入高于自带播放器音频输入。

（1）外接音频输入需用一根3.5mm音频线与外界播放器连接，另外一端必须接到功放的外接“音频输入”②插孔，注意播放器的音量③应适当,否则将会烧坏功放芯片和损坏喇叭。

（2）自带播放器输入：首先把优盘或sd卡插入相应位置11、12、13，然后把播放器开关打开⑥，启动自带播放器。

课程设计单片机控制的收音机

五邑大学单片机课程设计题目：基于单片机的收音机设计院系信息工程学院专业电子信息工程(职教师资) 学号13071825 姓名骆子申学号13071826 姓名申春龙指导教师姜为民报告日期2014年12月一、概述收音机，是一种小型的无线电接收机。

主要用于收听无线电发射台，通常是民用广播电台发送的娱乐及资讯节目。

收音机的工作过程是：天线把空中的电磁场转化成电压信号，调谐电路选中所需频率的信号，检波器将高频信号还原成音频信号(即解调)，解调后得到的音频信号，再经过放大获得足够功率，推动扬声器发声。

本次设计利用STC89C52单片机控制收音机模块PL102BA-S（基于SI4730芯片），可以接收不同频率的FM电台信号。

作品使用LCD1602液晶屏显示，通过5个按键实现了调节频率和音量，存台和读台的功能。

图1 作品展示二、设计方案分析1.原理图分析1.1收音机模块PL102BA-S（基于SI4730芯片）图2 鞭状天线加上调频电路和AM铁氧体天线原理图收音部分选用了PL102BA-S收音机模块，它是最新开发生产的一片高性能调频/调幅（FM/AM ）双波段收音模块，采用Silicon LABS 的全数字COMS单晶片集成电路SI4730。

内置数字频率调谐和DSP解码器，支持数字音频输出及RDS 接收功能。

支持I2C及SPI总线控制模式，AM支持环状天线及铁氧体磁性棒状天线。

其具有接收灵敏度高、抗干扰能力强、外部元件少、体积小、低功耗、低噪声、低成本、使用简单等优点。

图3 PL102BA-S收音机模块电路接线图其中在：CLK(时钟脚)：接一个上拉电阻，因为SI4730使用了I2C通信接口。

DIO（数据脚）：由于SI4730和单片机电压不匹配，因此要串入一个限流电阻。

RST（复位脚）：为低电平有效，同理此处也要串入一个限流电阻。

FMI（天线脚）：需要串入一个104的瓷片电容，只让频率合适的信号通过。

ROT和LOT（左右声道输出脚）：各接了一个耦合电容，防止直流输出。

正负可调直流稳压电源设计

正负可调直流稳压电源设计正负可调直流稳压电源设计姓名：张平学号：141900143专业：电子信息工程指导老师：李继强学院：电气信息学院日期：2015年01月01日摘要在电子电路设计中，最离不开的就是电源。

不管是调试测试电路，还是驱动电路，这些都离不开电源的应用。

在本设计中采用5W，220V—12V的变压器来将220V电压降压。

用三端可调节正电压稳压器LM317和三端可调节负电压稳压器LM337形成正负电压生成电路。

正负可调直流稳压电源由电源变压器、整流电路、前级滤波电路、稳压电路和后级滤波电路共五部分组成。

设计的可调电源具有电压正负可调、电路简单、成本低廉的优点。

在电路中由于需要交流变直流，所以采用各种电容，运用电容充放电的原理来调整交流电到直流电。

关键词：可调电源电容滤波稳压AbstractedAdjustable DC regulated power supply is a DC power supply is often used in the real experiment, its main principle is divided into four parts, transformer, rectifier, filter, adjustable output. The four part is the title of one step one step, are indispensable. After the regulation and role of the four sector, will put the 220V AC sinusoidal into positive and negative adjustable DC power supply voltage regulator. To act with voltage of the chip LM317 and LM337. The two chip can lead in the middle bridge rectifier, voltage can be adjusted to achieve positive and negative.Key word:adjustable power source;Capacitance smoothing ;voltage stabilization ;目录摘要 (I)Abstracted.................................................................................................................... I I 目录 .. (III)第一章方案论证和比较 (1)1.1 设计任务 (1)1.2 设计方案与选择 (1)1.2.1 设计方案比较 (1)1.2.2 方案选择确定 (1)1.3 设计流程图 (2)1.4 方框图 (2)第二章设计原理与分析 (3)2.1 变压器的原理与分类 (3)2.1.1 变压器工作原理 (3)2.1.2 变压器分类 (3)2.2 桥式整流 (4)2.3.1 整流二极管 (4)2.3.1 整流桥 (5)3.3 滤波电路 (7)2.3.1 滤波电路的概念 (7)2.3.1 滤波电路的性能 (9)2.4 稳压及调节电路 (10)2.4.1 主流器件 (10)2.4.2 稳压与输出可调原理 (13)第三章电路设计 (14)3.1 变压与整流电路 (14)3.1.1 变压器的选择 (14)3.1.2 整流电路设计与二极管选择 (15)3.2 前级滤波电路设计 (16)3.3 稳压电路设计 (17)3.4 后级滤波电路设计 (18)3.5整体电路 (19)第四章调试方案与测试结果 (20)4.1 变压器降压检测 (20)4.2 整流桥整流检测 (21)4.3 滤波电路检测 (22)4.4 稳压可调电路检测 (24)4.4.1 稳压波形检测 (24)4.4.2 电压调节检测 (25)总结 (27)附录一 (28)第一章方案论证和比较1.1 设计任务设计并制作一个正负可调直流稳压电源，实现电压从正1.25V—正16.97V 可调和电压从负1.25V—负16.97V 可调；最大电流不超过0.5A。

AC6084A七段数码管音箱方案标准原理图V1.0

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PA1/MIC/ADC1 PA0/SDPG/ADC0 AGND VCOM QQ:1207435600 DACL DACR/PB7/AUX1R/ADC9 PB6/AUX1L/ADC8 PB4/ADC7 VSSIO LDOIN/PB5 VBAT VDDIO
C/S C/S C/S C/S C/S C/S C/S
LED1 LED
7脚数码管IO请不要随意更换
IRDA
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S1 P/P/Power S2 PREV/VS3 NEXT/V+ S4 Mode
R14 LINE_IN 100K
ADKEY、LED、IR
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Hale Waihona Puke R2110K
LINEIN Jack
单独布线连接至芯片AGND 尽量与音频信号布线贴近，减少环路面积
VDDIO
R3 10K
MUTE
必须连接至主控芯片的AGND 尽量与DAC 布线贴近，减少环路面积
SD0CLKC/MICBIAS/PA2 ADC2/SD0DATC/AUX0L/PA3 ADC3/SD0CMDC/AUX0R/PA4
ADC13/USBDP ADC14/USBDM
ADC10/PC2 SPI1DIB/SD0DATA/PC3 ADC11/SPI1CLKB/SD0CMDA/PC4 ADC12/SPI1DOB/SD0CLKA/PC5 SPI1CLKA/SD0CLKD/PB0 ADC5/SPI1DOA/SD0CMDD/PB2/PB1

JL杰理蓝牙音箱AC925F标准原理图标准软件_V1

晶振选型：
封装：兼容3225，M49S，HC49S等封装要求：稳定性、一致性要好，
频偏偏差：±10PPM以内电容：晶振匹配电容位置请预留
Y1 OSCI
24MHZ OSCO
BT_ANT
4 3
SDCLK SDCMD SDDAT MIC
C14 105 C6 105 C7 105
U1
B_LED
1 PC5/SD1CLKA
MCU D
C
1
2
设计注意事项： 1、主控所有电源的退耦电容必须靠近芯片放置，
退耦电容的回路地必须最短回到该电源地. 2、蓝牙匹配电路参数以调试结果为准 3、对FM要求比较高的客户，请预留FM放大电路，
灵敏度可提升2dBu以上。FM信号线铺地,
间距至少0. 6MM以上。qq:298391364
4、为保证产品的安全可靠性，电池必须用带保护板的电池。
OSCO OSCI GND
BT_RF BTAVDD AD_KEY MUTE RTCVDD VMCU AUXL AUXR
做耳机使用时接耳机喇叭共用负极
C15 C10 105
2P7
蓝牙天线接法适用倒F型天线其它的天线要加增益网络
C8 105 C9 105
B_LED R8 1K
播放指示灯
BLED
3
4
音频电路
要音量记忆，开机时是上一次关机时的音量
R9 10K
U2 HX8018
MUTE
1 SD
8 VOP
SPK
C5
105 2
7
1
BYP
GND
+
R3
NC 3
MODE
6 VDD
VMCU

JBL CS3412A 扬声器系列产品说明书

感谢您购买产品！请仔细阅读本手册，它将帮助你妥善设置并运行您的系统，使其发挥卓越的性能。

并保留这些说明以供日后参照。

警告：为了降低火灾与电击的风险，请不要将产品暴露在雨中或潮湿环境中。

警告：为了降低电击的风险，非专业人士请勿擅自拆卸该系统。

仅供专业人士操作。

等边三角形中的闪电标记，用以警示用户该部件为非绝缘体，系统内部存在着电压危险，电压。

可能足以引起触电。

可能足以引起触电如系统标有带惊叹号的等边三角形，则是为提示用户严格遵守本用户指南中的操作与维护规定。

注意：请勿对系统或附件作擅自的改装。

未经授权擅自改装将造成安全隐患。

警告：燃不得将明火源(如点的蜡烛)放在器材上面。

1. 请先阅读本说明。

2. 保留这些说明以供日后参照。

3. 注意所有警告信息。

4. 遵守各项操作指示。

5. 不要在雨水中或潮湿环境中使用本产品。

6. 不要将产品靠近热源安装，例如暖气管、加热器、火炉或其它能产生热量的装置（包括功放机）。

7. 不要破坏极性或接地插头的安全性设置。

如果提供的插头不能插入插座，则应当请专业人员更换插座。

8. 保护好电源线和信号线，不要在上面踩踏或拧在一起（尤其是插头插座及穿出机体以外的部分）。

9. 使用厂商规定及符合当地安全标准的附件。

10.雷电或长时间不使用时请断电以防止损坏产品。

12. 不要让物体或液体落入产品内——它们可能引起火灾或触电。

13. 请注意产品外罩上的相关安全标志。

. 仅与厂商指定或与电器一同售出的推车、架子、三脚架、支架或桌子一起使用。

推动小车/电器时，应谨防翻倒。

11注意事项产品的安装调试须由专业人士操作。

在使用非本厂规定的吊装件时，要保证结构的强度并符合当地的安全规范。

警告：1扬声器及扬声器系统的产品有限保修期为自正式购买日起的3年。

由于用户不合理的应用而导致音圈烧毁或纸盆损坏等故障，不包含于产品保修项目。

产品吊附件(包括音箱装配五金件和吊挂配件)的有限保修期为自正式购买日起的1年。

AX2227 CW6639蓝牙原理图

R50 100K/NC
C12
C13
芯片
GND
22nF/NC VDD33关闭时，LDO disable。
standby功耗0.01uA。 GND
蓝牙可以用外部LDO或VDDIO供电， GND 用外部LDO-3.3V供电，蓝牙工作会更稳定，
建议使用独立LDO供电。
2.2uF/NC GND
BT_TX BT_RX BT_WAKEUP
TF
USB_Host
Micro SD
6
USB2
5V DM DP
ID GND
6
+5V 1 2 3 4 5
6
6
MINI USB
MINI USB可用于充电 GND 实际样机请不要把USB数据线连接到MINI座会导致插入MINIUSB线时无法读取U盘
R57 20K SEG1/DC_DET
R45 30K
D3 R55
AX2227_LQFP48
AGND
VDDHP和VDDDAC电容改为10uF，可以改善通话效果和提高DAC信噪比。
13 14 15 16 17 18 19 20 21 22 23 24
P03/VB P02 P01 P00 P14 P33 P04 P05 P06 P07/VPP P16 P17
P15 IRTWKO IRTOSCO IRTOSCI VDDIRT
C8 NC Y2
32.768K C10 NC
GND VBAT
R2 20K
C26
105
GND
使用低功耗模式，需要焊接R2与C26。软硬开关机模式，不使用RTC功能，可不焊接R2与C26。
4
VDDIO
R11 100K

JVC音响UX-H30电路原理图

JVC⾳响UX-H30电路原理图SERVICE MANUALCOPYRIGHT ? 2003 VICTOR COMPANY OF JAPAN, LIMITEDNo.MB0242003/8MICRO COMPONENT SYSTEMUX-H30TABLE OF CONTENTS1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-63DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-74ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-175TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21 SPECIFICATIONAmplifier Output Power20 W (10 W + 10 W) at 4 ? (10% THD)Audio input sensitivity/Impedance (at 1 kHz)AUX500 mV/48.75 k?Speakers/Impedance 4 ?Tuner FM tuning range87.50 MHz - 108.00 MHzAM tuning range AM 10 kHz intervals530 kHz - 1 710 kHzAM 9 kHz intervals531 kHz - 1 710 kHzCD player Dynamic range85 dBSignal-to-noise ratio90 dBWow and flutter ImmeasurableCassette deck Frequency response Normal (type I)50 Hz - 15 000 HzWow and flutter0.15% (WRMS)Speaker Speaker units Full range8.0 cm cone × 1Impedance 4 ?Dimensions (approx.)135 mm × 203 mm × 190 mm (W/H/D)Mass (approx.) 1.7 kg eachGeneral Power requirement AC IN110 V/ 127 V/ 230 V ,adjustable with the voltageselector,50 Hz/ 60 HzDC IN12 V, 4 APower consumption35 W (at operation)3.0 W (on standby)Dimensions (approx.)412 mm × 208 mm × 275 mm (W/H/D)Mass (approx.) 6.5 kg1-2 (No.MB024)SECTION 1PRECAUTION1.1Safety Precautions(1)This design of this product contains special hardware andmany circuits and components specially for safety purpos-es. For continued protection, no changes should be madeto the original design unless authorized in writing by themanufacturer. Replacement parts must be identical tothose used in the original circuits. Services should be per-formed by qualified personnel only.(2)Alterations of the design or circuitry of the product shouldnot be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom.(3)Many electrical and mechanical parts in the products havespecial safety-related characteristics. These characteris-tics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by us-ing replacement components rated for higher voltage, watt-age, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Ser-vice Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety charac-teristics as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or other hazards.(4)The leads in the products are routed and dressed with ties,clamps, tubings, barriers and the like to be separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after reassem-bling.(5)Leakage shock hazard testingAfter reassembling the product, always perform an isola-tion check on the exposed metal parts of the product (an-tenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.Do not use a line isolation transformer during this check.Plug the AC line cord directly into the AC outlet. Using a "Leakage Current Tester", measure the leakage current from each exposed metal parts of the cabinet, particular-ly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage cur-rent must not exceed 0.5mA AC (r.m.s.).Alternate check methodPlug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000?per volt or more sensitivity in the following manner. Connect a 1,500? 10W resistor paralleled by a 0.15µF AC-type capacitor between an ex-posed metal part and a known good earth ground. Measure the AC voltage across the resistor with the AC voltmeter.Move the resistor connection to each exposed metalpart, particularly any exposed metal part having a returnpath to the chassis, and measure the AC voltage acrossthe resistor. Now, reverse the plug in the AC outlet andrepeat each measurement. Voltage measured any mustnot exceed 0.75 V AC (r.m.s.). This corresponds to 0.5mA AC (r.m.s.).1.2Warning(1)This equipment has been designed and manufactured tomeet international safety standards.(2)It is the legal responsibility of the repairer to ensure thatthese safety standards are maintained.(3)Repairs must be made in accordance with the relevantsafety standards.(4)It is essential that safety critical components are replacedby approved parts.(5)If mains voltage selector is provided, check setting for localvoltage.1.3CautionBurrs formed during molding may be left over on some parts of the chassis.Therefore, pay attention to such burrs in the case of pre-forming repair of this system.1.4Critical parts for safetyIn regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the " " mark nearby are critical for safety. When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer.(This regulation dose not Except the J and C version)(No.MB024)1-31.5Preventing static electricityElectrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.1.5.1 Grounding to prevent damage by static electricityStatic electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.Be careful to use proper grounding in the area where repairs are being performed.(1)Ground the workbenchGround the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optical pickup) on it.(2)Ground yourselfUse an anti-static wrist strap to release any static electricity built up in your body.(3)In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition.(Refer to the text.)Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easilydestroy the laser diode.1.6Handling the traverse unit (optical pickup)(1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.(2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to thereplacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too longa time when attaching it to the connector.(3) Handle the flexible cable carefully as it may break when subjected to strong force.(4)I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.1.7Attention when traverse unit is decomposed*Please refer to "Disassembly method" in the text for the CD pickup unit.Apply solder to the short land sections before the flexible wire is disconnected from the connector CN601 on the CD servo board.(If the flexible wire is disconnected without applying solder, the CD pickup may be destroyed by static electricity.)In the assembly, be sure to remove solder from the short land sections after connecting the flexible wire.1-4 (No.MB024)1.8Important for laser products(No.MB024)1-5SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. 1-6 (No.MB024) SECTION 3DISASSEMBLY 3.1Main body3.1.1Removing the rear panel(See Fig.1,2)(1)From behind the body, remove the nine screws A attach-ing the rear panel.(2)Turing the body upside down, remove the two screws B at-taching the rear panel, and remove.3.1.2Removning the side panel (L) and (R)(See Fig.2~5)Prior to performing the following procedure, remove the rear panel.(1)Turning the body upside down, remove the two screws C attaching the front panel assembly.(2)Turning the body initial position, open the CD door while pressing the upper OPEN button.(3)Moving the side panel (L) in the arrow direction, remove the panel from the left side of the body.(4)Moving the side panel (R) in the arrow direction, removethe panel from the right side of the body.(No.MB024)1-73.1.3Removing the CD player assemblyPrior to performing the following procedure, remove the rear panel and the left and right side panels.(1)Disconnect the card wires from the two connectors CN603and CN604 on the CD servo control board.(2)Remove the two screws D attaching the front panel as-sembly on the both sides.(3)Release the two joints a on the both sides of the front pan-el assembly.(4)Move the CD player assembly in the direction of the arrow.1-8 (No.MB024)3.1.4Removing the power amplifier board and heat sink(See Fig.8~10)Prior to performing the following procedure, remove the rear panel, the left and right side panels, and the CD player assem-bly.(1)Remove the five screws E and F attaching the heat sink.(2)Disconnect the wire from connector CN901 on the powersupply board.(3)Disconnect the card wire from connector CN305 on thepower amplifier board.(4)Remove the screw G attaching the power amplifier board.(5)Disconnect the connector CN301 on the power amplifierboard, and release the two joints b .REFERENCE:Remove the screw F , then power amplifier board can be re-moved without removing heat sink.3.1.5Removing the tuner board(See Fig.11)Prior to performing the following procedure, remove the rearpanel, the left and right side panels, and the CD player assem-bly.(1)Remove the screw H attaching the tuner board from theright side of the body.(2)Disconnect the card wire from the connector CN1 on thetuner board.(3)Release the joint c , and remove the tuner board backward.(No.MB024)1-93.1.6Removing the front panel assembly(See Fig.12,13)Prior to performing the following procedure, remove the rear Array panel the left and right side panels, the CD player assembly,the power amplifier board.(1)Disconnect the card wire from the connector CN714 on theLCD system CPU board.(2)Release the joint d on the bottom of the front panel as-sembly using a screwdriver, and remove the front panel as-sembly toward the front.3.1.7Remove the power transformer and power supply board(See Fig.14,15)Prior to performing the following procedure, remove the rear Array panel, the left and right side panels, the CD player assembly,the power amplifier board and the tuner board.(1)Remove the screw I attaching the jack holder and releasejoint e , and then remove jack holder.(2)Remove the four screws J attaching the power transformerand power supply board.1-10 (No.MB024)3.1.8Remove the cassette mechanism assemblyPrior to performing the following procedure, remove the front panel assembly.(1)Disconnect the card wire from the connector CN713 on the LCD system CPU board.(2)Remove the four screws K and L attaching the cassette mechanism assembly, and remove.(No.MB024)1-113.1.9Remove the LCD system CPU board(1)Disconnect the wire from the connector CN716 on the LCDsystem CPU board.(2)Release the two joints f and pull out the LCD system CPUboard.3.1.10Removing the operating switch board(See Fig.19,20)Prior to performing the following procedure, remove the front Array panel assembly, the cassette mechanism assembly and theLCD system CPU board.(1)Remove the two screws M attaching the operating switchbutton.(2)Remove the two screws N attaching the operating switchboard, and remove.1-12 (No.MB024)3.2Cassette mechanism assembly3.2.1Removing the Play/Record & Clear head(1)While moving the trigger arm on the right side of the head mount in the direction of the arrow, turn the flywheel R counterclockwise until the head mount comes ahead and clicks.(2)The head turns counterclockwise as you turn the flywheel R counterclockwise (See Fig.2 and 3).(3)Disconnect the flexible wire from connector CN31 on the head amplifier & mechanism control board.(4)Remove the spring from the back of the head.(5)Loosen the azimuth screw for reversing attaching the head.(6)Remove the head on the front side of the head mount.(No.MB024)1-133.2.2Removing the head amplifier & mechanism control board(See Fig.4)(1)Turn over the cassette mechanism assembly and removethe three screws A attaching the head amplifier & mecha-nism control board.(2)Disconnect the flexible wire from connector CN31 on thehead amplifier & mechanism control board.(3)Disconnect connector CN32 of the head amplifier & mech-anism control board from connector CN1 on the reel pulse board.REFERENCE: If necessary, unsolder the 4-pin wire soldered to the main motor.3.2.3Removing the main motor(See Fig.4~7)(1)Remove the two screws B .(2)Half raise the motor and remove the capstan belt from themotor pulley.ATTENTION:Be careful to keep the capstan belt from grease. When reas-sembling, refer to Fig.6 and 7 for attaching the capstan belt.1-14 (No.MB024)3.2.4Removing the flywheelPrior to performing the following procedure, remove the head amplifier & mechanism control board and the main motor as-sembly.(1)From the front side of the cassette mechanism, remove the slit washers attaching the capstan shaft L and R. Pull outthe flywheels backward.3.2.5Removing the reel pulse board and solenoid(See Fig.10)Prior to performing the following procedure, remove the head amplifier & mechanism control board.(1)Remove the screw C.(2)Release the tab a, b, c, d and e retaining the reel pulse board.(3)Release the tab f and g attaching the solenoid on the reel pulse board.(4)The reel pulse board and the solenoid come off.(No.MB024)1-153.2.6Reattaching the Play/ Record & Clear head(See Fig.11~13)(1)Reattaching the head mount assembly.a)Change front of the direction cover of the headmount assembly to the left (Turn the head forward).b)Fit the bosses O', P', Q', U' and V' on the head mountassembly to the holes P and V, the slots O, U and Qof the mechanism sub assembly (See Fig.11 to 13).CAUTION:To remove the head mount assembly, turn the directioncover to the left to disengage the gear. If the gear can notbe disengaged easily, push up the boss Q' slightly andraise the rear side of the head mounts slightly to returnthe direction lever to the reversing side.(2)Tighten the azimuth screw for reversing.(3)Reattach the spring from the back of the Play/ Record &Clear head.(4)Connect the flexible wire to connector CN31 on the headamplifier & mechanism control board.1-16 (No.MB024)SECTION 4ADJUSTMENT 4.1Measurement Instruments Required for Adjustment(1)Low frequency oscillatorThis oscillator should have a capacity to output 0dBs to 600? at an oscillation frequency of 50Hz-20kHz.(2)Attenuator impedance : 600?(3)Electronic voltmeter(4)Distortion meter(5)Frequency counter(6)Wow & flutter meter(7)Test tapeVT703L : Head azimuthVT712 : Tape speed and running unevenness (3kHz)VT724 : Reference level (1kHz)(8)Blank tapeTYPE l : AC-225TYPE ll : AC-514(9)Torque gauge : For play and back tensionFWD(TW2111A), REV(TW2121a) and FF/REW(TW2231A) (10)Test disc: CTS-1000 4.2Measurement conditons4.2.1Radio Input signal 4.2.2Tuner section4.2.3Standard measurement position of volume Precautions for measurement (1)Apply 30pF and 33k? to the IF sweeper output side and0.082µ F and 100k? in series to the sweeper input side.(2)The IF sweeper output level should be made as low aspossible within the adjustable range.(3)Since the IF sweeper is a fixed device, there is no needto adjust this sweeper.(4)Since a ceramic oscillator is used, there is no need toperform any MIX adjustment.(5)Since a fixed coil is used, there is no need to adjust theFM tracking.(6)The input and output earth systems are separated. Incase of simultaneously measuring the voltage in both ofthe input and output systems with an electronic voltmeterfor two channels, therefore, the earth should be connect-ed particularly carefully.(7)In the case of BTL connection amp., the minus terminalof speaker is not for earthing. Therefore, be sure not toconnect any other earth terminal to this terminal. Thissystem is of an BTL system.(8)For connecting a dummy resistor when measuring theoutput, use the wire with a greater code size.(9)Whenever any mixed tape is used, use the band pass fil-ter (DV-12).Power supply voltage AC 110V/127V/230Vadjustable with the voltage selector,50Hz/60HzReference output Speaker : 0.775V/4?Headphone : 0.077V/32?Reference frequency and input level1kHz, AUX : -8dBs Measurement output terminal at Speaker J3002 Load resistance4? AM frequency400HzAM modulation30%FM frequency400HzFM frequency deviation22.5kHz Voltage applied to tuner+B : DC5.7VVT : DC 12VReference measurement output26.1mV(0.28V)/3?Input positions AM : Standard loop antennaFM : TP1 (hot) and TP2 (GND)Function switch to TapeBeat cut switch to CutSuper Bass/Active hyper Bass to OFFBass Treble to Center Adjustment of main volume to reference output VOL : 0.775V(No.MB024)1-174.3Cassette mechanism adjustment1-18 (No.MB024)4.3.1Mechanism sectionItem Condition Measurement method Ref. value Adjustment position Head azimuth Test tape:VT703L (8kHz)Output terminal:Speaker out (1)Playback the test tape VT703L (8kHz).(2)Adjust to maximum output level by azi-muth adjustment screw for forward sideand reverse side.(3)This adjustment is adjust by adjustmentscrew of forward side and adjustmentscrew of reverse side.Maximum output Only adjustat changedheadTape speed Test tap:VT712 (3kHz)Output terminal:Speaker out or Headphone out Playback the test tape VT712 (3kHz) at end of forward side,adjust to 2,940~3,90Hz indicationof frequency counter by VR37.2,940 ~ 3,090Hz VR37Item Condition Measurement method Ref. value Adjustment positionTape speed diviation at FWD/ REV Test tape: VT712 (3kHz)Output terminal:Speaker out or Headphone outPlayback the test tape VT712 (3kHz) at end offorward and reverse, tape speed deviationshould be less than 6.0Hz.Leass than6.0HzVR31Wow & Flutter Test tape: VT712 (3kHz)Output terminal:Speaker out or Headphone out Playback the test tape VT712 (3kHz) at start of forward and reverse, Wow & Flutter are shouldbe less than 0.25%(WRMS).Less than 0.25%(WRMS)(No.MB024)1-19。

LG PN7 便携式蓝牙音箱简易使用说明书

y电源插头作为断开电源的装置，万一发生紧急情况，电源插头必须保证可
以随时断开。

y要清洁设备，请使用柔软的干布。

如果表面非常脏，请用温和的清洁剂
溶液蘸湿的软布轻轻擦拭。

请勿使用
酒精、汽油或稀释剂等强溶剂，否则
可能会损坏装置表面。

y请勿在装置附近使用挥发性液体，例如杀虫喷雾剂。

强压擦拭可能会损坏表面。

请勿让橡胶或塑料产品长时间接触本装置。

y请勿将本机放在车辆的气囊上面。

它会在气囊展开时造成伤害。

在车辆
中使用本机时请将其固定。

y在驾车过程中不要使用免提功能。

y不要将设备置于不稳定的地方，如高货架上。

因为声音引起的振动可能会
使设备掉下来。

y请勿在本产品周围使用高压产品。

（例如，电苍蝇拍）本产品可能因电击而发生故障。

小心：在湿度较低的环境中使用本产品时y它在低湿度的环境中可能会导致静电。

y建议在触摸任何导电的金属物体后使用本产品。

注意：有关产品标识和供应额定值等安全标记信息，请参阅产品底部或其他表面上的主标签。

请配套使用已获CCC证书并符合相关标准的电源适配器。

7。

随身听相关指南

仅以此文献给随身听爱好者随身听指南2002年12月作者：公鸡先生说明：本文全部摘自网上，转载需注明原作者关于现在的CD随身听音质不如老产品的一点感想 (5)老机王VS新机王, 老话再提: D-777 VS D-EJ01 (5)哪里可以找到D777的资料？ (6)sony 经典的顶级 WLAKMAN ：WM-EX1、3、5、7、9 、20 (7):!!!!!!!!!!!!!!来看！！！！！！！！！！！！ (10)不比不知道！KSC35真让我。

(12)听了拜亚动力431后，我一直引以为豪的sony888被打的没影了。

(12)我在这里看了好几天贴子，发现对我自己选购耳机一点帮助也没有，越看越晕！！！！ (12)koss ksc35 和 sony mdr-v300 (13)耳机里之三大真理 (13)其貌不扬的panasonic一脚踩扁一个777esp版（d-e900） (16)随身听耳机的秘密（转贴）大家看看就好：） (20)谈随身听 (22)贴一篇吹捧D-303的文章！ (26)CD walkman的误区！ (26)谈谈我对这里的一点看法 (27)关于随身听，功率，音质 (28)关于对许多人对耳机的看法的看法 (28)随身听的发烧耳机配置综述（米饭在清华BBS上扫盲的） (28)为什么要买耳机（转贴）！ (29)妙不可言的耳机 (36)前天买了G73，有惊无险 (37)漫谈随身听收藏。

初次尝试写这类文章，收藏也不是很多，文章疏漏肯定很多，欢迎拍砖。

(38)再谈303和555！ (40)继续讨论741耳塞的音质问题——741和848/838的比较 (40)！！！！！火星撞地球！！！！！恐怖的老机对决！！！！！什么才是最强？！？！？ (41)D150 、D303、D777、D335、XPS900等机器的试听感受 (42)极品对极品，顶级对顶级！ 75 对 7 (43)SX75使用记 (44)我的看法想法（不要删！！！） (45)CT570与CT780音质的比较 (45)请问松下S450CD随身听怎么样 (46)Panasonic的sl-sx510如何？有熟悉的兄弟说说看 (47)向对日产耳塞持有偏见的朋友进一言 (47)非主流民用级随身听耳机选购指南 (49)公认超强低音大比拼 (52)完整版主流MD随身听耳塞搭配 (54)常见的随身听音效简介 (57)AIWA极品耳机HP—V743、HP—J9完全对比报告 (58)耳机名器榜：心动耳机TOP10推荐 (59)浅谈耳机购买要点分析 (63)随身听耳机导购指南（上） (64)随身听耳机导购指南（中） (66)随身听耳机导购指南（下） (69)奸商的小秘密耳机真假浅谈 (70)数码随身听商家不正当谋利手段大揭露 (71)市面常见索尼耳机选购入门(上) (73)市面常见索尼耳机选购入门(下) (75)SONY EJ955 印象 (76)SONY常见耳塞入门 (77)随身听的新趋势是MP3还是MP3-CD (78)十五款常见内耳式耳机试听感受 (80)海印小行情！ (81)国产随身听离我们有多远 (82)随身听：迷雾重重说进口 (84)CD随身听辨假购机攻略 (86)论行货水货随身听选购 (88)商场现形记 (90)选购一副适合自己的随身听耳塞 (91)随身听耳机的秘密 (97)教你几招----细选一副好耳机 (98)购机“五法” (99)discman大比拼 (105)鉴别随身听四法 (109)随身听的选择 (110)耳听为凭，什么才是好声 (112)怎样鉴别进口随身听的产地和品质 (113)1992——2000年AIWA耳塞全记录 (116)今天真爽啊,逛百脑汇淘到了我一直寻觅已久的V553 (121)AIWA V553没有传说中的那么好！！！ (121)借尸还魂！让AIWIA V553起死回生！！！ (122)少量爱华HP-V543到货！ (124)谈谈耳机的声场再现 (125)真假爱华HP-V553耳机大揭秘 (126)肖先生（原创工程师）谈CD机1BT与多BT（摘录） (129)最终还是决定卖了，老机+耳塞。

九阳电磁灶JYC-19BE5(新)维修作业指导书(1.0)20071206C

扇不转动。
入关机状态
数码管和 LED 显示相应工作信息，风扇开始转动。 1.在工作状态下，按【开/关】键进入待机状态
功能执行完毕,功率灯保持常亮,蜂鸣器报警 10 声 2.在工作状态下,按其它功能键进入选定功能工作
并自动返回关机状态。
状态
3. 功率温度分档：（温度和功率无对应关系）
功率：1900W 5 个 LED 9 段功率温度显示
单击返回
2. 各个状态界定及显示操作：
状态分类上电状态关机状态
待机状态
工作状态
状态描述
状态转换(当状态转换时蜂鸣器响 1 声)
蜂鸣器长鸣一声(1S)，所有指示灯和数码管亮 1 1 秒后自动转入关机状态
秒,然后熄灭。
所有指示灯和数码管不亮，“开态
图5单击返回九阳股份有限公司技术支持及质量推进部21单击返回九阳股份有限公司技术支持及质量推进部单击返回九阳股份有限公司技术支持及质量推进部21bom整机配件类别物料编码物料名称规格材料台用量个103179电磁炉jyc19be5新20320540电磁线盘18圈2420320424电源线210mm10a工具插头有卡位黑色螺丝固定12m20320812电风扇dc18v116弯叶防油污20321295显示板19be5x20321367主控板jycp19tk20321407热敏电阻组件100k39901硅胶垫硅胶套管塑料压片高温线带2pin插头防干烧用热敏电阻组件20321408热敏电阻组件100k1硅胶支架20370201组合螺钉m48带平垫弹垫锁线盘引线2电源线220370301组合自攻螺钉st310带平垫锁风扇20370401大头自攻螺钉st414锁线盘3散热片120370501盘头自攻螺钉st412锁上下盖20370602自攻螺钉st38锁显示板3主控板4热敏电阻组件120360405橡胶支脚125h9黑色20363325显示板防尘盖pet吸塑19be5x20360598操作面膜19be5x20360102电源线扎线黑色16cm电源线自带定期采购20363202不干胶贴纸90mm15mm电源线标识条不用时请拔下电源插头20363205不干胶贴纸电磁灶rohs标签20360354国产陶瓷板250250黑色金色印花c20341376电磁炉发泡件19be5x20341406电磁炉塑料袋410550pe印警示语rohs标识20340790说明书19be5x20341504说明书塑料袋210140pe自封袋印警示语rohs标识20340606合格证5536公司通用20340501保修卡通用单击返回九阳股份有限公司技术支持及质量推进部21硅酮胶黑色通用10ml台413101导热硅脂通用15g台410114九阳封箱透明有字60mm100m阳小家电4m箱胶带新logo九410102胶带36透明无字8cm箱410115胶带透明无字10mm128m26cm台普通6ml台

比亚迪速锐音响系统维修手册

USB 或 AUX 口不能播放音乐
音响系统
AV–9
故障症状表
提示：使用下表可帮助诊断故障原因。以递减的顺序表示故障原因的可能性。按顺序检查每个可疑部位。必要时维修或更换有故障的零件或进行调整。
可疑部位主机电源电路 CD 主机方向盘开关 CD 主机线束扬声器 CD 主机线束扬声器 CD 主机 CD 主机线束扬声器电路 CD 主机灯光系统（见灯光系统） CD 主机线束转至“收音机无法收到信号（或信号很差）” 光盘 CD 主机线束转至“播放光盘跳碟” CD 主机 CD 主机（显示器后接插件是否接好）中控面板线束 USB&AUX 电路 CD 主机线束
(2) 多路干涉多路干涉是由于车辆收到同一个发射源的两个信号，一个是从发射源直接接收的，一个是被建筑物，高山或其他障碍物反射回来的。
(3) 信号衰减信号衰弱是由于在发射源与接收收音机之间有巨大障碍物（建筑物，高山等）将部分信号反射偏离，导致信号波能减少，高频信号更容易被阻挡，低频信号通过性较好。
AV
(c) 光盘清洗提示：不要用镜头清洗液清洗，可能对主机造成影响。
（1）如果灰尘在光盘表面上，请用柔软的干布如眼镜布从光盘中心沿径向向外擦拭。
提示：
用伤。手按 CD 或用硬布擦拭 CD 可能造成 CD 表面划
2. 收音机描述
(a) 收音频段收音机波段:
AM ： 522KHz~1620KHz FM：87.5MHz~108MHz
1 车辆送入维修车间
下一步
音响系统
如何进行故障排除
提示：
使用以下程序对音响系统进行故障排除。
使用智能检测仪。
AV–7
2 客户故障分析检查和症状检查

AC6951C蓝牙音箱方案标准原理图V1.1

2、内置锂电的方案，RTCVDD可不接纽扣电池，也支持走时
C
3、无时钟的方案，32K晶振和RTCVDD引脚悬空
C106 105 C107 105 C108 105
BT_ANT
C104 15P C105 15P
Y101
32.768K
C109
SD_DAT VMCU
+3.3V RTCVDD
KEY0
S403 KEY1
PREV/V-/CH-
KEY0
S408 Mode
KEY1
S409 TALK
S411 KEY_PWR
POWER ON
软开关机键
SD401
B_LED
D101 BLUE
SD_PWR SD_CMD
C403 105
SD_LK
SD_DAT R413
9 1 2 3 4 5 6 7 8
DACVSS HPVDD
SEG20/MIC/PC6 AUX0L/SEG21/SEG0/MIC_BIAS/PA0/PC7
ADC0/AUX0R/SEG1/SEG2/PA2/PA1 SEG3/PA3
ADC1/SEG5/SEG4/PA5/PA4 ADC2/SEG6/PA6 SEG7/PA7
SD0DATA/SEG8/PA8 SD0CMDA/SEG9/PA9 ADC3/SD0CLKA/SEG10/PA10
10 LCD_RES
11 LCD_CS
+3.3V
C503 104
LCD128*64-11P
J501
MP3
FM
C/S C/S C/S C/S C/S C/S C/S
7 6 5 4 3 2 1

NS4158用户手册V1.1

3 应用领域 ........................................................................................................................................................... 5
7.1
NS4158 封装管脚分配图 ................................................................................................................. 7
7.2
NS4158 引脚功能描述 ..................................................................................................................... 8
NS41ቤተ መጻሕፍቲ ባይዱ8
防失真、超低EMI、无需滤波器、5W单声道数字音频功放
NS4158 用户手册 V1.1
深圳市纳芯威科技有限公司 2011 年 03 月
Nsiway
1
日期 2011-3-17
版本 V1.1
作者
NS4158
防失真、超低EMI、无需滤波器、5W单声道数字音频功放
修改历史
修改说明
Nsiway
2
8 NS4158 典型参考特性...................................................................................................................................... 8

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MCU，LED ，KEY
B
BT
PA
B
+3.3V +3.3V
U401 SPI_CS SPI_DI C402 10P A25Q80 C401 105 R401 4.7R SD_CMD
SD401
R403 3.3K
10 11 12
A
备注： C402 不能省
CD WP SHEET
SD
6
5
USB
6
NC
L401 1K@100MHZ
C305 222 R302 2K C304 103
+3.3V
D102 R103 RED LED1 DLED-CK D101 R107 330R RED LED2 AD_Key R106 15K R108 33K R109 100K R104 22K S101
LPF C306 223 R304 10K SP+ SP-
6
1R/NC U402 USBDM
6
R402
USB5V 1 2 3 4
J402
6
J401
VIN 1 2 3 4 5
+5V DM DP GND
D401 IN4007 R404 C407 224 LIN_L/R 2R7 BT401 3.4V~4.2V
VBAT
VMCU
6 5 4
C405 NC/225
C+ VIN C-
+3.3V
BT_TX BT_SDI BT_SDO BT_CLK BT_SYNC BT18V
1 2 3 4 5 6 7 8
C VIN
R102 1K
VBAT CLK_32K I2C_SDA I2C_SCL CLK_EN XI XO LDO_EN
C104 105
C206 NC
C202 105
UART_RXD PCM_SDO PCM_SDI PCM_CLK PCM_SYNC VIO VDD18 SW
VOUT GND EN
1 2 3
C406 10uF
USBDP
+5V LIN_L AGND LIN_R GND
R405
4.7K FM_ANT
SW401 SW-DIP
A
SD、FLASH
USB
Power，LINEIN
U201
FM_ANT
C205 100P C204 18P
C301 105 LPF BT_ANT C303 104 R305 5.1K
1 2 3 4
SD bypass IN+ IN-
OUT+ GND VDD OUT-
8 7 6 5
SP+
C302 106
SP-
VMCU
DACR LIN_L/R C105 C106 105 105
AC311/AC511/AC515A_32PIN
SPK
+3.3V
R201 10K OSC26MO' BL_32K
C207 102P
备注： 1 、供给蓝牙的26M走线必须严格用GND包裹
备注：调音电，客户根据需求可自己设计
备注：因不同颜色的LED灯压降不一样，选定LED灯调好程序后，生产过程中不能随便调换。
C101 12P Y101 HS_26M/9.3pF/9pF OSC26MO' LED2 U101 C102 12P/10P R105 100R OSC26MI OSC26MO BT_RX BT_TX AD_Key BT_SDI BT_SDO BT_CLK BT_SYNC USBDM USBDP DACVDD VCOM AGND
1 2 3 4
CS VCC SO HOLD WP SCK GND SI
8 7 6 5
C403 NC/105
SD_CLK SD_DAT
SPI_CLK SPI_DO
9 1 2 3 4 5 6 7 8
D2 D3/CS CMD/DI VSS VDD CLK VSS D0/DO D1
VMCU
C404 NC/105
C
J301
R101 NC/1K
PREV/VS103 NEXT/V+ S104 MODE
1.3V 2.0V 2.7V
C203 105
BT_EN
VBAT
XI
P/P S102
0V
+3.3V
CLK_32K IIC_DAT IIC_CLK
NC/1K Q101 NC/8550
9 10 11 12 13 14 15 16
NC NC[FMIP] NC[FMIN] GPIO2 GPIO5 RFP NC NC
24 23 22 21 20 19 18 17
L202 100nH
R303 33K
C209 3.3nH L201 NC
L203 0R
C210 2.7P
BT_ANT
C211 1nH
FM_L/R C307 105 DACR R301 1K
IIC_CLK
BT_EN C103 105
1 2 3 4 5 6 7 8 9 10 11 12 13 14
PB3 PB8 PB2/PB1 PB9 PA15 PC0/PB10 PA14 PC7 PA11/PA10 PC8 PA9 PC9 PA8 PC10 PA5 PC13 PA4 PC15/PC14 USBDM VSSIO USBDP LDO5V DACVDD VDDIO VCOM DACR DACVSS DACL
AC4107A_TSSOP28
28 27 26 25 24 23 22 21 20 19 18 17 16 15
UART_TXD HOST_WAKE GPIO4 VDD12 NC[FM_OUTR] NC[FM_OUTL] BT_WAKE[GPIO_FM3] NC[GPIO_FM2]
SD_CMD IIC_DAT SD_CLK SD_DAT BL_32K SPI_DI SPI_CLK SPI_DO SPI_CS +3.3V LED1 MIC
BT_RX
D
C201 105
FM_L/R
不同型号晶振匹配电容大小： C102 C101 26M_9.3pF： 12P 12P 10P 12P 26M_9pF： R105 必须靠近主控端放置
注：原理图中注释说明设计时需特别注意
FM_ANT
D VMCU
U301 8002
32 31 30 29 28 27 26 25