Page 1 UHF DIGITAL TRANSCEIVER / UHF 数字模拟双模手持对讲机 NX-300 SERVICE MANUAL / 维修手册 C version / C 版本 © 2009-10 PRINTED IN CHINA B51-8890-00 ( N ) Helical Antenna Knob (Selector) (KRA-23: option) (K29-9408-13) Knob (Volume) (K29-9407-03) Badge (B43-1606-04) Knob (PTT) (K29-9405-03)
Page 2: Table Of Contents
的信息而导致的损害负责。Kenwood 公司保留出于改进的需要 rors or omissions. Neither is any liability assumed for dam- 而随时对文中的产品信息做出更改的权利。 ages resulting from the use of the information contained herein. Kenwood reserves the right to make changes to any products herein at any time for improvement purposes.
Page 3: General
NX-300 概述 GENERAL / 引言 INTRODUCTION 本手册的范围 SCOPE OF THIS MANUAL 本手册是提供给熟悉通信专业并且具有维修经验的技术人 This manual is intended for use by experienced tech ni - 员使用的。它包括了维修该设备所需要的全部资料和现行出 cians familiar with similar types of commercial grade com - 版日期。在出版后可能发生变动，如果需要，可以参照《维 mu ni ca tions equipment. It contains all required service 修通报》或《手册修订本》进行补充。...
Page 4: System Set-Up
Frequency range (MHz) RF power Type Choose the type of transceiver TX/RX 400~470 NX-300 C A personal computer, programming interface (KPG-36/36A), USB adapter (KCT-53U), and programming software (KPG-111D(C)) Transceiver programming are required for programming. (The frequency, and signaling data are programmed for the transceiver.)
Page 5: Realignment
NX-300 模式组合 REALIGNMENT / 1. 模式 1. Modes 用户模式 User mode 面板测试模式面板调谐模式 Panel test mode Panel tuning mode PC模式数据编程模式 PC mode Data programming mode Firmware PC test PC tuning programming mode 固件编程模式测试模式调谐模式 mode mode 复制模式 Clone mode 固件版本信息...
Page 6 NX-300 模式组合 REALIGNMENT / 4. 关于面板调谐模式 4. Panel Tuning Mode 关于设定方式，参见调整。 Setting method refer to ADJUSTMENT. 5. PC 模式 5. PC Mode 5-1. 前言 5-1. Preface 手持对讲机采用个人电脑，编程接口 ( K P G -36/36A )，U S B The transceiver is programmed by using a personal com- 适配器...
Page 7 NX-300 模式组合 REALIGNMENT / 5-3. KPG-36/KPG-36A 说明 5-3. KPG-36/KPG-36A description (PC 编程接口电缆 : 选购件 ) (PC programming interface cable: Option) 将手持对讲机连接到电脑需要 K P G -36/36A。该电缆的...
Page 8 NX-300 模式组合 REALIGNMENT / 注意 : Note: 如果手持对讲机的固件编程模式设为禁用，则无法进入此 This mode cannot be entered if the Firmware Program- 模式。 ming mode is set to Disable in the Programming soft- ware. 6-4. 功能 6-4. Function 1. 如果在显示“PROGRAM 115200”时按 [Side2] 键，则显示 1. If you press the [Side2] key while “PROGRAM 115200”...
Page 9 NX-300 模式组合 REALIGNMENT / 2. 输入正确的密码后，显示“CLONE MODE” ，手持对讲机可以 2. When you enter the correct password, and “CLONE 作为复制源使用。下面描述如何输入密码。 MODE” is displayed, the transceiver can be used as the cloning source. The following describes how to enter • 如何使用键盘输入密码； the password.
Page 10: Installation
NX-300 安装 INSTALLATION / 语言指导及存储单元 (VGS-1: 选购件 ) Voice Guide & Storage Unit (VGS-1: Option) ■在手持对讲机中安装 VGS-1( 语言指导及存储单元 ) ■ Installing the VGS-1 (Voice Guide & Storage 1. 用镊子除去底座与可选板盖的螺丝之间的粘合剂。 Unit) in the transceiver 1. Remove the bond from between the chassis and the screw for the option board cover using a pair of twee- zers.
Page 11 NX-300 安装 INSTALLATION / 4. 从控制 PCB 的连接器 (CN710) 上取下 OPTION PCB。 4. Remove the OPTION PCB from the connector (CN710) of the Control PCB. OPTION PCB CN710 5. 如图所示，将板簧 (G02-1846-03) 安装到 VGS-1 上。 5. Attach the flat spring (G02-1846-03) to the VGS-1 as 注意...
Page 12: Disassembly For Repair
NX-300 维修拆卸 DISASSEMBLY FOR REPAIR / 1. 防水注意事项 1. Precautions for Waterproof · 请勿拆下手持对讲机背面的黑色薄片 ( 参见下图 )。拆下 • Do not remove the black sheet from the reverse side of 该薄片会降低手持对讲机的防水效能，如果有水渗入手持 the transceiver (refer to the illustration below). Removal 对讲机内部，可能会引发故障。 of this sheet decreases the waterproof efﬁ ciency of the ·...
Page 13 NX-300 维修拆卸 DISASSEMBLY FOR REPAIR / 在维修手持对讲机之后将其防水性能恢复到 I P67 等级时， Perform the following work when you restore the water- 请执行以下操作。 proof performance of the transceiver at the IP67 level after the transceiver is repaired. Attach the two pieces of double-sided 在顶盖和底座之间贴上两块双面胶带...
Page 14 NX-300 维修拆卸 DISASSEMBLY FOR REPAIR / 2. 拆卸注意事项 2. Precautions for Disassembly 拆卸手持对讲机之前，先进行第 23 页的“防水性能确认” 。 Perform “Water Resistance Confirmation” on page 23 如果确认失败，请进行第 26 页的“泄漏位置确认” 。 before disassembling the transceiver. If it fails, perform “Leakage Location Identiﬁ cation” on page 26.
Page 15 NX-300 维修拆卸 DISASSEMBLY FOR REPAIR / ■ Removing the TOP packing (G53-1762-02) ■拆下顶盖 (G53-1762-02) 1. 向左拉顶盖，拆下装在底座左侧凹槽内的盖 ①。 1. Pull the TOP packing to the left to remove the packing that is ﬁ t into the left groove of the chassis q.
Page 16 NX-300 维修拆卸 DISASSEMBLY FOR REPAIR / 2) 如图所示移动顶盖，将其安装到底座上 ①。 2) Move the TOP packing as shown in the ﬁ gure, and at- tach it to the chassis q. 3) 将顶盖装入底座的右侧凹槽 ②。 4) 将顶盖装入底座的左侧凹槽 ③。 3) Fit the TOP packing into the right groove of the chas- sis w.
Page 17 NX-300 维修拆卸 DISASSEMBLY FOR REPAIR / 3. 重新组装注意事项 3. Precautions for Reassembly ■将可选板盖安装到底座 ■ Installing the option board cover onto the chassis 1. 用两颗螺丝将可选板盖安装到底座上。 1. Install the option board cover onto the chassis using the 注意 : two screws. 确认可选板盖的防水肋片上没有异物。( 如有附着的异物，...
Page 18 NX-300 维修拆卸 DISASSEMBLY FOR REPAIR / ■ Forming the VOL/CH FPC, Cord ASSY and Uni- ■ 确定 VOL/CH FPC，线缆组件和通用连接器 FPC 的形状 versal connector FPC 使 VOL/CH FPC，线缆组件和通用连接器 FPC 的形状如图所 Form the VOL/CH FPC, Cord ASSY and Universal con- 示。...
Page 19 NX-300 维修拆卸 DISASSEMBLY FOR REPAIR / 2. 将键帽安置到底座上。然后，将底座紧密装配到键帽的凹 2. Place the key top on the chassis. Then, ﬁ t the chassis tightly into the groove of the key top q. 槽内 ①。注意 : Note: 确认键帽的整个凹槽与底座紧密吻合。 Conﬁ rm that the entire groove of the key top ﬁ ts to the 3.
Page 20 NX-300 维修拆卸 DISASSEMBLY FOR REPAIR / ■ Relay hardware (E29-1221-14) installation proce- ■中间硬件 (E29-1221-14) 安装操作 1. 用镊子将中间硬件的一侧装配到底座的右边角 ①。 dure 2. 将中间硬件的另一侧装到底座的肋片 ②。 1. Fit one side of the relay hardware to a right corner of the chassis using a pair of tweezers q.
Page 21 Part Number Remark Sticker B42-7296-04 “NXDN” is printed. Plastic Cabinet (18-key) A02-4003-23 Badge B43-1606-04 “KENWOOD” is printed. Fibrous Sheet (SP) G10-1373-04 Used for ﬁ xing the LCD ASSY on the Illumination Guide (LCD). LCD ASSY B38-0923-05 Adhesive Sheet (LCD) J99-0714-04 Also used for ﬁ...
Page 22 NX-300 维修拆卸 DISASSEMBLY FOR REPAIR / ■组装信息 ( 薄片 / 缓冲垫 ) 更换 ( 定购 )“主要部件”时， “组装的薄片 / 缓冲垫”也应当一同更换 ( 定购 )。标签和薄片等属于不可重复使用的部件。需使用新部件方可在维修后获得手持对讲机的性能。例如，更换“塑料机壳 (A02-4003-23(18 键 ))”时， “标签 (B42-7296-04)” ， “徽标 (B43-1606-04)”和“纤维片 (G10-1373-04)” 也应当一并定购和更换，因为标签 (B42-7296-04)，徽标 (B43-1606-04) 和纤维片 (G10-1373-04) 不能重复使用。...
Page 23 NX-300 维修拆卸 DISASSEMBLY FOR REPAIR / 4. 防水检验方法 4. Water-resistant Inspection Method 准备 Preparation • 防水检验夹具 (W05-1499-00) • Water-resistant Inspection Jig (W05-1499-00) vacuum/ pressure meter 真空/压力表 hose adapter valve 软管适配器阀门 hose hose 软管软管 pump 泵 piston 活塞注意 : Note: 可通过转动仪表背面的螺丝进行表针的...
Page 24 NX-300 维修拆卸 DISASSEMBLY FOR REPAIR / ■ Water Resistance Conﬁ rmation ■防水性能确认 1) 将通用连接器盖装到通用连接器上。 1) Install the universal connector cap over the universal 2) 用镊子拆下装在底座背面右侧的防水片 ( G11-4331-04) 和 connector. 黑色薄片 ( G11-4440-04) ①。该防水片可让空气通过，而 2) Remove the water-resistant sheet (G11-4331-04) and 不让水通过。...
Page 25 NX-300 维修拆卸 DISASSEMBLY FOR REPAIR / a) 关闭泵侧阀门。 a) Close the valve on the side of the pump. b) 从软管中取出泵。 b) Remove the pump from the hose. c) 将取出的泵的活塞推到底。 c) Push the piston of the removed pump to the end.
Page 26 NX-300 维修拆卸 DISASSEMBLY FOR REPAIR / 8) 进行第 27 页的“安装防水片和黑色薄片” 。 8) Perform the “Attaching the water-resistant sheet and black sheet” on page 27. ■泄漏位置确认 ■ Leakage Location Identiﬁ cation 如果第 25 页的“防水性能确认”的步骤 6 失败，请执行此 If step 6 of “Water Resistance Conﬁ rmation” on page 25 操作。...
Page 27 NX-300 维修拆卸 DISASSEMBLY FOR REPAIR / 表针会因空气泄漏而逐渐向下移动。应在表针达到 5kPa 之 The meter needle will move down gradually due to air 前将手持对讲机放入水中。可通过气泡确认是否漏气。当 leakage. Place the transceiver into the water before it 表针指示 3 到 4kPa( 仪表右侧 ) 时，执行上述 3) 中的步骤 reaches 5kPa.
Page 28 NX-300 维修拆卸 DISASSEMBLY FOR REPAIR / New black sheet / 新黑色薄片 New water-resistant sheet / 新防水片 ■ After repairing and reassembling ■维修并重新组装之后维修并重新组装之后，在底座左侧螺丝的上面和底座与可 After repairing and reassembling, apply bond to the top 选板盖的左侧螺丝之间涂上粘合剂。 of the left side screw for the chassis and between the 注意...
Page 29 NX-300 维修拆卸 DISASSEMBLY FOR REPAIR / ■ Parts list concerning the waterproof of each leakage location LCD Display, Front Key, Speaker, ANT, Volume Knob, Selector Knob, The space of the Front panel and the chassis The space of the TOP panel and the chassis...
Page 30 NX-300 维修拆卸 DISASSEMBLY FOR REPAIR / ■与各泄漏位置的防水有关的零部件列表 LCD 显示器，前键，扬声器， ANT，音量旋钮，选择旋钮，前面板和底座的空间顶部面板和底座的空间零件名称零件号零件名称零件号塑料机壳 (18 键 ) A02-4003-23 衬垫 (TOP) G53-1762-02 衬垫 (18 键 ) G53-1766-11 光导板 (TX/BUSY) B11-1855-04 支架 (FG-SP) J19-5505-11 面板 (TOP) A62-1156-02 薄片 (SP) G11-4458-14 双面胶带...
Page 31: Circuit Description
CIRCUIT DESCRIPTION / 1. 概述 1. Overview NX-300 为 UHF 便携式手持对讲机，设计用于 400 至 470MHz The NX-300 is a UHF portable transceiver designed to 的频率范围。该设备由接收机，发射机，锁相环 ( P L L ) 频率 operate in the frequency range of 400 to 470MHz. The unit 合成器，基带部分，电源和控制电路组成。...
Page 32 NX-300 电路说明 CIRCUIT DESCRIPTION / 3. 接收部系统 3. Receiver System 3-1. RF 电路 3-1. RF Circuit 天线端子接收到的 RF 信号依次通过天线开关 (D606，D607， An incoming RF signal from the antenna terminal is D709 和 D711) 和带通滤波器 ( L721，L722)。带通滤波器经 passed through the antenna switch (D606, D607, D709, 由可变电容器调整。可变电容器的输入电压经由数模转换器...
Page 33 NX-300 电路说明 CIRCUIT DESCRIPTION / 3-3. 音频放大器电路 3-3. Audio Ampliﬁ er Circuit F M 模式的音频处理 ( 高通滤波器，低通滤波器，去加重 Audio processing (high-pass filter, low-pass filter, de- 等 ) 和 N X D N 模式的解码由 D S P 进行处理。I C108 和 I C102 emphasized and so on) at FM mode and decoding at NXDN 的音频信号通过放大器...
Page 34 NX-300 电路说明 CIRCUIT DESCRIPTION / 4. 发射部系统 4. Transmitter System 4-1. 音频频带电路 4-1. Audio Band Circuit 内部麦克风的信号通过静音开关 ( Q5)。如未连接 S P - M I C， The signal from the internal microphone goes through 则通用连接器上的麦克风切换端子 ( M S W ) 变为高，同时静音...
Page 35 NX-300 电路说明 CIRCUIT DESCRIPTION / 4-4. 驱动和末级放大器 4-4. Drive and Final Ampliﬁ er 来自 T / R 开关 ( D601 打开 ) 的信号由驱动放大器 ( Q601， The signal from the T/R switch (D601 is on) is ampliﬁ ed Q602 和 Q603) 放大到 25~27d B m。驱动放大器的输出由 R F 功...
Page 36 NX-300 电路说明 CIRCUIT DESCRIPTION / 5. PLL 频率合成器 5. PLL Frequency Synthesizer 5-1. VCTCXO(X500) 5-1. VCTCXO (X500) VCTCXO(X500) 为 PLL 频率合成器产生 19.2MHz 的基准频率。 VCTCXO (X500) generates a reference frequency of 该基准频率被施加到 PLL IC(IC502) 的第 9 针，作为第 2 本 19.2MHz for the PLL frequency synthesizer. This reference 振信号通过三倍频器...
Page 37 NX-300 电路说明 CIRCUIT DESCRIPTION / 5-4. 本地开关 (D600，D601) 5-4. Local Switch (D600, D601) 缓冲放大器 ( Q600) 输出信号的连接目标由二极管开关 The connection destination of the signal output from the (D601)( 由发射电源...
Page 38 NX-300 电路说明 CIRCUIT DESCRIPTION / 6-1. ASIC 6-1. ASIC A S I C ( I C108) 是一个 32 位 R I S C 处理器，具备外围功能和 The ASIC (IC108) is a 32-bit RISC processor, equipped ADC/DAC。 with peripheral function and ADC/DAC. 该 ASIC 以 18.432MHz 时钟和 3.3V/1.5V DC 运行。它控制...
Page 39 NX-300 电路说明 CIRCUIT DESCRIPTION / 6-6. DSP 6-6. DSP D S P 电路由 D S P ( I C102) 组成，可处理基带信号。D S P 在 The DSP circuit consists of a DSP (IC102) and processes 18.432M H z 的外部时钟上运行 ( 与 I C108 相同 )，I / O 部分以...
Page 40 NX-300 电路说明 CIRCUIT DESCRIPTION / TX-RX unit (X57) F900 RF Final AMP 2.5A IC902 /SAVE Q905 TX circuit /5TC 50T SW Q902 RX circuit 50R SW 50IF Q903 IF circuit 50IF SW IC903 PLL, VCTCXO AVR IC Q901 TX/Busy LED...
Page 41 NX-300 电路说明 CIRCUIT DESCRIPTION / 8. 信令电路 8. Signaling Circuit 8-1. 编码 (QT/DQT/LTR/DTMF/2 音 /MSK) 8-1. Encode (QT/DQT/LTR/DTMF/2-tone/MSK) QT，DQT，LTR，DTMF，2 音和 MSK 的各信令信号由 DSP 电路 Each signaling data signal of QT, DQT, LTR, DTMF, 2-tone 产生，叠加到调制信号上并从 IC108 输出。QT/DQT/LTR 信号 and MSK is generated by the DSP circuit, superposed on 的调制平衡由...
Page 42: Components Description
NX-300 元件说明 COMPONENTS DESCRIPTION / 控制单元 (X53-4262-72) Control unit (X53-4262-72) 有关号码零件名称说明 Ref. No. Part Name Description LCD 对比度 LCD contrast IC101 FLASH ROM IC101 FLASH ROM IC102 IC102 IC103 SRAM IC103 SRAM IC104 2 输入 AND 栅...
Page 43 NX-300 元件说明 COMPONENTS DESCRIPTION / 有关号码零件名称说明 Ref. No. Part Name Description Q103 场效应管 12 键背光开关 Q103 12key backlight switch Q401,402 场效应管电平转换器 Q401,402 Level converter Q403 晶体管 SB2 开关 Q403 Transistor SB2 switch Q404 场效应管 SB2 开关控制...
Page 44 NX-300 元件说明 COMPONENTS DESCRIPTION / TX-RX 单元 (X57-7370-11) TX-RX unit (X57-7370-11) 有关号码零件名称说明 Ref. No. Part Name Description IC404 OP AMP(RSSI/VAGC) IC404 OP AMP (RSSI/VAGC) IC500 温度传感器 IC500 Temperature sensor IC501 TCXO MOD 的 AF AMP IC501 AF AMP for TCXO MOD...
Page 45 NX-300 元件说明 COMPONENTS DESCRIPTION / 有关号码零件名称说明 Ref. No. Part Name Description D506,507, D506,507, Variable capaci- 可变电容二极管频率控制 Frequency control D510,511 D510,511 tance diode Variable capaci- D514~517 可变电容二极管频率控制 D514~517 Frequency control tance diode D518 二极管纹波滤波器 D518 Diode Ripple ﬁ...
Page 46: Parts List
NX-300 零件表 PARTS LIST / 2 2 0 CC45 Color* 010 = 1pF 0 = 22pF 1 = Type ... ceramic, electrolytic, etc. 4 = Voltage rating 100 = 10pF 2 = Shape ... round, square, etc. 5 = Value...
Page 47 NX-300 零件表 PARTS LIST / ✽ New Parts. indicates safety critical components. L : Scandinavia K : USA P : Canada Parts without Parts No. are not supplied. Y : PX (Far East, Hawaii) T : England E : Eu rope Les articles non mentionnes dans le Parts No.
Page 48 NX-300 零件表 PARTS LIST / CONTROL UNIT (X53-4262-72) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C101-104 CK73HB1A104K CHIP C 0.10UF C447 CK73HB1H102K CHIP C 1000PF C105 CK73HB0J105K CHIP C 1.0UF...
Page 49 NX-300 零件表 PARTS LIST / CONTROL UNIT (X53-4262-72) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C763 CK73HB1E103K CHIP C 0.010UF L710-712 L92-0444-05 CHIP FERRITE C764 CK73HB1H102K CHIP C...
Page 50 NX-300 零件表 PARTS LIST / CONTROL UNIT (X53-4262-72) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R149 RK73HB1J000J CHIP R 1/16W R453 RK73HB1J104J CHIP R 100K 1/16W R150...
Page 51 NX-300 零件表 PARTS LIST / CONTROL UNIT (X53-4262-72) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R726 RK73HB1J104J CHIP R 100K 1/16W R803 RK73HB1J103J CHIP R 1/16W R727-729...
Page 52 NX-300 零件表 PARTS LIST / CONTROL UNIT (X53-4262-72) TX-RX UNIT (X57-7370-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation D412 1SS301F DIODE Q406 2SB1132 (Q,R) TRANSISTOR D413 1SS388F...
Page 53 NX-300 零件表 PARTS LIST / TX-RX UNIT (X57-7370-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C553 CC73HCH1H100B CHIP C 10PF C651 CK73HB1H471K CHIP C 470PF C554 CC73HCH1H470J...
Page 54 NX-300 零件表 PARTS LIST / TX-RX UNIT (X57-7370-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C754 CC73HCH1H090B CHIP C 9.0PF C954 CK73GB1C224K CHIP C 0.22UF C755 CC73HCH1H050B CHIP C 5.0PF...
Page 55 NX-300 零件表 PARTS LIST / TX-RX UNIT (X57-7370-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation L704 L40-1891-86 SMALL FIXED INDUCTOR (1.8UH) R565 RK73HB1J101J CHIP R 1/16W L705,706...
Page 56 NX-300 零件表 PARTS LIST / TX-RX UNIT (X57-7370-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R660 RK73HB1J473J CHIP R 1/16W R774,775 RK73HB1J104J CHIP R 100K 1/16W R661...
Page 57 NX-300 零件表 PARTS LIST / TX-RX UNIT (X57-7370-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation D516,517 1SV282-F VARIABLE CAPACITANCE DIODE D518 HSC119 DIODE D519 1SV278F VARIABLE CAPACITANCE DIODE...
Page 58: Exploded View
NX-300 部件分解图 EXPLODED VIEW / 39x2 Control unit (X53) Optional board unit (X57 B/2) Hx10 TX-RX unit (X57 A/2) : N08-0564-04 : N09-2426-14 : N09-2440-15 : N09-6549-04 : N09-6554-05 : N14-0844-04 H M2 x 5 : N83-2005-48 Parts with the exploded numbers larger than 700 are not supplied.
Page 59: Packing
NX-300 包装 PACKING / 60 Belt clip (B09-0712-03) (J29-0730-05) 53 Packing (Cap) (G53-1769-04) G Pan head machine screw (N30-3008-60)x2 A Dressed screw (N08-0564-04) 715 Packing fixture 716 Carton board 14 Instruction manual (B62-2189-10) 715 Packing fixture 719 Item carton case...
Page 60: Trouble Shooting
NX-300 故障排除 TROUBLE SHOOTING / Fault Diagnosis of the BGA (Ball Grid Array) IC ■ Overview A ﬂ owchart for determining whether or not the transceiver can be powered on (the LCD does not function even if the power switch is turned on) due to broken BGA parts.
Page 61 NX-300 故障排除 TROUBLE SHOOTING / BGA( 球状矩阵排列 )IC 的故障诊断 ■概述用于确定手持对讲机因 BGA 部分损坏时是否可以开启电源 ( 即使打开电源开关 LCD 也不工作 ) 的流程。 ■ BGA 部分 ASIC(IC108)，DSP(IC102)，FLASH(IC101)，SRAM(IC103) BGA IC 出现问题时，请带印刷电路板 (18 键的 X53-4262-74) 进行维修。各种 ESN/ 默认调整值写在用于维修的印刷电路板上。此外还包括各种 ESN 标签。( 请参阅第 64 和 66 页。) 纽扣式锂电池...
Page 62 NX-300 故障排除 TROUBLE SHOOTING / When a normal ● Checking the output signal value is confirmed. from the ASIC When an abnormal value is confirmed. Points to be checked Normal voltage Remove R432. If the ASIC side is 0V, SBC R432 3.3V...
Page 63 NX-300 故障排除 TROUBLE SHOOTING / 确认数值正常时 ●检查ASIC的输出信号确认数值异常时检查点正常电压取下R432。如果ASIC侧为0V， SBC R432 3.3V 则ASIC/FLASH/SRAM可能已损坏。确认数值正常时确认数值异常时检查点正常电压如果/DRST侧为0V，则ASIC/FLASH/SRAM已损坏。 /DRST C109 3.3V 确认数值正常时 ●LCD显示控制确认数值异常时检查点正常电压取下R406。如果ASIC侧为0V， /LCDRST R406 3.3V 则ASIC/FLASH/SRAM可能已损坏。确认数值正常时确认数值异常时如果/CS4为0V或3.3V,，检查点正常电压 /CS4 IC402 (7 针) 3.3V→0V→3.3V...
Page 64 ■ Control unit Information Original Control For Service Control 型号名称原始控制单元编号维修控制单元编号 Model Name unit Number unit Number NX-300(C:18 键 ) X53-4262-72 X53-4260-74 NX-300 (C: 18-key) X53-4262-72 X53-4262-74 ■“原始控制单元”和“维修控制单元”的确认方法 ■ Method of conﬁ rming “Original Control unit” and “Service Control unit”...
Page 65 NX-200/300 固件。 Firmware NX-200/300 Firmware. FPU 数据 FPU Data 数据 X53-426(NX-300) Ex 型。 X53-426 (NX-300) Ex type data. (PC 编程模式 ) (PC programming mode) 各种调整数据 Various Adjustment Data General adjustment values for the X53-426(NX-300) 的一般调整值。 (PC 测试模式 ) (PC Test mode) X53-426 (NX-300).
Page 66 Use the KPG-110SM on the NXDN Trunking System side 的手持对讲机信息显示也会改变，但这并不影响手持对讲 to reprogram the NXDN ESN number. 机的操作。 • When a new printed circuit board is used, the Kenwood • 若要改为原来的 Kenwood ESN 和 NXDN ESN，请与我方的维 ESN changes, as does the Transceiver Information dis- 修中心联系。...
Page 67: Adjustment
NX-300 调整 ADJUSTMENT / 控制器 Controls Selector Power switch / Volume 选择器电源开关/音量 Orange key 橙色键 PTT switch / PTT开关 Universal connector 通用连接器 Side1 key / Side1键 Side2 key / Side2键面板测试模式 Panel Test Mode ■ Test mode operation features ■测试模式操作功能...
Page 68 NX-300 调整 ADJUSTMENT / 副 LCD 显示上出现“FNC” “FNC” appears on the sub LCD display 键功能显示 Function Display [ 选择器 ] - [Selector] 功能关 Function off 模拟 :“A” Analog: “A” 模拟 /NXDN Analog/NXDN NXDN:“N” NXDN: “N” [Side1] 功能关...
Page 69 NX-300 调整 ADJUSTMENT / ■ Frequency and Signaling ■频率和信令已经根据下表所示的频率调整了设置。需要时，按调整步 The transceiver has been adjusted for the frequencies 骤重新调整，以获得实际操作时想要的频率 shown in the following table. When required, readjust them following the adjustment procedure to obtain the frequen- cies you want in actual operation.
Page 70 NX-300 调整 ADJUSTMENT / 面板调谐模式 Panel Tuning Mode ■调谐手持对讲机的准备 ■ Preparations for tuning the transceiver 在尝试调谐手持对讲机前，请将手持对讲机连接到合适的 Before attempting to tune the transceiver, connect the 电源上。 unit to a suitable power supply. 发射打开时，手持对讲机必须连接到合适的等效负载上 ( 如 Whenever the transmitter is turned, the unit must be 功率表...
Page 71 NX-300 调整 ADJUSTMENT / ■ Key operation ■键操作功能 Function 键按下按住 (1 秒钟 ) Push Hold (1 second) [ 选择器 ] [Selector] 调整值递增连续增加 Adjustment value up Continuation up 调整值递减连续减小 Adjustment value down Continuation down [Side1] 自动调整开始...
Page 72 NX-300 调整 ADJUSTMENT / ■ Adjustment item supplement Adjustment Item Description LCD contrast The contrast of LCD display can be changed. “Counterclockwise Volume” is adjusted at the minimum volume position. Counterclockwise Volume “Clockwise Volume” is adjusted at the maximum volume position.
Page 73 NX-300 调整 ADJUSTMENT / ■调整项目补充调整项目说明 LCD 对比度可更改 LCD 显示的对比度。 “逆时针音量”调整在最小音量位置。逆时针音量 “顺时针音量”调整在最大音量位置。这些调整可纠正音量差异。 “逆时针音量”和“顺时针音量”都必须调整。顺时针音量 ( 应用音量的曲线数据。) 调整 VCO( 接收 ) 的锁定电压。接收辅助必须在调整接收机部分的所有调整项目之前调整此项。调整 VCO( 发射 ) 的锁定电压。发射辅助必须在调整发射机部分的所有调整项目之前调整此项。调整 SSG 接收条件下的频率稳定性。频率 SSG 需要 0.001ppm 的精度，因此，必要时请使用标准振荡器。...
Page 74 NX-300 调整 ADJUSTMENT / ■ Adjustment item and Display Adjusutment Main LCD (NXDN Very Narrow) Adjust item (Analog Wide) (Analog Narrow) (NXDN Narrow) Order Sub LCD display item display Number Adjustment range 1 point ADJ Common LCD contrast CNTR Section 2...
Page 75 NX-300 调整 ADJUSTMENT / ■调整项目和显示主 LCD 调整项目 ( 模拟宽 ) ( 模拟窄 ) (NXDN 窄 ) (NXDN 超窄 ) 顺序调整项目副 LCD 显示显示编号调整范围 1 点调整 LCD 对比度 CNTR 共通部分 2 1~256 1 点调整逆时针音量 VOL1 VOL 测量值...
Page 76 NX-300 调整 ADJUSTMENT / Adjusutment Main LCD (NXDN Very Narrow) Adjust item (Analog Wide) (Analog Narrow) (NXDN Narrow) Order Sub LCD display item display Number Adjustment range (RSSI measurement Receive Sensitivity 2 SENS2 value) Section 3 1~256 - *1 (RSSI measurement...
Page 77 NX-300 调整 ADJUSTMENT / 主 LCD 调整项目 ( 模拟宽 ) ( 模拟窄 ) (NXDN 窄 ) (NXDN 超窄 ) 顺序调整项目副 LCD 显示显示编号调整范围接收机部分灵敏度 2 SENS2 (RSSI 测量值 ) 1~256 - *1 接收机部分 RSSI 基准...
Page 78 NX-300 调整 ADJUSTMENT / [Side2] [Side2] Analog MAX Deviation Analog MAX Deviation Narrow Wide ADEV ADEV ] press ] hold 5 reference level Adjustments [Side2] [Side2] QT Deviation QT Deviation Narrow Wide ] press ] hold [Side2] [Side2] DQT Deviation...
Page 79 NX-300 调整 ADJUSTMENT / [Side2] [Side2] 模拟MAX频偏模拟MAX频偏窄宽 ADEV ADEV ] 按下 ] 按住 5基准电平调整 [Side2] [Side2] QT频偏 QT频偏窄宽 ] 按下 ] 按住 [Side2] [Side2] DQT频偏 DQT频偏窄宽 ] 按下 ] 按住 [Side2] [Side2] LTR频偏...
Page 80 Li-ion High Capacity Battery: R1=Open In order to turn the volume nut and the channel selector Li-ion Normal Capacity Battery: R1=560kΩ nut, use a recommendation tool. KENWOOD part No.: W05-1123-00 Schematic diagram ■ Battery jig (W05-1370-00) Connect the power cable properly between the battery –Terminal...
Page 81 • 当使用电池夹具时，你必须测定电池夹具的终端电压。因为，使用天线接口转换头 [SMA(f)-BNC(f) 或 SMA(f)-N(f)] 进电源和电池夹具之间会有一些的电压下降，尤其在对讲机行调整。 ( 转换头不作为可选件提供，因此请购买商用转换头。 ) 发射的时候。 • 电池夹被检测为“高容量锂电池” 。 ■螺母扳手高容量锂电池 :R1=Open 普通容量锂电池 :R1=560kΩ 为了转动音量螺母和信道选择螺母，请使用推荐的工具。 KENWOOD 零件号 :W05-1123-00 原理图 ■电池夹具 (W05-1370-00) 在对讲机的电池夹具和电源之间连接适当的电源电缆，确－端子 (黑色) 认了输出电压之后接通电源开关，电压超过或极性颠倒都有可能损坏对讲机。 – 电源电源电缆 – 端子(黑) ＋端子...
Page 82 NX-300 调整 ADJUSTMENT / ■ Universal connector ■通用连接器使用用于 P C 调谐的接口电缆 ( K P G -36/36A )，或带有插头 Use the interface cable (KPG-36/36A) for PC tuning or (E30-3287-28) 的导线及用于面板调谐的螺丝 (N08-0535-08)。 the lead wire with plug (E30-3287-28) and screw (N08-0535- 将插头连接到手持对讲机的通用连接器并旋紧螺丝。...
Page 83 NX-300 调整 ADJUSTMENT / · PC 调谐 • PC tuning 将配线连接到接口电缆接线盒内的 PCB。 Connect the wires to the PCB in the connector case of 为将配线引出接线盒，需要对接线盒进行处理。 interface cable. For output the wires out of the connector case, need to process the connector case.
Page 84 NX-300 ADJUSTMENT Radio Check Section Condition Measurement Adjustment Speciﬁ cations / Item Test- Remarks Panel test mode PC test mode Unit Terminal Unit Parts Method equipment 1. Frequency 1) CH-Sig: 1-1 1) Test Channel f. counter Panel Check an internal +0.05/+0.55ppm...
Page 85 NX-300 调整通信机检查部分条件测量调整项目规格 / 备注面板测试模式 PC 测试模式测量装置单元端子单元部件方法 1. 频率检查 1) CH-Sig:1-1 1) 测试信道频率计数面板天线确认手持对讲机 +0.05/+0.55ppm PTT: 开启...
Page 86 NX-300 ADJUSTMENT Condition Measurement Adjustment Speciﬁ cations / Item Test- Remarks Panel test mode PC test mode Unit Terminal Unit Parts Method equipment 5. Sensitivity 1) CH-Sig: 1-1 1) Test Channel Check 12dB SINAD or check SSG output Channel: 1...
Page 87 NX-300 调整条件测量调整项目规格 / 备注面板测试模式 PC 测试模式测量装置单元端子单元部件方法 5. 灵敏度 1) CH-Sig:1-1 1) 测试信道天线检查 12dB SINAD 或更高检查 SSG 输出...
Page 88 NX-300 ADJUSTMENT Condition Measurement Adjustment Speciﬁ cations / Item Test- Remarks Panel tuning mode PC test mode Unit Terminal Unit Parts Method equipment 4. Clockwise 1) Adj item: [VOL2] 1) Adj item: [Clock- Panel [Panel tuning mode] This item is needed Volume Adjust: [✳✳✳]...
Page 89 NX-300 调整条件测量调整项目规格 / 备注面板调谐模式 PC 测试模式测量装置单元端子单元部件方法 4. 顺时针 1) 调整项目 :[VOL2] 1) 调整项目 : 面板更换可变电阻器 [ 面板调谐模式 ] 音量...
Page 90 NX-300 ADJUSTMENT Condition Measurement Adjustment Speciﬁ cations / Item Test- Remarks Panel tuning mode PC test mode Unit Terminal Unit Parts Method equipment 7. Frequency * The Frequency 1) Adj item: Panel Panel [Side1] [PC test mode] [PC test mode]...
Page 91 NX-300 调整条件测量调整项目规格 / 备注面板调谐模式 PC 测试模式测量装置单元端子单元部件方法 7. 频率调整 * 频率调整只能在 PC 1) 调整项目 : 面板天线面板 [Side1] [PC 测试模式 ] [PC 测试模式...
Page 92 NX-300 ADJUSTMENT Condition Measurement Adjustment Speciﬁ cations / Item Test- Remarks Panel tuning mode PC test mode Unit Terminal Unit Parts Method equipment 3. Balance 1) Adj item: [BAL] 1) Adj item: [Balance] Deviation Panel Panel [Panel The Deviation of...
Page 93 NX-300 调整条件测量调整项目规格 / 备注面板调谐模式 PC 测试模式测量装置单元端子单元部件方法 3. 平衡调整 1) 调整项目 :[BAL] 1) 调整项目 : 频偏仪面板天线面板 20Hz 频率的频偏固...
Page 94 NX-300 ADJUSTMENT Condition Measurement Adjustment Speciﬁ cations / Item Test- Remarks Panel tuning mode PC test mode Unit Terminal Unit Parts Method equipment 5. Maximum 1) Adj item: [An ADEV] 1) Adj item: [Maximum Deviation Panel Panel [Panel Write the same...
Page 95 NX-300 调整条件测量调整项目规格 / 备注面板测试模式 PC 测试模式测量装置单元端子单元部件方法 5. 最大频偏 1) 调整项目 : 1) 调整项目 : 频偏仪面板天线面板为每个调整点写入 2050~2150Hz [ 面板调...
Page 96 NX-300 ADJUSTMENT Condition Measurement Adjustment Speciﬁ cations / Item Test- Remarks Panel tuning mode PC test mode Unit Terminal Unit Parts Method equipment 7. DQT 1) Adj item: [An DQT] 1) Adj item: [DQT Deviation Panel Panel [Panel Write the value as 0.35kHz±0.05kHz...
Page 97 NX-300 调整条件测量调整项目规格 / 备注面板调谐模式 PC 测试模式测量装置单元端子单元部件方法 7. DQT 1) 调整项目 : 1) 调整项目 :[DQT 频偏仪面板天线面板写入以下值。 0.35kHz±0.05kHz [ 面板调...
Page 98 NX-300 ADJUSTMENT Condition Measurement Adjustment Speciﬁ cations / Item Test- Remarks Panel tuning mode PC test mode Unit Terminal Unit Parts Method equipment 10. Single 1) Adj item: [An TONE] 1) Adj item: [Single Deviation Panel Panel [Panel Write the value as 1.50kHz±0.05kHz...
Page 99 NX-300 调整条件测量调整项目规格 / 备注面板调谐模式 PC 测试模式测量装置单元端子单元部件方法 10. 单音 1) 调整项目 : 1) 调整项目 :[Single 频偏仪面板天线面板写入以下值。 1.50kHz±0.05kHz [ 面板调...
Page 100 NX-300 ADJUSTMENT Condition Measurement Adjustment Speciﬁ cations / Item Test- Remarks Panel tuning mode PC test mode Unit Terminal Unit Parts Method equipment 13. VOX1 1) Adj item: [VOX1] 1) Adj item: [VOX1] Panel Universal [Panel tuning mode] adjust Adjust: [✳✳✳]...
Page 101 NX-300 调整条件测量调整项目规格 / 备注面板调谐模式 PC 测试模式测量装置单元端子单元部件方法 13.VOX1 1) 调整项目 :[VOX1] 1) 调整项目 :[VOX1] 面板通用连 [ 面板调谐模式 ] 调整调整 :[✳✳✳] AG:MIC 端子处...
Page 102 NX-300 ADJUSTMENT ■ Necessary Deviation adjustment item for each signaling and mode The following shows the necessary adjustment items for each signaling deviation. Please read the following table like the following example. In the case of the signaling “QT (Wide)”, this signaling is composed of three elements [Balance, Maximum Deviation (Analog Wide) and QT Deviation (Wide)].
Page 103 NX-300 调整 ■各信令和模式所需的频偏调整项目下表显示了各信令频偏所需的调整项目。请按照以下示例阅读下表。对于信令“QT( 宽 )” ，该信令包含三个组成部分 [ 平衡，最大频偏 ( 模拟宽 ) 和 QT 频偏 ( 宽 )]。请在调整 QT 频偏 ( 宽 ) 之前调整平衡和最大频偏 ( 模拟宽 )。所需的调整和顺序模式信令宽窄超窄步骤 1. 平衡调整步骤 1. 平衡调整...
Page 104 NX-300 ADJUSTMENT Receiver Section Condition Measurement Adjustment Speciﬁ cations / Item Test- Remarks Panel tuning mode PC test mode Unit Terminal Unit Parts Method equipment 1. AF level [Panel test mode] 1) Test Channel Panel Panel Volume Turn the Volume 0.63V±0.1V...
Page 105 NX-300 调整接收机部分条件测量调整项目规格 / 备注面板测试模式 PC 测试模式测量装置单元端子单元部件方法 1. AF 1) 测试信道面板天线面板音量转动音量旋钮以获 0.63V±0.1V [ 面板测试模式 ] 电平设置...
Page 106 NX-300 ADJUSTMENT Condition Measurement Adjustment Speciﬁ cations / Item Test- Remarks Panel tuning mode PC test mode Unit Terminal Unit Parts Method equipment 3. Sensitivity 2 1) Adj item: [SENS2] 1) Adj item: Panel Panel [Panel Decrease the adjust Adjust: [✳✳✳]...
Page 107 NX-300 调整条件测量调整项目规格 / 备注面板调谐模式 PC 测试模式测量装置单元端子单元部件方法 3. 灵敏度 2 1) 调整项目 :[SENS2] 1) 调整项目 : 面板天线面板从预设值 (256) 减...
Page 108 NX-300 ADJUSTMENT Condition Measurement Adjustment Speciﬁ cations / Item Test- Remarks Panel tuning mode PC test mode Unit Terminal Unit Parts Method equipment RSSI 1) Adj item: [Nv 1) Adj item: [RSSI Ref- Panel [Panel tuning mode] Adjust with the ana-...
Page 109 NX-300 调整条件测量调整项目规格 / 备注面板调谐模式 PC 测试模式测量装置单元端子单元部件方法 RSSI 1) 调整项目 : 1) 调整项目 :[RSSI 面板天线用模拟信号进行调 [ 面板调谐模式 ] 基准调整...
Page 110 NX-300 ADJUSTMENT Condition Measurement Adjustment Speciﬁ cations / Item Test- Remarks Panel tuning mode PC test mode Unit Terminal Unit Parts Method equipment 6. Low RSSI 1) Adj item: [An 1) Adj item: [Low RSSI Panel [Panel tuning mode] at –118dBm...
Page 111 NX-300 调整条件测量调整项目规格 / 备注面板调谐模式 PC 测试模式测量装置单元端子单元部件方法 6. –118dBm 1) 调整项目 : 1) 调整项目 :[Low 面板天线 [ 面板调谐模式 ] 低 RSSI...
Page 112 NX-300 ADJUSTMENT Condition Measurement Adjustment Speciﬁ cations / Item Test- Remarks Panel tuning mode PC test mode Unit Terminal Unit Parts Method equipment 7. High RSSI 1) Adj item: [An 1) Adj item: [High Panel [Panel tuning mode] at –80dBm...
Page 113 NX-300 调整条件测量调整项目规格 / 备注面板调谐模式 PC 测试模式测量装置单元端子单元部件方法 7. –80dB 1) 调整项目 : 1) 调整项目 :[High 面板天线 [ 面板调谐模式 ] 高 RSSI...
Page 114 NX-300 ADJUSTMENT Condition Measurement Adjustment Speciﬁ cations / Item Test- Remarks Panel tuning mode PC test mode Unit Terminal Unit Parts Method equipment 8. Tight 1) Adj item: [An SQLT] 1) Adj item: [Tight Panel [Panel tuning mode] Squelch Adjust: [✳✳✳]...
Page 115 NX-300 调整条件测量调整项目规格 / 备注面板调谐模式 PC 测试模式测量装置单元端子单元部件方法 8. 静噪深 1) 调整项目 : 1) 调整项目 :[Tight 面板天线 [ 面板调谐模式 ] 调整...
Page 116: Terminal Function
NX-300 端子功能 TERMINAL FUNCTION / 控制单元 (X53-4262-72) Control unit (X53-4262-72) 管脚号码名称输入 / 输出功能 Pin No. Name Function 输出芯片选择输出 Chip select output /RES 输出 LCD 复位输出 /RES LCD reset output 输出地址总线 0 输出 Address bus 0 output 输出...
Page 117 NX-300 端子功能 TERMINAL FUNCTION / 管脚号码名称输入 / 输出功能 Pin No. Name Function Power output after passing through the 输出通过保险丝后的电源输出 fuse 输入电源开关后的电源输入 Power input after power switch CN404 CN404 LED_G 输出绿色 LED 控制输出...
Page 118 NX-300 端子功能 TERMINAL FUNCTION / 管脚号码名称输入 / 输出功能 Pin No. Name Function 输入热敏电阻电压输入 Thermistor voltage input 输入 PLL 锁定检测输入 PLL lock detect input 输出 38M 输出 38M output SCK1 输出 PLL 锁定输出 SCK1 PLL clock output S_DET 输入...
Page 119 NX-300 端子功能 TERMINAL FUNCTION / 管脚号码名称输入 / 输出功能 Pin No. Name Function OPT2 输入 / 输出 OPT2 输出 RXEO 输出 RXEO Refer to “CN710 26-pin connector 请参阅第 124 至 129 页介绍的 RXEI 输入 RXEI speciﬁ cation” described on pages “CN710 26 针连接器规格”...
Page 120 NX-300 端子功能 TERMINAL FUNCTION / 管脚号码名称输入 / 输出功能 Pin No. Name Function Side_G 输入键矩阵输入 (SIDE1，2 键 ) Side_G Key matrix input (SIDE1,2 key) Side_1 输出键矩阵输出 (SIDE1 键 ) Side_1 Key matrix output (SIDE1 key) W_/N 输入...
Page 121 NX-300 端子功能 TERMINAL FUNCTION / 管脚号码名称输入 / 输出功能 Pin No. Name Function OPT8 输入 / 输出 OPT8 OPT11 输入 OPT11 OPT7 输入 / 输出 OPT7 OPT2 输入 / 输出 OPT2 Refer to “CN737 Option board 输入...
Page 122 NX-300 端子功能 TERMINAL FUNCTION / Universal connector Rating and Condition Signal Pin No. Name I/O Function Type Parameter Unit EXT/INT speaker switch input Digital L: External speaker ON H: Internal speaker ON [8Ω load] Max output power (1kHz, Battery voltage=7.5V)
Page 123 NX-300 端子功能 TERMINAL FUNCTION / 通用连接器额定值和条件输入 / 管脚号码名称信号类型功能输出参数最小标准最大单位 EXT/INT 扬声器开关输入输入数字 L: 外部扬声器 ON H: 内部扬声器 ON [8Ω 负载 ] 最大输出功率 (1kHz，电池电压 =7.5V) 输出模拟...
Page 124 NX-300 端子功能 TERMINAL FUNCTION / CN710 26-pin connector speciﬁ cation Rating and Condition Pin No. Name Signal Type Parameter Unit OPT1 [Input] VIH OPT4 [Input] VIL OPT5 Digital [Output] VOH OPT8 [Output] VOL OPT11 OPT3 [Input] VIH OPT7 [Input] VIL...
Page 125 NX-300 端子功能 TERMINAL FUNCTION / CN710 26 针连接器规格额定值和条件管脚号码名称输入 / 输出信号类型参数最小标准最大单位 OPT1 [ 输入 ] VIH OPT4 [ 输入 ] VIL OPT5 输入 / 输出数字 [ 输出 ] VOH OPT8 [ 输出...
Page 126 NX-300 端子功能 TERMINAL FUNCTION / Rating and Condition Pin No. Name Signal Type Parameter Unit Output Amplitude (1kHz, 60% deviation) mVp-p Coupling Capacitor µF RXEO Analog Output Impedance 2.2k Ω Allowable Frequency 3000 Input Amplitude (1kHz, 60% deviation) mVp-p Coupling Capacitor µF...
Page 127 NX-300 端子功能 TERMINAL FUNCTION / 额定值和条件管脚号码名称输入 / 输出信号类型参数最小标准最大单位输出振幅 (1kHz,，60% 频偏 ) mVp-p 耦合电容 µF RXEO 输出模拟输出阻抗 2.2k Ω 容许频率 3000 输入振幅 (1kHz,，60% 频偏 ) mVp-p 耦合电容...
Page 128 NX-300 端子功能 TERMINAL FUNCTION / Pin No. Name Device Connection Function ANI board 26P_TD VGS-1 Serial data output ANI board PTT signal output OPT4 VGS-1 Enable ANI board OPT10 VGS-1 USEL UART speed select output ANI board Emergency Emergency signal output...
Page 129 NX-300 端子功能 TERMINAL FUNCTION / 管脚号码名称装置输入 / 输出连接功能 ANI 板 26P_TD VGS-1 输出串行数据输出 ANI 板输出 PTT 信号输出 OPT4 VGS-1 输出启用 ANI 板 OPT10 VGS-1 输出 USEL UART 速度选择输出...
Page 130 NX-300 端子功能 TERMINAL FUNCTION / CN737 Option board connector speciﬁ cation Pin No. Name Device Connection Function [COR] Conv/LTR L: Activity receiving H: Not activity receiving [TOR] Conv/LTR L: Activity receiving (Sub Tone or LTR ID is OK) OPT1 ANI board...
Page 131 NX-300 端子功能 TERMINAL FUNCTION / CN737 选件板连接器规格管脚号码名称装置输入 / 输出连接功能 [COR] 常规 /LTR L: 接收 H: 无接收 [TOR] 常规 /LTR L: 接收 (Sub Tone 或 LTR ID OK) OPT1 ANI 板...
Page 132: Pc Board
NX-300 板 PC BOARD / PC CONTROL UNIT (X53-4262-72) Component side view (J79-0131-39) J79-0131-29 Ref. No. Address Ref. No. Address Ref. No. Address IC415...
Page 133 NX-300 板 PC BOARD / PC CONTROL UNIT (X53-4262-72) Component side view (J79-0131-39) CN22 CN23 /RES R406 C452 R500 CN24 Component side Layer 1 Layer 2 Layer 3 Layer 4 Layer 5 Layer 6 Foil side...
Page 134 NX-300 板 PC BOARD / PC CONTROL UNIT (X53-4262-72) Foil side view (J79-0131-39) R402 D409 L719 R472 R496 R442 C429 Q405 L410 R474 C440 IC413 C415 + R462 L401 R133 R489 C437 C416 R132 R471 C438 R490 R495 C806 C424...
Page 135 NX-300 板 PC BOARD / PC CONTROL UNIT (X53-4262-72) Foil side view (J79-0131-39) R735 Q102 Q101 C712 R750 R112 R117 R114 R745 IC707 C115 R106 R793 C717 C722 R829 C767 R758 R755 R108 R753 C745 L710 C108 C118 D101 R847...
Page 136: Tx-Rx Unit (X57-7370-11)
NX-300 板 PC BOARD / PC TX-RX UNIT (X57-7370-11) (A/2) Component side view (J79-0128-39 A/2) C630 C646 C640 R652 R653 R641 Q504 Q607 L503 C542 R538 C533 C653 R659 R660 R657 C987 C534 R566 R664 R534 R531 L530 C543 R658...
Page 137 NX-300 板 PC BOARD / PC TX-RX UNIT (X57-7370-11) (A/2) Component side view (J79-0128-39 A/2) C640 R648 R651 C641 C945 Side_G Side_1 R654 C971 C943 Side_2 C636 R655 TX-RX UNIT C913 C976 R921 (X57-7370-11) (B/2) Q608 Q905 R922 R659 C964...
Page 138 NX-300 板 PC BOARD / PC TX-RX UNIT (X57-7370-11) (A/2) Foil side view (J79-0128-39 A/2) C988 L614 TX-RX UNIT (X57-7370-11) (B/2) C609 C668 C665 CN601 J79-0128-39 B/2 L612 C663 CN600 C662 C664 D709 C954 26 POW OPT6 C803 D711 RXEI...
Page 139 NX-300 板 PC BOARD / PC TX-RX UNIT (X57-7370-11) (A/2) Foil side view (J79-0128-39 A/2) C645 C643 L610 R575 C648 L514 C642 C556 C557 R646 C632 L516 L515 C635 C547 L517 C545 D517 R559 D515 L509 C566 Q606 L518 L519...
Page 140: Interconnection Diagram
NX-300 互连图 INTERCONNECTION DIAGRAM / POWER SW/ CHANNEL SWITCH UNIT AF VOL SELECTOR X41-372 6KEY/SP/MIC CN403 CN23 /RES CONTROL PCB X53-426 CN701 CN710 CN405 CN737 UNIVERSAL CONNECTOR OPTION PCB X57-737 B/2...
Page 141 NX-300 互连图 INTERCONNECTION DIAGRAM / CORD ASSY CN404 CN900 X42-334 LED_G LED_G /EMG /EMG LED_R LED_R /SAVE /SAVE I2CCK I2CCK /5TC /5TC I2CSDA I2CSDA /T_R /T_R ASSIST ASSIST SWITCH UNIT VAGC VAGC X41-371 TCXO_MOD TCXO_MOD PGND CN901 RSSI RSSI PGND...
Page 142: Schematic Diagram
NX-300 原理图 SCHEMATIC DIAGRAM / CONTROL UNIT (X53-4262-72) R406 /LCDRST IC402 R407 TC7WZ245FK-F LCD CONTRAST NJM2130F3-ZB R408 IC401 TC74LCX245FK -7.13V 3.28V 100p C402 0.1u /CS4 C405 2.2u16 IC401,402 BUS SW IC403 -9.74V LM2682MMX C403 4.92V 2.2u16 C401 R409 0.1u L707...
Page 143 NX-300 原理图 SCHEMATIC DIAGRAM / CONTROL UNIT (X53-4262-72) X2_CLKIN L712 R126 100 MCDIAF R127 0 DVSS7 R128 0 BCLKX1 MCSCKAF R135 100k CVSS8 FSDET CVDD5 C119 1u R141 100k INT3 INT3 CVSS9 INT2 DVDD5 C101 INT1 /DINT R150 1k 0.1u...
Page 144 NX-300 原理图 SCHEMATIC DIAGRAM / CONTROL UNIT (X53-4262-72) GPIo7 ASQDET AUD_IREFC X2_CLKIN AD12_IREFF R158 XTALI XTALo CN104 DSPCK /RINT USRCKI ADD0 ADD1 ADD2 ADD3 ADD4 ADD5 L713 ADD6 ADD7 IC107 BUFFER ADD8 SM5023CNDH-G X102 ADD9 18.432MHz ADD10 C130 ADD11 oUTPUT 0.01u...
Page 145 NX-300 原理图 SCHEMATIC DIAGRAM / CONTROL UNIT (X53-4262-72) GPIo7 GPIo7 33A-1 IC108 ASIC R470 IFADCN 33MAS 33MAS 33A-1 33A-1 SPCS10 SPCS10 RESET X53-426 4/10...
Page 146 NX-300 原理图 SCHEMATIC DIAGRAM / CONTROL UNIT (X53-4262-72) C459 GPIo7 L101 470p 33A-1 C460 L102 VOL SW/ENC 6800p C461 POWER SW/AF VOL 470p DGND3 CN403 R501 DGND2 DGND1 2.2k L714 R506 VOL_GND DVDIo7 L403 2.2k L716 DVDIo6 DVDIo5 R510 CHANNEL SELECTOR...
Page 147 NX-300 原理图 SCHEMATIC DIAGRAM / CONTROL UNIT (X53-4262-72) D702 R819 MA2S111-F R790 CONTROL ASQDET Q701 R798 100k 2SA1832(GR)F C719 OPT10 C755 47p 0.1u R803 OPT SW R747 ASQ DET NOISE ASQAPC IC711 DETECTOR TC75W51FK(F) D705 R824 SQL BPF/ RB706F-40 R739...
Page 148 NX-300 原理图 SCHEMATIC DIAGRAM / CONTROL UNIT (X53-4262-72) R : 5.14V Q406 Q406,407 2SB1132(Q,R) R471 VOLTAGE REGULATOR (AF AMP) R496 100k Q407 UMG3N Q405 IC413 AUDIO AF AMP SW TPA6201A1DRBR R459 SHUTDoWN Q405 C440 0.1u SSM6N16FE-F BYPASS C437 R489 D409 0.056u...
Page 149 NX-300 原理图 SCHEMATIC DIAGRAM / CONTROL UNIT (X53-4262-72) SWITCH UNIT (X41-3720-10) CN23 AGND R20 1k 6_/KEYI0 6_/KEYI0 R21 1.2k BL_SB BL_SB R22 1k 6_KEYO1 6_KEYO1 6KEY R23 1k 6_KEYO0 6_KEYO0 R25 1.2k BL_SB R24 1k 6_KEYO2 6_KEYO2 R26 1k 6_/KEYI1...
Page 150 NX-300 原理图 SCHEMATIC DIAGRAM / CONTROL UNIT (X53-4262-72) D405,406,IC407 VOLTAGE REGULATOR (33M) DC/DC CONVERTER L402 L401 IC404 XC6204B332D 3.284V VOUT R438 3.82V 100k L702 IC407 R456 LT1616ES6-PBF 470k R439 D416 100k Q402 R548 47K SSM6N16FE-F D416 LEVEL CONVERTER 33A CONTROL...
Page 151 NX-300 原理图 SCHEMATIC DIAGRAM / CONTROL UNIT (X53-4262-72) DC SW DC SW POWER SUPPLY CN402 7.49V Q414 Q415 EMD12 EMD12 BATT INT 7.49V 6.05V DC SW IC414 CN404 XC61CC5602NR D408 Q408 R511 1k LED_G EMD12 LED_G DC/DC RESET CONVERTER R512 100...
Page 152 NX-300 原理图 SCHEMATIC DIAGRAM / TX-RX UNIT : (X57-7370-11) (A/2) R590 10k R589 10k CN900 SWITCH UNIT LED_G (X41-3710-10) LED_G CN901 C904 47p R928 /EMG /PTT C905 47p Side_G LED_R Side_G LED_R SIDE 1 Side_1 C906 47p Side_1 TX/RX LED...
Page 153 NX-300 原理图 SCHEMATIC DIAGRAM / TX-RX UNIT (X57-7370-11) (A/2) /T R C543 L504 C525 C553 R577 R550 C588 R583 IC500 TEMPERATURE SENSOR IC500 LM73CIMKX-0 R572 C514 I2CCK SMBCLK IC502 C515 0.01u ALERT SKY72300-362 R955 I2CSDA SMBDAT ADDR 0.01u PLL IC...
Page 154 NX-300 原理图 SCHEMATIC DIAGRAM / TX-RX UNIT (X57-7370-11) (A/2) TH600 100k -t ° CN600 CN601 DRIVE AMP C621 L605 Q602 R628 R620 C670 2SK3077F 470p R : 5mV PRE-DRIVE AMP T : 0.99V R : 4.75V R : 2.5mV Q601 BUFFER AMP T : 4.8V...
Page 155 NX-300 原理图 SCHEMATIC DIAGRAM / TX-RX UNIT (X57-7370-11) (A/2) R : 0.5mV RF FINAL AMP ANTENNA SWITCH T : 1.615V Q606 L903 D606 L612 L613 L614 Strip line R : 12mV RD07MVS1BT122 6.8n HVC131 C660 C663 T : 2.10V PRE-FINAL AMP...
Page 156: Block Diagram
NX-300 NX-300 BLOCK DIAGRAM / 方块图 Control unit (X53-4262-72) X102 18.432MHz SM5023CNDH-G IC107 TCXO IC101 IC103 Flash SRAM IC102 /DRST,DCLK,/SYMTIM,/RSSITIM, /DINT,/SWUP,FSDET,/HINT IC401 TC74LCX245FK MCD1AF,/MCSCKAF,/MCCSAF,MCD0AF,MCD1CN, BUS SW IC402 TC7WZ245FK-F /MCCXCN,/MCD0CN,/MCCSRCN,MCSCKCN D0~15,A0~20,/RD,/WR,/CS0,/CS2,/CS3,/CS4/HDS2,/HRDY /LCDRST TXD0 RXD0 IC703 RTS0 M62364FP-F(7/8) CTS0 LCDCNT /PTT IC105...
Page 157 NX-300 NX-300 BLOCK DIAGRAM / 方块图 L401 , D406 , D405 IC404 XC6204B332D IC407 LT1616ES6-PBF DCDC Converter IC717 D408 Q402 SSM6N16FE-F XC9235A15CM1 1SS301F DCDC DCSW /PSW Q408 IC414 Q401 SSM6N16FE-F EMD12 XC61CC5602NR IC406 RESET /BINT XC6204B332M IC416 S-812C31BPI-G DCSW SCTAM1...
Page 158 NX-300 方块图 BLOCK DIAGRAM / TX-RX unit (X57-7370-11) CN900 Q507 I2CCK 2SC5383-T111 I2CSDA Ripple Filter IC500 Q510 SSM6L05FU-F /T_R LM73CIMKX-0 Q511 2SJ347F Temp. IC502 Q512 Q600 Sensor SKY72300-362 2SC5636 2SC5636 TCXO_MOD Loop BUFF BUFF TCXO Filter X500 19.2MHz IC501 TLV2381IDBV...
Page 159 NX-300 方块图 BLOCK DIAGRAM / TX/RX: 400~470MHz D606,607 D600,601 Q601 Q602 Q603 Q606 D709,711 HSC277x2 2SC5636 2SK3077F RD01MUS1-T113 RD07MVS1BT122 HVC131x4 Pre- Pre- Drive Final Drive Final Q610 EMD5 Q604 DC SW DC SW /APCSW 2SC5383-T111 /DSW IC600 TA75W01FUF 150C Q607...
Page 160: Level Diagram
NX-300 电平图 LEVEL DIAGRAM /...
Page 161: Optional Accessories
NX-300 可选附件 OPTIONAL ACCESSORIES / KNB-47L (Li-ion Battery Pack / 锂离子电池 ) ■ External View / 外视图 ■ Schematic Diagram / 电路图 DISCHARGING TERMINALS 560kΩ Thermal switch (Breaker) PROTECTION CIRCUIT THERMISTOR 10kΩ ±0.5% DIODE CHARGING TERMINALS ■ Speciﬁ cations / 规格...
Page 162: Specifications
Modulation Distortion ........Less than 3% Modulation ............Analog @25kHz: 16K0F3E Analog @12.5kHz: 8K50F3E Digital @12.5kHz: 8K30F1E Digital @6.25kHz: 4K00F1E Analog measurement made per TIA/EIA 603 and speciﬁ cations shown are typical. KENWOOD reserves the right to change speciﬁ cations without prior notice or obligation.
Page 163: 规格
NX-300 规格通用频率范围........ 400~470MHz 信道数量........ 512 区域分区数量......128 每区域最大信道数量...... 250 信道间隔........ 模拟 :12.5/25 kHz 数字 :6.25/12.5 kHz 工作电源电压......7.5V DC ± 20% 电池使用时间 ( 使用 KNB-47L 电池时 ) ..5-5-90 工作循环 : 大于 11 小时 10-10-80 工作循环 : 大于 7 小时...
Page 164 Unit 3712-3724, Level 37, Tower one Metroplaza, 223 Hing Fong Road, Bp 58416 Villepinte, 95944 Roissy Ch De Gaulle Cedex Kwai Fong, N.T., Hong Kong KENWOOD House, Dwight Road, Watford, Herts., 1 Ang Mo Kio Street 63, Singapore 569110 WD18 9EB United Kingdom...
Page 165 NX-300 NX-300 板板 PC BOARD / PC PC BOARD / PC CONTROL UNIT (X53-4262-72) CONTROL UNIT (X53-4262-72) Component side view (J79-0131-39) Component side view (J79-0131-39) CN22 CN23 /RES R406 C452 R500 CN24 J79-0131-29 Component side Ref. No. Address Ref. No. Address Ref.
Page 166 NX-300 NX-300 板板 PC BOARD / PC PC BOARD / PC CONTROL UNIT (X53-4262-72) CONTROL UNIT (X53-4262-72) Foil side view (J79-0131-39) Foil side view (J79-0131-39) R402 R735 D409 L719 R472 Q102 Q101 C712 R496 R112 R750 R117 R114 R745...
Page 167 NX-300 NX-300 板板 PC BOARD / PC PC BOARD / PC TX-RX UNIT (X57-7370-11) (A/2) TX-RX UNIT (X57-7370-11) (A/2) Component side view (J79-0128-39 A/2) Component side view (J79-0128-39 A/2) C630 C646 C640 R648 R652 R651 R653 C641 R641 C945...
Page 168 NX-300 NX-300 板板 PC BOARD / PC PC BOARD / PC TX-RX UNIT (X57-7370-11) (A/2) TX-RX UNIT (X57-7370-11) (A/2) Foil side view (J79-0128-39 A/2) Foil side view (J79-0128-39 A/2) C645 C643 L610 R575 C648 L514 C642 C556 C988 C557...
Page 169 SWITCH UNIT (X41-3720-10) TX-RX UNIT : (X57-7370-11) (A/2) GPIo7 GPIo7 GPIo7 GPIo7 C459 DC SW DC SW TH600 RF FINAL AMP R : 0.5mV ANTENNA SWITCH L101 470p CN23 VOLTAGE REGULATOR (33M) D405,406,IC407 POWER SUPPLY CN402 7.49V R590 10k 100k R : 12mV RD07MVS1BT122 Q606...
Page 170 Control unit (X53-4262-72) IC404 L401 , D406 , D405 XC6204B332D IC407 LT1616ES6-PBF X102 DCDC 18.432MHz Converter SM5023CNDH-G IC107 TCXO IC717 D408 Q402 SSM6N16FE-F XC9235A15CM1 1SS301F IC101 IC103 DCDC DCSW /PSW Flash Q408 IC414 SRAM Q401 SSM6N16FE-F IC102 EMD12 XC61CC5602NR IC406 /BINT RESET XC6204B332M...
Page 171 TX-RX unit (X57-7370-11) CN900 Q507 I2CCK 2SC5383-T111 I2CSDA Ripple TX/RX: 400~470MHz Filter IC500 Q510 SSM6L05FU-F /T_R LM73CIMKX-0 D606,607 Q511 2SJ347F Temp. IC502 Q512 Q600 D600,601 Q601 Q602 Q603 Q606 D709,711 Sensor SKY72300-362 2SC5636 2SC5636 HSC277x2 2SC5636 2SK3077F RD01MUS1-T113 RD07MVS1BT122 HVC131x4 Pre- Pre- TCXO_MOD...
Page 172 POWER SW/ CHANNEL SWITCH UNIT AF VOL SELECTOR X41-372 6KEY/SP/MIC CORD ASSY CN403 CN23 CN404 CN900 X42-334 LED_G LED_G /EMG /EMG LED_R LED_R /SAVE /SAVE I2CCK I2CCK /5TC /5TC I2CSDA I2CSDA /T_R /T_R ASSIST ASSIST SWITCH UNIT VAGC VAGC X41-371 /RES TCXO_MOD TCXO_MOD...

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