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Kenwood TK-8108 Service Manual
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Kenwood TK-8108 Service Manual

Kenwood TK-8108 Service Manual

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UHF FM TRANSCEIVER / UHF调频对讲机
TK-8108
SERVICE MANUAL / 维修手册
GENERAL ................................................................. 2
OPERATING FEATURES ......................................... 5
REALIGNMENT ...................................................... 11
DISASSEMBLY FOR REPAIR ................................ 14
CIRCUIT DESCRIPTION ......................................... 15
SEMICONDUCTOR DATA ..................................... 24
DESCRIPTION OF COMPONENTS ....................... 26
PARTS LIST ............................................................ 29
EXPLODED VIEW ................................................... 37
PACKING ................................................................. 38
Cabinet
Front glass
(A01-2178-02)
(B10-2668-03)
Key top
(K29-9065-01)
CONTENTS
© 2001-7 PRINTED IN JAPAN
B51-8593-00 ( S ) 620
Panel assy
(A62-0942-03)
ADJUSTMENT ........................................................ 39
PC BOARD VIEWS
DISPLAY UNIT (X54-3340-20) ........................... 47
TX-RX UNIT (X57-6303-XX) .............................. 49
SCHEMATIC DIAGRAM ......................................... 55
BLOCK DIAGRAM ................................................... 59
LEVEL DIAGRAM .................................................... 61
TERMINAL FUNCTION .......................................... 63
SPECIFICATIONS................................. BACK COVER
TK-8108

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  • Page 1: Table Of Contents

    TK-8108 UHF FM TRANSCEIVER / UHF调频对讲机 TK-8108 SERVICE MANUAL / 维修手册 © 2001-7 PRINTED IN JAPAN B51-8593-00 ( S ) 620 Cabinet Front glass Panel assy (A01-2178-02) (B10-2668-03) (A62-0942-03) Key top (K29-9065-01) CONTENTS GENERAL ..............2 ADJUSTMENT ............39 OPERATING FEATURES ......... 5 PC BOARD VIEWS REALIGNMENT ............
  • Page 2 TK-8108 目录 概述 ................2 调整 ................39 操作特性 ..............5 PC板视图 模式组合 ..............11 DISPLAY UNIT (X54-3340-20) ......47 维修时拆卸部件 ............14 TX-RX UNIT (X57-6303-XX) ....... 49 电路说明 ..............15 原理图 ..............55 半导体数据 .............. 24 方块图 ..............59 元件说明...

  • Page 3: 4-1. General

    安装前条件 PRE-INSTALLATION CONSIDERNATIONS 1. 开箱 1. UNPACKING 从运输包装中取出本无线电设备并检查附件。 如果有任何组 Unpack the radio from its shipping container and check 件遗失，请立即与 KENWOOD 联系。 for accessory items. If any item is missing, please contact KENWOOD immediately. 2. 所需许可证 2. LICENSING REQUIREMENTS 联邦法规要求设备所有者必须使每一个安装无线电的地点 Federal regulations require a station license for each ra- （移动站或基站）获得许可证。持有许可证者必须确保发射功...
  • Page 4 Control station. The antenna system selection depends 户的KENWOOD销售商可以帮助用户选择最能满足用户特殊要 on many factors and is beyond the scope of this manual. 求的天线系统。 Your KENWOOD dealer can help you select an antenna sys- tem that will best serve your particular needs. 5-2. 无线电位置 5-2. Radio location 为用户的基站无线电设备选择一个方便的位置，...
  • Page 5 TK-8108 操作特性 1-4. 显示 1. 控制和功能 1-1. 前面板 q w e 指示灯 说明 发射时点亮。 1-2. 麦克风 在当前选择的频道上检测到信号时点 亮。 当编程到对应键的功能开启时点亮。 当编程到对应键的功能开启时点亮。 点亮显示当前选择的频道（1〜4或５〜 ８）。 1-5. 后面板 (电源) 开关 按此键可以接通对讲机的电源。按下并且保持大约1秒钟， 可以切断对讲机的电源。 w ▲ 键 按此键可以升高音量。 e ▼ 键 按此键可以降低音量。 天线连接器 外部扬声器插孔 r ● 键...

  • Page 6: Operating Features

    TK-8108 OPERATING FEATURES / 操作特性 2. 操作特性 2. Operation Features TK-8108是一种被设计为在常规格式下进行操作的UHF FM The TK-8108 is a UHF FM radio designed to operate in 无线电设备。可编程特性摘要如下。 conventional format. The programmable features are sum- marized. 3. 车载台控制和指示灯 3. Transceiver Controls and Indicators 3-1. 前面板控制...
  • Page 7 TK-8108 OPERATING FEATURES / 操作特性 • 脱网 • Talk around 按该键，车载台将使用脱网频率。 Press this key, the transceiver uses the receive fre- 使用者可直接呼叫对方（不需要转发器）。再次按该键将关 quency and the tone for transmission. 闭脱网功能。 The operator can call the other party directly (without re- peater). Press this key again, the talk around function goes off.
  • Page 8 TK-8108 OPERATING FEATURES / 操作特性 ■ Temporary delete ■ 临时删除 可以在扫描进行中暂时消除信道。如果扫描停在不需要的信 It is possible to delete channel temporary during scan. 道 (例如对方的干扰) 上，则可启动消除键 (例如按该键并保持 When scan stops on unnecessary channel for example by 约 1 秒钟)，该信道将被暂时消除并立即重新启动扫描。 interference of the other party, activate the delete function 当收发机关闭或扫描功能关闭时，暂时删除的信道将返回到...
  • Page 9 TK-8108 OPERATING FEATURES / 操作特性 ■ Clear to transpond ■ 加强自动应答 如果信道直到打开均繁忙，车载台将等待DTMF应答。此特 The transceiver waits the transpond of DTMF if channel 性防止干扰到对方。 is busy until channel open. This feature prevents the inter- ference to other party. 6. 可选信令 (DTMF) 6. Option Signalling (DTMF) 内置DTMF解码器对可选信令有效。...
  • Page 10 TK-8108 OPERATING FEATURES / 操作特性 ■ Stun ■ 遥毙 遥毙代码匹配时将执行预定操作。当遥毙在任何信道匹配 If the stun code matches, a predetermined action will oc- 时，无论可选信令启用与否，车台机都将进入发射禁止或发射/ cur. Whether option signalling is activated or not, when 接收禁止。当遥毙启用时，收到遥毙代码+“#”代码时将禁用 stun matches on any channel, the transceiver will become 遥毙。...

  • Page 11: Realignment

    Figure 1 shows the setup of an IBM PC for programming. 3-2. 连接步骤 3-2. Connection Procedure 1. 使用编程电缆将TK-8108与计算机连接。 1. Connect the TK-8108 to the personal computer with the interface cable. 2. 当接通电源时，可以立即进入用户模式。当计算机发出一个 2. When the Power is switched on, user mode can be en- 指令时，车载台进入计算机编程模式。...
  • Page 12 注释: 启用复制模式。 NOTE: Clone mode should enabled. 1. 按住[1]键打开主 TK-8108的电源，TK-8108的[ ]指示灯亮。 1. Turn the master TK-8108 power ON with the [1] key held 2. 开启子机TK-8108的电源. down. The TK-8108 [ ] LED is turned on. 3. 将数据复制电缆(No. E30-3382-05)连接到主机及从属机的标...
  • Page 13 TK-8108 REALIGNMENT / 模式组合 添加数据密码。 Adding the data password. 如果在特性选择菜单中设定了密码，则在启动复制模式时必 If the data password is set in the optional feature menu, 须输入该密码（主机）。 you must enter the password (Master transceiver) to acti- 密码可以使用数字1、2、3、4，密码的最大长度为 10 个数字。 vate a clone mode. 1. [1]+电源接通。...

  • Page 14: Disassembly For Repair

    TK-8108 DISASSEMBLY FOR REPAIR / 维修时拆卸部件 3. To remove the display unit PCB, detach the PCB by 1. When you remove the panel, turn the transceiver up lifting at the indents of the PCB as shown below. side down. Detach the panel by lifting the tabs as shown below.

  • Page 15: Circuit Description

    TK-8108 CIRCUIT DESCRIPTION / 电路说明 频率构成 Frequency Configuration 接收部采用二次变频超外差方式。第一中频为49.95MHz， The receiver utilizes double conversion. The first IF is 第二中频为450kHz。第一本振频率信号由锁相环电路提供。 49.95MHz and the second IF is 450kHz. The first local oscil- 发射部由锁相环电路直接产生所需要的频率。 图 1 显示各种 lator signal is supplied from the PLL circuit.
  • Page 16 TK-8108 CIRCUIT DESCRIPTION / 电路说明 ■ IF Amplifier ■ 中频放大器 第一中频信号通过 Q19 被放大，然后进入 IC5 (调频处理芯 The first IF signal is amplified by Q19, and the enters IC5 片)。 信号再次与IC5中的第二本振信号混合后产生450kHz的第 (FM processing IC). The signal is heterodyned again with a 二中频信号。 第二中频信号在被放大之前进入450kHz的陶瓷滤...
  • Page 17 TK-8108 CIRCUIT DESCRIPTION / 电路说明 ■ Wide/Narrow Changeover Circuit ■ 宽／窄转换电路 CPU的宽端口 (管脚 92) 和窄端口 (管脚 91) 用于陶瓷滤波器 The Wide port (pin 92) and Narrow port (pin 91) of the 之间的切换。当宽端口为高电平时, 陶瓷滤波器 SW 二极管 CPU is used to switch between ceramic filters. When the (D13, D15) 使...
  • Page 18 TK-8108 CIRCUIT DESCRIPTION / 电路说明 ■ Squelch Circuit ■ 静噪电路 从调频中频芯片(IC5)输出的检测经过噪音放大器 (Q18)检测 The detection output from the FM IF IC (IC5) passes 噪音。向CPU (IC6)输入电压。CPU按照电压(SQIN)电平控制静 through a noise amplifier (Q18) to detect noise. A voltage is 噪。来自于IC5的RSSI管脚的信号被监听。在SQIN电压被输入 applied to the CPU (IC6). The CPU controls squelch accord- 到CPU之前可以识别接收信号的电场强度，并且扫描停止速度...
  • Page 19 TK-8108 CIRCUIT DESCRIPTION / 电路说明 ■ Unlock Circuit ■ 失锁电路 在接收的过程中， 8RC信号为高电平， 8TC信号为低电平， 并 During reception, the 8RC signal goes high, the 8TC sig- 且 Q29 导通。Q31 导通并且向集合器（8R）提供电压。在发射 nal goes low, and Q29 turns on. Q31 turns on and a voltage 过程中，8RC 信号为低电平，8TC 信号为高电平，并且...
  • Page 20 TK-8108 CIRCUIT DESCRIPTION / 电路说明 ■ APC Circuit ■ 自动功率控制电路 自动发射功率控制 (APC) 电路使用一个二极管 (D34，D36) The automatic transmission power control (APC) circuit 检测功率模组输出的一部分，并向IC12提供电压。IC12比较通 detects part of a power module output with a diode (D34, 过数/模转换器 (IC3) 生成的自动功率控制电路控制电压 (PC)， D36) and applies a voltage to IC12. IC12 compares the APC 带有检测输出电压的直流放大器...
  • Page 21 ■ Key Matrix Circuit ■ 按键矩阵电路 TK-8108 的前端面板有功能键。每一个按键被连接到微处理 The TK-8108 front panel has function keys. Each of them 器的 KMI1 到 KMO2 端口矩阵的一个交叉点。当 KMI1 到 KMI4 is connected to a cross point of a matrix of the KMI1 to 端口通常为低电平时，KMO1 到 KMO2 端口通常为高电平。...
  • Page 22 TK-8108 CIRCUIT DESCRIPTION / 电路说明 ■ Encode ■ 编码 从CPU (IC6) 的QT/DQT输出的QT和DQT信号通过总和放大 The QT and DQT signals are output from QT/DQT of the 器 (IC4) 与外置管脚DI线计算总和。获得的信号进入数/模转换 CPU (IC6) and summed with the external pin DI line by the 器 (IC3)。从CPU的DTMF输出的DTMF和信号进入数/模转换器...
  • Page 23 TK-8108 CIRCUIT DESCRIPTION / 电路说明 电源电路 Power Supply Circuit 当按下前面板中的POWER开关时，显示板上与CPU端口18 When the POWER switch on the display unit is pressed, (POWER) 相连接的电源端口为低电平，然后CPU端口93 (SBC) the power port on the display unit which is connected to 为高电平，Q34导通，SB SW (Q42) 导通并向通信机供电 (SB)。 CPU port 18 (POWER), goes low, then CPU port 93 (SBC) 此电路具有过载电压保护电路。如果18V或更高的电压被提...

  • Page 24: Semiconductor Data

    TK-8108 SEMICONDUCTOR DATA Microprocessor : 784214AGC125 (TX-RX Unit IC6) ■ Terminal function Pin No. Name Function Pin No. Name Function FNC8 Function Port8 DTMOSC DTMF IC Clock Control PLLE PLL IC Chip Select MUTE1 AF Mute EVLLD E-Volume LD MUTE2...

  • Page 25: 半导体数据

    TK-8108 半导体数据 Microprocessor : 784214AGC125 (TX-RX单元 IC6) ■ 端子功能 管脚序号 端子名称 功能 管脚序号 端子名称 功能 FNC8 功能端口 8 DTMOSC DTMF IC 时钟控制 PLLE 锁相环 IC 芯片选择 MUTE1 音频静音 EVLLD E-音量 LD MUTE2 扬声器静音 DTMCK DTMF Dec IC 时钟 MUTE3 音频放大开关...

  • Page 26: Display Unit (X54-3340-20)

    TK-8108 DESCRIPTION OF COMPONENTS / 元件说明 显示单元 (X54-3340-20) Display Unit (X54-3340-20) 符号 零件名称 说明 SYMBOL PARTS NAME DISCRIPTION 发光二极管 按键背景灯光 D1~4 KEY BACKLIT D1~4 发光二极管 监听键灯光 MONITOR KEY LIGHT 发光二极管 可编程键灯光 PROGRAMMABLE KEY LIGHT 发光二极管 信道键灯光 D7~10 CHANNEL KEY LIGHT D7~10 发光二极管...
  • Page 27 TK-8108 DESCRIPTION OF COMPONENTS / 元件说明 Ref. No. 使用 / 功能 操作 / 状态 Ref. No. Use/Function Operation/Condition 二极管 天线开关 DIODE ANT SW 二极管 自动功率控制电压检测 DIODE APC VOLTAGE DETECT 二极管 自动功率控制电压检测 DIODE APC VOLTAGE DETECT 二极管 反向电流保护 DIODE REVERSE CONNECT PROTECTION 二极管...
  • Page 28 TK-8108 DESCRIPTION OF COMPONENTS / 元件说明 Ref. No. 使用 / 功能 操作 / 状态 Ref. No. Use/Function Operation/Condition 晶体管 直流开关(SB) TRANSISTOR DC SWITCH(SB) /通电时生效 /Active when power on 晶体管 音频静音 TRANSISTOR AF MUTE /当Mute3是H时生效 /Active while Mute3 is H 晶体管...
  • Page 29 TK-8108 PARTS LIST / 部品表 CAPACITORS CC 45 TH 1H Capacitor value Color* CC45 010 = 1pF 0 = 22pF 100 = 10pF 1 = Type ... ceramic, electrolytic, etc. 4 = Voltage rating Multiplier 2 = Shape ... round, square, ect.
  • Page 30 TK-8108 PARTS LIST / 部品表 ∗ New Parts. indicates safety critical components. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert. TX-RX UNIT (X57-6303-XX) TK-8108 Ref.
  • Page 31 TK-8108 PARTS LIST / 部品表 TX-RX UNIT (X57-6303-XX) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts CC73GCH1H270J CHIP C 27PF C170 CC73GCH1H050B CHIP C 5.0PF CK73GB1H471K CHIP C 470PF C171 CC73GCH1H080B CHIP C 8.0PF...
  • Page 32 TK-8108 PARTS LIST / 部品表 TX-RX UNIT (X57-6303-XX) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts C256 CK73GB1C104K CHIP C 0.10UF C351 CK73GB1H102K CHIP C 1000PF C262 C92-0568-05 CHIP-TAN 22UF 10WV C352,353...

  • Page 33: Tx-Rx Unit (X57-6303-Xx)

    TK-8108 PARTS LIST / 部品表 TX-RX UNIT (X57-6303-XX) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts L40-2785-92 SMALL FIXED INDUCTOR(270NH) RK73GB1J102J CHIP R 1.0K J 1/16W L40-2778-67 SMALL FIXED INDUCTOR(27NH) RK73GB1J754J CHIP R...
  • Page 34 TK-8108 PARTS LIST / 部品表 TX-RX UNIT (X57-6303-XX) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts R104 R92-1252-05 CHIP R 0 OHM R181 RK73GB1J102J CHIP R 1.0K J 1/16W R106 RK73GB1J123J CHIP R...
  • Page 35 TK-8108 PARTS LIST / 部品表 TX-RX UNIT (X57-6303-XX) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts R256 RK73GB1J104J CHIP R 100K J 1/16W R335 RK73GB1J472J CHIP R 4.7K J 1/16W R257 R92-1261-05...
  • Page 36 TK-8108 PARTS LIST / 部品表 TX-RX UNIT (X57-6303-XX) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts 2SJ243 Q10,11 2SK508NV(K52) KRX102U TRANSISTOR ∗ KRC404RTK DIGITAL TRANSISTOR 2SC4617(S) TRANSISTOR 2SC5108(Y) TRANSISTOR ∗ KRC414RTK DIGITAL TRANSISTOR...
  • Page 37 TK-8108 EXPLODED VIEW / 部件分解图 N67-3008-46 PAN HEAD SEMS SCREW N87-2606-46 BRAZIER HEAD TAPTITE SCREW N87-2614-46 BRAZIER HEAD TAPTITE SCREW Part number label face down DISPLAY UNIT TX-RX UNIT Parts with the exploded numbers larger than 700 are not supplied.
  • Page 38 TK-8108 PACKING / 包装 5 Instruction Manual (B62-1390-00) 21 Protection bag (H25-2320-04) 20 Polystyrene Foamed Fixture 19 Polystyrene Foamed Fixture (H10-6639-03) (H10-6636-03) 22 Item Carton Case (H52-1700-02) DC cord (E30-3339-05) SCREW SET Bracket (N99-0395-05) (J29-0662-03) FUSE (F51-0017-05) Protection Bag (H25-0103-04)
  • Page 39 TK-8108 ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Specifications 1. Standard Signal Generator Frequency Range 400 to 520MHz (SSG) Modulation Frequency modulation and external modulation Output –127dBm/0.1µV to greater than –7dBm/100mV 2. Power Meter Input Impedance Operation Frequency...
  • Page 40 TK-8108 调整 所需的用于调整的测试设备 测试设备 主要特性 1. 标准信号发生器 频率范围 400 到 520MHz (SSG) 调制 调频和外部调制 输出 –127dBm/0.1µV 到大于 –7dBm/100mV 2. 功率计 输入阻抗 操作频率 400 到 520MHz 或更高 测量范围 100W左右 3. 偏差仪 频率范围 400 到 520MHz 4. 数字电压表 测量范围 直流1到 20V (DVM) 输入阻抗...
  • Page 41 TK-8108 ADJUSTMENT / 调整 ■ Note / 注释 Adjustment Location / 调整定位 ■ Switch / 开关 • EEPROM The tuning data (Deviation, Squelch, etc.) for the 音量高/低 EEPROM, is stored in memory. When parts are changed, 电源 显示 PF 键...
  • Page 42 Wide/Narrow CH: RX high: Wide 2) SSG output: 2dB above to 12dB SINAD level: Wide/Narrow Mod: 1kHz Dev: ±3.0kHz: Wide Dev: ±1.5kHz: Narrow Test frequency(MHz) TK-8108 C TK-8108 C3 Channel Channel 1: Center 470.100 470.050 1: Center 415.100 415.050 2: Low 450.100...
  • Page 43 路1 CH: 接收中心频点: 宽/窄 CH: 接收高频点: 宽 2) 标准信号发生器输出: 2dBM以上12dB SIND电平: 宽/窄 Mod: 1kHz Dev: ±3.0kHz: 宽 Dev: ±1.5kHz: 窄 测试频率(MHz) TK-8108 C TK-8108 C3 信道 发射 接收 信道 发射 接收 1: 中心 470.100 470.050 1: 中心 415.100 415.050 2: 低...
  • Page 44 CH: TX high: Wide 2) Transmit ±3.0kHz: Wide 9. DTMF 1) CH: TX center: Wide/Narrow ±0.2kHz 2) Transmit ±1.5kHz: Narrow deviation Test frequency(MHz) TK-8108 C TK-8108 C3 Channel Channel 1: Center 470.100 470.050 1: Center 415.100 415.050 2: Low 450.100 450.050...
  • Page 45 ±0.05kHz CH: 发射中心频点:宽/窄 ±0.35kHz: 窄 CH: 发射高频点: 宽 2) 发射 ±3.0kHz: 宽 9. DTMF DEV 1) CH: 发射中心频点:宽/窄 ±0.2kHz 2) 发射 ±1.5kHz: 窄 测试频率(MHz) TK-8108 C TK-8108 C3 信道 发射 接收 信道 发射 接收 1: 中心 470.100 470.050 1: 中心...
  • Page 46 TK-8108 ADJUSTMENT / 调整 BPF-Wave • TK-8108 C Fig. 1 / 图1 • TK-8108 C3 TK-260 :K, K2 Fig. 2 / 图2...
  • Page 47 TK-8108 PC BOARD VIEW / PC 板视图 DISPLAY UNIT (X54-3340-20) Component side view + Foil side view DISPLAY UNIT (X57-3340-20) Component side view MONI POWER HOOK DOWN PROG POWER LEDMON LEDPF LEDC1 LEDC2 LEDR LEDG MICBL LEDC3 LEDC4 KMI1 KMI2...
  • Page 48 TK-8108 PC BOARD VIEW / PC 板视图 TX-RX UNIT (X57-6303-XX) Component side view -01:C, -02:C3 TX-RX UNIT (X57-6303-XX) Component side view R262 C323 IC101 C525 C514 C295 R239 C299 R238 C296 R265 C291 C328 Q101 C292 R247 R244 R250 R236...
  • Page 49 TK-8108 PC BOARD VIEW / PC 板视图 TX-RX UNIT (X57-6303-XX) Foil side view -01:C, -02:C3 TX-RX UNIT (X57-6303-XX) Foil side view C327 R268 C523 R233 C246 C233 C251 R221 C271 C239 C255 C216 R237 C199 C197 C369 C228 R306 R296...
  • Page 50 TK-8108 PC BOARD VIEW / PC 板视图 TX-RX UNIT (X57-6303-XX) Component side view + Foil side view -01:C, -02:C3 TX-RX UNIT (X57-6303-XX) Component side + Foil side view C327 R268 R262 C323 IC101 C525 C514 C295 R239 C299 R238 C296...

  • Page 51: 原理图

    TK-8108 SCHEMATIC DIAGRAM / 原理图 Note : Component marked with a dot ( ● ) are parts of pattern1.

  • Page 52: 方块图

    TK-8108 TK-8108 BLOCK DIAGRAM / 方块图...

  • Page 53: 电平图

    TK-8108 TK-8108 LEVEL DIAGRAM / 电平图 RX section / 接收部 TX section / 发射部...

  • Page 54: 端子功能

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  • Page 55 KENWOOD ELECTRONICS TECHNOLOGIES(S) PTE LTD. KENWOOD ELECTRONICS U.K. LIMITED Sales Marketing Division KENWOOD House, Dwight Road, Watford, Herts., WD1 8EB United Kingdom 1 Ang Mo Kio Street 63, Singapore 569110 KENWOOD ELECTRONICS EUROPE B.V. Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands...

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