Kenwood TK-378G Service Manual
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Kenwood TK-378G Service Manual

Uhf fm transceiver
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UHF FM TRANSCEIVER / UHF FM 手持机
TK-378G
SERVICE MANUAL /
M VERSIONS
SUPPLEMENT/
Helical Antenna
(T90-0743-05): M
(T90-0744-05): M4
Button knob (PTT)
(K29-5334-23)
Button knob
(MONI/LAMP)
(K29-5333-13)
CONTENTS
PARTS LIST .......................................................... 2
EXPLODED VIEW ................................................. 9
PACKING ............................................................ 10
ADJUSTMENT ................................................... 11
PC BOARD VIEWS
TX-RX UNIT (X57-617X-XX) ........................ 23
SCHEMATIC DIAGRAM ..................................... 29
BLOCK DIAGRAM .............................................. 33
LEVEL DIAGRAM ............................................... 35
KNB-14/KNB-15A (Ni-Cd BATTERY) ................ 36
SPECIFICATIONS ............................ BACK COVER
维修手册
追补版
Knob
(CHANNEL SELECTOR)
(K29-5434-03)
Knob (VOLUME)
(K29-5332-03)
Cabinet assy
(A02-3508-33)
©
2002-10 PRINTED IN JAPAN
B51-8640-00 (S) 607
This service manual is aimed to revise and update the
information on the PC Board that is used in the TK-378G
transceiver having the serial number 4700201 and the
later serial numbers. Refer to the original TK-378G
(M,M4) service manual (B51-8517-00) for any
information which are not contained in this manual.
此维修手册的目的是修改和更新印刷电路板的资料，它
用于序号 4700201 以后的 TK-378G 对讲机。关于未包
含于此手册的资料请参照 TK-378G (M,M4) 初版维修手
册 (B51-8517-00)。
零件表 ................................................................... 2
部件分解图 ............................................................ 9
包装 ..................................................................... 10
调整 ..................................................................... 11
PC 板视图
TX-RX 单元 (X57-617X-XX) ........................... 23
原理图 ................................................................. 29
方块图 ................................................................. 33
电平图 ................................................................. 35
KNB-14/KNB-15A (镍－铬电池) .......................... 36
KMC-17/KMC-21(扬声器话筒) ............................ 37
规格 ..................................................................... 39
目录
目录
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Summary of Contents for Kenwood TK-378G

  • Page 1: Table Of Contents

    This service manual is aimed to revise and update the 追补版 SUPPLEMENT/ information on the PC Board that is used in the TK-378G transceiver having the serial number 4700201 and the later serial numbers. Refer to the original TK-378G (M,M4) service manual (B51-8517-00) for any information which are not contained in this manual.

  • Page 2: Parts List

    TK-378G 零件表 PARTS LIST / CAPACITORS CC 45 TH 1H Capacitor value Color* CC45 010 = 1pF 0 = 22pF 1 = Type ... ceramic, electrolytic, etc. 100 = 10pF 4 = Voltage rating Multiplier 2 = Shape ... round, square, ect.
  • Page 3 E: Europe Les articles non mentionnes dans le Parts No. ne sont pas fournis. Y: AAFES (Europe) X: Australia M: Other Areas Teile ohne Parts No. werden nicht geliefert. TK-378G (Y50-5390-XX) TX-RX UNIT (X57-6170-XX) Ref. No. Address Parts No. Description Destination Ref.
  • Page 4 TK-378G 零件表 PARTS LIST / TX-RX UNIT (X57-6170-XX) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts CC73GCH1H080D CHIP C 8.0PF C122 CK73FB1A105K CHIP C 1.0UF C92-0507-05 CHIP-TAN 4.7UF 6.3WV C123 CK73GB1H391K CHIP C...
  • Page 5 TK-378G 零件表 PARTS LIST / TX-RX UNIT (X57-6170-XX) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts C212 CK73GB1H122K CHIP C 1200PF K C311 CC73GCH1H030B CHIP C 3.0PF C213 CK73GB1H103K CHIP C 0.010UF K...
  • Page 6 TK-378G 零件表 PARTS LIST / TX-RX UNIT (X57-6170-XX) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts L40-1885-92 SMALL FIXED INDUCTOR(180NH) RK73GB1J390J CHIP R J 1/16W L40-1005-85 SMALL FIXED INDUCTOR(10UH) R28,29 RK73GB1J271J CHIP R...
  • Page 7 TK-378G 零件表 PARTS LIST / TX-RX UNIT (X57-6170-XX) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts RK73GB1J561J CHIP R J 1/16W R164 RK73GB1J184J CHIP R 180K J 1/16W RK73GB1J181J CHIP R J 1/16W...
  • Page 8 TK-378G 零件表 PARTS LIST / TX-RX UNIT (X57-6170-XX) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts R249 R92-1252-05 CHIP R 0 OHM J 1/16W D305-307 HVC350B VARIABLE CAPACITANCE DIODE R250 RK73GB1J472J CHIP R 4.7K...

  • Page 9: Exploded View

    TK-378G 部件分解图 EXPLODED VIEW / 45 33 J32-0925-04 TX-RX unit (A/2) A M2.6x4 :N09-2319-05 B M2x3.5 :N09-2331-05 TX-RX unit (B/2) C NUT :N14-0582-14 D NUT :N14-0591-04 E M2.6x6 :N30-2606-46 G M2x5 :N67-2005-46 H φ 2x4.5 :N78-2045-46 I φ 2x3 :N79-2030-46 J φ...

  • Page 10: Packing

    TK-378G 包装 PACKING / 29.PACKING FIXTURE (H12-1487-02) 30.PROTECTION BAG (H25-0085-04) 40.BELT HOOK 31.PROTECTION BAG (J29-0658-05) (H25-2012-04) 42.HAND STRAP 51. HELICAL ANTENNA (J69-0339-05) (T90-0743-05) : M 4. INSTRUCTION MANUAL (T90-0744-05) : M4 3. CAP (SP/MIC) (B62-1288-10) (B09-0351-03) 29.PACKING FIXTURE (H12-1487-02) 36.HARDWARE FIXTURE...

  • Page 11: Adjustment

    TK-378G 调整 ADJUSTMENT / Test Equipment Required for Alignment Test Equipment Major Specifications Standard Signal Generator Frequency Range 400 to 470MHz (SSG) Modulation Frequency modulation and external modulation. Output -127dBm/0.1µV to greater than -47dBm/1mV Power Meter Input Impedance 50Ω. Operation Frequency 400 to 470MHz or more.

  • Page 12: Tx-Rx Unit (X57-617X-Xx)

    TK-378G 调整 ADJUSTMENT / ■ The following parts are required for adjustment ■ 下面是调整时所需的部件 1. 天线接口转换头 1. Antenna connector adapter 此手持机的天线接口使用 SMA 终端。 The antenna connector of this radio uses an SMA terminal. 使用天线接口转换头[SMA（f）-BNC（f）或 SMA（f）-N（f） ] Use an antenna connector adapter [SMA(f) – BNC(f) or 进行调整。...
  • Page 13 TK-378G 调整 ADJUSTMENT / ■ Frequency and signalling ■ 频率和信令 The set has been adjusted for the frequencies shown in 为下表所列的频率调整设定。 需要时， 按照调整步骤重新调 the following table. When required, re-adjust them following 整以获得用户在实际操作中想要的频率。 the adjustment procedure to obtain the frequencies you want in actual operation.
  • Page 14 TK-378G ADJUSTMENT Common Section Measurement Adjustment Specifications/ Item Condition Remark Test equipment Terminal Parts Method 1. Setting 1) BATT terminal voltage:7.5V 2) SSG Standard modulation [Wide] MOD:1kHz, DEV:3kHz [Narrow] MOD:1kHz, DEV:1.5kHz 2. VCO lock 1) CH:RX High Power meter 4.0V ± 0.1V...
  • Page 15 TK-378G 调整 公用部分 测量 调整 项目 条件 规格 / 备注 测试设备 终端 部件 方法 1. 设定 1) 电池终端 电压∶7.5V 2)SSG 标准 调制 [宽带]MOD:1kHz DEV:3kHz [窄带]MOD:1kHz DEV:1.5kHz 2. 压控振 1) 信道:RX High 功率仪 天线 调整 4.0V ± 0.1V 荡器电压 2) 信道:RX Low 数字电压表...
  • Page 16 TK-378G ADJUSTMENT Measurement Adjustment Specifications/ Item Condition Remark Test equipment Terminal Parts Method 7. DQT TCXO TEST CH: TX Low Deviation meter PC key Balance TX Center Oscilloscope SP/MIC connector (PC MODE) TX High [180] (Wide/Narrow) AF VTVM PTT:ON 8. DQT VCO...
  • Page 17 TK-378G 调整 测量 调整 项目 条件 规格 / 备注 测试设备 终端 部件 方法 7. QT TCXO 测试信道: TX Low 频偏仪 天线 计算机键 平衡 TX Center 示波器 扬声器 / 话筒接口 (计算机模式) TX High 音频发生器 [180] (宽 / 窄) 音频电压表 PTT:开启 8. DQT 压控振荡器 测试信道: TX Low 使调整波形为方...
  • Page 18 TK-378G ADJUSTMENT Receiver Section Measurement Adjustment Specifications/ Item Condition Remark Test equipment Terminal Parts Method M type 1. BPF TEST CH : RX Center Tracking generator TC301, TC302, Adjust wave form to figure 1. Adjustment Tra-G setting -40dBm Spectrum analyzer TC303 Fig.
  • Page 19 TK-378G 调整 接收部分 测量 调整 项目 条件 规格 / 备注 测试设备 终端 部件 方法 M type 1. BPF 测试信道∶RX Center 轨迹发生器 天线 TC301，TC302， 按图 1 调整波形。 调整 Tra-G 设定 -40dBm 频谱分析仪 TC303 图 1 BPF 波形 2. 灵敏度 1） 测试信道∶RX Center 标准信号发生器...
  • Page 20 TK-378G ADJUSTMENT Measurement Adjustment Specifications/ Item Condition Remark Test equipment Terminal Parts Method M4 type 1. Sensitivity : Low PC key : [55] Adjustment f : Center : [100] (PC MODE) f : High : [160] 2. BPF TEST CH : Low...
  • Page 21 TK-378G TK-378G 调整 调整 ADJUSTMENT / Adjustment points 测量 调整 项目 条件 规格 / 备注 TX-RX unit (X57-617X-XX) 测试设备 终端 部件 方法 调整点 M4 type TX-RX 单元（X57-617X-XX） 1. BPF : Low 数字电压表 计算机键 : [55] 调整 : Center : [100]...
  • Page 22 TK-378G PC 板视图 PC BOARD / Serial No.4700201 - TX-RX UNIT TX-RX UNIT (X57-617X-XX) Component Side View (J72-0728-12) (X57-617X-XX) 0-20 : M, 0-21 : M4 R218 C194 R118 R164 C184 R259 C209 R255 R123 R122 C261 C207 R170 C216 R147...
  • Page 23 TK-378G PC 板视图 PC BOARD / TX-RX UNIT Serial No.4700201 - (X57-617X-XX) TX-RX UNIT (X57-617X-XX) Foil Side View (J72-0728-12) 0-20 : M, 0-21 : M4 R108 C241 C146 R266 MIC1 R258 C126 C131 C108 C139 ∗ C107 ∗ C115 C332...
  • Page 24 TK-378G 2SC4649 W29C020C90 PC 板视图 PC BOARD / TX-RX UNIT Serial No.4700201 - (X57-617X-XX) TX-RX UNIT (X57-617X-XX) Component Side View + Foil Side View (J72-0728-12) 0-20 : M, 0-21 : M4 R108 R218 C241 C194 R118 C146 R266 R164 C184...

  • Page 25: Schematic Diagram

    TK-378G 原理图 SCHEMATIC DIAGRAM / • Note) Component marked with a dot ( ) are Parts of layer 1.

  • Page 26: Block Diagram

    TK-378G TK-378G 方块图 BLOCK DIAGRAM /...

  • Page 27: Level Diagram

    TK-378G TK-378G 电平图 KNB-14/KNB-15A (Ni-Cd BATTERY) LEVEL DIAGRAM / KNB-14 CIRCUIT DIAGRAM SPECIFICATIONS Voltage : 7.2V (1.2V x 6) Charging current : 600mAh Dimensions : 60.8W x 110.8H x 17.3D (mm) Discharge pin side (projections included) Charger and charging time:...

  • Page 28: Kmc-17/Kmc-21(Speaker Microphone)

    TK-378G KMC-17/KMC-21(SPEAKER MICROPHONE) KMC-17 (Speaker microphone) KMC-17 Parts List Ref. No. Parts No. Description parts marks A02-0907-08 Case (Front) A02-0908-08 Case (Rear) B09-0316-08 D10-0606-08 Lever (PTT) E11-0421-05 Phone jack E30-3138-18 Curl cord F07-0889-08 Silicon rubber (PTT) G53-0569-08 Packing (MIC case)
  • Page 29 TK-378G MEMO...
  • Page 30 TK-378G 规格 概述 频率范围 ..................450〜470MHz (M), 400〜420MHz (M4) 信道数量 ..................最多 16 个 组数量 .................... 最多 16 个 信道间隔 ..................25kHz（宽） 12.5kHz（窄） PLL 步进值 ..................5kHz，6.25kHz 工作电压 ..................7.5V 直流± 20％ 电池寿命 ..................4W 时长于 4 个小时（使用 KNB-14 电池 5-5-90 工作周期）...

  • Page 31: Specifications

    13, Boulevard Ney, 75018 Paris, France Sales Marketing Division KENWOOD ELECTRONICS U.K. LIMITED 1 Ang Mo Kio Street 63, Singapore 569110 KENWOOD House, Dwight Road, Watford, Herts., WD18 9EB, United Kingdom KENWOOD ELECTRONICS EUROPE B.V. Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands...

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