Kenwood TK-2107 Service Manual

Vhf fm transceiver

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Service manual (4 pages)

Instruction manual (20 pages)

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Page 1: Table Of Contents
PACKING ..............18 ADJUSTMENT............19 Cabinet assy PC BOARD VIEWS (A02-2448-13) TX-RX UNIT (X57-6020-21) ........ 23 SCHEMATIC DIAGRAM .......... 27 BLOCK DIAGRAM ..........31 LEVEL DIAGRAM ........... 33 KNB-15A (Ni-Cd BATTERY) ........34 SPECIFICATIONS ........ BACK COVER TK-2107 (16 channels)
Page 2: General
TK-2107 GENERAL/REALIGNMENT PERSONAL SAFETY INTRODUCTION The following precautions are recommended for personal SCOPE OF THIS MANUAL safety : This manual is intended for use by experienced technicians • DO NOT transmit until all RF connectors are verified secure f a m i l i a r w i t h s i m i l a r t y p e s o f c o m m e r c i a l g r a d e and any open connectors are properly terminated.
Page 3 The programming software can be used with an IBM PC or that converts the RS-232C Iogic level to the TTL Ievel. The compatible. Figure 1 shows the setup of an IBM PC for KPG-22 connects the side panel jacks of the TK-2107 to the programming. computer's RS-232C serial port.
Page 4: Disassembly For Repair
TK-2107 DISASSEMBLY FOR REPAIR Separating the chassis from the unit Separating the case assembly from the chassis 1. Remove the eleven screws 1. Remove the two knobs and three round nuts 2. Remove the solder from the antenna terminal using a 2.
Page 5: Circuit Description
TK-2107 CIRCUIT DESCRIPTION 1. Frequency configuration The PLL circuit in the transmitter generates the necessary The receiver utilizes double conversion. The first IF is frequencies. Fig. 1 shows the frequencies. 38.85MHz and the second IF is 450kHz. The first local oscillator signal is supplied from the PLL circuit.
Page 6 TK-2107 CIRCUIT DESCRIPTION XF200:L71-0535-05 CF200:L72-0979-05 Item Rating Item Rating Nominal center frequency 38.850MHz Nominal center frequency 450kHz Pass band width 7.5kHz or more at 3dB 6dB band width 7.5kHz or more 40dB stop band width 40.0kHz or less 50dB band width...
Page 7 TK-2107 CIRCUIT DESCRIPTION 2) VCO The operating frequency is generated by Q4 in transmit set high in receive mode causing Q5 and Q7 to turn Q4 off, mode and Q3 in receive mode. The oscillator frequency is and turn Q3 on . The T/R pin is set low in transmit mode. The...
Page 8: Power Supply
TK-2107 CIRCUIT DESCRIPTION 3) VCO and RF amplifier 4) ANT switch and LPF The transmit signal obtained from the VCO buffer amplifier The RF amplifier output signal is passed through a low- Q100, is amplified by Q101. This amplified signal is passed to...
Page 9: Semiconductor Data
TK-2107 SEMICONDUCTOR DATA Microprocessor: M38267M8L241GP (IC403) Pin No. I/O Port Name Function Pin No. I/O Port Name Function Variable capacity tune control Variable capacity tune control Control of power supply (5M) for QT/DQT external circuit center everything except the TIBI...
Page 10: Description Of Components
TK-2107 DESCRIPTION OF COMPONENTS TK-2107 Ref No. Semiconductor Description PHASE LOCKED LOOP SYSTEM IC100 AUTOMA TIC POWER CONTROL IC200 IF SYSTEM IC300 AUDIO AMP ACTIVE FILTER IC301 ACTIVE FILTER IC302 AUDIO POWER AMP IC400 RESET SWITCH IC401 EEPROM IC402 VOLTAGE DETECT...
Page 11: Parts List
TK-2107 PARTS LIST 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. TK-2107 Ref. No. Address Parts No.
Page 12 TK-2107 PARTS LIST TX-RX UNIT (X57-588X-XX) TX-RX UNIT (X57-6020-21) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts C128 CC73GCH1H030C CHIP C 3.0PF C304 C92-0560-05 CHIP-TAN 10UF 6.3WV C129 CC73GCH1H4R5B CHIP C 4.5PF...
Page 13 TK-2107 PARTS LIST TX-RX UNIT (X57-6020-21) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts C514 CK73GB1C473K CHIP C 0.047UF K L115 L34-4549-05 AIR-CORE COIL C515 CK73GB1H103K CHIP C 0.010UF K L117 L34-4548-05...
Page 14 TK-2107 PARTS LIST TX-RX UNIT (X57-6020-21) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts R107 RK73GB1J392J CHIP R 3.9K J 1/16W R303 RK73GB1J332J CHIP R 3.3K J 1/16W R108 RK73GB1J152J CHIP R 1.5K...
Page 15 TK-2107 PARTS LIST TX-RX UNIT (X57-6020-21) TX-RX UNIT (X57-588X-XX) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts R423 RK73GB1J473J CHIP R J 1/16W 1SV214 VARIABLE CAPACITANCE DIODE R424,425 RK73GB1J332J CHIP R 3.3K...
Page 16 TK-2107 PARTS LIST TX-RX UNIT (X57-6020-21) TX-RX UNIT (X57-588X-XX) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts Q501,502 2SC4617(S) TRANSISTOR Q503 2SC4919 TRANSISTOR Q504 DTA143ZE DIGITAL TRANSISTOR TH100 157-503-65001 THERMISTOR TH500 157-302-65801...
Page 17: Exploded View
TK-2107 EXPLODED VIEW A M2.6x4 :N09-2319-05 B NUT :N14-0581-04 C NUT :N14-0582-14 D M2.6x6 :N30-2606-46 E M2.0x3.5 :N79-2035-46 F M2.0x5 :N83-2005-46 Parts with the exploded numbers larger than 700 are not supplied.
Page 18: Packing
TK-2107 PACKING 15.PROTECTION BAG (H25-0085-04) 14.PACKING FIXTURE 21.BELT HOOK (H12-3037-02) (J29-0624-03) 16.PROTECTION BAG ANT. HELICAL ANTENNA (H25-2012-04) (T90-0733-05):M3 17.ITEM CARTON CASE (H52-1522-02) 3. CAP G. SCREW SET (B09-0351-03) (N99-0396-05) 20.SP/MIC HOLDER (J21-4493-04)
Page 19: Adjustment
• Use a non-conductive rod such as a Ceramic rod for • To protect the SSG,do not send out signals while adjusting adjustment (especially of trimmers and coils). the receiving unit. Kenwood order No. A-0910 (0.4X0.9mm) • The indicated SSG output levels are for maximum output. Kenwood order No.
Page 20 TK-2107 ADJUSTMENT Adjustment point L212 TC201: Band-pass filter waveform adjustment L212: AF level adjustment TC201 TC1: Transmit lock voltage adjustment TC2: Receive lock voltage adjustment R225 TP2: Band-pass filter test point Foil Side View ANT: Antenna connector Channel selector Speaker jack...
Page 21 TK-2107 ADJUSTMENT Use the KPG-55D programming software for adjustment of the next item in PC MODE (see page 3). Squelch Level, Transmit frequency, DQT Balance, RF Power, QT Deviation, DQT Deviation, Battery Level Section common to the transmitter and receiver (VCO)
Page 22 TK-2107 ADJUSTMENT M3 BPF-Wave Fig. 1 TK-260 :K, K2...
Page 23: Pc Board Views
TK-2107 PC BOARD VIEW TX-RX UNIT (X57-6020-21) Component Side View TX-RX UNIT (X57-6020-21) Component Side View R541 J72-0686-02 R535 C529 C523 R538 C502 F500 L401 D500 Q503 R416 C522 R530 R401 R405 R507 R417 C521 C408 C524 C520 R528 C418...
Page 24 TK-2107 PC BOARD VIEW TX-RX UNIT (X57-6020-21) Foil Side View TX-RX UNIT (X57-6020-21) Foil Side View J72-0686-02 R300 C322 R340 C321 R326 Q302 C316 C312 R321 C309 R328 R315 R314 R312 J500 C307 R406 R426 R102 C427 R419 R403 R402...
Page 25: Schematic Diagram
TK-2107 SCHEMATIC DIAGRAM Note : Component marked with a dot ( ) are parts of pattern1.
Page 26: Block Diagram
TK-2107 TK-2107 BLOCK DIAGRAM...
Page 27: Level Diagram
TK-2107 LEVEL DIAGRAM...
Page 28: Knb-15A (Ni-Cd Battery)
TK-2107 KNB-15A (Ni-Cd Battery) KNB-15A CIRCUIT DIAGRAM SPECIFICATIONS Voltage : 7.2V (1.2V x 6) Discharge pin side Charging current : 1100mAh Dimensions : 60.8W x 110.8H x 20.3D (mm) (projections included) Breaker Breaker Charger and charging time: (80 5 C)
Page 29 TK-2107 MEMO TK-260 :K, K2...
Page 30: Specifications
Mechelsesteenweg 418 B-1930 Zaventem, Belgium KENWOOD ELECTRONICS FRANCE S.A. 13, Boulevard Ney, 75018 Paris, France KENWOOD ELECTRONICS U.K. LIMITED KENWOOD House, Dwight Road, Watford, Herts., WD1 8EB United Kingdom KENWOOD ELECTRONICS EUROPE B.V. Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands KENWOOD ELECTRONICS ITALIA S.p.A.

Kenwood TK-2107 Service Manual

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Summary of Contents for Kenwood TK-2107

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