Kenwood TK-2102G- Manuals

Page 2 - SCOPE OF THIS MANUAL; GENERAL

TK-2102G 2 INTRODUCTION SCOPE OF THIS MANUAL This manual is intended for use by experienced techni- cians familiar with similar types of commercial grade com-munications equipment. It contains all required service information for the equipment and is current as of the pub-lication date. Changes whic...

Page 3 - REALIGNMENT; How to Enter Each Mode; Getting Acquainted

TK-2102G 3 REALIGNMENT 1. Modes User mode PC mode PC test mode PC tuning mode Data programming mode Mode Function User mode For normal use. PC mode Used for communication between the trans-ceiver and PC. Data programming mode Used to read and write frequency data and other features to and from the t...

Page 5 - DISASSEMBLY FOR REPAIR; Removing the case assembly from the chassis; Removing the lever

TK-2102G 5 DISASSEMBLY FOR REPAIR ■ Removing the case assembly from the chassis 1. Remove the two knobs q , cushion w and three round nuts e . 2. Remove the two screws r . 3. Expand the right and left sides of the bottom of the case assembly, then Iift and remove the chassis from the case assembly t...

Page 6 - CIRCUIT DESCRIPTION; Frequency Confi guration; Fig. 1 Frequency confi guration

TK-2102G 6 CIRCUIT DESCRIPTION 1. Frequency Confi guration The receiver utilizes double conversion. The first IF is 38.85MHz and the second IF is 450kHz. The fi rst local oscil-lator signal is supplied from the PLL circuit. The PLL circuit in the transmitter generates the neces- sary frequencies. Fi...

Page 7 - PLL Frequency Synthesizer; Fig. 3 AF amplifi er and squelch

TK-2102G 7 CIRCUIT DESCRIPTION XF200:L71-0522-05 Item Rating Nominal center frequency 38.850MHz Pass band width ±5.0kHz or more at 3dB 40dB stop band width ±20.0kHz or less Ripple 1.0dB or less Insertion loss 4.0dB or less Guaranteed attenuation 80dB or more at fo -910kHz Terminal impedance 610 Ω /3...

Page 8 - Fig. 6 Transmit audio and QT/DQT encoder; Fig. 5 Unlock detector circuit

TK-2102G 8 CIRCUIT DESCRIPTION Fig. 4 PLL circuit Fig. 6 Transmit audio and QT/DQT encoder 3) Unlock Detector If a pulse signal appears at the LD pin of IC1, an unlock condition occurs, and the DC voltage obtained from D7, R1, and C1 causes the voltage applied to the UL pin of the mi-croprocessor to...

Page 9 - ) VCO and RF Amplifi er; ) ANT Switch and LPF; ) Thermal Protection Circuit

TK-2102G 9 CIRCUIT DESCRIPTION 3) VCO and RF Amplifi er The transmit signal obtained from the VCO buffer am- plifi er Q100, is amplifi ed by Q101. This amplifi ed signal is passed to the power amplifi er, Q102 and Q105, which con-sists of a 2-stage FET amplifi er and is capable of producing up to 5W...

Page 10 - SEMICONDUCTOR DATA

TK-2102G 10 SEMICONDUCTOR DATA Microprocessor: 38268MCA060GU (TX-RX unit IC403) Pin No. Port Name I/O Function 1,2 VC1,VC2 O Variable capacity tune control 3 NC I NC 4 TIBI I QT/DQT external circuit center point input 5 TI I QT/DQT signal input 6 BUSY I Busy input 7 BATT l Battery voltage detection ...

Page 11 - COMPONENTS DESCRIPTION

TK-2102G 11 COMPONENTS DESCRIPTION Ref. No. Part Name Description IC1 IC Phase locked loop system IC100 IC Automatic power control IC200 IC IF system IC300 IC Audio amp active fi lter IC301 IC Active fi lter IC302 IC Audio power AMP IC400 IC Reset switch IC401 IC EEPROM IC402 IC Voltage detect IC403...

Page 12 - PARTS LIST

TK-2102G 12 Chip capacitor Code L W T Empty 5.6 ± 0.5 5.0 ± 0.5 Less than 2.0 A 4.5 ± 0.5 3.2 ± 0.4 Less than 2.0 B 4.5 ± 0.5 2.0 ± 0.3 Less than 2.0 C 4.5 ± 0.5 1.25 ± 0.2 Less than 1.25 D 3.2 ± 0.4 2.5 ± 0.3 Less than 1.5 E 3.2 ± 0.2 1.6 ± 0.2 Less than 1.25 F 2.0 ± 0.3 1.25 ± 0.2 Less than 1.25 G...

Page 19 - EXPLODED VIEW; Parts with the exploded numbers larger than 700 are not supplied.

TK-2102G 19 EXPLODED VIEW Parts with the exploded numbers larger than 700 are not supplied. 3 2 1 B A 1 42 43 37 44 41 13 9 33 45 C B B 704 703 Fx2 TX-RXunit Fx3 Fx3 A F A Dx2 E 702 701 700 Fx3 9 53 24 23 25 39 15 10 2 16 8 17 51 49 34 7 27 18 37 A : N09-2438-05 B : N14-0581-44 C : N14-0804-24 D M2....

Page 20 - PACKING

TK-2102G 20 PACKING 3 2 1 D C 56 AC adapter (AC 120V) (W08-0479-25):K58 AC adapter (AC 230V) (W08-0558-35):M 59 Charger (W08-0598-15) 5 Instruction manual (B62-2103-00) 4 Cap (SP/MIC) (B09-0351-03) 47 Screw set (N99-0396-15) 713 54 Helical antenna (T90-1036-15) 36 Belt clip (J29-0734-05) 715 30 Prot...

Page 21 - ADJUSTMENT; Test Equipment Required for Alignment; Antenna connector adapter

TK-2102G 21 ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Specifi cations 1. Standard Signal Generator (SSG) Frequency Range 150 to 174MHz Modulation Frequency modulation and external modulation Output –127dBm/0.1µV to greater than –47dBm/1mV 2. Power Meter Input Impedance 50...

Page 22 - Controls; Frequency; Preparations for tuning the transceiver; Adjustment Frequency; Adjustment Points

TK-2102G 22 ADJUSTMENT Controls Speaker/ microphone jacks Antenna Monitor key PTT switch LED indicator Speaker Microphone Power switch/ Volume control Channel selector Frequency The set has been adjusted for the frequencies shown in the following table. When required, re-adjust them follow-ing the a...

Page 23 - Transmitter Section

TK-2102G 23 ADJUSTMENT Transmitter Section Item Condition Measurement Adjustment Specifi cations / Remarks Test- equipment Unit Terminal Unit Parts Method 1. Frequency adjust 1) TEST CH: Center PTT: ON Frequency counter TX-RX ANT Program-ming software:KPG-55D(Windows version: ver.4.00 or later) Cent...

Page 25 - Receiver Section

TK-2102G 25 ADJUSTMENT Receiver Section Item Condition Measurement Adjustment Specifi cations / Remarks Test- equipment Unit Terminal Unit Parts Method 1. BPF wave adjust 1) TEST CH: Center Spectrum analyzer setting Center frequency: 160MHz Span: 100MHz RBW: 100kHz VBW: 10kHz ATT: 0dB REF: -20dBm TG...

Page 26 - PC BOARD

26 J I H G F E D C B A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 R401 R404 R405 R408 R409 R416 R418 C400 C408 + C409 C411 C412 C413 C415 Q305 Q306 + Q504 CV J79-0166-09 IC400 IC401 IC402 1 3 3 4 1 5 + 4 5 IC403 1 25 26 50 51 75 76 100 IC404 AF O G I R500 R501 R503 R504 R507 R509 R510 R511 R514 R327 R520 R332...

Page 30 - SCHEMATIC DIAGRAM

30 TK-2102G SCHEMATIC DIAGRAM X57-602 1/4 7 6 5 4 3 2 1 A B C D E -t L4 470n R421 47k R424 3.3k L7 R12 270k C418 0.01u R423 47k C422 0.01u C429 1u R407 1k R21 100k R417 10 TH500 3k C17 330p CP1 1k*4 R406 2.2k Q404 UMG3N R20 1k C7 470p X400 7.3728MHz L77-1761-15 C417 1u C1 0.1u C23 10u6.3 C409 3p C42...

Page 33 - Note : The components marked with a dot (

33 SCHEMATIC DIAGRAM TK-2102G Note : The components marked with a dot ( • ) are parts of layer 1. X57-602 4/4 7 6 5 4 3 2 1 T S R Q P Q108 DTC114EE IC100 NJM2904V-ZB 1 2 3 4 GND 5 6 7 8 V+ MIC500 J500 C335 0.047u C132 470p C531 220p R339 8.2k R539 0 F500 C327 0.1u C337 100u6.3 R538 100 R145 180k L50...

Page 34 - BLOCK DIAGRAM

TK-2102G 34 D5 1SV214 -F D1,D2 1SV283F x2 X1 L77-1877 -15 IC1 MB15A02PFV2E1 Q4 2SK1875 -F(V) Q6 2SC5108 (Y)F Q3 2SK1875 -F(V) Q10 2SC5 (Y) Q2 2SC5108 (Y)F Q403 DTC 144EE 2M Q5,Q7 2SJ243 -A UMC4 D3,D4 1SV283F x2 IC403 38268MCA060GU IC401 AT24CO8A 10SU18 IC402 R3111N 451C-F Q405 UPA 672T-A IC400 BD484...

Page 36 - LEVEL DIAGRAM

TK-2102G 36 LEVEL DIAGRAM Receiver Section T ransmitter Section SG output level for obtaining 12dB / SINAD when injected to each point through a 470pF coupling capacitor . Measure the 1st Local level on a RF VTVM. Modulate the AF level with a frequency of 1kHz and deviation of 1.5kHz (Narrow), 3kHz ...

Page 37 - OPTIONAL ACCESSORIES

TK-2102G 37 OPTIONAL ACCESSORIES KNB-14 (Ni-Cd BATTERY) ■ Schematic Diagram ■ External View ■ External View ■ External View Discharge pin side Breaker (80 ± 5 ° C) Charge pin side Thermistor Diode Breaker (70 ± 5 ° C) KNB-15A (Ni-Cd BATTERY) ■ Schematic Diagram KNB-20N (Ni-MH BATTERY) ■ Schematic Di...

Page 38 - SPECIFICATIONS

TK-2102G 2967-3, Ishikawa-machi, Hachioji-shi, Tokyo, 192-8525 Japan P.O. BOX 22745, 2201 East Dominguez Street, Long Beach, 6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8 Rembrücker Str. 15, 63150 Heusenstamm, Germany Leuvensesteenweg 248 J, 1800 Vilvoorde, Belgium KENWOOD House, Dwight Ro...