Kenwood TK-7102- Manuals

Page 2 - SCOPE␣ OF␣ THIS␣ MANUAL; ORDERING␣ REPLACEMENT␣ PARTS; LICENSING␣ REQUIREMENTS; CONTENTS; PC BOARD VIEWS; TERMINAL FUNCTION

TK-7102 TK-7102 2 2 47 CONTENTS / GENERAL GENERAL 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 in-formation for the equipment and is curren...

Page 3 - SERVICE; GENERAL; NOTE

3 TK-7102 5. INSTALLATION␣ PLANNING – CONTROL␣ STATIONS5-1. Antenna system Control station. The antenna system selection depends on many factors and is beyond the scope of this manual.Your KENWOOD␣ dealer can help you select an antenna sys-tem that will best serve your particular needs. 5-2. Radio l...

Page 4 - Controls and Functions; OPERATING FEATURES

4 TK-7102 1. Controls and Functions 1-1. Front Panel q (Power) switch Press to switch the transceiver ON. Press and hold forapproximately 1 seconds to switch the transceiver OFF. w ▲ key Press to increase the volume level. e ▼ key Press to decrease the volume level. r ● key PF (Programmable Function...

Page 6 - Details of Features; OPERATING␣ FEATURES

6 TK-7102 ■ Temporary delete It is possible to delete channel temporary during scan. When scan stops on unnecessary channel for example byinterference of the other party, activate the delete function(for example press and hold the key for approximately onesecond), then that channel is deleted tempor...

Page 7 - Audible User Feedback Tones; OPERATING␣ FEATURES / REALIGNMENT; REALIGNMENT; How to Enter Each Mode

7 TK-7102 ■ Stun If the stun code matches, a predetermined action will oc- cur. Whether option signalling is activated or not, whenstun matches on any channel, the transceiver will becomeTX inhibited or TX/RX inhibited. While stun is active, if thestun code + "#" code is received, stun will ...

Page 9 - DISASSEMBLY FOR REPAIR

9 TK-7102 1. When you remove the panel, turn the transceiver up side down. Detach the panel by lifting the tabs asshown below. Fig. 1 Fig. 2 DISASSEMBLY FOR REPAIR 2. To remove the cabinet, first turn the transceiver up side down. Detach the cabinet by prying the tabs asshown below. 3. To remove the...

Page 10 - CIRCUIT DESCRIPTION

10 TK-7102 Frequency Configuration The receiver utilizes double conversion. The first IF is 49.95MHz and the second IF is 450kHz. The first local oscil-lator signal is supplied from the PLL circuit. The PLL circuit in the transmitter generates the neces- sary frequencies. Figure 1 shows the frequenc...

Page 11 - PLL Frequency Synthesizer

11 TK-7102 ■ Wide/Narrow Changeover Circuit The Wide port (pin 92) and Narrow port (pin 91) of the CPU is used to switch between ceramic filters. When theWide port is high, the ceramic filter SW diodes (D13, D15)cause CF1 to turn on to receive a Wide signal. When the Narrow port is high, the ceramic...

Page 12 - Transmitter System

12 TK-7102 D10,12 Q11 TX VCO Q15 BUFF AMP D9,11 Q10 RX VCO Q7,12 T/R SW Charge pump LPF Phase comparator 1/M 1/N 5kHz/6.25kHz 5kHz/6.25kHz REF OSC 16.8MHz PLL DATA IC1 : PLL IC Q3 RF AMP Fig. 6 PLL circuit ■ Unlock Circuit During reception, the 8RC signal goes high, the 8TC sig- nal goes low, and Q2...

Page 13 - Control Circuit

13 TK-7102 ■ APC Circuit The automatic transmission power control (APC) circuit detects part of a power module output with a diode (D34,D36) and applies a voltage to IC12. IC12 compares the APCcontrol voltage (PC) generated by the D/A converter (IC3)and DC amplifier (IC4) with the detection output v...

Page 14 - Power Supply Circuit; Decode; Encode; Power supply circuit

14 TK-7102 ■ Encode The QT and DQT signals are output from QT/DQT of the CPU (IC6) and summed with the external pin DI line by thesumming amplifier (IC4) and the resulting signal goes to theD/A converter (IC3). The DTMF signal is output from DTMFof the CPU and goes to the D/A converter (IC3). The si...

Page 15 - SEMICONDUCTOR DATA; Terminal function

15 TK-7102 SEMICONDUCTOR DATA ■ Terminal function Pin No. Name I/O Function 1 NC I 2 DTMOSC O DTMF IC Clock Control 3 PLLE O PLL IC Chip Select 4 EVLLD O E-Volume LD 5 DTMCK O DTMF Dec IC Clock 6 DTMDT I/O DTMF Dec IC Data 7 UL O Unlock Detect 8 BSHIFT O Clock Shift 9 VDD - 10 X2 - X’TAL(7.3728MHz) ...

Page 16 - DESCRIPTION OF COMPONENTS

16 TK-7102 DESCRIPTION OF COMPONENTS Display Unit (X54-3340-20) SYMBOL PARTS NAME DISCRIPTION D1~4 LED KEY BACKLIT D5 LED MONITOR KEY LIGHT D6 LED PROGRAMMABLE KEY LIGHT D7~10 LED CHANNEL KEY LIGHT D11 LED BUSY D12 LED TRANSMIT Q1 TRANSISTOR MONITOR KEY LIGHT SW Q2,3 TRANSISTOR CHANNEL KEY LIGHT SW ...

Page 18 - PARTS LIST

18 TK-7102 PARTS LIST 1 1B ∗ A01-2178-02 CABINET 2 3B ∗ A10-4047-01 CHASSIS 3 3A ∗ A62-0942-03 PANEL ASSY 4 3A ∗ B10-2668-03 FRONT GLASS 5 2C ∗ B62-1389-00 INSTRUCTION MANUAL 6 3B ∗ B72-1871-04 MODEL NAME PLATE 7 3B E04-0167-05 RF COAXIAL PECEPTACLE(M) 8 1C E30-3339-05 DC CORD ACCESSORY 9 2B ∗ E30-3...

Page 24 - EXPLODED VIEW; Parts with the exploded numbers larger than 700 are not supplied.

24 TK-7102 EXPLODED VIEW Parts with the exploded numbers larger than 700 are not supplied. A B 1 2 3 1 16 C C C C C A A A A B B B B B B B 12 9 18 TX-RX UNIT 7 14 2 6 17 3 4 15 11 26 10 DISPLAY UNIT SP B B A N67-3008-46 PAN HEAD SEMS SCREW B N87-2606-46 BRAZIER HEAD TAPTITE SCREW C N87-2614-46 BRAZIE...

Page 25 - PACKING

25 TK-7102 PACKING Parts with the exploded numbers larger than 700 are not supplied. D SCREW SET (N99-0395-05) Protection bag(H25-0103-04) 8 DC cord(E30-3339-05) 19 Inner Packing Case (H02-0617-02) 5 Instruction Manual(B62-1389-00) 20 Polystyrene Foamed Fixture (H10-6636-03) 24 Item Carton Case (H52...

Page 26 - Test Equipment Required for Alignment; ADJUSTMENT

26 TK-7102 Test Equipment Required for Alignment Test Equipment Major Specifications 1. Standard Signal Generator Frequency Range 140 to 175MHz (SSG) Modulation Frequency modulation and external modulation Output –127dBm/0.1 µ V to greater than –7dBm/100mV 2. Power Meter Input Impedance 50 Ω Operati...

Page 28 - PCB Section

28 TK-7102 TK-260 :K, K2 Test frequency(MHz) Channel TX RX 1: Center 160.100 160.050 2: Low 146.100 146.050 3: High 173.900 173.950 4 160.000 160.000 5 160.200 160.200 6 160.400 160.400 Use KPG-70D programming software for adjustment of the next items. ADJUSTMENT Parts TC2TC1 L22 TC3TC5 Method 5.5V5...

Page 29 - Transmitter section

29 TK-7102 TK-260 :K, K2 Method Adjust to center frequency 25W 5W Adjust the waveform as below ± 4.0kHz: Wide ± 2.0kHz: Narrow According to the large +,-Check ± 0.75kHz: Wide ± 0.35kHz: Narrow ± 0.75kHz: Wide ± 0.35kHz: Narrow ± 3.0kHz: Wide ± 1.5kHz: Narrow Parts PC key Specifications/ Remarks with...

Page 31 - PC BOARD VIEW

A B C D E F G H I J K L M N O P Q R S 1 3 4 5 6 7 8 9 10 11 12 13 14 2 TK-7102 PC BOARD VIEW 32 31 DISPLAY UNIT (X54-3340-20) Component side view + Foil side view . o N . f e R s s e r d d A 1 Q J 4 2 Q F 5 3 Q I 6 4 Q H 5 5 Q K 4 6 Q G 5 7 Q K 6 8 Q I 5 9 Q C 5 0 1 Q C 5 1 D L 7 2 D H 7 3 D N 4 4 D...

Page 35 - SCHEMATIC DIAGRAM

Note : Component marked with a dot ( ● ) are parts of pattern1. A B C D E F G I H J K L M O N P Q S R 1 2 3 4 5 6 7 SCHEMATIC DIAGRAM TK-7102

Page 36 - LEVEL DIAGRAM; RX section; BLOCK DIAGRAM

46 LEVEL DIAGRAM RX section TX section BLOCK DIAGRAM TK-7102 TK-7102 TK-7102 TK-7102 43 45 44

Page 39 - VHF FM TRANSCEIVER; SERVICE MANUAL; SPECIFICATIONS; RECEIVER; KENWOOD CORPORATION

TK-7102 TK-7102 © 2001-5 PRINTED IN JAPANB51-8584-00 (S) 283 VHF FM TRANSCEIVER TK-7102 SERVICE MANUAL Panel assy(A62-0942-03) Front glass(B10-2668-03) Cabinet(A01-2178-02) Key top(K29-9065-01) SPECIFICATIONS GENERAL Frequency Range ................................ 146 to 174MHz Number of Channels ....