Kenwood TK-7102H REALIGNMENT / INSTALLATION

TK-7102H

11

REALIGNMENT / INSTALLATION

6-3. Modifying the Transceiver

Modify the transceiver as follows to turn the power on and

off with the ignition key.

1. Remove the jumper resistor (0Ω) R71 of the TX-RX unit.

■ Setting With the KPG-70D

Select “External Devices” from the “Edit” menu and en-

able the “Ignition Sense”.

R71CN2TX-RX UNITComponent side

Fig. 8

INSTALLATION

1. Optional Board

1-1. Voice Scrambler Board Connection

■Modification

1. Remove the cabinet and shielding cover from the trans-

ceiver.

2. Delete R202 and R267 on the TX-RX unit.

A

9

8

7

D

C

B

A

A12

1

3

7

8

9

10

11

12

1

12

BA11

CA10

DA9

E

1

2

3

4

5B5

6B7

7A8

8A7

9A3

10B11

11B9

12B4

E18

Voice scrambler

board

12 pins lead wire

with connector (A)

E37-1081-05

CN2

12

6

5

11

10

1

4

5

7

9

11

1

11

11 pins lead wire

with connector (B)

E37-1080-05

CN3

R267CN3R202TX-RX UNITComponent side

■Connection

The functions of pins of CN2 and CN3 on the TX-RX unit

are shown in the TERMINAL FUNCTION section (page 34).

Fig. 1

Fig. 2

Contents

Main TK-7102H SERVICE MANUAL CONTENTS REVISED TK-7102H GENERAL INTRODUCTION SCOPE OF THIS MANUAL ORDERING REPLACEMENT PARTS GENERAL / SYSTEM SET-UP SYSTEM SET-UP 1-5. Rear panel 1. Controls and Functions 1-4. Display o 1-2. Microphone 1-1. Front Panel 2. Operation Features 3. Transceiver Controls and Indicators 4. Scan Operating SCAN start condition Scan stop condition Revert channel Scan end TK-7102H SP Unmute Auto Reset Stun 7. Audible User Feedback Tones REALIGNMENT 1. Modes 2. How to Enter Each Mode 3. PC Mode 3-1. Preface REALIGNMENT 5. Accessory Connection Cable (KCT-39) 5-1. Installing the KCT-39 in the Transceiver Fig. 3 TK-7102H ) into the chassis ( Fig. 7 Accessory Port Function Fig. 6 REALIGNMENT / INSTALLATION 6-3. Modifying the Transceiver Fig. 2 R267 Fig. 8 INSTALLATION Fig. 4 Fig. 3 Setting With the KPG-70D Select External Devices from the Edit menu and set the Scrambler. DISASSEMBLY FOR REPAIR Frequency Configuration Fig. 1 Frequency configuration Fig. 2 Receiver system Receiver System Front-end RF Amplifier CIRCUIT DESCRIPTION Wide/Narrow Changeover Circuit Fig. 6 PLL circuit Fig. 4 AF signal system AF Signal System Transmitter System Outline Power Amplifier Circuit APC Circuit Control Circuit Memory Circuit Fig. 14 Encodet Fig. 13 Key matrix circuit Fig. 12 Display circuit CIRCUIT DESCRIPTION / SEMICONDUCTOR DATA SEMICONDUCTOR DATA Drive Amplifier : PD55003TR (TX-RX Unit Q503) Absolute Maximum Ratings (TCASE = 25C) SEMICONDUCTOR DATA Microprocessor : 30622MAA-B83GP (TX-RX Unit IC101) Terminal Function COMPONENTS DESCRIPTION Display Unit (X54-3460-20) TX-RX Unit (X57-6700-XX) TK-7102H TX-RX UNIT (X57-6700-XX) -22 : M -23 : M2 -24 : K -25 : K2 DISPLAY UNIT (X54-3460-20) Page Page Page Page Page EXPLODED VIEW PACKING Parts with the exploded numbers larger than 700 are not supplied. Test Equipment Required for Alignment Tuning cable (E30-3383-05) MIC connector (Front view) Test cable for microphone input (E30-3360-08) Adjustment Location Switch Part name label face down Fuse Locator PCB Section * Adjustment of TX VCO lock voltage K,M K2,M2 Test Frequency (MHz) Receiver Section Transmitter Section If normal power is not obtained, please follow the step below TERMINAL FUNCTION CN2 Function Port Assignment CN3 CN4 PC BOARD TK-7102H DISPLAY UNIT (X54-3460-20) Component side view (J72-0916-09) DISPLAY UNIT (X54-3460-20) Foil side view (J72-0916-09) ABCDEFGHIJ KLM NOPQRS TK-7102H 37 38 S RQP O NMLK J IHGF PC BOARD TK-7102H 39 40 ABCDEFGHIJ KLM NOPQRS Ref. No. TK-7102H 41 42 46 1 * SCHEMATIC DIAGRAM TK-7102H Note : The components marked with a dot () are parts of layer 1. X57-6700-XX TX-RX UNIT X54-3460-20 DISPLAY UNIT M P TK-7102H TK-7102 H 47 48 BLOCK DIAGRAM TX-RX UNIT (X57-670x-xx) DISPLAY UNIT (X54-3460-20) TK-7102H TK-7102H 49 50 LEVEL DIAGRAM Transmitter Section 4 SPECIFICATIONS 51 GENERAL RECEIVER TRANSMITTER KENWOOD CORPORATION