TK-7102TK-7102
2
247

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 current as of this publica-
tion date. Changes which may occur after publication are
covered by either Service Bulletins or Manual Revisions,
which are issued as required.
ORDERING␣ REPLACEMENT␣ PARTS
When ordering replacement parts or equipment informa-
tion, the full part identification number should be included.
This applies to all parts : components, kits, and chassis. If
the part number is not known, include the chassis or kit
number of which it is a part and a sufficient description of
the required component for proper identification.
PERSONNEL␣ SAFETY
The following precautions are recommended for person-
nel safety :
• DO␣NOT␣ transmit if someone is within two feet (0.6
meter) of the antenna.
• DO␣ NOT␣ transmit until all RF␣connectors are secure and
any open connectors are properly terminated.
• SHUT␣ OFF this equipment when near electrical blasting
caps or while in an explosive atmosphere.
• All equipment should be properly grounded before
power-up for safe operation.
• This equipment should be serviced by only qualified tech-
nicians.
PRE-INSTALLATION␣ CONSIDERNATIONS
1. UNPACKING
Unpack the radio from its shipping container and check
for accessory items. If any item is missing, please contact
KENWOOD␣ immediately.
2. LICENSING␣ REQUIREMENTS
Federal regulations require a station license for each ra-
dio installation (mobile or base) be obtained by the equip-
ment owner. The licensee is responsible for ensuring trans-
mitter power, frequency, and deviation are within the limits
permitted by the station license.
Transmitter adjustments may be performed only by a li-
censed technician holding an FCC␣ first, second or general
class commercial radiotelephone operator’s license. There
is no license required to install or operate the radio.

CONTENTS

GENERAL................................................................. 2
OPERATING FEATURES......................................... 4
REALIGNMENT........................................................ 7
DISASSEMBLY FOR REPAIR.................................. 9
CIRCUIT DESCRIPTION......................................... 10
SEMICONDUCTOR DATA..................................... 15
DESCRIPTION OF COMPONENTS....................... 16
PARTS LIST............................................................ 18
EXPLODED VIEW ...................................................24
PACKING................................................................. 25
ADJUSTMENT........................................................ 26
PC BOARD VIEWS
DISPLAY UNIT (X54-3340-20)........................... 31
TX-RX UNIT (X57-6290-20) ...............................33
SCHEMATIC DIAGRAM .........................................39
BLOCK DIAGRAM................................................... 43
LEVEL DIAGRAM.................................................... 45
TERMINAL FUNCTION .......................................... 47
SPECIFICATIONS.................................BACK COVER

TERMINAL FUNCTION

CN1 (TX-RX Unit)
Pin No.
Name Function
1 GND Ground
2 PTT PTT/TXD
3 HOOK Hook detection/RXD
4 ME Mic ground
5 MIC Mic signal input
6 POWER Power switch
7 LED MON Signal of MON Key control
8 LED PF Signal of PF Key control
9 LED C1 Signal of channel1 control
10 LED C2 Signal of channel2 control
11 LED R Signal of TX control
12 LED G Signal of Busy control
13 MICBL Mic backlight control
14 LED C3 Signal of channel3 control
15 LED C4 Signal of channel4 control
16 CM Mic data detection
17 KM11 Key matrix input 11
18 KM12 Key matrix input 22
19 KM13 Key matrix input 33
20 KM14 Key matrix input 44
21 KM01 Key matrix input 01
22 KM02 Key matrix input 02
23 PSB Switched B
J1 (TX-RX Unit)
Pin No.
Name Function
1SP
Audio signal output to internal/external speaker.
2 E Ground
J1 (Control Unit)
Pin No.
Name Function
1 MBL MIC backlight control.
2 PSB 13.6V.
3 GND Ground.
4 PTT/TXD PTT.
5 ME MIC ground.
6 MIC MIC signal input.
7 HOOK/RXD Hook detection
8 CM MIC data detection.