Kenwood TK 2140 Service Manual

Page 1

VHF FM TRANSCEIVER

TK-214O

SERVICE MANUAL

KENWOOD

© 2001-10 PRINTED IN JAPAN
B51 -8602-00 (S) 1022

'7 Antenna
(KRA-22:option)

Knob (ENC)
(K29-9134-03)

Knob (VOL)
(K29-9133-03)

Knob (PTT)
(K29-9131-03)

Key top
(SW1 ,swz) :
(K29-9132-03)

Does not come with antenna.
Antenna is available as an option.

- CONTENTS -

GENERAL ................................................................................. 2
SYSTEM SET-UP ...............

OPERATING FEATURES...
REALIGNMENT ........................................................................ 4
CIRCUIT DESCRIPTION .......................................................... 6
SEMICONDUCTOR DATA ...............

DESCRIPTION OF COMPONENTS. ..
PARTS LIST ............................................................................ 14

EXPLODED VIEW
PACKING
ADJUSTMENT .. ..
TERMINAL FUNCTION .......................................................... 32
PC BOARD VIEWS

TX-RX UNIT (X57-6400-10) ................................................ 33
SCHEMATIC DIAGRAM ......................................................... 43
BLOCK DIAGRAM
LEVEL DIAGRAM .
KSC-25 .................. ..
KNB-24L,KNB-25A,KNB-26N.KRA-22 .................................... 53
SPECIFICATIONS ............................................... BACK COVER

-- Cabinet assy
(A02-3653-04)

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TK-214O

GENERAL] SYSTEM SET-UP

INTRODUCTION

SCOPE OF THIS MANUAL

This manual is intended for use by experienced technicians
familiar with similar types of commercial grade communications
equipment. It contains all required service information for the
equipment and is current as of the publication date. Changes
which may occur after publication are covered by either Service
Bulletins or Manual Revisions. These are issued as required.

ORDERING REPLACEMENT PARTS

When ordering replacement parts or equipment information,
the full part identification number should be included. This
applies to all parts : components, kits, or 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.

SYSTEM SET-UP

Merchandise received
License and frequency allocated by FCC

PERSONNEL SAFETY

The following precautions are recommended for personnel

safety:

0 DO NOT transmit until all RF connectors are verified secure
and any open connectors are properly terminated.

. SHUT OFF and DO NOT operate this equipment near
electrical blasting caps or in an explosive atmosphere.

- This equipment should be serviced by a qualified technician
only.

SERVICE

This radio is designed for easy servicing. Refer to the
schematic diagrams, printed circuit board views, and alignment
procedures contained within.

Frequency range (MHZ) RF power Type

Choose the type of transceiver

TX/RX 136~174 5.0W

TK-2140 K

Transceiver programming

A personal computer (IBM PC or compatible), programming
interface (KPG-36), and programming software (KPG-74D)

are required for programming.

(The frequency, trunked system features, conventional system
features, TX power Hl/LOW, and signalling data are programmed
for the transceiver.)

I Are you using the speaker microphone? I-uYES

Speaker microphone

KMC-ZS

NO

(Option)

I Delivery )