Kenwood TK 2118 Service Manual

Page 1

SERVICE MANUAL / éfifié$flfl

© 2001-8 PRINTED IN JAPAN
851-8575-00 (S) 668

Helical Antenna
(T90-0757-05)

Knob
(VO LI
(K296114203)

Knob(ENC)
(K29-5443-03I

- CONTENTS -

(52093203 GENERAL .................................................................. 2
REALIGNMENT ......................................................... 3
CIRCUIT DESCRIPTION . 11
SEMICONDUCTOR DATA .. . 17
DESCRIPTION OF COMPONENTS. . 19
TERMINAL FUNCTION ........................................... 21
PARTS LIST ............. . 22
EXPLODED VIEW . 29

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(PTT, MONIl- F fi= -
(me-9027413)

EQQQQD- PACKING ................................................................. 30
Fail): m a? E"? 'I ADJUSTMENT ......................................................... 31
I 7' " a sill Key IOpIDTMF) PC BOARD VIEWS

CD 5" =6 . | <29 9028 13 DISPLAY UNIT (X41-3583-00) ............................ 37
(D C rm Tx-Rx UNIT (X57-6233-00) ................................ 39
C373 2 fl SCHEMATIC DIAGRAM. .51
= - Emit 333V BLOCK DIAGRAM .. . 55
(A02»3512-13) LEVEL DIAGRAM . 57

30-20, PB-40, PB-41, BT-12 ................................... 58

SPECIFICATIONS ................................ BACK COVER

TK-21 18

Page 2

TK-21 18

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BC-ZO, PB-40, PB-41, BT-12
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GENERAL / 1335323

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 pr0per identification.

PERSONAL SAFETY
The following precautions are recommended for personal

safety :

- 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.

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