Kenwood TM-281A Service Manual

SERVICE MANUAL
This product uses Lead Free solder.
This product complies with the
RoHS
directive for the European market.
© 2011-8 PRINTED IN JA PAN
B51-8988-00
(
N
)
217
TM-281A
144MHz FM TRANSCEIVER
Key top
(K29-9497-01)
Modular jack (MIC)
(E58-0535-05)
Panel assy
(A62-1187-13)
Knob (VOL)
(K29-9498-03)
Knob (ENC)
(K29-9499-03)
DISASSEMBLY FOR REPAIR ......................2
CIRCUIT DESCRIPTION ..............................5
COMPONENTS DESCRIPTION ...................9
SEMICONDUCTOR DATA .........................11
PARTS LIST ...............................................12
EXPLODED VIEW ......................................18
PACKING ....................................................19
ADJUSTMENT ..........................................20
TERMINAL FUNCTION .............................29
PC BOARD
TX-RX UNIT (X57-8130-XX) ..................30
SCHEMATIC DIAGRAM ............................36
BLOCK DIAGRAM .....................................40
LEVEL DIAGRAM ......................................42
SPECIFICATIONS ...................BACK COVER
CONTENTS

Kenwood TM-281A Specifications

General

Microphone included	Yes
Product type	Portable CB radio
Product color	Black
Housing material	-
Frequency range	49.95 - 450000 MHz
Channels quantity	100 channels
Input voltage	13.8 V

Weight and Dimensions

Depth	126 mm
Width	160 mm
Height	43 mm