Table Of Contents - Kenwood FM Transceiver TK-481 Service Manual

800MHz/900MHz FM TRANSCEIVER
TK-480/481
SERVICE MANUAL
REVISED II
This service manual applies to products with 30100001 or
subsequent serial numbers.
Knob (PTT)
(K29-5157-03)
Photo is TK-480/481 K2 type.
(Produced in Singapore)
Whip antenna
(T90-0636-25) : TK-480
(T90-0640-25) : TK-481
Knob (ENC)
(K29-5232-03)
Knob (VOL)
(K29-5231-03)
Panel assy
(A62-0981-04)
Badge
(B43-1139-04)
Cabinet assy
(A02-3659-03) : K2
Packing
(G53-0841-02) : K2
© 2001-3 PRINTED IN JAPAN
B51-8408-20 ( N ) 1015
CONTENTS
GENERAL ............................................................ 2
SYSTEM SET-UP ................................................ 2
OPERATING FEATURES .................................... 3
REALIGNMENT ................................................. 11
CIRCUIT DESCRIPTION .................................... 14
SEMICONDUCTOR DATA ................................ 20
DESCRIPTION OF COMPONENTS .................. 23
PARTS LIST ....................................................... 24
EXPLODED VIEW ............................................. 30
PACKING ........................................................... 31
ADJUSTMENT .................................................. 32
TERMINAL FUNCTION .................................... 40
PC BOARD VIEWS
DISPLAY UNIT (X54-3210-XX) .................... 41
TX-RX UNIT (X57-5630-XX) ......................... 47
SCHEMATIC DIAGRAM ................................... 53
BLOCK DIAGRAM............................................. 57
LEVEL DIAGRAM (TK-480) .............................. 59
LEVEL DIAGRAM (TK-481) .............................. 60
KNB-16A/17A (Ni-Cd BATTERY) ..................... 61
KPG-36 (PROGRAMMING INTERFACE CABLE) .... 61
KSC-19 (CHARGER) .......................................... 61
SPECIFICATIONS .............................................. 62
CAUTION
When using an external power connector,
please use with maximum final module pro-
tection of 9V.