Kenwood TM-642A Service Manual page 2

144/220 MHz FM MUL Tl BANDER
TM-642A
SERVICE MANUAL
Panel ass'y
(A62-0309-03)
KENWOOD
©
1994-6 PRINTED IN JAPAN
851-8275-00
(B)
450
Knob (MHz) Knob (ENC) Panel ass'y Knob ass'y (VOL)
(K29-4806-04) (K29-4805-04) (A62-0219-03) (K29-4840-04)
This service manual describes mainly about the parts
list, the schematic diagram and the PC board of
TM-642A. For the circuit description and the
semiconductor information, refer to the service manual
of TM-742AIE, TM-942A (851-8192-00).
- - - - - - - CONTENTS - - - - - - -
OVERVIEW ................................................................ 2 PC BOARD VIEWS ................................................. 43
PARTS UST ..••••••••.••.......•....••.•.•••..••••••.••.......•.....•••.. 3 144M TX-RX UNIT (X57-3580-1 2) .••••............•••... 43
EXPLODED VIEW ................................................... 21
SCHEMATIC DIAGRAM ......................................... 47
PACKING ..•............................................................. 25 144M TX-RX UNIT (X57-3580-1 2) ....................... 47
ADJUSTMENT ........................................................ 26
PC BOARD VIEWS ................................................. 49
PC BOARD VIEWS ................................................. 31 220M TX-RX UNIT (X57-3810-10) ....................... 49
CONTROL UNIT (X53-3460-11 ) .......................... 31 SCHEMATIC DIAGRAM ......................................... 53
DISPLAY UNIT (X54-3130-11) ••••.•.....••......•........ 35 220M TX-RX UNIT (X57-3810-10) ....................... 53
SCHEMATIC DIAGRAM ......................................... 39 BLOCK DIAGRAM .................................................. 55
CONTROL UNIT .................................................. 39 LEVEL DIAGRAM ................................................... 57
DISPLAY UNIT .................................................... 39 SPECIACATIONS ............................... BACK COVER