Kenwood TS-990S, Service Manual

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DIAGRAM & CIRCUIT
BOARDS EDITION
This product uses Lead Free solder.
This product complies with the
RoHS
directive for the European market.
© 2013-4 PRINTED IN JA PAN
RQ005 (Y) 195 (B53-7038-00)
TS-990S
HF/50MHz TRANSCEIVER
REV
INTERCONNECTION DIAGRAM ...............................3
ACCESSORY UNIT (X42-3430-00) (A/10~J/10)
SCHEMATIC DIAGRAM (A/10) ............................4
PC BOARD............................................................5
SCHEMATIC DIAGRAM (B/10~J/10) ...................9
DC-DC UNIT (X43-3220-00) (A/3~C/3)
SCHEMATIC DIAGRAM .....................................10
PC BOARD..........................................................11
FINAL UNIT (X45-3880-00) (A/2,B/2)
PC BOARD..........................................................13
SCHEMATIC DIAGRAM .....................................15
DIGITAL UNIT (X46-3390-00)
SCHEMATIC DIAGRAM (1/3) .............................16
PC BOARD..........................................................17
SCHEMATIC DIAGRAM (2/3, 3/3) ......................19
PLL(MAIN) UNIT (X50-3220-00)
PC BOARD..........................................................21
SCHEMATIC DIAGRAM .....................................23
PLL(SUB) UNIT (X50-3230-00)
SCHEMATIC DIAGRAM .....................................24
PC BOARD..........................................................25
AT UNIT (X53-4410-00) (A/2,B/2)
PC BOARD..........................................................27
SCHEMATIC DIAGRAM .....................................31 CONTROL UNIT (X53-452X-XX)
SCHEMATIC DIAGRAM .....................................32
PC BOARD..........................................................33
DSP UNIT (X53-4530-00)
PC BOARD..........................................................35
SCHEMATIC DIAGRAM .....................................37
DISPLAY UNIT (X54-3850-00) (A/6~F/6)
SCHEMATIC DIAGRAM .....................................38
PC BOARD..........................................................39
RX UNIT (X55-313X-XX) (A/2,B/2)
SCHEMATIC DIAGRAM (B/2) ............................43
PC BOARD (B/2) .................................................43
SCHEMATIC DIAGRAM (A/2) ............................44
PC BOARD (A/2) .................................................45
TX-RX UNIT (X57-827X-XX) (A/2,B/2)
SCHEMATIC DIAGRAM (B/2) ............................47
PC BOARD (B/2) .................................................47
SCHEMATIC DIAGRAM (A/2) ............................48
PC BOARD (A/2) .................................................49
BLOCK DIAGRAM ...................................................51
SPECIFICATIONS ....................................................52
CONTENTS