Tcxo Unit (So-2) - Kenwood TS-50S Instruction Manual

TCXO UNIT (50·2)
1 Remove the transceiver bottom cover (9 screws).
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2 Remove the shield covering the control board (2
screws).
3 CAREFULLY remove the 3 flat cables from the
control board, and lift the board.
4 CAREFULLY remove the 3 coaxial cable
connectors (CN2, CN3, CN4) and the 4-pin
connector (CN1) from the PLL board. Do not pull
on the wires to remove CNI. Remove the 8
screws holding the PLL board.
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10 OPTIONS INSTALLATION
5 Lift the PLL board.
6 Position and solder the SO-2. Use a low power
iron (25W) and rosin core solder. Do not overheat
the PC board and lift foil traces, and do not use
excess solder and cause a solder bridge (short).
Clip the SO-2 leads flush to the PC board after
soldering.
7 Cut the jumper wires at WI and W2 on the PLL
board.
S Re-position the PLL board.
9 Tighten the 8 screws to secure the PLL board.
Reconnect the 3 coaxial cable connectors (CN2,
CN3, CN4) and the 4-pin connector (CN1).
10 Reinstall the control board and CAREFULLY
reconnect the flat cables.
11 Reinstall the shield using the 2 screws.
12 Reinstall the bottom cover (9 screws).
Note:
Do not pinch
your
fingers
nor any
wires while
reassembling.
56