High-Stability Crystal; Unit; Carrying Handle - Icom IC-725 Instruction Manual

INSTALLATION
OF OPTIONS
9
9-4
CR-64
HIGH-STABILITY
CRYSTAL
UNIT
By
replacing
the
original crystal
unit
with
this unit,
the
total
frequency
stability
of the transceiver
will
be improved.
PA UNIT
CR-64
frequency
stability:
±0.5
ppm
(-30°C~+60°C,
-22°F~+140°F)
1)
Remove
covers
and the
PLL UNIT
following the
disassembly procedures on
p.
24.
2)
Remove
the crystal unit
from
the P.C.
board (PLL
UNIT).
3)
Unsolder the
4
positions
on
the P.C.
board
where
the
CR-64
will
be installed.
Use
a
de-soldering braid.
4) Install
the unit flush
with the
P.C.
board and
in
the
proper
direction.
•
For
correct installation,
symbols
on
the
bottom
of
the
CR-64 must
be identically
matched
with sym-
bols
on
the P.C. board.
5)
Bend the
unit leads flush
with the
foil
side of the P.C.
board and
solder
them.
6)
Trim the
leads
even with the
solder points.
7)
Replace the P.C.
board
and
covers.
9-5
MB-23
CARRYING HANDLE
The
handle
allows
you
to
easily
carry
and
transport the
transceiver.
Attach
the
MB-23
as
shown
in
the diagram.
NOTE:
Supplied screws with the MB-23
CANNOT
be used with
the IC-725.
Please use the screws supplied
in
the
IC-725
unpacking
to correctly attach the
MB-23.