Vertex Standard FT-1000MP - Manual (Page 114)

Page 112 O
PERATING
M
ANUAL
This section contains the installation procedures for
installable options available for the MARK-V FT-1000MP
Field. A complete list of options and their correspond-
ing Yaesu P/N is provided on pages 5 and 6 of this
manual. Please check with your dealer for pricing and
availability.
Installing Internal Accessories
TCXO U
NIT
The Temperature-Compensated Crystal Oscillator
is the heart of the master reference oscillator used
throughout the transceiver. An optional TCXO unit is
available for installation into the MARK-V FT-1000MP
Field. The ±0.25-ppm TCXO-6 replaces the factory-
installed TCXO unit, and it provides enhanced fre-
quency stability compared to the standard ±0.5-ppm
module.
If you also have the optional YF-115C Sub Receiver
filter, now would be a good time to install it, as its mount-
ing position is also exposed during the TCXO installa-
tion procedures.
TCXO-6 Installation
r Disconnect all cables from the transceiver.
r Referring to Figure 1, remove the carrying handle
and its two screws (
Ú
), then remove the four
screws (
ð
) on each side of the transceiver, and
the seven screws (
¢
) from the bottom of the trans-
ceiver, then lift off the bottom cover.
r Referring to Figure 2, remove the three screws ( Æ
)
along the top edge of the rear panel, then lift off the
top cover.
r Locate the factory-installed TCXO UNIT in the front
right corner of the chassis (see drawing below), and
remove the wiring connector from the board. Use a
small screwdriver to pry up the rear edge of the
connector, and avoid pulling on the wires.
r Remove the four screws at the corners of the board,
and remove the factory-installed TCXO UNIT.
r Position the new TCXO-6 in place, and use the
same screws just removed to affix the new board
in place.
r Reinstall the wiring connector.
This completes the installation; replace the covers
and carrying handle with its screws removed above
(unless installing other options now).
Figure 2
Figure 1
YF-115C
Mounting Location
TCXO-6 Mounting Location
(Replace with the factory-installed TCXO Unit)