Vertex Standard FT-1000MP manual Installing Internal Accessories, TCXO-6 Installation

Installing Internal Accessories

This section contains the installation procedures for installable options available for theMARK-VFT-1000MP. A complete list of options and their corresponding Yaesu P/N is provided on pages 5 and 6 of this manual. Please check with your dealer for pricing and availability.

Figure 1

Figure 2

TCXO UNIT

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-VFT-1000MP. The ±0.25-ppm TCXO-6replaces the factory-installed TCXO unit, and it provides enhanced frequency stabil- ity compared to the standard ±0.5-ppm module.

If you also have the optional YF-115CSub 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

rDisconnect all cables from the transceiver.

rReferring to Figure 1, remove the four screws (ð) on each side of the transceiver, and the seven screws (ž) from the bottom of the transceiver, then lift off the bottom cover.

rReferring to Figure 2, remove the six screws (Æ) from the top panel. Pry the top cover open and dis- connect the speaker cable from the speaker, then lift off the top and side covers.

rLocate 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.

rRemove the four screws at the corners of the board, and remove the factory-installed TCXO UNIT.

rPosition the new TCXO-6in place, and use the same screws just removed to affix the new board in place.

rReinstall the wiring connector.

This completes the installation; connect the speaker cable to the speaker on the top cover, then replace the all covers and screws removed above (unless install- ing other options now).

page 112 MARK-V FT-1000MP Operating Manual