GTR 8000 Base Radio
You can replace a preselector filter without shutting the power down.
9.8.1 How To Replace a Preselector Filter
Procedure Steps
1
Wear an electrostatic discharge (ESD) strap and connect its cable to a verified good ground. This strap must be
worn throughout this procedure to prevent ESD damage to any components.
2
Remove the preselector from the base radio, as follows:
a. Remove the two screws which secure the preselector to the flange of the base radio using T20 bit.
b. Label and disconnect the left and right QMA cables from the front of the preselector.
3
Install the preselector to the base radio, as follows:
a. Secure the slide rail to the base radio flange using the two screws which were previously removed.
b. Reconnect the left and right QMA cables to the preselector.
c. Tune the preselector. See
5.8 Tuning a Preselector, page 5-4
.
4
Verify that the system is operating properly using fault management software, including:
• Unified Event Manager.
• Transmitter Metering Screen in Configuration/Service Software (CSS).
9.9 Replacing Transmit Filters (700/800 MHz)
shows the transmit filter installed on a tray.
9-28
6871022P86-A - November 2012
Summary of Contents for GTR 8000
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