Chapter 6: Gtr 8000 Base Radio Maintenance; Fan Grill Cleaning Instructions; Aligning The Internal Frequency Reference Oscillator - Motorola ASTRO 25 GTR 8000 Manual

MN003286A01-E

Chapter 6: GTR 8000 Base Radio Maintenance

Chapter 6
GTR 8000 Base Radio Maintenance
This chapter describes periodic maintenance procedures relating to the GTR 8000 Base Radio.
6.1

Fan Grill Cleaning Instructions

If the station equipment is installed in a dusty environment, take precautions to filter the air used for a
forced cooling of the station. Excessive dust drawn across and into the device circuit modules by the
cooling fans can adversely affect heat dissipation and circuit operation. In such installation, be sure to
clean or replace external filtering devices periodically.
If dust has accumulated on the fan grills, cleaning the fan grills is recommended. When cleaning, take
care to prevent dust from being pulled into the modules. Use a damp cloth to wipe the front of the fan
grills. When removing the power supply, turn off the unit before proceeding.
6.2

Aligning the Internal Frequency Reference Oscillator

NOTICE: The base radio must be turned on for at least one week before the internal frequency
reference oscillator is aligned.
See "Base Radio Service Help → Service Screens → Alignment Screens" in the CSS Online Help
for the alignment procedures.
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