Garmin GPS 150XL - Manual (Page 93)

APPENDIX
B
INSTALLATION &
MAINTENANCE
Appendix B
Installation, Removal and Maintenance of the GPS 150XL
The aviation rack is designed to allow easy removal of the GPS 150XL. This enables you to
use the unit at home to create routes, interface to a PC, etc. using an optional AC adapter.
To install the GPS 150XL into the aviation rack:
1. Insert a 3/32” allen wrench in the small hole adjacent to the dual knob.
2. Rotate the wrench counterclockwise until it stops to ensure the pawl latch is in the
proper position.
3. Insert the GPS 150XL into the aviation rack and rotate the wrench clockwise to secure the unit. To ensure
proper connector seating, gently press on the left side of the unit until tightened.
To remove the GPS 150XL from the aviation rack:
1. Insert a 3/32” allen wrench in the small hole adjacent to the dual knob.
2. Rotate the wrench counterclockwise until the GPS 150XL can be removed from the rack.
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The GPS 150XL is built to exacting standards and does
not require user maintenance. If the faceplate and lens
require cleaning, use a soft cloth and non-abrasive
cleaner.
The user data is maintained by an internal battery with
a projected life of 3 to 5 years. If the GPS 150XL
detects a low memory battery, you will be informed
with the message ‘Memory battery low’. Failure to
have the battery replaced may result in loss of data
each time you turn your unit off. This will greatly
increase satellite acquisition time and no user data will
be saved. This condition will be accompanied by the
message ‘Stored data lost’.
The GPS 150XL contains a crystal oscillator which may
drift after many years of operation. If the unit detects
excessive oscillator drift, you will be informed with the
message ‘Osc needs adjustment’. When this occurs,
contact an authorized GARMIN service center for ser-
vice. Failure to do so may result in severely degraded
acquisition performance.
3/32” ALLEN
WRENCH
150xl manual B 8/4/98 1:10 PM Page 83