Appendix A - Troubleshooting; Ontacting The Actory For Ssistance; Table 3 Troubleshooting Guide; A Ssistance - Garmin Apollo SL40 Installation Manual

A A - T
PPENDIX
This appendix provides information to assist troubleshooting if problems occur after
completing the installation. Use Table 3 to assist in troubleshooting.
Problem
The SL40 does not power on.
The unit does not transmit.
Mic Sensitivity varies
The sidetone and intercom
levels are too low or high.
The intercom doesn't function.
C
ONTACTING THE
If the Apollo SL40 unit fails to operate despite troubleshooting efforts, contact the Garmin AT
factory for assistance.
Garmin AT, Inc.
2345 Turner Rd. SE
Salem, Oregon 97302
USA
Phone (503) 581-8101 or 1-800-525-6726
http://www.garminat.com
Be prepared to offer the following information about the installation:
x Installation configuration (accessories, antenna, ...)
x Model number, part number with mod levels, and serial number
x Software version
x Description of problem
x Efforts made to isolate the problem
Apollo SL40 Installation Manual
ROUBLESHOOTING

Table 3 Troubleshooting Guide

Cause
The unit is not getting power.
The TxKey input is not being pulled
low.
A weather channel is selected.
The input voltage is too low.
Mic Levels need adjustment
Wrong type of headsets, or level
needs adjustment.
Control input not connected.
No voice activation, or have to talk
too loud.
F A
ACTORY FOR
Solution
Check power connections, breakers,
and main avionics switch.
Check the TxKey (mic key) input,
pulled low for transmit.
Select a different frequency, the unit
will not transmit on a weather
channel.
Increase input supply voltage to > 9
volts DC.
See the Mic Level Adjustment on
page 13
See the Sidetone Level Adjustment on
page 12.
The intercom select input must be
pulled to ground to turn on the
intercom function.
Change the intercom squelch
threshold using the setup function
described in the user's manual.
SSISTANCE
Troubleshooting
21