Installation manual

Troubleshooting
Apollo SL30 Installation Manual
47
APPENDIX A - TROUBLESHOOTING
This appendix provides information to assist troubleshooting if problems occur after
completing the installation. Use Table 4 to assist in troubleshooting.
Table 4 - Troubleshooting Guide
Problem Cause Solution
The SL30 does not power on. The unit is not getting power. Check power connections, breakers,
and main avionics switch.
No NAV audio Output disabled or set to a low level. Check System page; NAV Options;
NAV Audio Level.
NAV audio in Comm Mixed with Comm feature. Check System page; NAV Options;
Mix NAV Audio With Com.
The SL30 does not transmit. The TxKey input is not being pulled
low.
Check the TxKey (mic key) input,
pulled low for transmit.
A weather channel is selected. Select a different frequency, the unit
will not transmit on a weather
channel.
No power to the Comm. Make sure power input is connected
to the Comm 15 pin connector.
The input voltage is too low. Increase input supply voltage to > 9
volts DC.
The sidetone level is too low or
too high.
Wrong type of headsets, or level
needs adjustment.
See the
Sidetone Level Adjustment on page
32.
The intercom doesn’t function. Control input not connected. The intercom select input must be
pulled to ground to turn on the
intercom function.
Active frequency signal present. Change the active frequency. The
active frequency has priority.
No voice activation, or have to talk
too loud.
Change the intercom level threshold
using the setup function described in
the user’s manual.
CONTACTING THE FACTORY FOR ASSISTANCE
If the Apollo SL30 unit fails to operate despite troubleshooting efforts, contact the UPS
Aviation Technologies factory for assistance.
UPS Aviation Technologies Inc.
2345 Turner Rd. SE
Salem, Oregon 97302
USA
Phone [phone] or 1-800-525-6726
Be prepared with the following information about the installation:
• Installation configuration (accessories, antenna, ...)
• Model number, part number with mod levels, and serial number