UPS Aviation Technologies AT7000, Руководство по установке

Страница: 69 / 76

Installation Manual Troubleshooting
560-0405-00 Rev –
December 14, 2001
Page 59
© 2001 by UPS Aviation Technologies Inc.
9.3 Troubleshooting
The transponder has several system checks that can assist in troubleshooting. A self-test
can be conducted from the transponder front panel and from the control panel.
9.3.1 System Test
Before conducting this test, verify the following:
•
Air data computer breaker(s) are closed and the unit(s) function
•
Mode S transponder breaker is closed
•
Transponder control panel breaker is closed
The table on the following page offers some troubleshooting information. The screens
are accessed in the ‘Self Test Mode’. To enter the ‘Self Test Mode’, at power up, press
the test button on the front panel. The start of ‘Self Test Mode’ turns all six front panel
lights ON for 3 seconds and displays the ‘Self Test Running’ page.
The panel lamps and display indicates the current faults until the test mode ends. Press-
ing the test button while in test mode displays faults beginning with current flight leg.
Subsequent presses of the test button cycles through the flight leg faults for up to ten
flight legs.
At the end of the ‘Self Test Mode’, the lamps all turn off and the user interface changes
to the normal mode.