Install Manual Part 2

SKY497
Installation Manual
3-7
Rev. C
b. Check audio connection to the TRC:
1) 600-ohm audio systems should be connected to P1-92 (AUDIO_H).
2) 150-ohm audio systems should be connected to P1-91 (AUDIO_L).
3) Audio common is connected to P1-90 (AUDIO_C).
NOTE
Audio output from the TRC is transformer isolated.
7. If SKYWATCH fails the self-test:
a. The "SKY497 Failed" screen (see figure 3-6) with an error message indicating the type of failure
will be displayed.
b. The voice message, "TRAFFIC ADVISORY SYSTEM TEST FAILED", will be enunciated over the
cockpit audio system.
c. Soft-key (1) will be labeled TEST. To re-test, press soft-key (1).
d. Soft-keys (2), (3), and (4) are not used.
Figure 3-6. Self Test Failed Screen
e. Refer to the fault isolation procedures in Chapter 4.