BendixKing SG 465 System EFS 50 - Manual (Page 148)

Operating Instructions
5.1 Issued 4/95 SW 06/07/08/11
Consult Aircraft Flight Manual
Supplement for specific proce-
dures and limitations in opera-
tion.
PREFLIGHT PROCEDURES
◗ START UP
At engine start, power should not
be applied to the EHI 50 system,
low voltage may turn the EFS 50
system off momentarily, and tran-
sient voltages may induce pre-
mature failures. With engines
operating, turn on avionics mas-
ter switches, and turn on NAV
systems to remove the EHSI
flags.
When power is initially applied to
the EFS 50 system, various flags
maybe annunciated on the dis-
play, representing systems not
yet operational.
◗ SELF TEST
Adjust BRT control on the
EFS 50 CP 467, and CP 469 for
the desired brightness.
After a short warm-up time, press
and hold the TST/REF button for
three seconds to display the
SELF TEST. A SELF TEST
PASS or SELF TEST FAIL mes-
sage will be annunciated. If the
system is operating properly the
SELF TEST PASS message will
be annunciated. If a malfunction
exists, SELF TEST FAIL will be
annunciated and the system
should be serviced. Refer to fig-
ure 5.1 and 5.2, Self Test annun-
ciation. Additionally, the pilot
should ensure that the compass
scale is white, which indicates
that all three colors are opera-
tional in the display unit.
Note: Performing the EFS 50
Self Test is not required at
anytime. If a failure was to
occur or exist, the small RED
SG in a red box would be dis-
played. This test is intended
to familiarize the pilot with the
various flagging methodology
used and a quick check for
proper color presentation.
The EADI self test page will auto-
matically revert to a normal EADI
display.
❏ Software 07 and later will also
cause the EHSI to automatically
revert from the selftest page to
normal operation.
◗ PUSH BUTTON TEST
Check each push button function
on the EFS 50 control panel.
Push button operation should be
as described in 2.1 EHSI Opera-
tion, 2.2 EADI Operation, 2.3
RADAR Operation, and 2.4 MFD
Operation.
PRE-TAKEOFF
PROCEDURES
After the system test has been
completed, select the desired Pri-
OPERATING INSTRUCTIONS