BendixKing SG 465 System EFS 50 - Manual (Page 157)

Fault Annunciations
6.2 Issued 4/95 SW 06/07/08/11
the Symbol Generator. Once
annunciated, the Symbol Gener-
ator will continue to operate for at
least 30 minutes if the rated
ambient temperature is not
exceeded. To extend the operat-
ing time, reduce display informa-
tion and brightness to a mini-
mum. Refer to Figure 6.1 and
6.3.
◗ CP—CONTROL PANEL
(CP 467 OR CP 469/A)
A RED CP enclosed by a RED
box is annunciated left center of
the EHSI and lower left of the
EADI if a control panel switch
becomes stuck for greater than
10 seconds. If a switch fails the
display should maintain all cur-
rently selected conditions. If the
switch should become functional
the fault annunciation will be
removed and normal operation
will be restored. Refer to Figure
6.1 and 6.3.
There are two possible MFD con-
trol panel faults that can be dis-
played on the MFD. One fault is
the normal red CP fault caused
by a mode line failure. The sec-
ond fault is a red CCP fault
caused by a failure in the check-
list control panel processing. The
faults to be detected by the CP
469A to cause this annunciator
include the following:
1.CPU test failure
2.ROM test failure
3.RAM test failure
4.Stuck joystick or control panel
key
5. Invalid data in checklist/notes
EPROM (checksum failure). This
fault condition applies only if the
EPROM chip is NOT completely
erased. That is, if the checksum
test on EPROM chip data fails
because the chip is erased, a
CCP fault should NOT be raised.
This is because the CP469A will
come from the factory with the
EPROM chips erased, and it is
undesirable for the product to
show a fault straight out of the
box. Only if at least one of the
bits in the EPROM are pro-
grammed, and the EPROM
checksum test fails will a CCP
fault be generated.
◗ HEADING SELECT “BUG”
A RED X will be drawn through
the heading bug if there is a
heading select knob failure on
the EFS 50 control panel. Refer
to Figure 6.2.
◗ COURSE SELECT
A RED X will be drawn through
the course pointer head and tail if
there is a course select knob fail-
ure on the EFS 50 control panel.
Refer to Figure 6.2.
◗ RCP—RADAR CONTROL
PANEL (if equipped)
A RED RCP enclosed by a RED
box is annunciated at the lower
left center of the EHSI display if a
radar control panel failure is
detected. Refer to Figure 6.1.