COMPONENT MAINTENANCE MANUAL
AVIATION RECORDERS
Model FA5000
Rev. 03 Page 230
Feb. 27/13
FDR Function Testing & Fault Isolation
23–70−40
Use or disclosure of information on this sheet is subject to
the restrictions on the cover page of this document.
Table 205. Main Processor Troubleshooting Chart (Continued)
Item
ID
Function Type Failure
Mode
Local Effect Next Effect End Effect
E020
− CAM
and
Pre
Amp
Power
Audio I/P − Power The CAM
and Pre Amp
Power are
open
The power is
note available
to the Cockpit
Area Micro-
phone or the
Preamplifier
Power
Loss of Cockpit
Area Micro-
phone &
Preamplifier
Power
Loss of Cockpit Area Micro-
phone & Preamplifier Power
Audio I/P − Power The CAM
and Pre Amp
Power are
shorted
The output
voltage is not
disrupted and
the system
/FPGA/DAP
software is not
alerted
The system
software is un-
able to disrupt
this output via
control pin from
the FPGA
Loss of Cockpit Area Micro-
phone & Preamplifier Power
F021
− Ana-
log
Audio
Monit-
or O/P
Ch HI
Audio O/P HI The Analog
Audio Monit-
or O/P Ch HI
is open
The high out-
put is not
scaled up by
the output
stage and
does not pass
through the
output trans-
former
The Analog
Audio Monitor
Output Chan-
nel HI does not
function
Loss of the Analog Audio Mon-
itor Output Channel HI
Audio O/P HI The Analog
Audio Monit-
or O/P Ch HI
is shorted
The high out-
put is not
scaled up by
the output
stage and
does not pass
through the
output trans-
former
The Analog
Audio Monitor
Output Chan-
nel HI does not
function
Loss of the Analog Audio Mon-
itor Output Channel HI
F022
− Ana-
log
Audio
Monit-
or O/P
Ch LO
Audio O/P LO The Analog
Audio Monit-
or O/P Ch
LO is open
The high out-
put is not
scaled up by
the output
stage and
does not pass
through the
output trans-
former
The Analog
Audio Monitor
Output Chan-
nel LO does
not function
Loss of the Analog Audio Mon-
itor Output Channel LO
Audio O/P LO The Analog
Audio Monit-
or O/P Ch
LO is shor-
ted
The high out-
put is not
scaled up by
the output
stage and
does not pass
through the
output trans-
former
The Analog
Audio Monitor
Output Chan-
nel LO does
not function
Loss of the Analog Audio Mon-
itor Output Channel LO
Rev.04 Page 230
Mar. 21/14
The document reference is online, please check the correspondence between the online documentation and the printed version.
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