COMPONENT MAINTENANCE MANUAL
AVIATION RECORDERS
Model FA5000
Rev. 03 Page 216
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 204. Aircraft Interface Troubleshooting Chart
Pin
ID
Signal Type
Signal Function
Failure Mode
Local Effect
End Effect
01
Differential
O/P ()
ATE Ethernet TX ()
The signal path is
open
ATE Ethernet TX ()
signal is not detected
Unable to perform in
tegrated auto test; no
results displayed
01
Differential
O/P ()
ATE Ethernet TX ()
The signal path is
shorted
ATE Ethernet TX ()
signal is not detected
Unable to perform in
tegrated auto test; no
results displayed
02
Differential
O/P (+)
ATE Ethernet TX (+)
The signal path is
open
ATE Ethernet TX (+)
signal is not detected
Unable to perform in
tegrated auto test; no
results displayed
02
Differential
O/P (+)
ATE Ethernet TX (+)
The signal path is
shorted
ATE Ethernet TX (+)
signal is not detected
Unable to perform in
tegrated auto test; no
results displayed
03
Shunt Dis
crete
ATE Present
The signal path is
open
ATE Present signal is
not detected
All recording enabled;
CVR Replay disabled;
FDR Inhibit is inactive
03
Shunt Dis
crete
ATE Present
The signal path is
shorted
ATE Present signal is
connected (that is, it is
shorted to ground)
All recording disabled;
CVR Replay enabled;
FDR Inhibit is active
04
Audio O/P (+)
Audio Output (Monit
or) Hi
The signal path is
open
No audio (voice) is
present
Unable to monitor au
dio
04
Audio O/P (+)
Audio Output (Monit
or) Hi
The signal path is
shorted
No audio (voice) is
present
Unable to monitor au
dio
05
Discrete
Erase CVR Input A
The signal path is
open
Loss of ability to erase
recorded audio
The recorder does not
erase recorded audio
05
Discrete
Erase CVR Input A
The signal path is
shorted
Loss of ability to erase
recorded audio
The recorder does not
erase recorded audio
06
Differential I/P
()
ATE Ethernet RX ()
The signal path is
open
ATE Ethernet RX ()
signal is not detected
Unable to perform in
tegrated auto test; no
results displayed
06
Differential I/P
()
ATE Ethernet RX ()
The signal path is
shorted
ATE Ethernet RX ()
signal is not detected
Unable to perform in
tegrated auto test; no
results displayed
07
Differential I/P
(+)
ATE Ethernet RX (+)
The signal path is
open
ATE Ethernet RX (+)
signal is not detected
Unable to perform in
tegrated auto test; no
results displayed
07
Differential I/P
(+)
ATE Ethernet RX (+)
The signal path is
shorted
ATE Ethernet RX (+)
signal is not detected
Unable to perform in
tegrated auto test; no
results displayed
08
Differential
Audio ()
Channel 1 Audio In
put Low
The signal path is
open
Degraded Audio Chan
nel 1 Low Signal
Fails to record no au
dio is recorded
08
Differential
Audio ()
Channel 1 Audio In
put Low
The signal path is
shorted
Degraded Audio Chan
nel 1 Low Signal
Fails to record no au
dio is recorded
09
Differential
Audio (+)
Channel 1 Audio In
put Hi
The signal path is
open
Degraded Audio Chan
nel 1 Low Signal
Fails to record no au
dio is recorded
09
Differential
Audio (+)
Channel 1 Audio In
put Hi
The signal path is
shorted
Degraded Audio Chan
nel 1 Low Signal
Fails to record no au
dio is recorded
Rev.04 Page 216
Mar. 21/14
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