COMPONENT MAINTENANCE MANUAL
AVIATION RECORDERS
Model FA5000
Rev. 03 Page 220
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 (Continued)
Pin
ID
Signal Type
Signal Function
Failure Mode
Local Effect
End Effect
34
Differential
ARINC717 ()
FDR Data Output
ARINC 717 Low
The signal path is
shorted
Disrupted FDR Data
Output (ARINC 717
Low) echoed back to
FDAU
Disrupted FDR Data
Output (ARINC 717
Low) echoed back to
FDAU
35
Differential
ARINC429 ()
ATC Digital Input Low
The signal path is
open
Data disrupted/corrup
ted Loss of ability to
acquire ATC Digital In
put Low
Unable to store ATC
Digital Input Low signal
data into the CSMU
35
Differential
ARINC429 ()
ATC Digital Input Low
The signal path is
shorted
Data disrupted/corrup
ted Loss of ability to
acquire ATC Digital In
put Low
Unable to store ATC
Digital Input Low signal
data into the CSMU
36
Differential
ARINC429
(+)
ATC Digital Input
High
The signal path is
open
Data disrupted/corrup
ted Loss of ability to
acquire ATC Digital In
put High
Unable to store ATC
Digital Input High signal
data into the CSMU
36
Differential
ARINC429
(+)
ATC Digital Input
High
The signal path is
shorted
Data disrupted/corrup
ted Loss of ability to
acquire ATC Digital In
put High
Unable to store ATC
Digital Input High signal
data into the CSMU
37
Power
Area Microphone 18V
Power
The signal path is
open
Loss of bias to Area Mi
crophone
Loss of Area Micro
phone functionality
37
Power
Area Microphone 18V
Power
The signal path is
shorted
Loss of bias to Area Mi
crophone
Loss of Area Micro
phone functionality
38
Differential
Audio ()
Area Microphone Sig
nal Low
The signal path is
open
Loss of bias to Area Mi
crophone
Loss of audio from
Area Microphone
38
Differential
Audio ()
Area Microphone Sig
nal Low
The signal path is
shorted
Loss of bias to Area Mi
crophone
Loss of audio from
Area Microphone
39
Differential
ARINC429
(+)
Area Microphone Sig
nal High
The signal path is
open
Audio from the Area
Mic Signal Low is dis
rupted
Fails to record no au
dio is recorded
39
Differential
ARINC429
(+)
Area Microphone Sig
nal High
The signal path is
shorted
Audio from the Area
Mic Signal Low is de
graded due to interfer
ence
Degraded EMI
40
Differential
ARINC717
(+)
ARINC 429 Input
High
The signal path is
open
Loss of ability to record
ARINC 429 Input High
signal data
Unable to record
ARINC 429 High signal
data
40
Differential
ARINC717
(+)
ARINC 429 Input
High
The signal path is
shorted
Loss of ability to record
ARINC 429 Input High
signal data
Unable to record
ARINC 429 High signal
data
41
Differential
ARINC717 ()
FDR Data Input
ARINC 717 High
The signal path is
open
Loss of ability to ac
quire coherent FDR
Data Input (ARINC 717
High)
Unable to record good
ARINC 717 data input
from the Main Pro
cessor
41
Differential
ARINC717 ()
FDR Data Input
ARINC 717 High
The signal path is
shorted
Loss of ability to ac
quire coherent FDR
Data Input (ARINC 717
High)
Unable to record good
ARINC 717 data input
from the Main Pro
cessor
Rev.04 Page 220
Mar. 21/14
The document reference is online, please check the correspondence between the online documentation and the printed version.
