COMPONENT MAINTENANCE MANUAL
AVIATION PRODUCTS
Model FA5000
Rev. 02 Page 140
July 21/17
Testing & Fault Isolation
23–70
−
30
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Table 104 Main Processor Troubleshooting Chart (Continued)
Item
ID
Function Type
Failure
Mode
Local Effect
Next Effect
End Effect
Watch Dog Timer;
ARINC 429 RX/TX; Did-
crete I/Ps and O/Ps;
FDR Data; Frequency
Counter; CSMU Inter-
face; Power Supply
Status
Single Event
Upset (SEU)
The FPGA ini-
tially does not
operate: It is in
an undeter-
mined condi-
tion
The MP PWA
initially does
not operate
The CVDR initially does not oper-
ate: some data may be corrupt,
lost and/or may not be recorded,
stored or copied NOTE: The cor-
rupted FPGA data is erased and
replaced
A003
−
CSMU
Inter-
face
Watch Dog Timer;
ARINC 429 RX/TX; Did-
crete I/Ps and O/Ps;
FDR Data; Frequency
Counter; CSMU Inter-
face; Power Supply
Status; ARINC 717;
RS422
Over/Under
Voltage
The CSMU In-
terface fails:
The DSP and
FPGA internal
resources/re-
gisters are un-
able to com-
municate with
the CSMU
The MP PWA
fails to operate
The CVDR fails to operate
Watch Dog Timer;
ARINC 429 RX/TX; Did-
crete I/Ps and O/Ps;
FDR Data; Frequency
Counter; CSMU Inter-
face; Power Supply
Status; ARINC 717;
RS422
Incorrect O/P The CSMU In-
terface fails:
The DSP and
FPGA internal
resources/re-
gisters are un-
able to com-
municate with
the CSMU
The MP PWA
fails to operate
The CVDR fails to operate
Watch Dog Timer;
ARINC 429 RX/TX; Did-
crete I/Ps and O/Ps;
FDR Data; Frequency
Counter; CSMU Inter-
face; Power Supply
Status; ARINC 717;
RS422
Single Event
Upset (SEU)
The CSMU ini-
tially does not
operate
The MP PWA
initially does
not operate
The CVDR initially does not op-
erate: some data may be cor-
rupt, lost and/or may not be re-
corded, stored or copied
NOTE: The DSP and the
FPGA’s internal resources/re-
gisters reset and communica-
tion is re
−
restablished with the
CSMU
A004
−
Memor
y
SEER
OM
Non
−
Volatile Memory:
Configuration and Error
Log
Loss of
Power
The SEEP-
ROM fails: Un-
able to stores
errors, identify
location, part
number, MAC
Address, or
perform Time
Sharing
The MP PWA
fails to operate
The CVDR PWA fails to oper-
ate
Non
−
Volatile Memory:
Configuration and Error
Log
Over/Under
Voltage
The SEEP-
ROM fails: Un-
able to stores
errors, identify
location, part
number, MAC
Address, or
perform Time
Sharing
The MP PWA
fails to operate
The CVDR PWA fails to oper-
ate
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