COMPONENT MAINTENANCE MANUAL
AVIATION PRODUCTS
Model FA5000
Rev. 02 Page 140
July 21/17
Testing & Fault Isolation
23–70−30
Use or disclosure of information on this sheet is subject to
the restrictions on the cover page of this document.
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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