COMPONENT MAINTENANCE MANUAL
AVIATION PRODUCTS
Model FA5000
Rev. 02 Page 146
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
F022 −
Analog
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 Au-
dio 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 shorted
The high out-
put is not
scaled up by
the output
stage and
does not pass
through the
output trans-
former
The Analog Au-
dio Monitor
Output Chan-
nel LO does
not function
Loss of the Analog Audio Mon-
itor Output Channel LO
G023
−
UART
1 GSE
UART1 TxD The UART1
TxD GSE is
open
There is no
communication
between the
UART1 and
the front panel
RJ−45 GSE
port
The MP PWA
has no GSE
capability
Communication is disrupted
with the GSE
UART1 TxD The UART1
TxD GSE is
shorted
There is no
communication
between the
UART1 and
the front panel
RJ−45 GSE
port
The MP PWA
has no GSE
capability
Communication is disrupted
with the GSE
G024
−
UART
1 GSE
UART1 RxD The UART1
RxD GSE is
open
There is no
communication
between the
UART1 and
the front panel
RJ−45 GSE
port
The MP PWA
has no GSE
capability
Communication is disrupted
with the GSE
UART1 RxD The UART1
RxD GSE is
shorted
There is no
communication
between the
UART1 and
the front panel
RJ−45 GSE
port
The MP PWA
has no GSE
capability
Communication is disrupted
with the GSE
G025
−
UART
0 RIPS
UART0 TxD The UART0
TxD RIPS is
open
There is no
communication
between the
UART0 and
the internal
RIPS
The MP PWA
has no RIPS
capability
Communication is disrupted
with the RIPS
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