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COMPONENT MAINTENANCE MANUAL

AVIATION RECORDERS

Model FA5000

Rev. 03 Page 230

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 205. Main Processor Troubleshooting Chart (Continued)

Item

Function Type Failure

Mode

Local Effect Next Effect End Effect

E020

− CAM

and

Pre

Amp

Power

Audio I/P − Power The CAM

and Pre Amp

Power are

open

The power is

note available

to the Cockpit

Area Micro-

phone or the

Preamplifier

Power

Loss of Cockpit

Area Micro-

phone &

Preamplifier

Power

Loss of Cockpit Area Micro-

phone & Preamplifier Power

Audio I/P − Power The CAM

and Pre Amp

Power are

shorted

The output

voltage is not

disrupted and

the system

/FPGA/DAP

software is not

alerted

The system

software is un-

able to disrupt

this output via

control pin from

the FPGA

Loss of Cockpit Area Micro-

phone & Preamplifier Power

F021

− Ana-

log

Audio

Monit-

or O/P

Ch HI

Audio O/P HI The Analog

Audio Monit-

or O/P Ch HI

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

Audio Monitor

Output Chan-

nel HI does not

function

Loss of the Analog Audio Mon-

itor Output Channel HI

Audio O/P HI The Analog

Audio Monit-

or O/P Ch HI

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

Audio Monitor

Output Chan-

nel HI does not

function

Loss of the Analog Audio Mon-

itor Output Channel HI

F022

− Ana-

log

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

Audio 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 shor-

ted

The high out-

put is not

scaled up by

the output

stage and

does not pass

through the

output trans-

former

The Analog

Audio Monitor

Output Chan-

nel LO does

not function

Loss of the Analog Audio Mon-

itor Output Channel LO

Rev.04 Page 230

Mar. 21/14

The document reference is online, please check the correspondence between the online documentation and the printed version.

Brand	L3
Model	FA5000
Category	Voice Recorder
Language	English

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