COMPONENT MAINTENANCE MANUAL
AVIATION PRODUCTS
Model FA5000
Rev. 02 Page 102
July 21/17
Testing & Fault Isolation
23–70
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Use or disclosure of information on this sheet is subject to
the restrictions on the cover page of this document.
shooting procedure is provided for any of these assemblies. Attempting field repair on
any of these assemblies will void their warranty.
3. MODEL FA5000 CVR RECORDER IN-SERVICE CHECKOUT
A continuous Built-In-Test (BIT) capability is provided at power up to establish and moni-
tor the mission fitness of the hardware. The built-in-test feature has been designed to
perform a continuous test of all bits within the solid-state memory located in the Crash
Survivable Memory Unit (CSMU). Any faults with the unit are stored in non
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volatile RAM
as a fault history log to aid in troubleshooting.
The Model FA5000 CVR’s built-in-test (BIT) philosophy is in accordance with guidelines
set forth in ARINC Reports 604
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1 and 624. Activating the BIT test is sufficient to deter-
mine the mission readiness of the Model FA5000 CVR Cockpit Voice Recorder System.
This operational test is performed as a pre-flight functional checkout of the Model FA5000
CVR and is activated using front panel controls on its associated control unit.
Bulk erasure of the Model FA5000 CVR storage medium is accomplished using the
associated control unit red ERASE pushbutton switch. Aircraft wiring interlocks must be
set (that is, landing gear must be down and brakes locked) to allow the CSMU (solid-state
flash memory) to be erased. To erase the information stored in the flash memory, press
the ERASE pushbutton for more than 2 seconds and release. A 400-Hertz tone should
be heard via the headset for less than 10 seconds.
Should a problem be detected with the Model FA5000 CVR and its associated control
unit, remove the units from the aircraft. To determine the fault, place the units on the test
bench for complete testing as listed in the procedures in Paragraph 5.
4. RECORDER INTERFACE UNIT (RIU)
This section provides instructions for connecting the Recorder Interface Unit to the ROC/7
and FA5000 CVR under test. Refer to Figure 201 for the ROC Automated Test Station
Software (CATS) FA5000 CVR test setup diagram.
CAUTION:Before proceeding, ensure that the power input select switch on the ROC is in
the proper electrical setting: 115 Vac or 230 Vac. If power input select switch is
not in the proper setting, this will cause failure or damage in the units.
A. READ
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OUT CENTER/7 (ROC/7) Interconnects
CAUTION:Make certain that all power is turned off before attaching cables. Failure to
turn off power before attaching cables will result in immediate and serious
damage to the unit. See Figure 101.
CAUTION:At time time, only DC input voltage will be used for auto testing.
(1) Connect the DC power cable (17TES0412) from the DC Power connector (J8)
on the rear of the RIU to a DC power supply that can generate 28 Volts 1 Amp.
The document reference is online, please check the correspondence between the online documentation and the printed version.
