L3 FA2100 CVR Component Maintenance Manual With Illustrated Parts List page 263

capacitor (1−130) to the top of the rear panel assembly using the support ca-
pacitor bracket (1−141).
(14) Connect the red blade connector (39 Vdc Hot) to the top, J4, connector on the
front side of the Aircraft Interface PWA.
(15) Connect the black blade connector (39 Vdc Return) to the lower, J5, connector
on the front side of the Aircraft Interface PWA.
D. Audio Compressor PWA (AC) Installation
(See Figure 703 or IPL Figure 1, Item 155)
The Model FA2100's Audio Compressor PWA is mounted to the Aircraft Interface
PWA located in the rear panel assembly of the recorder chassis. It provides digital
conversion and compression of the input audio stream. It interfaces to the Acquisi-
tion Processor PWA via interconnect cable assembly W003 through the J2 connec-
tor; and to the Aircraft Interface PWA via cable assembly W002 through the J1 con-
nector.
(1) Ensure that the Aircraft Interface PWA (1-105) is installed into rear panel assembly
(1-90) as described in paragraph C. above.
(2) Lay the rear panel assembly on its back with the Aircraft Interface PWA facing up.
(3) Place the Assembly Support Tool fixture, Table 701: item 5, between the Aircraft
Interface PWA (1-105) and the rear panel assembly (1-90). Position the fixture
such that the inner part of the "U" shape is around the J1A connector.
NOTE:
(4) Secure Audio Compressor PWA (1-155) to the Aircraft Interface PWA standoffs
(1-120) using (4) pan-head screws (1-160) coated with adhesive Table 701: item 1.
Only hand tighten right now.
(5) Tighten the (4) pan-head screws in a cross pattern and torque to a value of 5-6
in./lbs.
(6) Remove the Assembly Support Tool fixture, Table 701: item 5 from under the Air-
craft Interface PWA.
(7) Attach W002 (1−170) from the Aircraft Interface PWA to J1 on the Audio Compres-
sor PWA.
(8) Attach W003 (1−165) to J2 on the Audio Compressor PWA.
Use or disclosure of information on this sheet is subject
to the restrictions on the cover page of this document.
The document reference is online, please check the correspondence between the online documentation and the printed version.
AVIATION RECORDERS
COMPONENT MAINTENANCE MANUAL
FA2100CVR
This fixture is used to support the Aircraft Interface PWA
and prevent damage to the circuit board when installing the
two bottom standoff screws that attach to the Audio Com-
pressor PWA.
23–70–04
Assembly
Rev. 15 Page 706
Apr. 14/16