Page 5-14 Vector-LP Radio Beacon Transmitter Technical Instruction Manual
Issue 1.1 Section 5 Maintenance and Troubleshooting
5.8.3 Interface PWB Replacement
See 5.8 first. Remove the interface PWB
(A11) as follows.
NOTE
The interface PWB is located on the back of
the exciter panel (see Figure 4-1).
(a) Remove the RF power module(s) from
the transmitter (see 5.6.1) to gain
access to the interface PWB.
(b) Remove all connections (ribbon cables,
D-subs and quick-disconnects) to the
interface PWB.
(c) Using a short Philips screwdriver,
remove and retain ten sets of M3
mounting hardware.
(d) Install the new interface PWB. Re-
install connections. Use the connector
tag labels or the connector mating
information in Section 8 to determine
proper connections.
(e) Reinstall the RF power module(s) in the
transmitter (see 5.6.2).
5.9 BATTERY BOOST ASSEMBLY
REPLACEMENT
Replace a defective battery boost assembly
(A16) as follows:
NOTE
The battery boost PWB (A16A1) is not
provided as a spare part on its own. If a
spare is purchased, it is provided as part of
the entire battery boost assembly (A16).
For ease of maintenance it should be
replaced as an assembly, as described in
this paragraph.
(a) Press the Control - RF OFF switch.
Switch off the ac power and disconnect
the dc supply, if applicable.
(b) Disconnect the dc input wiring from in
terminal block A16TB1
(c) Remove the access panel at the back
of the transmitter (see Figure 2-2),
noting it is secured by 12 M3 screws.
(d) Remove all connections (D-sub and
quick-disconnects) to the battery boost
assembly.
(e) Remove and retain four sets of M3
mounting hardware for the battery
boost assembly at the back of the
transmitter (see Figure 2-2) and two
sets of M3 mounting hardware on the
bottom of the transmitter (see Figure
5-1). Remove the battery boost
assembly.
(f) On the replacement assembly, ensure
that shorting jumpers A1E5 and A1E7
through A1E10 are installed in the
same position as the replaced
assembly (see Table 3-8).
(g) Install the new battery boost assembly
using retained hardware for the back
and the bottom. Re-install dc input
wiring and mating connectors. Use the
connector tag labels or the connector
mating information in Section 8 to
determine proper connections.
(h) Reinstall the access panel removed in
step (c).
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