TB8100 Installation and Operation Manual Replacing Modules 95
© Tait Electronics Limited June 2005
4. PA Fan
a. Plug the power wires into the fan contact board
c and route the
wires around the PA fan opening
j.
b. Refit the PA fan/duct assembly onto its mounting bosses. Note
that the two inner mounting tabs
1) fit over the inner tabs of the
PMU fan. Ensure that all the power wires are secured under the
retaining hooks
1! and are not crimped.
c. Refit the fours screws labelled
b.
5. Carry out the instructions in “Final Reassembly” on page 101.
Important You must connect the fans to the correct sockets on the fan
contact board. If the fan connections are reversed, the
wrong fan will be activated when a module needs cooling.
The module may then fold back and shut down. When you
power-up the TB8100 BSS, check that the PMU fan runs
first, followed by the PA fan. Each fan will run for about
five seconds.
Important You must refit the correct duct to the PA fan. There are
several small but important differences between the duct for
a 5W or 50W PA and the duct for a 100W PA. Refer to
Figure 6.3 on page 101 for more details.
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