User's Manual

Manual 7-9375-4 Page 14TX RX Systems Inc. 10/29/04
signal returns to normal level. The next amplifier
toward the output end of the system will proba-
bly be the one that failed.
or
Measure the gain at any convenient frequency
in the working frequency band to verify that the
performance is still within specifications.
Power Amplifier Replacement
The SB II power amplifiers are field replaceable.
Follow the steps listed below in sequential order.
The required tools are a #1 Phillips screwdriver
and a 5/16” open-ended wrench.
Note:
Power to the SB II cabinet must
be turned OFF during the power
amplifier replacement process.
1) Remove the Phillips screws which hold the
amplifier into place, refer to
Figure 10
. The nuts
holding the screws are pressed into the cabinet
NOTE
Figure 10
: Remove 14 mounting screws to detach amplifier assembly from cabinet.
Remove Screws
Remove Screws
Remove
Screws
Remove
Screws
Figure 11
: Slide amplifier towards bottom of cabi-
net to remove upper cable.
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