C-COR Flex Max901e, Equipment Manual

Page: 92 / 172

7
7-4 Flex Max901e 1GHz Trunk and Bridger Amplifiers 1502154 Rev D
Return Switch Installation
This section provides the bench procedure to install return switches in a Flex Max901e trunk
amplifier (P/N FMTExxx-xxxxxxxN) or a Flex Max901e bridger amplifier (P/N FMBExxx-xxxxxxxN)
that was purchased without return switches. To minimize service interruption, C-COR recommends
installing the return switch in a spare RF module and then replacing the RF module with the spare
RF module that has the return switch installed.
➤
To install return switches in a spare RF module at the bench
1. Using a Torx T15 driver, remove the 17 Torx screws securing the RF module cover to the RF
module.
2. Remove all plug-in accessories.
3. For the trunk amplifier, locate and remove jumpers W17 , W18 , and W19 . For the bridger
amplifier, locate and remove jumpers
W18
and
W19
. See Figure 7.1 for the location of these
jumpers. Remove each jumper by performing the following substeps.
a. Use wire cutters to cut one end of the jumper.
b. Use needlenose pliers to grasp the jumper at the cut end.
c. While firmly grasping the jumper, use wire cutters to cut the other soldered end of
the jumper.
d. Remove the jumper with the needlenose pliers.
4. For the trunk amplifier, locate where the return switches RS1 , RS2 , and RS3 will be
installed. For the bridger amplifier, locate where the return switches
RS2
and
RS3
will be
installed. See Figure 7.1 for the location of the return switches.
5. Install each return switch by aligning the six pins of the return switch
(P/N BOM1500141-001) with the six socket holes in the RF module and firmly pushing the
return switch into the socket. The installed return switches for a bridger amplifier are
shown in Figure 7.2 on page 7-5.
6. Lower the RF module cover over the RF module and align the holes in the cover with the
mounting holes in the RF module.
7. Partially install the 17 Torx screws. Tighten these screws, finally torquing the Torx screws
to between 10 and 12 in-lbs (1.1 and 1.4 N·m).
Note A Value Max Transponder needs to be installed in a Flex Max901e to operate the
return switches. The procedure to install a Value Max Transponder is provided in
Element Management Transponder Installation/Replacement on page 7-10.