110 Replacing Modules TB9100/P25 CG/P25 TAG Installation and Operation Manual
© Tait Limited March 2014
7.9 Replacing the Subrack Interconnect Board
Notice Be careful when removing module retaining clamps and screws
in a live system. Dropping any metal items onto the subrack interconnect
board can cause shorts which may damage the equipment.
Notice The DC output connector on the subrack interconnect board
for reciter 2 is located in front of reciter 3. You will need to disconnect
reciter 2’s power cable from the subrack board before removing reciter 3.
Removal 1. If you have not already done so, carry out the instructions in “Pre-
liminary Disassembly” on page 96, and remove the control panel, as
described in “Replacing the Control Panel” on page 98.
2. Disconnect any system control bus cables and DC power cables from
the interconnect board.
3. Remove the M3 nuts and spring washers
b securing the right end of
the board to the subrack.
4. Remove the two retaining clamps
c securing the left end of the
board.
5. Remove the board.
Refitting 1. If previously removed, replace the insulator d.
2. Reconnect the DC feed wires to connector J17
e on the
interconnect board (red to + and black to -).
3. Refit the board and secure with the M3 nuts and spring washers.
Replace the two retaining clamps.
4. Set the switches and links as described in “Configuring the Subrack
Interconnect Board” on page 112.
5. Reconnect the system control bus cables and reciter DC cables as
shown in “Appendix B – Inter-Module Connections” on page 141.
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