TB8100 Installation and Operation Manual Replacing Modules 93
© Tait Electronics Limited June 2005
Refitting
1. Slide the replacement PA into the subrack and secure it with the
retaining clamp(s).
2. Reconnect all the front and rear panel cables previously disconnected.
Ensure the front panel cables are retained by the cable retaining clips
in the top of the subrack.
Note If you need to remove any front panel cables, simply pull the front
of the cable retaining clip down and then slide it out from the sub-
rack until it reaches the end of its travel.
3. Tighten the nut on the SMA connector to a torque of 0.9Nm
(8lbf·in).
4. If necessary, refit the control panel, as described in “Replacing the
Control Panel” on page 89.
5. Carry out the instructions in “Final Reassembly” on page 101.
6.6 Replacing the Power Management Unit
Important You must disconnect the AC and DC power cables before
removing the PMU from the subrack.
Removal 1. If you have not already done so, carry
out the instructions in “Preliminary
Disassembly” on page 88.
2. At the front of the PMU, unplug the
output power cable(s)
b and system
control bus
c, and move them to
one side.
3. Loosen the screw securing the
retaining clamps
d and rotate the
clamps through 90° to clear the
module.
4. Slide the PMU out of the subrack,
taking care not to damage any of the
cables.
Refitting 1. Slide the replacement PMU into the subrack and secure it with the
retaining clamps.
2. Reconnect all the front and rear panel cables previously disconnected.
Connect the DC power cables on the rear panel as shown in
Figure 5.7 on page 85. Ensure the front panel cables are retained by
the cable retaining clips in the top of the subrack.
dbcd
(obscured)
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