Tait TB9100, Инструкция по установке и эксплуатации

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TB9100 Installation and Operation Manual Replacing Modules 81
© Tait Electronics Limited May 2006
4. Reconnect all the other 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
subrack until it reaches the end of its travel.
5. Tighten the nut on the SMA connector to a torque of 8lbf·in
(0.9N·m).
6. If necessary, refit the control panel, as described in “Replacing the
Control Panel” on page 77 .
7. Carry out the instructions in “Final Reassembly” on page 88 .
7.6 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 75 .
2. At the front of the PMU, unplug the
output power cable(s)
b
and system
control bus loom
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 4.7 on page 51 . Ensure the front panel cables are retained by
the cable retaining clips in the top of the subrack.
d b c d
(obscured)