Multi-Tech Systems Hub - Manual (Page 24)

24 CommPlete 4000 Communications Server User Guide
Chapter 4 - Hardware removal/ Replacement
Power Supply Removal/Replacement
The card cage has to be removed in order to disconnect the power wiring before the power supply
can be removed.
1
Remove the CommPlete 4000 from rack enclosure (two people are needed). Follow the
procedure “Disconnecting Cables and Removal from Enclosure” presented above. Summary:
after powering down the unit and disconnecting all power and signal cables, employ two persons
to remove its rack-mounting screws and lift the unit out of the rack.
2 Remove the top cover from the CommPlete 4000 by removing the seven cover mounting
screws located in the back of the CommPlete 4000. See figure 4-3.
3 Remove the two chassis mounting screws from the card cage. See figure 4-4.
4 Partially remove the card cage and remove power cabling at midplane.
5 Remove the power connection from the fanned heatsinkon the SBC (Figure 4-6).
6 Remove power cables from the back of hard drive, floppy drive, and CD ROM drive.
7 Remove the screw that holds the ground wire by the power switch.
8 Dis connect wires going to the power switch. Take note of which color wire is attached to which
connector on the switch.
9 Remove the three power supply mounting screws from the back of the CommPlete 4000.
10 Remove the power supply from the chassis.
11 To install a new power supply, follow steps 1-7 in reverse order and sense.
a. Position the power supply into its place in the chassis.
b. Attach power supply to chassis rear (3 screws).
c. Re-attach power cables to hard-drive, floppy-drive, and CDROM drive.
d. Re-attach power cabling at midplane. The ISI cards and NIC may need to be removed
to attach cables.
e. Position card cage in its place in the chassis.
f. Attach card cage to chassis (2 screws).
g. Re-attach power switch wires and ground wires.
h. Replace top cover (7 screws).