3Com NETBuilder II, Инструкция по установке, Страница: 26 / 82

1-16 C
HAPTER
1: NETB
UILDER
II 4-S
LOT
B
RIDGE
/R
OUTER
6 Disconnect the display board ribbon cable and floppy disk drive ribbon cable
from connectors on top of the backplane. Press down on the handles on the
cable connectors to release the cables.
Figure 1-17 Disconnecting Cables from the Backplane in the 4-Slot Chassis
7 Remove the backplane.
a Using the short Phillips screwdriver, remove the eight screws from the
backplane.
b Pull the backplane away from the card cage (toward the front of the chassis)
and disconnect the power supply cable from the backplane connectors.
8 Install the new backplane.
a Reconnect the power supply cable to the backplane connectors.
Route the cable through the rectangular opening in the card cage bracket.
b Seat the backplane against the card cage.
c Reinstall the eight screws that secure the backplane to the card cage.
9 Reconnect the display board cable and floppy disk drive cable.
10 Reinstall the cover.
a Position the cover slightly behind the front of the chassis.
b Lower the cover and slide it toward the front of the chassis so that it
engages the front panel.
c Secure the cover with the screws you removed earlier from the back and
sides of the chassis.
11 Reinstall the main processor module and I/O modules into the chassis.
12 Reinstall the cable strain-relief bracket, if necessary.
13 If your system was previously mounted in a rack, reinstall the rack-mount
brackets on the chassis and remount the system.
14 Make sure the power switch is off (O is pressed down). Plug the power cord
into the power supply and outlet.
15 Turn on the system.
Disconnect floppy disk
drive ribbon cable from
backplane.
Disconnect
display board
ribbon cable.
Rear panel
Front panel
a
b
Backplane