3com NETBuilder II 用户手册
2-2
Troubleshooting and Maintenance
Maintaining the HSSI Module
Replacing the HSSI Module
If any component in the HSSI module fails, you will need to replace the entire module. The
HSSI module can be hot-swapped, which means that you can safely remove and install a new
one without turning off or rebooting the NETBuilder base system. To perform the following
procedure, you may need a small flathead screwdriver.
HSSI module can be hot-swapped, which means that you can safely remove and install a new
one without turning off or rebooting the NETBuilder base system. To perform the following
procedure, you may need a small flathead screwdriver.
To replace the module, follow these steps to remove the HSSI module:
1.
Disconnect any network cabling from the HSSI module, and remove the cable from
the strain relief bracket.
the strain relief bracket.
You do not need to remove the bracket.
2.
Unscrew the two captive screws that anchor the board in the slot until they disengage
from the chassis. Do not remove the screws from the I/O panel.
from the chassis. Do not remove the screws from the I/O panel.
Use a screwdriver to loosen the screws, if necessary.
NOTE:
If you have a dual-wide NETBuilder II chassis, skip step 3.
3.
Release the ejector handles on both sides of the board by pushing the handles apart.
The board will disengage from the NETBuilder II backplane and partially eject from the
slot.
slot.
4.
For the dual-wide NETBuilder II chassis, use one hand to disengage the flipper
ejector by pulling it back, and simultaneously use the other hand to pull on the
anchoring screw on the opposite side of the I/O panel.
ejector by pulling it back, and simultaneously use the other hand to pull on the
anchoring screw on the opposite side of the I/O panel.
5.
Use both hands to grasp the board and gently pull it from the slot.
6.
Install the new HSSI module using the procedures outlined in Chapter 1,
“Installation.”
“Installation.”