Chapter 8 Hardware
Maintenance
Warning:
When installing or replacing the power module when the power is on, do not touch any naked
wire, terminal or any part of the product with a dangerous voltage label. Always wear the anti-static wrist strap when
replacing the module.
8.1. Replacing a Power Module
To replace a power module, you need:
An anti-static wrist strap
A screwdriver
Use the following steps to replace a power module:
1.
Put on the anti-static wrist strap
2.
Loosen the captive screw in the module to be replaced, using the screwdriver.
3.
Support the module you are removing with one hand and gently pull the handle with the other hand until it
slides out of the slot.
4.
If you are not going to install another module in this position, install a blank filler plate on the chassis for
dust-proofing and heat dissipation.
5.
Remove the new power module from the package and check the input mode.
6.
Support the module in one hand and hold the handle with another hand. Align the module with the guides
in the chassis and slide the module gently into the slot. Ensure the module matches well with the guides.
Caution:
As you are inserting the power module, if the pin terminal springs up, the pin cannot be seated
into the hole and the system will sound an alarm. If the power module has not been inserted properly, you
should slide it out and insert it again to avoid breaking or cracking the power terminals.
7.
Fasten the captive screw.
Caution:
If the captive screws cannot be fastened, the power module may not have been properly seated.
Check them carefully.
The dust-proof cover on the power module can accumulate dust after a long time of usage. To guarantee heat
dissipation for the chassis, periodically clean the filter with fresh water and air-dry it.
8.2. Replacing Cards
The FABRIC and I/O modules of the Switch 7700 can be installed and removed basically in the same way. This
section describes the general measures of installing and removing these modules.
51
