2
—
Operating and Maintaining the UMAP 2110
2.4 Replacing Units
This section provides procedures on how to:
replace the fan card (replace as required)
replace the air filter (replace every three months)
Air Filter
FAN Card
Procedure 2-1 Replace the Fan Card
Danger —
When removing the fan card, wait for a moment for the fan blades to come to a
complete stop before fully extracting the fan card.
1
Put on the antistatic wrist strap and connect it to a grounding point.
2
Slide the power switch of the DSLAM to the OFF position.
3
Remove the fan card to be replaced by doing the following steps:
a
Turn the two screws on the faceplate of the fan card counterclockwise until they loosen the
connection of the fan card to the DSLAM.
b
Pull the fan card out about 2 inches and wait for a moment for the fan blades to stop
completely.
c
Pull the fan card completely out of the DSLAM, and set it aside.
4
Install the replacement fan card into the DSLAM by doing he following steps:
a
Slide the replacement fan card into the fan card slot of the DSLAM.
b
Turn the two screws on the faceplate of the fan card clockwise until they secure the fan card
in place.
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