User manual

Maintenance
Replacing Low-Speed Cards
10-6 July 2004 Wide Bank 28 DS3 - Release 2.4
Replacing a Standard Low-Speed Card
CAUTION! STANDARD LOW-SPEED CARDS CAN BE REMOVED AND REPLACED WITH
POWER ON. HOWEVER, THE FOUR CIRCUITS ON THE CARD BEING SWAPPED WILL BE
DROPPED UNTIL A CARD IS INSERTED INTO THE SLOT.
1. Use a Phillips head screwdriver to loosen the two fastening screws on the front
faceplate of the Wide Bank and remove the faceplate. See Figure 10-3.
2. Locate the low-speed card you want to remove. See Figure 10-1 for low-speed
card and circuit locations.
3. Pull the card ejector latch to release the card from its internal connector.
4. Carefully slide the card out of the Wide Bank.
5. Ensure that the replacement card is positioned correctly in the guide rails, then
carefully slide the card into the slot.
6. Press the card ejector latch in toward the card until the connector on the card mates with the
matching connector on the backplane.
NOTE: When replacing a fan faceplate, ensure that the fan power connectors are
aligned and seated on the Controller board power connectors.
7. Replace the faceplate and tighten the fastening screws. Do not overtighten. Carrier Access
recommends a maximum torque of 8 to 10 inch-pounds.
Figure 10-3 Replacing a Standard Low-Speed Card
Card Ejector
Latch
Captive Screws