14 Installing the Hardware
Installing RPMs and Line Cards
  WARNING: Always wear an ESD-preventive wrist or foot-heel ground strap 
when handling RPMs or line cards. Place RPMs and line cards on an antistatic 
surface when they are not installed. Electrostatic discharge (ESD) damage can 
occur when components are mishandled.
  CAUTION: Unlock the levers before inserting the line card into the chassis. 
Fully engage the locking mechanism after the card has been inserted; not 
doing so might damage the card below it when that lower card is inserted.
  NOTE: The fan tray face panel has slot number markings for the RPMs and line 
cards. Insert the fan tray before the line cards to simplify RPM and line card 
installation.
Step Task
1 Extend the left and right card levers by first pressing gently down on the 
thumb tabs in the ejector levers and then pulling the ejector levers 
simultaneously until they are in the open position.
2 Hold the card assembly by the metal carrier edges. Avoid touching the 
printed circuit board and connector pins.
3 Align the card with the guide, and gently slide it into any line card slot 
until the card is about halfway into the slot.
  NOTE: Use the markings on the fan tray to determine which slots 
are for the RPMs and which are for the line cards.
4 Continue sliding the card until you feel the connectors engage with the 
chassis backplane.
5 Rotate the levers toward the card to seat the backplane connectors and 
line card in place. Push on the knurled section of the levers until the 
thumb tabs pop up and lock the unit in place.
  CAUTION: Installing a card without fully engaging the 
locking mechanism might damage the EMI seal on the card 
below it when that card is inserted.
6 Install a blank panel in all slots that do not have a card, and secure it 
with the screws provided.