Network Card User Manual

Preparing for Installation 2-9
Removing Dial Shelf Cards and Dial Shelf Controller Cards
Removing Dial Shelf Cards and Dial Shelf Controller Cards
To remove the dial shelf cards and dial shelf controller cards, follow these steps:
Caution Trunk cards and modem cards weigh 8 lb (3.3 kg) each. Dial shelf controller cards weigh
8.5 lb (3.8 kg) each. Use two hands when removing or replacing cards in the dial shelf.
Step 1 Record the original position of each card before you remove the cards from the dial shelf
slots. Refer to this information when you reinstall the cards.
Step 2 Attach an ESD-preventive wrist strap between you and an unpainted chassis surface.
Caution To prevent ESD damage, handle trunk cards by ejector levers and carrier edges only, and
use an ESD-preventive wrist strap or other grounding device.
Step 3 Using a No. 2 Phillips screwdriver, loosen the panel fasteners at the top and bottom of the
card front panel.
Step 4 Pull either the upper or lower ejector lever away from the card front panel to disengage
the card from the backplane connector. (See Figure 2-5
.)
Caution Always use the ejector levers when disengaging or seating trunk cards, modem cards, or
dial shelf controller cards in the dial shelf backplane. Failure to do so can cause erroneous system
error messages indicating a card failure. However, do not use the ejector levers to lift or support the
weight of the cards.
Figure 2-5 Using the Ejector Levers
Step 5
Grasp the ejector levers and pull the card partially out of the dial shelf slot until you can
grasp the card front panel with one hand. Place your other hand under the card to balance
the weight of the card as you pull it out of the slot. (See Figure 2-6.)
PWR
E1FR
HCPU
MAINT
T1FR
FCPU
RALM
LALM
MONITOR#
NLOOP
75
PWR
E1FR
HCPU
MAINT
T1FR
FCPU
RALM
LALM
0
MONITOR#
NLOOP
75
PWR
HCPU
CALLS
MAINT
MODEMS
H11097
PWR
E1FR
HCPU
MAINT
T1FR
FCPU
PWR
E1FR
HCPU
MAINT
T1FR
FCPU
Panel fastener