Procedure; Replacing The Nt4K61Ba Talk Battery Filter Card - Nortel SONET AccessNode User Manual

6-4 Replacing modules in a BIP

Procedure 6-2

Replacing the NT4K61BA Talk battery filter card

Use this procedure to replace the NT4K61BA talk battery filter card in the
NT4K14BA breaker interface panel (BIP).
Action
Step
1
2
3
AccessNode P0904244 Issue 1.0
Action
Remove the BIP cover as shown in Chapter 3, "Removing covers and grilles."
Loosen the hold-down screw on the faceplate of the talk battery filter card.
DANGER
Risk of electric shock
To avoid possible shock hazard when removing the talk
battery filter card, handle the card only by the faceplate.
Risk of electrical shock is no longer present after 10
seconds, at which time the internal capacitor has fully
discharged.
CAUTION
Risk of equipment damage
Do not place the talk battery filter card on a conductive
surface, as it contains a large capacitor that can
discharge. Place the card on a nonconductive surface for
30 seconds until the capacitor has had a chance to fully
discharge internally.
Do not reinsert the same card until it has had a chance to
fully discharge, which takes approximately 30 seconds.
Hold the talk battery filter card by its faceplate and carefully remove the card
from the BIP, as shown in Figure 6-2.
—continued—