Nortel DMS-100 Series Maintenance Manual page 464

12-116 Star Remote System card replacement procedures
NTTR60
in a STAR
(continued)
At the FSP
9
10
At the STAR
11
12
13
297-8353-550 Standard 05.01 March 2001
where
unit_no
is the STAR unit (0 or 1) as seen in step 5
Turn OFF the circuit breaker for the ringing generator to be replaced by using
the information in the following table.
IfCircuit breaker label
Ring 0
Ring 1
WARNING
Static electricity damage
Before removing any cards, put on a wrist strap and connect
it to the wrist strap grounding point on the left side of the
frame supervisory panel (FSP) of the STAR. This protects the
equipment against damage caused by static electricity.
WARNING
Equipment damage
Take these precautions when removing or inserting a card.1.
Do not apply direct pressure to the components.2. Do not
force the cards into the slots.
Put on a wrist strap.
Remove the NTTR60 card as follows:
a Locate the card to be removed on the appropriate shelf.
b Open the locking levers on the card to be replaced and gently pull the
card towards you until it clears the shelf.
c Place the card you have removed in an electrostatic discharge (ESD)
protective container.
d Ensure the replacement card has the same product equipment code
(PEC), including suffix, as the card you just removed.
Open the locking levers on the replacement card. Align the card with the slots
in the shelf and gently slide the card into the shelf.
Seat and lock the card.
DoRinging generator
0 in slot 1
1 in slot 22