Nortel DMS-100 Series Maintenance Manual page 350

8-10 OPM card replacement procedures
NT0X91AA
in an OPM
(continued)
8
At the OPM cabinet
9
10
11
12
13
14
15
16
17
18
19
20
21
297-8361-550 Standard 04.01 September 2000
CAUTION
Loss of service
This procedure contains directions to busy one unit of a
peripheral module (PM) in a frame. Since busying a unit of a
PM affects redundancy, replace alarm and control cards only
during periods of low traffic.
Busy LCM unit 1 by typing
>BSY UNIT 1
and pressing the Enter key.
Put on a wrist strap.
Set CB4 as recorded in step 4 to the OFF position.
Unscrew the slotted nut located on the left-hand side of the FSP.
DANGER
Risk of electrocution
Some of the terminals inside the frame supervisory panel
(FSP) have an electrical potential of -48 V dc. Remove all
jewelry before replacing a card in the FSP. Do not touch any
terminals in the FSP.
Open the FSP panel.
Remove the NT0X91AA card from the slot identified in step 2.
Insert the replacement card.
Close the FSP panel.
Tighten the slotted nut on the FSP.
Set CB4 as recorded in step 4 to the ON position.
Proceed as follows to reset the converters in the host interface equipment
shelf (HIE).
Press and hold the RESET button on the converter while setting the
associated CB, identified in step 3, to the ON position.
Release the RESET button.
Remove the wrist strap.