Nortel DMS-100 Series Maintenance Manual page 678

13-76 OPM routine maintenance procedures
Rectifier replacement in an NT8X01AA, AB, BA, BB
OPM
(continued)
Rectifier replacement for NT8X01AA, AB, BA, BB in an OPM
At the power control unit
1
2
3
4
5
6
7
8
9
10
11
12
RECTIFIER
Rectifier 0
Rectifier 1
297-8361-550 Standard 04.01 September 2000
Switch the correct rectifier breaker to OFF.
Open the right equipment bay to access the front of the rectifier.
Note: The rectifiers located in the right equipment bay frame are installed
with the rectifier front facing the back cabinet wall. To access the front of
the rectifiers, open the right equipment bay frame.
DANGER
Electrical hazard
When you disconnect the power leads from the binding posts
of the rectifier, power can still be connected. You must apply
tape around the bare copper ends of the power leads.
At the front face of the rectifier, set the ac and dc breakers to OFF.
Remove the ac connections from their termination point at the left of the
rectifier.
Remove the dc connections on the right side of the rectifier.
Disconnect the alarm plug at the right of the rectifier.
Remove the retainer screws and remove the rectifier shelf.
Mount the replacement rectifier and install the retaining screws.
Set rectifier ac and dc breakers to OFF.
Connect the ac and dc supply leads.
Connect the alarm plug.
Make sure the current limiting (CL) DIP switch is set to the setting indicated
in the following table.
SW1
open
open
SW2 SW3
open open
open open