Avaya Definity SI Maintenance Manual page 1155

CARR-POW (Carrier Port Power Unit) for AC-Powered
Systems
4. Before installing the replacement power unit in the carrier, turn the power
unit on its side and operate rocker switches 1 through 4 on the dip switch
as follows:
Switch
1
2
3
4
5. Move the locking slide on the replacement power unit to the extreme left
position and open the locking lever.
6. Insert the power unit into the carrier until some resistance is felt.
7. Lift the locking lever upward until it latches.
8. Move the locking lever slide on the power unit to the extreme right position.
9. Connect the power cord and set the power switch to ON.
Replacing a 631DA or 631DB AC Power Unit
If the power unit to be replaced is in a control carrier of a PPN system, refer to
"Removing Power" and "Restoring Power" in Chapter 5, "Routine Maintenance
Procedures" before replacing the power unit. To replace the power unit, follow the
procedure below:
1. Unplug the power cord.
2. Move the locking slide on the power unit to the extreme left position and
unlatch the locking lever.
3. Remove the power unit from the carrier.
4. Move the locking slide on the replacement power unit to the extreme left
position and open the locking lever.
5. Insert the power unit into the carrier until some resistance is felt.
6. Lift the locking lever upward until it latches.
7. Move the locking lever slide on the power unit to the extreme right position.
8. Connect the power cord and set the power switch to ON.
555-233-123
631AR Position
open
closed
open
closed
NOTE:
In the open position, the rocker is down on the side opposite the
number. In the closed position, the rocker is down on the side
adjacent to the number.
631BR Position
open
closed
open
open
Issue 4 May 2002 10-369