Avaya Definity SI Maintenance Manual page 119

Troubleshooting power units
Replacing a 631DA or 631DB AC power unit
To replace the power unit use the following procedures and
POWER
CORD
OUTLET
Figure 5-2. 631DA or 631DB AC Power Unit
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
Figure 5-2.
STATUS
LEDS
RED
AMBER
LOCKING
LEVER
LOCKING
SLIDE
Issue 4 May 2002 5-15