Lucent Technologies Galaxy Power System 4848/100
11 - 4  Maintenance and Replacement   Issue 5  June 2000
Replacement Procedures, continued
!
Installing or Replacing a Rectifier, continued
Step Action
3
Turn ac circuit breaker OFF.
4
Place rectifier power switch in STBY.
5
Install the rectifier. See Figure 11-1.
a. Verify that the output circuit breaker is OFF and that 
the rectifier power switch is in the “Standby” position.
b.Slide the unit slowly onto the shelf until it contacts the rear 
connector.
Note: Install rectifiers, starting at the bottom position and 
working upward.
c. Remove the label over the locking screw access window. 
Using a 5mm (3/16") Allen-head “T” wrench, turn the 
locking screw clockwise to secure the rectifier to the shelf.
Caution
Verify that the rectifier chassis slides rearward evenly on 
the left and right sides as the locking screw is turned. DO 
NOT USE EXCESSIVE FORCE DURING THIS 
PROCEDURE! If the rectifier-to-shelf mating process 
appears to bind, back the unit out and start over. Avoid 
stripping the threads of the locking screw by stopping 
when the rearward progress of the rectifier ceases.
Figure 11-1: Installing a Rectifier in a Rectifier Shelf
Continued on next page.
Rectifier Shelf
in Cabinet
Rectifier
Insertion Tool