Lucent Technologies Lineage
®
2000 125A Ferroresonant Rectifier J85502C-1
8 - 22 Spare Parts and Replacement Procedures
Issue 8 July 1999
moving the assembly to the right and then forward (away
from the cabinet rear wall), and then lifting the assembly
vertically out of the cabinet.
12. Actual T1 Removal for 24-Volt or 48-Volt Rectifiers:
a. Attach two eyebolts (3/8-16 x 1-1/4) to diagonally
opposite slots at the top of the transformer brackets
using two flat washers, one lockwasher, and one nut
for each eyebolt.
b. With chain sling and two hooks for attachment to the
eyebolts, use lifting equipment (of at least 500 lbs.
capacity) to first raise the transformer slightly above
the bottom surface of the cabinet. Then, slide the
transformer to the right until the left side of it is clear
of the flange at the top of the cabinet. Now the
transformer can be lifted out of the cabinet.
Rectifier Diode
Test and/or
Replacement
If not already done, perform the diode heat sink assembly
procedure.
1. Remove the nut from the stud that replace secures the
diode to the heat sink. The stud can be anode or cathode of
diode, see the rectifier SD to determine. Lift the diode
body from the heat sink by the “pigtail” side, opposite of
stud side, and save the removed thermal pad for
reinstallation.
2. The diode is now electrically isolated for test purposes.
3. If this procedure is being performed to test a diode, skip to
Step 8. To replace a diode that is known to be defective,
continue with Step 4.
4. Refer to the next section to remove any heat shrink tubing
and tape on the pigtail connection.
Note
It is not necessary to remove the CBA1 bracket assembly or
the dc filter assembly in order to remove the ac bracket
assembly (provided the top cover is removed and there is space
above the top of the cabinet.
