Lucent Technologies Lineage
®
2000 25A Ferroresonant Rectifier J85502A-1
Issue 4 May 1998
Spare Parts and Replacement Procedures 8 - 13
Replacing
Components
Disconnect the rectifier as described in “Disconnecting a
Rectifier,” below. Refer to Figures 5-2, 8-1, and 8-2 for
component locations.
The J85502A-1 rectifier is constructed with the main
transformer (T1) on the left using the entire depth of the unit.
The right portion of the unit has front and rear compartments
separated by a center mounting plate.
Output Volts
Adjust
Potentiometer
(R4)
1. Noting their positions for reassembly, unsolder the wires
from the potentiometer (R4).
2. Remove nut to free the potentiometer from its bracket.
DC Output
Circuit Breaker
(CBA1) and
Bracket
1. Disconnect header connector P5 from the CM1 option
board.
2. Remove the two screws that hold the CBA1 bracket to the
rectifier cabinet.
3. Carefully clear wires and cables aside while pulling the
CBA1 bracket out to access its back side.
4. Disconnect the quick-disconnect connectors from the back
of CBA1.
5. Disconnect two dc cables from studs on the back of CBA1.
6. Remove the two screws on the front of CBA1 that secure it
to its bracket, and remove CBA1.
Snubber Board
(CA1)
1. Remove the CBA1 bracket as described in “DC Circuit
Breaker (CBA1) and Bracket.”
DANGER
The following disassembly or reinstallation procedures
MUST be performed only on a rectifier completely
disconnected from the plant battery buses, AND with no input
from the ac service panel connected to the rectifier. The plant
control cable J2A should also be disconnected from the CM2
board.
