Lucent Technologies Lineage
®
2000 25A Ferroresonant Rectifier J85502A-1
Issue 4 May 1998
Spare Parts and Replacement Procedures 8 - 7
9. Disconnect the J3A connector on the cable from the CM3
digital meter board.
10. Remove the CM2 control board from the six support
standoffs by using a small flat-blade screwdriver to push in
the latches on each standoff.
11. Position the new CM2 control board over the six standoffs.
Verify that each latch snaps and locks in place.
12. Connect J3A to P3A on the new CM2 control board.
13. Connect J1A to P1A on the new CM2 board.
14. If the rectifier is to be restored to service, refer to
“Restoring a Rectifier to Service” in Section 7.
Replacing CM3
Digital Meter
Board
Follow instructions in “Handling Circuit Modules” to minimize
electrostatic discharge when handling circuit modules.
1. Turn the rectifier POWER switch Off.
2. Turn the rectifier (CBA1) DC OUTPUT circuit breaker
Off (down).
3. At the ac service panel supplying power to the rectifier,
remove the input fuses assigned to the rectifier or turn the
circuit breaker Off.
4. At the plant controller, remove the REG fuse associated
with the rectifier.
5. At the rectifier, loosen the locking screws and open the
door.
6. Locate the digital meter board.
Caution
Support the CM3 digital meter board with your hands when
connecting and disconnecting the cables or damage to the
board may result.
Do NOT disconnect cables by pulling the cable.
