Lucent Technologies Lineage
®
2000 125A Ferroresonant Rectifier J85502C-1
8 - 8 Spare Parts and Replacement Procedures
Issue 8 July 1999
13. If the CM6 AC Monitor card is not used, connect J1A to
P1A on the new CM2 board. If CM6 is used, replace it
with the ribbon cable to CM1. Attach and reconnect the Y,
R, and S leads of CM6 onto points E2, E4, and E9,
respectively. The BK and W leads of CM6, if present, are
not to be reconnected.
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” in this
section 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 fuse assigned to the rectifier or turn the
circuit breaker Off.
4. At the plant controller, remove the fuse REG fuse
associated with the rectifier.
5. At the rectifier, loosen the locking screws and open the
door.
6. Locate the CM3 digital meter board.
7. Remove the CM3 meter board from the two support
standoffs and S3 switch bezel by using a small flat-bladed
screwdriver to unlatch the bezel clips from the switch and
push in the latches on each standoff.
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.
