Lucent Technologies Lineage
®
2000 125A Ferroresonant Rectifier J85502C-1
8 - 6 Spare Parts and Replacement Procedures
Issue 8 July 1999
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
rectifier door.
6. Locate the CM1 option board. Using a drawing of the
option board like that in Figure 6-2, record where each
cable connects to the board.
7. Remove all cables from CM1 by unlatching first, then
pulling the cable connector.
8. Remove all cables from CM1 by unlatching first, then
pulling the cable connector.
9. Remove CM1 from its four support standoffs by using a
small flat-bladed screwdriver to push in the latches on each
standoff.
10. Verify that the new option board has the correct straps and
resistors in place. If not, modify the board according to
“Modifying the CM1 Option Board” in this section.
11. Position the new CM1 board over the four support
standoffs. Verify that each latch snaps and locks in place.
12. Reconnect all cables that were disconnected in Step 8.
13. If the rectifier is to be restored to service, refer to
“Restoring a Rectifier to Service” in Section 7.
Replacing CM2
Control 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.
Caution
Support the CM1 option 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.
