Lucent Technologies MERLIN LEGEND Release 6.0 Maintenance And Troubleshooting Manual page 105

MERLIN LEGEND Communications System Release 6.0
Maintenance and Troubleshooting 555-660-140
Control Unit Problems
Power Supply Problems
To replace the power supply module, follow the steps below and refer to
4–3.
Insert a new power supply.
! 
a Reinstall the power supply module by hooking the top into the
basic carrier and then swinging it down into place. Push the lower
end firmly until the locking tab clicks.
b Replace the ferrite cores around the AC power cord and ground
wire and slide the ferrite cores between the wire manager and the
power supply module.
c Attach the ground wire to the grounding screw.
For each power supply and auxiliary power unit, connect the AC
! 
power cord to the connector marked AC INPUT on the power
supply.
Plug the other end of each AC power cord into the AC outlet.
! 
Power up the system by turning on the components listed below in
! 
the order given.
a Power supply on each expansion carrier
b Power supply on the basic carrier
The system automatically cold starts.
!
CAUTION:
Do not plug the power supply or the auxiliary power unit into the AC outlet
until you are ready to turn on the system, as described in "Powering Up the
System" in Chapter 2 of Installation.
Do not attach the power cord(s) to any building surfaces.
Issue 1
February 1998
Page 4-11
Figure