Lucent Technologies MERLIN LEGEND Release 5.0 Maintenance And Troubleshooting Manual page 101

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting 555-650-140
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
b. Replace the ferrite cores around the AC power cord and ground
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.
basic carrier and then swinging it down into place. Push the lower
end firmly until the locking tab clicks.
wire and slide the ferrite cores between the wire manager and the
power supply module.
Issue 1
June 1997
Page 4-11
Figure