Lucent Technologies MERLIN LEGEND Release 5.0 Installation Manual page 91

MERLIN LEGEND Communications System Release 5.0
Installation 555-650-140
Installing the Control Unit
Replacing a Module
To remove and replace a module, follow the steps below. Refer to
Figure 2-13.
Busy-out or reset the module. (Busy-out is recommended.)

Label all cords (if they are not labeled already) and then unplug

them from the module.
For information about labeling trunk and extension cords, see
''Installing Telephones and
Control Unit to the Network
beled wiring, see "Checking Unlabeled Wiring" in Chapter 3 of the Main-
tenance and Troubleshooting guide.
Run a demand test by entering the test mode.

Power down the system, if required. See

System'', later in this chapter, for instructions.
Remove the module by pushing up firmly on the tab at the bottom

rear of the module.
While holding up the tab, swing the bottom of the module towards

you and away from the carrier.
Lift up the module to disengage it from the rod on the top of the

carrier.
Inspect the module for visible damage.

Insert the new module. See

Restore the module. Refer to

System'', for instructions.
Connect the trunk and extension cords.

Attach a tag, error printout, and any information that will help

identify any visible problems or failure symptoms.
Adjuncts'', and Chapter 4, ''Connecting the
Interface''. For instructions on checking unla-
''Powering Down the
Figure 2-10.
Chapter 7, ''Initializing and Testing the
Issue 1
June 1997
Page 2-42
Chapter 3,