AT&T 6300 Service Manual page 190

INSTALLATIONS
Before turning the Power Switch ON, refer to Chapter
4
and
review the section "Resident Diagnostics." After a good
understanding of the Resident Diagnostics has been obtained, refer
to the section "Applying Power to System." If the Resident
Diagnostics pass, run the Customer Test Diagnostics in the
Automatic Mode to fully test the operation of the system. If the
system does not pass Resident Diagnostics, refer to Chapter 5 for
troubleshooting information.
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