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controls that are covered by the
operating instructions. Improper
adjustment may require extensive
work by a qualified technician to
restore the telephone to normal
operation.
E. If the telephone has been dropped
or the case has been damaged.
F. If the telephone exhibits a distinct
change in performance.
15. Never install telephone wiring during
a lightning storm.
16. Never install telephone jacks in wet
locations unless the jack is specifically
designed for wet locations.
17. Never touch uninsulated telephone
wires or terminals unless the telephone
line has been disconnected at the
network interface.