3
d.
When the product does not operate normally under normal
operating conditions. Adjust only those controls that are covered
by the operating instructions in this manual; improper adjustment
of other controls may result in damage to the unit and may often
require extensive work by a qualified technician to restore the unit
to normal operation;
e.
When the product has been dropped or the cabinet has been
damaged;
f.
When the product exhibits a distinct change in performance,
indicating a need for service.