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25.Outdoor Antenna Grounding — If an outside antenna
is connected to the product, be sure the antenna is
grounded so as to provide some protection against
voltage surges and built-up static charges. Section
810 of the National Electrical Code, ANSI / NFPA No.
70—1984, provides information with respect to
proper grounding of the mast and supporting
structure, grounding of the lead-in wire to an antenna
discharge unit, size of grounding conductors, location
of antenna discharge unit, connection to grounding
electrodes, and requirements for the grounding
electrode. See figure 1.
26.Lightning — For added protection of this product
during a lightning storm, or when it is left unattended
and unused for long periods of time, disconnect it
from the wall outlet and disconnect the antenna. This
will prevent damage to the product due to lightning
and power-line surges.
27.Power Lines — An outside antenna system should not
be located in the vicinity of overhead power lines or
other electric light or power circuits, or where it can
fall into such power lines or circuits. When installing
an outside antenna system, extreme care should be
taken to keep from touching such power lines or
circuits as contact with them might be fatal.
28.Overloading — Do not overload wall outlets and
extension cords as this can result in a risk of fire or
electric shock.
29.Objects and Liquid Entry — Never push objects of
any kind into this product through openings as they
may touch dangerous voltage points or short out
parts that could result in a fire or electric shock. Be
careful not to spill liquid of any kind onto the product.
30.Servicing — Do not attempt to service this product
yourself as opening or removing covers may expose
you to dangerous voltage or other hazards. Refer all
servicing to qualified service personnel.
31. Damage Requiring Service — Disconnect this product
from the wall outlet and all power sources including
battery, and refer servicing to qualified service
personnel under the following conditions:
a.When the power-supply cord or plug is damaged.
b.If any liquid has been spilled onto, or objects have
fallen into, the product.
c.If the product has been exposed to rain or water.
d.If the product does not operate normally even if you
follow the operating instructions. Adjust only those
controls that are covered by the operation
instructions. Improper adjustment of other controls
may result in damage and will often require
extensive work by a qualified technician to restore
the product to its normal operation.
e.If the product has been dropped or the cabinet has
been damaged.
f. When the product exhibits a distinct change in
performance. This indicates a need for service.
32.Replacement Parts — When replacement parts are
required, be sure the service technician has used
replacement parts that are specified by Canon or that
have the same characteristics as the original part.
Unauthorized substitutions may result in fire, electric
shock or other hazards.
33.Safety Check — Upon completion of any service or
repairs to this product, ask the service technician to
perform safety checks to determine that the product
is in safe operating order.
34.Heat — The product should be situated away from
heat sources such as radiators, heat registers, stoves,
or other products (including amplifiers) that produce
heat.
Fig.1
ANTENNA LEAD IN WIRE
ELECTRIC SERVICE
EQUIPMENT
GROUND CLAMP
GROUND CLAMPS
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250. PART H)
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
NEC - NATIONAL
ELECTRICAL CODE
ANTENNA DISCHARGE UNIT
(NEC SECTION 810-20)
EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELECTRICAL
CODE
When replacement of power supply is required, please return it to the responsible nearest Canon Service Center and please
replace it with the same type number CA-920.
The Adapter can be used with a power supply between 100 and 240 V AC. Contact your Canon dealer for information about plug
adapter for overseas use.
COPY