Canon DC420 - Manual (Page 4)

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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
Overloading — Do not overload wall outlets and
extension cords as this can result in a risk of fire
or electric shock.
28
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.
29
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.
30
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.
31
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.
32
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.
33
Heat — The product should be situated away
from heat sources such as radiators, heat
registers, stoves, or other products (including
amplifiers) that produce heat.
EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL
ELECTRICAL CODE
ANTENNA LEAD
IN WIRE
ANTENNA DISCHARGE UNIT (NEC
SECTION 810-20)
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
GROUND CLAMPS
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250. PART H)
NEC - NATIONAL ELECTRICAL
CODE
ELECTRIC
SERVICE
EQUIPMENT
GROUND CLAMP
Fig. 1
When replacement of the power supply is required, please return it to the responsible nearest Canon Service Center
and please replace it with the same type number CA-570.
The Adapter can be used with a power supply between 100 and 240 V AC. For areas where 120 V AC power is not
used, you will need a special plug adapter. Contact your nearest Canon Service Center for further information.
This Class B digital apparatus complies with Canadian ICES-003.