Kenwood HM-381MD - Manual (Page 5)

Preparation section
HM-381MD (En)
5
13.Lightning – For added protection for this appliance during
a lightning storm, or when it is left unattended and unused
for long periods of time, unplug it from the wall outlet and
disconnect the antenna or cable system. This will prevent
damage to the appliance due to lightning and power-line
surges.
14.Abnormal smell – If an abnormal smell or smoke is
detected, immediately turn the power OFF and unplug
the appliance from the wall outlet. Contact your dealer or
nearest service center.
15.Damage requiring service – The appliance should
be serviced by qualified service personnel when:
A. The power-supply cord or the plug has been
damaged.
B. Objects have fallen, or liquid has been spilled into
the appliance.
C. The appliance has been exposed to rain or water.
D. The appliance does not appear to operate normally
by following the instruction manual. Adjust only those
controls that are covered by the instruction manual as an
improper adjustment of other controls may result in damage
and will often require extensive work by a qualified
technician to restore the appliance to its normal operation.
E. The appliance has been dropped, or the enclosure
damaged.
F. The appliance exhibits a marked change in performance.
16.Servicing – The user should not attempt to service
the appliance beyond that described in the instruction
manual. All other servicing should be referred to
qualified service personnel.
17.Outdoor antenna grounding – If an outside antenna
is connected to the appliance, be sure the antenna
system is grounded so as to provide some protection
against voltage surges and built up static charges.
Article 810 of the National Electrical Code ANSI/
NFPA 70, 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.
18.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.
19.AC outlets – Do not connect other audio equipment
with a power consumption larger than that specified
to the AC outlet on the rear panel. Never connect
other electrical appliances, such as an iron or toaster,
to it to prevent fire or electric shock.
20. Overloading – Do not overload wall outlets, extension
cords, or integral convenience receptacles as this can
result in a risk of fire or electric shock.
21. Attachment – Do not use attachments not recommended
by the appliance manufacturer as they may cause hazards.
22. Replacement parts – When replacement parts are required,
be sure the service technician has used replacement parts
specified by the manufacturer or have the same
characteristics as the original parts. Unauthorized
substitutions may result in fire, electric shock, or other
hazards.
23. Safety check – Upon completion of any service or repairs
to this appliance, ask the service technician to perform
safety checks to determine that the appliance is in proper
operating condition.
Notes:
1. Item 3 is not required except for grounded or polarized equipment.
2. Item 17 and 18 are not required except for units provided with
antenna terminals.
3. Item 17 complies with UL in the U.S.A.
EXAMPLE OF ANTENNA GROUNDING AS PER
NATIONAL ELECTRICAL CODE
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)
NEC – NATIONAL ELECTRICAL CODE
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
ANTENNA
LEAD IN WIRE
ANTENNA
DISCHARGE UNIT
(NEC SECTION 810-20)
GROUND CLAMP
ELECTRIC
SERVICE
EQUIPMENT
GROUND
CLAMPS
Caution : Read this page carefully to ensure safe operation. IMPORTANT SAFEGUARDS