5
Cleaning may be performed with a slightly
damp cloth that has been wrung until nearly
dry. Refer to the section on
Cleaning
on
page
24.
WARNING: To reduce the risk
of fire or electric shock, do not
expose this equipment to rain
or moisture.
Do not allow liquids to enter
the unit or contact electrical
terminals.
Service warnings
All compartments are sealed at the factory. If
the seals are broken, the warranty will be void
and all service costs will be charged to the
owner.
DANGER: Contains no user
serviceable parts. Do not
attempt to open any of the
dm78/88 compartments as
this may expose you to
dangerous voltages and will
void the warranty.
Requires F 10
A L 250
V fuse for continued
protection against the risk of fire. Never
bypass or use any other type of fuse. The fuse
is located on the bottom of the lower panel of
the power amplifier (13).
WARNING: Always replace the
fuse with the same type and
rating as specified: F 10
A L
250 V.
DANGER: Always disconnect
the unit from the mains before
touching the loudspeaker
terminals or replacing the fuse.
Protection from overheating
The dm78/88 generates a certain amount of
heat and requires ventilation. Slots and
ventilation holes are provided for ventilation
purposes, and to ensure reliable operation of
the product. To prevent fire hazards, these
openings must never be blocked or covered.
Follow the precautions listed below. If these
precautions are not followed, overheating or
failure may result. Overheating also shortens
the working life of all components.
•
do not block the ventilation slots in the
sides of the unit with any object, including
paper, cloths or curtains
•
avoid placing the unit in a built-in
installation place such as a bookcase or a
rack unless you can provide proper
ventilation
•
do not operate the unit inside a cabinet
unless it has adequate ventilation (such as
an open back panel)
•
allow at least 12 in (300
mm) clearance
around the unit
WARNING: Do not obstruct
ventilation slots in the chassis.
