Last Function Memory; Initialization Of The Microprocessor; Using The Sys-550Sd (Dht-550Sd Only) - Denon AVR-550SD Operating Instructions Manual

ENGLISH
17

LAST FUNCTION MEMORY

• This unit is equipped with a last function memory which stores the input and output setting conditions as they
were immediately before the power is switched off.
This function eliminates the need to perform complicated resettings when the power is switched on.
• The unit is also equipped with a back-up memory. This function provides approximately one week of memory
storage when the main unit's power switch is off and with the power cord disconnected.
18

INITIALIZATION OF THE MICROPROCESSOR

When the indication of the display is not normal or when the operation of the unit does not shows the reasonable
result, the initialization of the microprocessor is required by the following procedure.
1
Press the power button to set the standby
mode, then unplug the set's power cord from
the wall power outlet.
2
Hold the following 5CH/6CH STEREO button
and DIRECT/STEREO button after 30 second,
and plug the AC cord into the outlet.
3
Check that the entire display is flashing with an
interval of about 1 second, and release your
fingers from the 2 buttons
microprocessor will be initialized.
NOTES:
• If step 3 does not work, start over from step 1.
• If the microprocessor has been reset, all the button settings are reset to the default values (the values set
upon shipment from the factory).
36
1 2 2
and the
19

USING THE SYS-550SD (DHT-550SD ONLY)

CAUTIONS ON HANDLING
When installing, carefully examine the place and method of installation for safety.
When using a stand, brackets, etc., follow the instructions included with the stand or brackets and check for
safety before installing and using. Denon will accept no responsibility for damages or accidents caused by the
unit falling.
Cautions on Installation – Speaker System (SC-A3L, SC-C3L)
The quality of the sound produced from the
speaker system is affected by the size and type
(Japanese or Western) of the room, as well as by
the method of installation. Consider the points
listed below before installing the speaker system.
2 Note that placing the speaker system on the same
stand or shelf as a record player may result in
howling.
2 If there is a wall, glass door, etc., directly in front of
or behind the speaker system, cover the wall or
door with a thick curtain to prevent resonance and
reflection.
2 The SC-A3L and SC-C3L speaker systems are of
the low-leakage-flux type and can be used near
televisions, but depending on the TV there may be
color blotching on the picture. If this happens, turn
off the TV's power, wait 15 to 30 minutes, then
turn the TV's power back on. The TV's automatic
degaussing circuit should reduce the blotching on
the picture. If blotching persists, move the speaker
further away.
2 The center speaker (SC-C3L) is equipped with anti-
slip pads upon shipment from the factory. If
necessary, however, also apply the included anti-
slip pads (cork, approximately 2 mm thick).
2 When placing the satellite speaker system (SC-A3L)
on a stand, etc., stick the included anti-slip pads
(cork, approximately 2 mm thick) at the four corners
of the bottom surface. (Refer to the illustration
below.)
[ Satellite speaker system (illustration of bottom of SC-A3L) ]
Stick the anti-slip pads (cork, approximately 2 mm
thick) here.
Speaker
stand/speaker
bracket mount
screw holes
Stick the anti-slip pads (cork, approximately 2 mm
thick) here.
2 When mounting the satellite speaker system (SC-
A3L) on a stand or bracket, M5 nuts are inserted
into the bottom of the satellite speaker system
(SC-A3L) at intervals of 60 mm. When mounting,
following the instructions in the manual included
with the speaker stand or ceiling mount bracket,
and be sure to install properly and securely.
2 When the satellite speaker system (SC-A3L) is
mounted on a ceiling mount bracket, it is turned
upside down due to the installation angle. The
Denon mark is also turned upside down, so detach
the speaker net and reattach it in the opposite
direction.
CAUTION:
• To ensure safety, do not place any objects on
top or lean objects against the speaker system.
• The speaker may topple down or fall if force is
applied to the sides. Be particularly careful to
avoid this, as this could cause injury or other
serious accidents.
WARNING:
• When installing the speaker systems on the
ceiling or wall, to ensure safety, have specialists
do the installation work.
• Be sure to fasten the speaker cords to a wall,
etc., to prevent people from tripping over them
or otherwise pulling on them accidentally,
causing the speaker systems to fall.
• Be sure to check for safety after installing the
speaker systems. Afterwards, perform safety
inspections at regular intervals to be sure there
is no danger that the speaker systems will fall.
Denon will accept no responsibility for damages
or accidents caused by inappropriate choice of
the place of installation or improper installation
procedures.