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Now that you have installed your system components, you are ready
to begin enjoying your new audio system.
Turning On the HK 3490
After you plug the power cord into an AC outlet and turn on the Main Power
Switch on the rear panel, the Power Indicator should light up in amber. This
indicates that the HK 3490 is in Standby mode and is ready to be turned
on. See Figure 26.
The HK 3490 may be turned on by pressing the Power Switch or any
Source Selector on the front panel or the remote. See Figures 26 and 27.
The Power Indicator will turn white to indicate that the HK 3490 is on.
If the PROTECT message appears in the Message Display, unplug the
receiver from AC power and check all of your wires and connections.
Make sure no speaker wires are shorting out by touching each other,
and that there are no breaks in the insulation covering any of the speaker
wires, interconnects or the power cord. If the PROTECT message still
appears when you plug in the HK 3490 and try to turn it on again,
bring the receiver to an authorized Harman Kardon service center for
assistance.
To turn the receiver off, press the Power Switch on the front panel,
or press the Power Off Button on the remote. When the HK 3490 is
left unplugged, any settings you have programmed, including system
configuration and preset radio stations, will be preserved indefinitely.
Volume Control
The volume may be adjusted either by turning the knob on the front
panel (clockwise to increase volume or counterclockwise to decrease
volume), or by pressing the Volume Control Buttons on the remote. See
Figure 28. The volume is displayed as a negative number of decibels
(dB) below the 0dB reference point. Unlike some volume controls on
other products, 0dB is the maximum volume for the HK 3490. Although
it’s physically possible to turn the volume to a higher level, doing so may
damage your hearing and your speakers. For certain more-dynamic
audio materials, even 0dB may be too high, allowing for damage to
equipment.
Figure 28 – Volume Controls
The HK 3490 is designed to reproduce audio with a minimum amount
of distortion. This clarity may lead you to believe that your hearing and
the equipment can handle higher volumes. We urge caution with regard
to volume levels.
Mute Function
To temporarily mute all speakers and the headphones, press the Mute
Button on the front panel or remote. See Figure 29. Any recording in
progress will not be affected. If the Subwoofer Trigger Outputs are
in use and the Subwoofer Link Switch is on, muting will turn off the
subwoofer’s amplifier to conserve energy. The MUTE message will flash
in the display as a reminder. To restore normal audio, either press the
Mute Button again, or adjust the volume. Turning off the HK 3490 will
also end muting.
Figure 29 – Mute Buttons
Sleep Timer
You may program the HK 3490 to play for up to 90 minutes and then
turn off automatically using the sleep timer.
Press the Sleep Button on the front panel or remote, and the time until
turn-off will be displayed. Each additional press of the Sleep Button will
reduce the time until turn-off by 10 minutes, until the OFF setting is
reached, which disables the sleep timer. See Figures 30 and 31.
Figure 30 – Front-Panel Sleep Button Figure 31 – Remote Control Sleep Button
When the sleep timer has been set, the front-panel display will
automatically dim to half-brightness. If you press any button on the
remote or front panel, the display will return to full-brightness. The
display will dim again several seconds after your last command.
If you press the Sleep Button after the timer has been set, the remaining
time until turn-off will be displayed. You may press the Sleep Button to
change the time until turn-off. Pressing and holding the Sleep Button will
disable the sleep timer, and the SLEEP OFF message will appear.
Tone Controls
You may boost or cut either the treble or the bass frequencies by up
to 10dB.
The Bass and Treble Tone Controls may be adjusted using the knobs on
the front panel. Remove the front-panel covers if necessary, then gently
press the desired control knob until it unlatches and pops out. Turn the
appropriate knob counterclockwise to reduce the levels of the low
frequencies (Bass Control) or the high frequencies (Treble Control), and
turn it clockwise to increase the levels for the low or high frequencies.
See Figure 32.
Figure 32 – Tone Controls
You may also adjust the balance to compensate for speaker placement
or the acoustic characteristics of your listening room. Ideally, the audio
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