Harman Kardon HK 3390, Service Manual

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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 3390
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 3390 is in Standby mode and is ready to be turned
on. See Figure 23.
The HK 3390 may be turned on by pressing the Power Switch or any
Source Selector on the front panel or the remote. See Figure 24.
The Power Indicator will turn white to indicate that the HK 3390 is on.
If the PROTECT message appears, 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 3390 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 3390 is left
unplugged, any settings you have programmed, including system
configuration and preset radio stations, will be preserved indefinitely.
Sleep Timer
You may program the HK 3390 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 25 and 26.
Figure 25 – Front-Panel Sleep Button Figure 26 – 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.
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 27.
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 3390. 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 27 – Volume Controls
The HK 3390 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 28. 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 3390 will
also end muting.
Figure 28 – Mute Buttons
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 29.
Figure 29 – Tone Controls
You may also adjust the balance to compensate for speaker placement
or the acoustic characteristics of your listening room. Ideally, the audio
should be heard most clearly at a point exactly midway between the left
OPERATION
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HK3390
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