Dan D'Agostino Monoblock amplifier Руководство пользователя - Страница 6

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OPERATION

Initial power-up of the amplifier
Move the rear panel power breaker switch to the up position to place the amplifier in standby
mode. The main power button is located on the front underside edge of the amplifier. Pressing
the button will power up the amplifier and illuminate the power meter.
After power is switched on, the Progression amplifier requires approximately 30 minutes to reach
optimal operating temperature. Although the amplifier will sound excellent upon initial listening,
the sound quality will improve as it warms up.
During operation
The Progression amplifier requires no adjustments during normal operation. If there is no sound
or the sound quality is in some way impaired, consult the Troubleshooting section in this manual.
Light switch
This switch has three positions. Move it to the left (when looking at the amp from the rear) for
low brightness and to the right for high brightness. The center, off position, turns the meter
illumination completely off.

MAINTENANCE

The Progression amplifier requires no user maintenance other than to keep it clean and ensure
that the vents remain unobstructed.
To clean the amplifier, first disconnect the AC plug. Spray a small amount of distilled water or a
cleaning solution such an Endust or Pledge onto the supplied microfiber cloth and gently wipe
the amplifier's surface along the direction of the metal grain, with light pressure only. Never use
a circular motion or heavy pressure, as this can permanently scratch the machined surfaces.
Do not spray the cleaner directly onto the amplifier.
If dust or other contaminants or objects collect around the heat sink venturis or the vents at
the top and bottom of the amplifier, remove small objects by hand and use a shop vacuum or
hand vacuum to remove the dust. Use a brush attachment on the vacuum to avoid scratching the
amplifier's surface.
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TROUBLESHOOTING

Amplifier will not power up
If the front meter is not illuminated, follow the procedure outlined below. If one step succeeds
in activating the power, stop there and ignore the other steps.
1.
Push the power switch on the front underside edge of the amplifier.
2.
Check to make sure the AC cord is plugged into the wall outlet.
3.
Check at the back of the amplifier to make sure the IEC connector is pushed all
the way into the jack on the back of the amplifier.
4.
Check your household electrical box to make sure the circuit breaker has not been
tripped. If it has, flip the breaker back on.
5.
If the breaker trips again, check the speaker cable connection on the amplifier and
the speaker to make sure that the terminals are not shorted, and check the entire
length of the cable to ensure there has been no damage to it.
6.
If all of these steps fail to return power to the amplifier, consult your dealer for service.
Front meter is illuminated but you hear no sound
Follow these steps in order. If one step succeeds in restoring sound, stop there and ignore the
other steps.
1.
Check your preamp and source device to make sure they are both turned on.
2.
Check the source device to make sure it is playing; i.e., if it's a record player, make
sure it's spinning and the tonearm is lowered, or if it's a CD player, make sure it's in
play mode and not in pause.
3.
Make sure your preamp is not muted and that the desired source is selected.
4.
Check the line-level connections between the source device and the preamp,
and between the preamp and the amplifiers. Reconnect any cables that may have
become disconnected.
5.
Check the cables between the amplifiers and the speakers to make sure they are
properly connected and that the cables have not become damaged.
6.
If you have a spare pair of interconnect cables (even cheap ones will work
temporarily), try using them between the source device and the preamp and between
the preamp and the amplifier. If this restores sound, replace the defective cables.
7.
If all of these steps fail to restore sound, consult your dealer for service.