Adcom GFA-5400 Manuel d'utilisateur télécharger pdf (Page 7)

THERMAL PROTECTION LEDs O

The GFA-5400 is provided with a thermal protection circuit, which will shut down the amplifier if either heatsink's

temperature reaches 85°C. The THERMAL PROTECTION LEDs will light whenever the thermal protection circuit on its

respective channel has been triggered and the amplifier is inoperative. The thermai protection circuitry will typically be

triggered by very high power demands into impedance much lower than the amplifier is capable of driving at those levels. If

either amplifier channel’s output through the loudspeaker(s) ceases abruptly, and one or both of the THERMAL PROTECTION

LEDs glow, you will know that its heatsink temperature has become unacceptably high and the circuitry is protecting the

amplification devices. Please note that the POWER LED will remain on and the amplifier will still be energized. Once the

temperature of the heatsink(s) drops to a safe operating level, the amplifier will automatically resume operation.

Activation of the thermal protection circuitry in the GFA-5400 is an indication that the amplifier has been overdriven or

that the load the loudspeakers are presenting to the amplifier is unreasonably low. If you wish to prevent recurring activation of

the thermal protection circuitry, you must reduce the volume level demands or correct the load-impedance condition which may

be causing activation of this circuitry, or both internal protection fuses may blow.

CARING FOR YOUR GFA-5400

Great care has been taken by ADCOM to ensure that your amplifier is as flawless in appearance as it is electronically.

The front panel is a heavy gauge, high-grade aluminum extrusion carefully finished and anodized for durability. The chassis,

top cover and rear panels are heavy gauge steel, that has been powder coated and baked to ensure a lasting finish. If the front

panel, top or sides become dusty or finger printed, they can be cleaned with a soft lint free cloth, slightly dampened with a very

mild detergent solution or glass cleaner.

WARNING!

Do not spray or pour liquids of any kind on the GFA-5400.

SERVICING

ADCOM has a Technical Service Department to answer questions pertinent to the installation and operation of your unit. In the

event of difficulty please contact us for prompt advice. If your problem cannot be resolved through our combined efforts, we

may refer you to an authorized repair agency, or authorize return of the unit to our factory. To aid us in directing you to a

convenient service center, it would be helpful if you indicate which major city is accessible to your home.

Please address mail inquires to:

ADCOM Service Corporation

10 Timber Lane

Marlboro, NJ 07746 USA

Phone, Fax or E-mail inquires to:

Tel.: 732-683-2356

Fax: 732-683-9790

Monday through Friday

9:00 AM to 5:00 PM EST

[email protected]

For Fax inquires, please include a return Fax number for the reply. When calling or writing about your GFA-5400, be sure to

note and refer to its serial number as well as the date of purchase and the dealer from whom it was purchased. It is helpful In

any communications to us. Please include a daytime phone number where we may reach you. In the event the unit must be

returned to our factory for service, you will be instructed on the proper procedure when you call or write for a Return

Authorization. UNDER NO CIRCUMSTANCES SHOULD YOUR UNIT BE SHIPPED TO OUR FACTORY WITHOUT PRIOR

AUTHORIZATION, OR PACKED IN OTHER THAN ITS ORIGINAL CARTON AND FILLERS.

If the original shipping carton and its fillers have been lost, discarded, or damaged, a duplicate carton may be obtained

from our Service Department for a nominal charge.

Always ship PREPAID VIA UNITED PARCEL SERVICE (UPS) OR OTHER APPROVED CARRIER. DO NOT SHIP

VIA PARCEL POST, since the packing was not designed to withstand rough Parcel Post handling.

FREIGHT COLLECT SHIPMENTS WILL NOT BE ACCEPTED

UNDER ANY CIRCUMSTANCES.

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Adcom GFA-5400 Manuel d'utilisateur Page 7

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