Focal FP 2.75 Manuel De Service page 159

Troubleshooting
8 Noise increasing with accelerating vehicle
- This is a ground loop phenomenon. To verify if this noise is caused by an incorrect grounding, switch off
the amplifier and the audio source, then remove the amplifier's RCA cables (ensure that they are shielded
and are not touching the chassis once disconnected). Switch the amplifier and the audio source on.
- If the problem persists, it is a grounding problem. If it disappears, the problem is due to the RCA cables
being either damaged or too close to the power cables. It is thus necessary to change and place the RCA
cables opposite the power cables.
- In the event of a grounding problem, ensure that the ground cables are correctly connected and that the
quality of the contacts is good (no paint or varnish on the grounding area).
Once all these verifications have been undertaken and if the amplifier still does not work, contact
your nearest Focal distributor.
Conditions of the Guarantee
In the event of a problem, firstly contact your Focal distributor.
The guarantee for France of all Focal material is for 1 year. In the event of faulty material, this should be sent
at your cost in its original packaging to your distributor, who will analyse the equipment and determine the
nature of the problem. If it is under guarantee, the equipment will be returned to you or replaced "post-paid".
Otherwise a quote for the repair job will be given to you. The guarantee does not cover damages caused by
improper use of improper connection of the amplifier.
Outside France, Focal equipment is covered by a guarantee with local conditions which are set out locally by
the official Focal distributor in each country, in accordance with local legislation.
Your Focal-JMlab product was developed and manufactured with high-quality materials and components
which can be recycled and/or re-used. This symbol indicates that electrical and electronic equipment must be
disposed of separately from normal garbage at the end of its operational lifetime.Please dispose of this product
by bringing it to your local collection point or recycling centre for such equipment. This will help to protect the
environment in which we all live.
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