DB Drive G7 3500.1 Manuel de l'utilisateur - Page 13
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4. TROUBLE SHOOTING
NO SOUND ( NO OUTPUT )
1) Please check all connections, cables' routing, short and voltage at G7 amplifiers
and headunit.
2) Please check external fuses. If any are blown, replace with new one.
3) Please check whether speakers work well. You can test speakers by connecting to another amplifier.
PROTECTION
1) Please check overload, overheat ( thermal ), short, voltage and DC offset.
2) Minimum working impedance for 4 channel amplifiers is 2 ohm stereo or 4 ohm mono
Minimum working impedance for all Class D mono amplifiers is
1 ohm for single unit and 2 ohm for linked operation.
3) If G7 amplifier shuts down due to overheat, Reset by turning off the remote input and
alowing time to cool down.
Please make sure there are no airflow obstructions around G7 amplifiers to prevent
thermal protection.
4) G7 1250.1, G7 2500.1, G7 3500.1, and G7 5000.1 have voltage operation of 8.5V~16V
If Voltage is out of range of above, G7 amplifiers will be protected.
POOR BASS RESPONSE
1) Please check speaker polarities .
WHINING NOISE
1) Engine noise is caused by poor grounding of G7 amplifiers, headunit, other
components, battery or alternator, so please check all grounding connection.
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