DB Drive OKUR A775.4 Podręcznik użytkownika - Strona 11

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4. TROUBLE SHOOTING

NO SOUND ( NO OUTPUT )

1) Please check all connections, cables' rounting, short and voltage at OKUR amplifiers

and headunit

2) Please check built-in or external fuses ,If it is brlown, pls 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 2 and 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 the OKUR amplifiers are shut 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 OKUR amplifiers to prevent thermal

protection

4) A7750.1, A71100.1, A71500.1, A72000.1 and A72500.1 have voltage protection as 8.5V~16V

If Voltage is out of range as above, Platinum series amplifiers will be protected.

POOR BASS RESPONSE

1) Please check speaker polaritys .

WHINING NOISE

1) Engine noise is caused by poor grounding of OKUR amplifiers, headunit, other

components, battery or alternator, so please check all grounding connection.