DB Drive A7 3500H.1, A7 3500L.1, A7 7500.1 Panduan Pengguna - Halaman 7
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4. TROUBLE SHOOTING
NO SOUND ( NO OUTPUT )
1) Please check all connections, cables' routing, short and voltage at OKUR amplifiers and headunit.
2) Please check built-in or external fuses, If it is brown, please repalce with new one.
3) Please check whether speakers work well, you can test speakers by connecting to another amplifiers.
PROTECTION
1) Please check overload, overheat ( thermal ) , short, voltage and DC offset.
2) Minimum working impedance for A7 3500L.1, A7 3500L.1 and A7 7500.1 is 1 ohm for single unit and
2 ohm for linked operation.
3) If the OKUR competition amplifiers are shut down due to overheat, Reset by turning off the remote input
and allowing time to cool down.
Please make sure there are no airflow obstructions around OKUR competition amplifier to prevent thermal
protection.
4) A7 3500L.1 has voltage protection as 8.5 ~ 16 volts
A7 3500H.1 and A7 7500.1 have voltage protection as 8.5 ~ 18volts
If Voltage is out of range as above, OKUR competition 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 connections.
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