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Auna C500.4 - 10032118 Manual

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Troubleshooting
Problems Cause / Solution
The power indicator does not light up. • The fuse is loose or blown -- fasten the fuse or
change it with a new one.
• The ground lead is not securely connected -- fasten
a metal point of the car.
• The connection master unit is not turned on, -turn
on the master nuit.
• The system employs too many ampliers.--use a
relay.
• Check the battery voltage (10.5-15V).
The speaker output is o. The protection
indicator light up in red.
• The speaker outputs are short -circuited.-Turn o
power.
• switch, Rectify the cause of the short -circuit and
correct.
The unit heats up abnormally or
operating temperature.
• Use speakers with suitable impedance--2~8 Ω
(stereo), 4~8Ω (when used as a bridging amplier).
• Make sure to place the unit in a well ventilated
location.
Alternator noise is heard. • The power connecting leads are installed too close
to the RCA pin cords.--Tidy these connecting leads
and keep the leads away from the cords.
• The ground lead not securely connected--Fasten the
ground lead securely to a metal point of the car.
• Negative speaker leads are touching the car
chassis.--Keep the leads away from the car chassis.
The sound is muled. • The FILTER switch set to the "LPF" position.
The sound in too low. • The level adjustment control is set "MIN"position.
… 24 …


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