MB QUART RAA2400, Инструкция по установке и эксплуатации

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11
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ROUBLESHOOTING
Amplifier Does Not Turn On
Possible Cause
The in-line fuse on battery positive
cable is blown.
Poor ground connection
Poor power connection or power
outside acceptable range.
Solution
Check in-line fuse on battery positive cable. Replace if necessary.
Verify that Ground connection is connected to clean metal on the
vehicle’s chassis. Repair/replace if necessary.
Verify there is 10.5 - 15.5 Volts present at the positive battery and
remote turn-on cable. Verify quality connections for both cables
at amplifier, stereo, and battery/fuseholder. Repair/replace if
necessary.
No Sound Coming From Amplifier
Possible Cause
Poor RCA connections.
Poor speaker connections
Bad source unit
Solution
Verify good RCA input connections at source and amplifier. Check
entire length of cables for kinks, splices, etc. Test RCA inputs for
AC voltage with the source unit on. Repair/replace if necessary
Use an ohm meter to check speaker wire integrity. Check entire
length of wires for kinks, splices, etc. Repair/replace if necessary.
Connect RCA input from test source directly to amplifier input. If
this solves the problem, have the source unit repaired or replaced.
If not, have the amplifier checked by a qualified technician.
Speaker "Pop" When Amplifier Turns On
Possible Cause
Remote from source unit comes on too
quickly.
Poor remote power signal from source
Solution
Disconnect input signal to amplifier and turn amplifier on and off.
If the noise is eliminated, connect the REM lead of amplifier to
source unit with a delay turn-on module
Use a different 12 Volt source for REM lead of amplifier (i.e.
battery direct). If the noise is eliminated, use a relay to isolate the
amplifier from noisy turn-on output.
Excessive Engine Noise
Possible Cause
RCA cables too close to main power
cables.
Bad component in the signal chain
Poor ground connection at system
components
Poor ground connection at battery
Solution
Route all signal carrying wires (RCA, Speaker cables) away from
power and ground wires.
Bypass any and all electrical components between the source and
the amplifier(s). Connect source directly to input of amplifier. If
noise goes away the unit being bypassed is the cause of the noise.
Remove existing ground wires for all electrical components.
Reground wires to different locations. Verify that grounding
location is clean, shiny metal free of paint, rust etc
Add secondary ground cable from negative battery terminal to the
chassis metal or engine block of vehicle.