Troubleshooting - Harman JBL Apex powersports PA454 Manual Del Propietário

TROUBLESHOOTING

PROBLEM
CAUSE and
SOLUTION
PROBLEM
CAUSE and
SOLUTION
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CAUSE and
SOLUTION
PROBLEM
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SOLUTION
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PROBLEM
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PROBLEM
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15
No audio and POWER INDICATOR is off.
No voltage at BATT+ and/or REM terminals, or
bad or no ground connection. Check voltages at
amplifier terminals with VOM.
No audio and PROTECT and POWER
INDICATORS flash.
Voltage less than 9V on BATT+ connection.
Check vehicle charging system.
No audio and PROTECT INDICATOR is on.
Amplifier is overheated. Make sure amplifier
cooling is not blocked at mounting location.
Verify that speaker-system impedance is within
specified limits. Or, there may be voltage
greater than 16V (or less than 8.5V) on BATT+
connection. Check vehicle charging system.
Amplifier fuse keeps blowing.
The wiring is connected incorrectly or there is a
short circuit. Review installation precautions and
procedures. Check wiring connections.
Distorted audio.
Gain is not set properly. Check INPUT LEVEL
setting. Check speaker wires for shorts or
grounds. Amplifier or source unit may be
defective.
Distorted audio and PROTECT INDICATOR
flashes.
Short circuit in speaker or wire. Remove speaker
leads one at a time to locate shorted speaker or
wire, and repair.
Music lacks dynamics or "punch."
Speakers are not connected properly. Check
speaker connections for proper polarity.