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TROUBLESHOOTING
TROUBLESHOOTING:
Symptom
No sound
/ No active PWR LED
Noise or Distorted sound
/ Low output
Amplifier Protection mode
(PRT)
• Check and measure voltage at +12V and REM terminals
(allowed working range is 10.5-15.5V DC).
• Check and measure ground connections.
• Check external fuse.
• Check input signal and cables from source unit.
• Check speaker wires and terminals.
• Check crossover/input level/control knobs and switches.
• Check ground connections of all installed audio equipment,
(source unit, dsp etc.).
• Check speaker wires for possible short circuit.
• Check impedance load of the speaker/speakers according to
the manual.
• Check speaker connections for proper polarity.
• Check impedance load of the speaker/speakers according to
the manual.
• Check chassis ground connections.
• Check speaker wires for possible short circuit.
• Check power input voltage
(allowed working range is 10.5-15.5V DC).
• Check RCA input voltage (allowed range is 0,2-5V).
• Check RCA cable for possible short circuit.
Check / Control
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