DAPAudio PA240, Owner'S Manual

14

Problem

Cause

Solution

No lights illuminates when the
POWER button is pressed.

1.Is the unit plugged into a live

outlet?

2.Was the AC fuse opened?
3.Was the DC fuse opened?

1.Load outlet

2.Replace AC fuse
3.Replace DC fuse

No sound is heard

1.Check if the audio source was

connected?

2.Was the audio source operating?
3.Is the volume turned up?
4.Are the speakers connected

properly?

1.Connect to audio source output.

2.Operate the audio source.
3.Turn up the volume.
4.Correctly connect speakers.

The unit’s output is intermittent or
continuously buzzing

Check if the AC power supply is
correct

No output from one or more
channels

1.Is the audio source operating?
2.Is the volume turned up?
3.Are the cables not defective?

1.Operate the audio source.
2.Turn up the volume.
3.Replace the signal cable.

Fuse often blown

1.Was the volume turned to full?
2.Were the speakers connected

correctly?

3.Were the wires of the speaker

connected correctly?

4.Is the impedance of the speakers

correct?

5.Is the speaker good?

1.Turn down the level volume.
2.Connect the speaker correctly.

3.Connect the speaker wires correctly.

4.Connect the matching output terminal

or replace with the matching impedance.

5.Replace the speaker.

The LED bar graph’s output is
normal, but there is no output
at load.

1. The unit self-protection was worked,
    please press the power button to off
    wait for a time, is normal?
2. Check you connector's anything is
    normal?
3. Perhaps over load or deviant operation,
    cause this unit's DC fuse open, please
    call a qualified technician or consult an
    authorized.

Overload LED keeps blinking

1.Is the connection of the output

terminal ok?

2.Is the connected load too heavy?

3. Is the input signal too loud?

1.Connect the speakers to the proper

output terminal.

2.Reduce the total load and keep the

impedance matching.

3. Adjust the signal level control