Ateis DPA2500, Руководство пользователя

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5 Troubleshooting
Problem Cause Troubleshooting
Amplifier does not start-up when the AC
mains is connected.
1. Check if the voltage is under the normal range (100 ~
240VAC).
2. Check if the Service Request Contact output is open.
If yes, the hardware is damaged/broken.
No back-up power when 48VDC power
supply is connected.
1. Check the voltage is under the normal range (43 - 56
VDC).
2. Check if the Service Request Contact output is open.
If yes, the hardware is damaged/broken.
Power LED does not light up after the AC
mains is connected.
Please contact your dealer to deal with this problem.
Battery LED does not light up after the
48VDC power supply is connected. Set 'OFF'' on [EN54-16] DIP switch to enable the 48VDC
battery detection.
Signal LED does not light up while inputs
the audio signal to amplifier. Set 'OFF'' on [EN54-16] DIP switch to enable the Signal
LED.
Gen-fault LED remains yellow.
Over-current
Overheat
1. Check the load resistance of
speaker output. For example, if the
load resistance at 100V on
DPA2500 is lower than 20 ohm, a
fault will be occurred. See
Technical
Data > Loudspeakers Outputs .
2. Disconnect the speakers, and
check if the output is short.
3. Check if the Service Request
Contact output is open. If yes, the
hardware is damaged/broken.
AC power fault
Battery power
fault
1. Check the voltage is under the
normal range:
AC mains: 100 ~ 240VAC
Battery supply: 43 - 56VDC
2. Check if the Service Request
Contact output is open. If yes, the
hardware is damaged/broken.
Overload LED remains yellow.
1. Check the load resistance of speaker output. For
example, if the load resistance at 100V on DPA2500
is lower than 20 ohm, a fault will be occurred. See
Technical Data > Loudspeakers Outputs .
2. Check if the input is over 0 dB.
Amplifier channel fault LED remains yellow.
Over-current
Overheat
1. Check the load resistance of
speaker output. For example, if the
load resistance at 100V on
DPA2500 is lower than 20 ohm, a
fault will be occurred. See
Technical
Data > Loudspeakers Outputs .
2. Disconnect the speakers, and
check if the output is short.
3. Check if the Service Request
Contact output is open. If yes, the
hardware is damaged/broken.
No sound coming from loudspeaker.
1. Check if the volume of gain knob is too small.
2. Check if the speaker wiring is correct.
If the problem cannot be solved, please contact your dealer to deal with this problem.