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8. General troubleshooting Guidelines
Troubleshooting
No output and no
LEDs lit
LEDs lit but no
Output
Power and All LEDs
flickers
Online Failure
on the Computer
Impossible to
suppress howling
9. Accessories
Accessories
User's Manual
USB to S Terminal Wire（Firmware Update or
Online use)
1. Panel function buttons are workable and if LEDs lit.
2. Check POWER switch is on.
3. Check mains lead is connected.
4. Check the fuse hasn't blown.
5. Please contact distributor if repeatedly reboot without result.
1. Check Input signal.
2. Check Output signal to Amplifier and Loudspeaker.
3. Power off and reboot.
4. Please contact distributor if repeatedly reboot without result.
1. Reboot the device.
2. Please contact distributor if repeatedly reboot without result.
1. Check if the communication line is properly connected（Use the line with the device）.
2. Check if the communication line driver installed correctly, the Device Manager in the PC could
recognize Virtual Serial Port(COM)
3. Close GUI, reconnect USB cable and click GUI to online.
4. Please contact distributor if repeatedly reboot without result.
1. Check if on Bypass state.
2. Check if the suppression sensitive is proper.
3. Check if the system Gain is too large.
4. Please contact distributor if repeatedly reboot without result.
Resolution
No ? or !.
Qty.
1 Piece
Optional
7
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