7
8. General troubleshooting Guidelines
9.
Accessories
Troubleshooting
Resolution
No output and no
LEDs lit
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.
LEDs lit but no
Output
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.
Power and All LEDs
flickers
1. Reboot the device.
2. Please contact distributor if repeatedly reboot without result.
Online Failure
on the Computer
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) No
?
or
!
.
3. Close GUI, reconnect USB cable and click GUI to online.
4. Please contact distributor if repeatedly reboot without result.
Impossible to
suppress howling
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.
Accessories
Qty.
User’s Manual
1 Piece
USB to S Terminal Wire
（
Firmware Update or
Online use)
Optional
