Troubleshooting/Qa - Fosi Audio DAC-Q4 User Manual

Troubleshooting/QA

1: How do I power the DAC-Q4?
• You will need to use the supplied Micro-USB cable to power it, we
recommend using the PC-USB port/5V power adapter to power it.
Note: The Micro-USB cable cannot be fully inserted into the
device power port, please do not force it. Subsequent
revisions have been made.
2: Why is it that all my wires are plugged in, but the Q4
RCA analog output is silent?
• At this point, you should check to see if the headphone output is
plugged into the headphone. If so, you should unplug the headset
to simulate RCA output.
3: Why do I get endless white noise?
• Please check that your input device is using Dolby/DTS audio,
please switch off Dolby/DTS audio and try again.
4: No Dolby/DTS audio and I still get noise through the
USB input?
• Please switch the USB port to USB 3.0 or back USB port and try
again, as some USB ports have unstable data transmission;
• Please try again with another computer;
• Please replace the PC-USB cable and retest, contact us for
compensation if the original cable is faulty;
• Please change the power supply adaptation and retest, why?
Because of the ageing of the power supply there may be an
abnormal power supply resulting in white noise. We recommend
using the PC-USB port/5V power adapter to power it.