Troubleshooting
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The web page displays the diagnosis:
5. Click Stop to complete diagnosing.
You can click Copy to copy the content to the clipboard.
This chapter provides general troubleshooting solutions to help you solve the problems
you might encounter when using your system.
If problems you encounter are not mentioned in this chapter, you can contact your
distributor or Yealink FAE.
Check whether the display device is connected properly to the VC400/VC120
codec.
Check whether the system is in sleep mode. Press any key on the VCP40 phone or
remote control to resume system operation.
Check whether the display device is in sleep mode or is turnen off. Press the power