Network Audio Player / ST-C700


A "humming" sound can be heard during playback.

An AC mains lead or fluorescent light is near the cables. Keep other appliances and cords away from the cables of this unit.

No sound.

  • Check the volume of the connected device (amplifier, etc.).
  • Check to see if the cable connections to the input and output terminals are incorrect. If this is the case, turn off this unit and reconnect the cables correctly.
  • Check to see if the correct input source is selected.
  • Insert the plugs of the cables to be connected all the way in.
  • When "Digital Output" or "Analog Output" is set to "Off", no sound will be output. Change the setting of the output terminal in the setup menu to be used to "On".
  • Playback of multi-channel content is not supported.

The sound is interrupted.

Depending on your environment, the audio may be interrupted during playback. Check the operating instructions of the connected device and the connection to the device.

Playback does not start.

Depending on your environment or connected devices, it may take some time.

The system control function is not working.

About Technics devices supporting system control function, click here.

What Technics devices support system control function?

  • You can operate this unit and Technics devices supporting system control function simultaneously with ease on the remote control.
  • About Technics devices supporting system control function, click here.

The unit turns off automatically.

  • Is the auto off function turned on?
    To cancel this function
  1. Press [NWP].
  2. Press [HOME].
  3. Press [ UP ][ Down ] repeatedly to select "SETUP"and then press [OK].
  4. Press [ UP ][ Down ] repeatedly to select"AUTO OFF" and then press [OK].
  5. Press [ UP ][ Down ] to select "Off" and then press[OK].
  • If the SU-C700 is connected to this unit via the system control function, this unit may automatically enter standby mode when the SU-C700 enters standby mode.

How to change the Friendly Name.

  1. Press [NWP].
  2. Press [HOME].
  3. Press [ up ][ down ] repeatedly to select "SETUP" and then press [OK].
  4. Press [ up ][ down ] repeatedly to select "Network" and then press [OK].
  5. Press [ up ][ down ] repeatedly to select "Friendly Name" and then press [OK].
  6. Press [ up ][ down ] [ left ][ right ] to input the Friendly Name.
    • - Only ASCII characters can be used.
    • - "A" can be added when you press the [ right ] at the time of the last letter of the Friendly Name is selected.
    • - Press [CLEAR] to delete a letter.
    • - Press [ ≥10 ] to insert a letter "A".
    • - Default name is "Technics ST-C700 _ _ _ _ _ _"*1.
      *1 " _ " stands for a digit that is unique to each set.
  7. Press [OK] to apply the Friendly Name.
  8. Press [RETURN] repeatedly to exit the settings.

Please tell me the contents displaying on the main unit's display during playback.

In case of input source is LAN, DMR, AirPlay or USB, press [INFO] button to display the track, artist, and album names, file type, sampling frequency, and other information.

  1. Input Source
    LAN : Digital Media Player
    DMR : Digital Media Renderer
    AirPlay : AirPlay
    USB : USB device/USB flash drive
  2. The track, artist, and album names
    : Track name
    : Artist name
    : Album name
  3. Random repeat or Repeat playback (for LAN and USB)
    : All tracks in a folder are repeated randomly.
    : Only plays the selected track.
    : All tracks in a folder are repeated.
  4. Elapsed time, remain time and playback status
    : Elapsed time
    : Remain time
    : Play, Pause, Search (These icons may be not visible depending on Input Source.)
  1. File format (except AirPlay)
  2. Sampling frequency
  3. Number of quantisation bits (except MP3, AAC, WMA, DSD)


Cannot connect to the network.

Confirm the network connection and settings.

Cannot connect to the unit.

  • Make sure that the multicast function on the wireless router is enabled.
  • Make sure that the device and the unit are connected to the same network.
  • Reconnect the compatible device to the network and then connect to this unit again.
  • Set "Network Standby" in the setup menu to "Off" , turn this unit off and on, and then connect to this unit again.

Playback does not start.
The sound is interrupted.

  • Simultaneous use with other 2.4 GHz devices, such as microwaves, cordless telephones, etc., may result in connection interruptions. Increase the distance between the wireless router and these devices.
  • If several wireless devices are simultaneously using the same wireless network as this unit, try turning off the other devices or reducing their wireless network usage.
  • If the playback stops, check the playback status on the device.

Cannot find music files stored on the PC.

When you play back music files over a network, those that are not registered to its network server are not displayed. Whether or not each music file can be played back over your network is determined by the network server even if the format of the file is supported by this unit. For example, if you are using Windows Media® Player 11, not all music files on the PC are playable. You can play back only those added to the library of Windows Media® Player 11.

Cannot display the information properly.

  • Track names, etc. may not be displayed properly.


Playback does not start.

  • Please confirm the update information of NAS.
  • When transcode setting is available, please try to select other settings.


Cannot operate.

  • Select "USB" as the input source.
  • Check that the iPhone/iPad/iPod is connected properly.
  • Connect the iPhone/iPad/iPod again or try to restart the iPhone/iPad/iPod.
  • The battery of the iPhone/iPad/iPod is depleted. Charge the iPhone/iPad/iPod, and then operate again.

iPhone/iPad/iPod does not charge.

  • Make sure the unit is turned on when you start charging.
    – When charging an iPhone/iPad/iPod whose battery is depleted, do not turn this unit to standby mode until the iPhone/iPad/iPod becomes operational.


The USB drive or its contents cannot be read.

The USB drive format or its contents is/are not compatible with the unit.

No response when [ play / pause ] is pressed.

Disconnect the USB device and then reconnect it. Alternatively, turn the unit off and on again.

Slow operation of the USB flash drive.

Large file size or high memory USB flash drive takes longer time to read.

Cannot display the information properly.

  • Track names, etc. may not be displayed properly.


The PC does not recognise this unit.

  • Check your operating environment.
  • Restart the PC, turn off and on this unit, and then reconnect the USB cable.
  • Use another USB port of the connected PC.
  • Install the dedicated USB driver if using a PC with Windows.

Cannot play music stored on the PC.

  • This unit does not guarantee playback with all music player applications. Use the dedicated app "Technics Audio Player for Windows / Mac". For information of Technics Audio Player for Windows / Mac, refer to the following website.


Pairing cannot be completed.

Check the Bluetooth® device condition.

The device cannot be connected.

  • The pairing of the device was unsuccessful or the registration has been replaced. Try re-pairing the device.
  • This unit might be connected to a different device. Disconnect the other device and try re-pairing the device.

The device is connected, but audio cannot be heard through this unit.

  • For some built-in Bluetooth® devices, you have to set the audio output to "ST-C700" manually. Read the operating instructions for the device for details.

NFC is not working.

  • Make sure the NFC feature of the device are turned on.
  • When you try again, change the angle at which the Bluetooth® device touches the NFC touch area.
  • Turn on the NFC feature of this unit when you connect a device using NFC.


  • Turn on the NFC feature of the device.
  1. Press [NWP].
  2. Press [> INPUT <] below [NWP] repeatedly to select "Bluetooth".
  3. Press [MENU].
  4. Press [ up ][ down ] repeatedly to select "NFC" and then press [OK].
  5. Press [ up ][ down ] to select "Yes" and then press [OK].
  6. Touch and hold your device on the NFC touch area of this unit within 20 seconds.
  • Do not move the Bluetooth® device until it displays a message or reacts in some way.
    Once the Bluetooth® device has reacted, move the device away from this unit.
    – When the connection of the Bluetooth® device is complete, the name of the connected device is indicated on the display.
    – The location of the NFC touch area differs depending on the device. When a connection cannot be established even if your Bluetooth® device has touched the NFC touch area of this unit, change the position of the device.


Reception is poor or a beat sound is heard.

  • Keep the antenna away from computers, TVs, other cables and cords.
  • Use an outdoor antenna.

Remote control

The remote control does not work properly.

  • To avoid interference, please do not put any objects in front of signal sensor.
  • Change the remote control code if other products react to this remote control.
    - Point the remote control at this unit, and press and hold [OK] and the numeric button [1] or [2] for at least 4 seconds.
    - When the remote control code is changed, the new code will appear on the display for a few seconds.
  • If the SU-C700/SL-C700 is selected for the device to be operated, press [NWP] and retry the operation.

Pressing [DIMMER] changes the display, the light and the indicator brightness of the SU-C700/SL-C700.

[DIMMER] works for the SU-C700/SL-C700 as well as this unit. Turn off the device that you want to maintain the brightness level of, and press [DIMMER].

The following messages or service numbers may appear on the unit’s display.


The unit has been left unused for about 20 minutes and will shut down within a minute. Press any button to cancel it.

"Checking Connection"

The unit is checking the connected iPhone/iPad/iPod or a USB device.

"Download Error"

  • The firmware download has failed. Press any button to exit. Please try again later.
  • The server cannot be found. Press any button to exit. Make sure that the network is connected to the Internet.


  • The selected folder is empty. Move tracks into the folder and retry the operation.
  • The server is not found on the network. Check to see if the server is connected to the same network as this unit, and retry the connection to this unit.


Incorrect operation is performed. Read the instructions and try again.

"F□□" ("□" stands for a number.)

  • There is a problem with this unit.
    – Is the volume extremely high? If so, lower the volume.
    – Is this unit placed in an extremely hot place? If so, move this unit to a cooler place and wait a few moments and then try to turn it on again.
    If the problem persists, write down the displayed number, disconnect the AC mains lead and consult your dealer.

"No Network Connection"

This unit is not connected to the network. Check the network connection.

"No Memory"

There are no preset DAB/DAB+ stations to select. Preset some channels.

"No Signal"

This station cannot be received. Check your antenna.

"Not Conditional"

The function you have tried to use is not available with the current settings. Check the steps and settings.

"PGM Full"

The number of programmed tracks is more than 24.

"Please Wait"

This is displayed, for example, when this unit is turned on/off. (For up to 1 minute and 30 seconds)

"Remote□" ("□" stands for a number.)

  • The remote control and this unit are using different codes. Change the code on the remote control.
    – When "Remote 1" is displayed, press and hold [OK] and [1] for at least 4 seconds.
    – When "Remote 2" is displayed, press and hold [OK] and [2] for at least 4 seconds.

"Scan Failed"

Stations are not receivable. Check your antenna and try Auto scanning. If "Scan Failed" is still displayed, find the best signal reception with the "Manual Scan" tuning function.


The unit is checking the DLNA server on the network.


  • "PC" is selected, but a PC is not connected. Check the connection with the PC.
  • Audio signals, such as sampling frequency components, are not input correctly.
    – About supported format, refer to "File format" in the operating instructions.

"USB Over Current Error"

The iPhone/iPad/iPod or USB device is drawing too much power. Disconnect the iPhone/iPad/iPod or USB device and turn the unit off and on again.

"Hub Device Not Supported","Unrecognizable Device","Unsupported","Unsupported USB Device"

  • You have connected an iPhone/iPad/iPod or USB device that is not supported.
    – If the iPhone/iPad/iPod is compatible, turn it on and connect it correctly.
  • The format of the file on the iPhone/iPad/iPod or USB device is not supported.
    – About supported format, refer to "File format" in the operating instructions.