Sony MEX-N4100BT Operating Instructions - Page 27

CD playback The disc does not play.  Defective or dirty disc.  The CD-R/CD-RW is not for audio use (page 23). MP3/WMA/AAC files cannot be played.  The disc is incompatible with the MP3/WMA/AAC format and version. For details on playable discs and formats, visit the support site on the back cover. MP3/WMA/AAC files take longer to play than others.  The following discs take a longer time to start playback.  A disc recorded with a complicated tree structure.  A disc recorded in Multi Session.  A disc to which data can be added. The sound skips.  Defective or dirty disc. USB device playback You cannot play items via a USB hub.  This unit cannot recognize USB devices via a USB hub. A USB device takes longer to play.  The USB device contains files with a complicated tree structure. The sound is intermittent.  The sound may be intermittent at a high-bit-rate of more than 320 kbps. Audio file cannot be played.  USB device formatted with file systems other than FAT16 or FAT32 are unsupported.* * This unit supports FAT16 and FAT32, but some USB device may not support all of these FAT. For details, refer to the operating instruction of each USB device or contact the manufacturer. NFC function One touch connection (NFC) is not possible.  If the smartphone does not respond to the touching.  Check that the NFC function of the smartphone is turned on.  Move the N-Mark part of the smartphone closer to the N-Mark part on this unit.  If the smartphone is in a case, remove it.  NFC receiving sensitivity depends on the device. If One touch connection with the smartphone fails several times, make BLUETOOTH connection manually. BLUETOOTH function The connecting device cannot detect this unit.  Before the pairing is made, set this unit to pairing standby mode.  While connected to a BLUETOOTH device, this unit cannot be detected from another device.  Disconnect the current connection and search for this unit from another device.  When the device pairing is made, set the BLUETOOTH signal output to on (page 9). Connection is not possible.  The connection is controlled from one side (this unit or BLUETOOTH device), but not both.  Connect to this unit from a BLUETOOTH device or vice versa. The name of the detected device does not appear.  Depending on the status of the other device, it may not be possible to obtain the name. No ringtone.  Adjust the volume by rotating the control dial while receiving a call.  Depending on the connecting device, the ringtone may not be sent properly.  Set [RINGTONE] to [1] (page 21).  The front speakers are not connected to the unit.  Connect the front speakers to the unit. The ringtone is output only from the front speakers. The talker's voice cannot be heard.  The front speakers are not connected to the unit.  Connect the front speakers to the unit. The talker's voice is output only from the front speakers. A call partner says that the volume is too low or high.  Adjust the volume accordingly using mic gain adjustment (page 16). Echo or noise occurs in phone call conversations.  Lower the volume.  Set EC/NC Mode to [EC/NC-1] or [EC/NC-2] (page 16).  If the ambient noise other than the phone call sound is loud, try reducing this noise. E.g.: If a window is open and road noise, etc., is loud, shut the window. If an air conditioner is loud, lower the air conditioner. The phone is not connected.  When BLUETOOTH audio is played, the phone is not connected even if you press CALL.  Connect from the phone. 27GB