Error MessagesDuring operation, error messages might appear on the KX-NT400. The following table lists these messagesand possible causes and solutions.Message Possible Causes & Solutions ReferenceThe password youinputted was incorrect.Please try again.• The password you entered is not correct.→ Confirm the password and try again. —SD card doesn’t exist. • SD card was removed during access.→ Do not remove the SD memory card while it is beingaccessed.—Cannot access SD card.SD Card or folder notfound.The firmware upgradefailed because the filedoes not exist.SD card format is invalid. • The SD memory card is not formatted in FAT format.→ Format the SD memory card with the KX-NT400.• You attempted to format an SDHC memory card.→ SDHC memory cards are not compatible with theKX-NT400. Use a compatible SD memory card.Page 191Page 190Unsupported SD Cardformat.Can’t access the file. • The SD memory card cannot be used for backing up becauseit is full.→ Delete unneeded data.—Cannot access SD Card orSD Card is read-only.• The switch on the side of the SD memory card is set to theLOCK position.→ Remove the card, slide the switch to the WRITE position,and then insert the card again.Page 190Check a Network cable. • The Ethernet cable is not connected.→ Check all connections. Page 158DHCP server is not found. • The KX-NT400 cannot receive IP settings from the DHCPserver.→ Consult your administrator.—Data Acquisition Failed. • Data could not be correctly acquired from the PBX.→ Follow the instructions to restart the KX-NT400. —Firmware folder does notexist in SD card.• The folder that the KX-NT400 uses does not exist on the SDmemory card.→ On the SD card, create the following folder:\private\meigroup\pcc\pbxpt\nt400—The firmware file has notbeen downloaded. Pleasecheck the settings anddownload the firmwarefirst.• The file necessary for upgrading the firmware has not beendownloaded.→ On the Firmware Version Update screen, press Startnext to Download to begin the downloading the firmwareupgrade file.Page 171Operating Instructions 201Appendix