Installation manual
46 NX604/FX503
English
●
Audio related
CD/DVD/MP3/WMA (NX604 only)
Some files or folders cannot be 
played.
When making files, delete data sections other 
than music data. Playing is not possible when 
tunes are recorded to a folder having eight or 
more layers, or the number of folders exceeds 
the maximum of 255 (including roots) and the 
number of files exceeds 512 (maximum of 255 
files in one folder).
Also, files cannot be played if the first 
character in the folder name or file name is a 
dot (.).
Incorrect display. Change the write setting to ISO9660-LV1 or 
LV2 and try writing again.
MP3/WMA recorded to CD Extra 
cannot be played.
Play a CD to which an MP3/WMA file is 
written to the 1st session of the CD Extra.
The “Disc read error.” screen is 
displayed.
Load the disc with its label surface face up.
iPod
List is not displayed. The list sometimes is not displayed since the 
number of items displayed in the list is limited. 
This is not a malfunction.
iPod operations are not possible. Cancel the USB connection, set the iPod to 
play, and reconnect it.
Cancel the USB connection, reset the iPod, 
and reconnect it.
iPod audio is not output. Perform operations from the iPod, and switch 
the settings (audio output) from Bluetooth 
(CAR-BT) to the Dock connector. Also, 
remove the iPod from the unit and reconnect 
it.
microSD card/USB memory
Cannot play from microSD card. Check to see if the microSD card can be used 
on the unit. 
p
 P.50
Cannot insert the microSD card. Insert the microSD card into the loading slot 
with its label surface face up (NX604).
Insert the microSD card into the loading slot 
with its label surface face down (FX503).
Cannot play from USB memory. Remove the USB memory and insert it again. 
Check to see if the USB memory can be used 
on the unit. 
p
 P.50
Skipping. Play on a personal computer to see if skipping 
occurs.
Poor sound. Try recording at a higher sampling frequency 
or bitrate. Check audio files that can be 
played on the unit. 
p
 P.50
Some files or folders cannot be 
played.
Playing is not possible when tunes are 
recorded to a folder having eight or more 
layers, or the number of folders exceeds the 
maximum of 512 (including roots) and the 
number of files exceeds 8000 (maximum 
of 255 files in one folder). Use the personal 
computer to reconfigure so that the number 
of folders and files are within their respective 
limits.
Also, files cannot be played if the first 
character in the folder name or file name is a 
dot (.).
Wrong number of MP3/WMA files. Delete files other than MP3/WMA.
Audio play continues but the play 
time stops.
When a file exceeding 1 GB is played, the 
display of the play time sometimes stops. This 
is not a malfunction.










