Roland eBand JS-8 ユーザーズマニュアル

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•  Make sure the JS-8's AC adaptor is properly connected 

to the power outlet and the JS-8 (p. 4).

•  Is the JS-8 connected via USB to the computer appli-

cation?

•  Is the MASTER LEVEL knob turned down? (p. 6)
•  Is the SPEAKER switch set to OFF? (p. 31)
•  Are there any songs on the SD card?

•  Could the guitar level be excessive?

•  Do you have an SD card inserted?
•  Is the SD card lock on?
•  Does the SD card have too little free space available?
•  Are you using an SD card that is known to work with 

the JS-8?

•  Do you have more than 4,000 songs (including  WAV 

and  MP3 fi les)? (p. 28) Delete any songs you don't 
need. (p. 31)

•  The JS-8 only handles up to 2,000 artist, album, and 

keyword headings. Delete any unneeded artists, 
albums, or keywords. (p. 28)

•  Are the  MP3 fi le's sampling rate and bit rate or the 

 WAV fi le's sampling rate and quantization bit rate sup-
ported by the JS-8? (p. 3)

•  Increasing the playback speed or changing the pitch 

of  MP3s with higher bit rates may not be eff ective in 
playing back these fi les. In such cases, convert the 
song to JS-8 format. (p. 38)

•  Is the SD card completely inserted?
•  Have you inserted an SD card that is not supported by 

the JS-8?

Corruption of data on SD cards may be caused by the follow-

ing. Reinitialize the SD card.

•  Could the power have been turned off  during record-

ing or while the JS-8 was connected via USB to your 
computer?

•  Did you disconnect the USB cable while the JS-8 was 

connected to a computer?

•  Did you remove the SD card while the JS-8 was still 

turned on?

•  Could the SD card have been subjected to strong 

impact?

•  You cannot set the interval between Point A and Point 

B to a value less than 0.5 seconds. Increase this inter-
val so that it is at least 0.5. seconds.

•  You may be unable to properly play back  AB REPEAT 

segments with  MP3s. In such cases, convert the song 
to JS-8 format. (p. 38)

•  Is the USB memory securely connected?
•  The JS-8 supports FAT-formatted USB memory. On a 

computer, reformat the USB memory to FAT format.

•  Is the USB memory write protected?
•  Does the USB memory have too little free space avail-

able?

•  Are you using a connection cable that includes a resis-

tor? Use connection cables that do not contain resis-
tors.

•  Is the external device's volume properly adjusted?
•  Is the GUITAR LEVEL knob turned down? (p. 8)
•  Is a mic connected with  INPUT GAIN switched to the 

guitar setting? Adjust the  INPUT GAIN. (p. 31)

•  Is the USB cable properly connected?
•  Is the computer turned on?
•  Are you using an OS supported by the JS-8?
•  Is the SD card completely inserted?
•  Have you inserted an SD card that is not supported by 

the JS-8?

Adjust the GUITAR 

LEVEL (p. 8) or SONG 

LEVEL (p. 38) so that "" 

does not light.