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Appendices
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Troubleshooting
Power not turning on
Can’t run the unit
No sound
Recorded sound is distorted
Can’t record/can’t import songs
Can’t play MP3/ WAV le
Problems with SD cards
Can’t set AB REPEAT segment times correctly
Problems with USB memory
Low volume from the device connected
to the GUITAR/MIC IN or AUX IN jack
Problems with USB connection
• 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 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 le's sampling rate and bit rate or the
WAV 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 e ective in
playing back these les. In such cases, convert the
song to JS-8 format. (p. 38)
"Unsupported Card!" displayed
• Is the SD card completely inserted?
• Have you inserted an SD card that is not supported by
the JS-8?
SD card data corrupted
Corruption of data on SD cards may be caused by the follow-
ing. Reinitialize the SD card.
• Could the power have been turned o 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)
USB memory not recognized
• Is the USB memory securely connected?
• The JS-8 supports FAT-formatted USB memory. On a
computer, reformat the USB memory to FAT format.
Cannot EXPORT to USB memory
• 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.