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Troubleshooting Guide
Some functions of this unit may be disabled by
some settings made on this unit.
!
• Cannot set up the subwoofer.
• Cannot set up the low pass filter.
• No output from the subwoofer.
• <Subwoofer output> of <Function Setting> (page
8) is not set to On.
• Preout is not set to subwoofer. ☞ "SWITCH PRE"/
"SWITCH PREOUT" of <Function Setting> (page 8)
!
Cannot set up the subwoofer Phase.
Subwoofer Low Pass Filter is set to "THROUGH".
☞ "LPF SUB-W"/ "LPF SUBWOOFER" of <Function
Setting> (page 8)
!
The number of songs contained in "SONGS"
category of this unit is different from that
contained in "SONGS" category of iPod.
Podcast files are not counted in this unit as this unit
does not support the playback of podcast files.
!
Volume cannot be adjusted.
• The unit is set to Music Search mode. ☞ Cancel the
Music Search mode. (page 12)
• The unit is set to Function Setting mode. ☞ Cancel
the Function Setting mode. (page 8)
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KDC-U446/ KDC-U346/ KDC-U5046/ KDC-U4046/ KDC-U3046
What might seem to be a malfunction in your unit
may just be the result of slight misoperation or
miswiring. Before calling service, first check the
following table for possible problems.
General
?
The Touch Sensor Tone (beep sound) does not
sound.
✔ The preout jack is being used.
☞ The Touch Sensor Tone cannot be output from
the preout jack.
Tuner source
?
Radio reception is poor.
✔ The car antenna is not extended.
☞ Pull the antenna out all the way.
Disc source
?
The specified disc does not play, but another one
plays instead.
✔ The specified CD is quite dirty.
☞ Clean the CD, referring to the CD cleaning of the
section on <Handling CDs> (page 3).
✔ The disc is severely scratched.
☞ Try another disc instead.
Audio file source
?
The sound skips when an Audio file is being
played.
✔ The media is scratched or dirty.
☞ Clean the media, referring to the CD cleaning of
the section on <Handling CDs> (page 3).
✔ The recording condition is bad.
☞ Record the media again or use another media.
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