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KDC-MP342U/ KDC-MP242U
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 <Basic Operation> (page 4)
is not set to On.
• Preout is not set to subwoofer. ☞ “SWPRE” of
<Menu system> (page 6)
! • Cannot register a security code.
• Cannot set up Display.
▲
<Demonstration mode setting> (page 13) is not
turned off.
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 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 loaded in a different slot from that
specified.
☞ Eject the disc magazine and check the number
for the specified disc.
✔ 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.