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34
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FB275BT / FB275BTB
9. TROUBLESHOOTING
Replace with a fuse of the same amperage.
If the fuse blows again, consult your store of
purchase.
Power does not turn on.
(
No sound is produced
)
No sound output when
operating the unit with
amplifiers or power
antenna attached.
Problem Cause Measure
Fuse is blown.
Incorrect wiring.
Power antenna lead is
shorted to ground or
excessive current is
required for remote-on
the amplifiers or power
antenna.
Nothing happens when
button are pressed.
Display is not accurate.
The microprocessor has
malfunctioned due to
noise, etc.
General
1. Turn the unit off.
2. Remove all wires attached to the power
antenna lead. Check each wire for a
possible short to ground using an ohm
meter.
3. Turn the unit back on.
4. Reconnect each amplifier remote wire to
the power antenna lead one by one. If
the amplifiers turn off before all wires are
attached, use an external relay to provide
remote-on voltage
(
excessive current
required
)
.
Perform factory restore. Please refer
“Restoring to factory default setting” on
page 30 for more details.
1. Turn down sound volume. Function can
also be restored by turning the power off
and on again.
(
Speaker volume is reduced
automatically when the speaker protection
circuit operates
)
.
2. If the sound is muted again, consult our
service department.
No sound heard.
Consult your store of purchase.
The speaker protection
circuit is operating.
Problem Cause Measure
SD memory card
No sound heard.
Sound is cut or skipped.
Noise is generated or
noise is mixed with
sound.
SD/MMC memory card
is not readable.
MP3 files are absent in a
SD memory card.
Files are not recognized
as an MP3 file.
MP3 files are not
encoded properly.
File system format is not
correct.
Write MP3 files onto the SD memory card
properly.
Use MP3 files encoded properly.
Use MP3 files encoded properly.
Format SD memory card as FAT12 or FAT16.
Incompatible SD/MMC. Please make sure your SD/MMC is supported
or consult your nearest Clarion dealer for SD/
MMC compatibility.
MP3 files are unable
to playback, display
remains pause or
loading.
Those MP3 files may
be corrupted or do not
encoded properly.
Use MP3 files encoded properly.