Troubleshooting - Clarion DB566USB Owner's Manual

9. TROUBLESHOOTING

Problem
Power does not turn on.
( No sound is produced )
No sound output when
operating the unit with
amplifiers or power an-
tenna attached.
Nothing happens when
button are pressed.
Display is not accurate.
No sound heard.
22
DB566USB
Cause
Fuse is blown.
Incorrect wiring.
Power antenna lead is
shorted to ground or
excessive current is re-
quired for remote-on the
amplifiers or power an-
tenna.
The microprocessor has
malfunctioned due to
noise, etc.
DCP or main unit connec-
tors are dirty.
The speaker protection
circuit is operating.
Measure
Replace with a fuse of the same amperage.
If the fuse blows again, consult your store of
purchase.
Consult your store of purchase.
1. Turn the unit off.
2. Remove all wires attached to the power an-
tenna 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 ampli-
fiers turn off before all wires are attached,
use an external relay to provide remote-on
voltage ( excessive current required ) .
Turn off the power, then press the [ RELEASE ]
button and remove the DCP.
Press the reset button for about 2 seconds with
a thin rod.
Wipe the dirt off with a soft cloth moistened with
cleaning alcohol.
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.