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M455 25
English
9. TROUBLESHOOTING
Power does not
turn on.
(No sound is
produced.)
No sound output
when operating
the unit with
amplifiers.
Nothing happens
when buttons are
pressed.
Display is not
accurate
No audio.
Compact disc
cannot be loaded.
Sound skips or is
noisy.
Sound is bad
directly after
power is turned
on.
Source selection
does not
recognize CeNET
source
connection.
Problem
Fuse is blown.
Incorrect wiring.
Amplifier turn-on lead is
shorted to ground or
excessive current is required.
The microprocessor has
malfunctioned due to noise,
etc.
DCP or source unit
connectors are dirty.
The speaker protection
circuit is operating.
Another compact disc is
already loaded.
Compact disc is dirty.
Compact disc is heavily
scratched or warped.
Water droplets may form on
the internal lens.
The microprocessor has not
stored the proper CeNET
information.
The CeNET cable is not
connected properly.
Replace with a fuse of the same amperage. If the
fuse blows again, consult your store of purchase.
Consult your store of purchase.
Turn the unit off and check each wire for a possible
short. If the amplifier turn-on lead shorts out, cover it
with insulation such as tape.
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. Check the speaker connection.
2. Turn down sound volume. Function can also be
restored by turning the power off and on again.
3. If the sound is muted again, consult your store of
purchase.
Eject the compact disc before loading the new one.
Clean the compact disc with a soft cloth.
Replace with a compact disc with no scratches.
Let dry for about 1 hour with the power on.
Perform a system check.
See “Operations Common to Each Mode”,
performing a system check section.
Ensure the CeNET cables are properly connected.
Cause Measure
CD
General
CeNET
Reset button