Denon DRA-F100 - Manual (Page 20)

20
ENGLISH
12 TROUBLESHOOTING
Check the following once more before assuming there is a problem with the system.
1. Are connections proper ?
2. Is the system being operated as explained in the operating instructions ?
If the system does not seem to be operating properly, check as shown on the table below. If none of these checks apply
to the problem, the system may be malfunctioning. Disconnect the power cord immediately and contact your store of
purchase.
Symptom Cause Countermeasure Page
Power does not turn on
when power switch is
pressed. • Power cord is not plugged into a power
outlet.
• Plug the power cord securely into an
outlet.
6
No sound is produced from
the speakers.
• VOLUME control is turned down.
• Headphones are connected.
• Speaker cords are not securely con-
nected.
• Set the control to an appropriate
position.
• Disconnect the headphones.
• Connect securely.
7
7
6
No treble sound is
produced, or the position of
the instruments is unclear. • Speaker polarities (< and >) are
inverted.
• Connect the speaker cords properly. 6
A source other than the
desired one is heard. • Function is not properly set. • Set the desired function using the
FUNCTION button.
7
Hissing sound is heard in
FM programs.
• Antenna direction is poor.
• Signals from the broadcast station are
weak.
• Change the direction of the antenna.
• Install an outdoor antenna. 5
5
Hissing sound is heard in
AM programs.
• Noise from a TV or interference from a
broadcast station.
• Turn the TV off.
• Change the direction of the loop
antenna.
• Install an outdoor antenna.
–
–
5
Humming sound is heard in
AM programs.
• Signals on the power cord are being
modulated by the power source
frequency.
• Insert the power cord in the opposite
direction.
• Install an outdoor antenna.
–
5
Total number of tracks not
displayed when disc is
loaded.
• Disc is loaded upside-down.
• Disc is dirty.
• Disc is not of the specified type. • Reload the disc.
• Clean the disc.
• Replace with a disc of the specified
type.
15
19
–
Nothing happens when
oper-ating buttons are
pressed.
Disc stops in the middle of
a track and will not play
properly. • Disc is loaded upside-down.
• Foreign object on disc tray.
• Disc is dirty.
• Disc is scratched.
• Reload the disc.
• Remove the disc and the foreign
object.
• Clean the disc.
• Replace with an unscratched disc.
15
15
19
–
Sound is broken.
• Dirt, fingerprints, spittle, etc. on disc.
• Disc is scratched.
• Player is in an unstable place and
vibrates strongly.
• Clean the disc.
• Replace with an unscratched disc.
• Place the player in a stable place with
no vibrations.
19
–
–
Humming sound is heard
when disc is played.
• Signals on the power cord are being
modulated by the power source
frequency.
• Insert the power cord in the opposite
direction.
–
• Protector circuit
The DRA-F100 is equipped with a high speed protector circuit.
This circuit protects internal parts from being damaged by strong currents generated in the set should the set be
operated when the speaker terminals are incompletely connected or short-circuited.
If this protector circuit is activated, a relay sound is produced, the output to the speakers is interrupted, and the function
and power LEDs flash to indicate that there is a problem. If this should happen, unplug the power cord, check the
speaker connections, then plug in the power cord and turn the power back on. After several seconds, a relay sound is
heard and the set starts operating properly.
• The set may not operate properly due to such external influences as lightning or static electricity. If this happens, either
turn off the power with the receiver’s SYSTEM power operation switch or unplug the power cord, wait approximately 5
seconds, then plug the power cord back in.
General
Receiver
CD
player