Crown cp660 Manuale Utente
CP660 Power Amplifi er
Operation Manual
page 12
5 Troubleshooting
KEY
Note: For further assistance with trou-
bleshooting your amplifi er, consult the
Crown Amplifi er Application Guide,
available from the Crown website at
www.crownaudio.com, or contact the
Crown Technical Support Group.
bleshooting your amplifi er, consult the
Crown Amplifi er Application Guide,
available from the Crown website at
www.crownaudio.com, or contact the
Crown Technical Support Group.
CONDITION: Normal operation.
POSSIBLE REASON:
• This is normal operation for your amp.
CONDITION: No power to the
amplifi er.
amplifi er.
POSSIBLE REASON:
• The amplifi er’s “power” switch is off.
• The amplifi er is not plugged into the
power receptacle.
• The amplifi er’s high-voltage power supply
fuse has blown. Fuse NOT user-replace-
able. Return amp to Crown or an
authorized Crown Service Center for
servicing.
able. Return amp to Crown or an
authorized Crown Service Center for
servicing.
CONDITION: No sound.
POSSIBLE REASON:
• The amplifi er has just been turned on and
is still in the 4-second turn-on delay.
• No input signal.
• Input signal level is very low.
• Level controls are turned down.
• Speakers
not
connected.
CONDITION: Distorted sound.
POSSIBLE REASON:
• Input signal level is too high. Turn down
your amplifi er level controls. NOTE: Your
amplifi er should never be operated at
a level which causes the Clip LEDs to
illuminate constantly.
amplifi er should never be operated at
a level which causes the Clip LEDs to
illuminate constantly.
• Amplifer is too hot. Turn down input
signal level to allow ampifi er to return
to normal operating temperature. Check
speaker loads for short-circuits or too low
impedance level.
to normal operating temperature. Check
speaker loads for short-circuits or too low
impedance level.
OR