Crown Audio Troubleshooting, CP660 Power Amplifier, page, CONDITION Normal operation

CP660 Power Amplifier

5 Troubleshooting

CONDITION: Normal operation.

POSSIBLE REASON:

• This is normal operation for your amp.

CONDITION: No power to the amplifier.

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.

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.

OR

• 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.

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.

KEY

Note: For further assistance with trou- bleshooting your amplifier, consult the Crown Amplifier Application Guide, available from the Crown website at www.crownaudio.com, or contact the Crown Technical Support Group.

page 12 Operation Manual