Cambridge Audio 640T Troubleshooting, Specifications, There is no power, There is no sound

TROUBLESHOOTING

There is no power

Ensure the AC power cord is connected securely.

Ensure the plug is fully inserted into the wall socket and is switched on. Check fuse in the mains plug or adaptor.

There is no sound

Ensure that the amplifier is set correctly.

Check that the interconnects are inserted correctly.

The sound is distorted or garbled

Check aerial connections and placements

There is a hum coming from the speaker

Ensure that all cable connections are secure.

There is unwanted background noise and interference

Move the tuner away from other electrical equipment that is likely to cause interference

The remote handset will not function

Check that the batteries have not expired.

Ensure that nothing is blocking the remote sensor.

SPECIFICATIONS

Sample Rate	48kHz
Frequency Range	VHF (87MHz to 108MHz) Band 2
	DAB (174MHz to 240MHz) Band 3
	DAB (1452MHz to 1491MHz) L-Band
Aerial input impedance	50 ohms
Sensitivity	-97dBm typical
Signal to noise	105dB typical (DAB)
	58dB typical (FM)
Frequency response	20-20KHz+0.1,-0.3 (NCT at Flat, DAB)
	20-15KHz+0.1,-0.5 (NCT at Flat, FM)
Distortion	<0.005%, 1KHz 2vrms o/p, DAB
	<0.15%, 1KHz 50KHz deviation, FM
Stereo Separation	>60dB, 20Hz-20KHz, DAB
	>40dB, 1KHz, FM
Input Voltage	220-240V AC~50Hz
	110V-120V AC~60Hz
	(depending on model)
Maximum Power Consumption	12W
Standby Power Consumption	7W
Dimensions (mm) (H x W x D)	70 x 430 x 305
Weight (kg)	3.9

10azur DAB/FM tuner