Cambridge Audio 540P 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 and is switched on.

There is no sound

Make sure the unit is plugged in.

Check that your turntable is properly connected. Check that your speakers are properly connected.

Check all connections are secure and correct amplifier input is selected. Ensure correct cartridge type has been selected (MM or MC).

There is no sound on one channel

Check that your speakers are properly connected.

Check all connections are secure.

There is a loud buzz or hum

Check turntable or tone arm for ground and connection lead fault.

Ensure no connections are loose or defective.

Ensure that your turntable is not too close to the amplifier.

Volume is too loud/quiet

Check cartridge type matches input type. If a MC cartridge is connected through the MM inputs, volume will be very quiet (and vica versa). Note that it is possible to obtain high level MC cartridges which are designed for an MM input.

SPECIFICATIONS

	540P	640P	640P
		(MM)	(MC)
Max power consumption	5W	5W	5W
Gain @ 1kHz	39dB	39dB	55dB
Nominal output	300mV	300mV	300mV
Sensitivity for	3.35mV	3.35mV	0.5mV
nominal output
THD 20Hz-20kHz	<0.009%	<0.005%	<0.002%
RIAA curve accuracy	<+/-0.65dB	<+/-0.3dB	<+/-0.3dB
	25hz-20kHz	20Hz-50kHz	20Hz-50kHz
		(subsonic filter off)
Signal to noise ratio	>85dB	>86dB	>72dB
using Audio Precision RIAA-1
with grounded inputs
Crosstalk @ 20kHz	>76dB	>83dB	>69dB
Dimensions (HxWxD)
mm	46 x 215 x 133	46 x 215 x 133	46 x 215 x 133
inches	1.8 x 8.5 x 5.2	1.8 x 8.5 x 5.2	1.8 x 8.5 x 5.2
Weight
kg	0.8	0.9	0.9
lbs	1.8	2	2

6Azur phono pre-amplifier