Cambridge Audio 740C azur, Custom installation C.I. use, Troubleshooting, There is no power

Custom installation (C.I.) use

The 740C features a Control Bus input/output that IR Emitter		Control Bus
allow un-modulated remote control commands
(positive logic, TTL level) to be received electrically
by the unit and looped to another unit if desired.
These control commands are typically generated	In	In	Out
by custom installation (multi-room) systems or

remote IR receiver systems. The Control Bus sockets are colour-coded orange.

An IR Emitter Input is also provided that allows modulated IR remote control commands to be received electrically by the unit. Commands on this input operate the unit only and are not looped out demodulated on the Control Bus Output. This feature is useful for multi-room systems (such as the Cambridge Audio Incognito multi-room system) which feature routed I.R. emitter outputs. Instead of using window emitters stuck over the CD players front panel IR receiver, a mono 3.5mm mini- jack to 3.5mm mini-jack lead can be used for a more reliable electrical connection.

In addition the units feature 'direct' IR/Control codes as well as toggle codes for some of their features to simplify programming custom installation systems. Special direct On/Off and Mute commands can be accessed on the supplied remote control for teaching into C.I. systems as follows:

1.Press and hold the Standby button. The remote first generates it's standby (toggle) command. Keep the button held down, after 12 seconds a CD player “On” command will be generated. If the button is kept held down for a further 12 seconds, a CD player “Off” command is generated.

A full code table for this product is available on the Cambridge Audio website at www.cambridge-audio.com.

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.

The player will not read the disc

Check the disc is not loaded upside down.

Check that the disc is not too scratched or dirty.

There is no sound

Ensure that the amplifier is set correctly.

Check that the interconnects are inserted correctly.

The disc is skipping

Check that the disc is not too scratched or dirty.

Ensure the player is on a firm surface and not subject to vibrations.

There is a hum coming from the speaker

Ensure that all cable connections are secure.

The remote handset will not function

Check that the batteries have not expired.

Ensure that nothing is blocking the remote sensor.

	azur	740C
Technical specifications
D/A converters	Dual Wolfson
	WM8740 24 bit DACs
Digital filter	Analog Devices Black Fin
	ADSP-BF532 32 bit DSP
	Performing ATFTM
	upsampling to 24 bit 384kHz
Analog filter	2 Pole Dual Differential Bessel
	Double Virtual Earth Balanced
Frequency response	20Hz to 20kHz (+/-0.1dB)
THD @ 1kHz 0dBFs	< 0.0008%
THD @ 1kHz -10dBFs	< 0.0005%
THD @ 20kHz 0dBFs	< 0.001%
IMD (19/20kHz) 0dBFs	< 0.0006%
Linearity @ -90dBFs	+/- 0.5dB
Stopband rejection (>24kHz)	> 115dB
S/N ratio, A weighted	> 113dB
Total correlated jitter	< 130pS
Crosstalk @1kHz	< -130dB
Crosstalk @20kHz	< -110dB
Output impedance	< 50 ohms
Digital input word widths supported
	16 - 24 bit
Digital output word widths supported
	16, 20, 24 bit
Digital input sampling frequencies supported
	32kHz, 44.1kHz, 48kHz, 88.2kHz,
	96kHz, 176.4kHz, 192kHz
Digital output sampling frequencies supported
	32kHz - 192kHz pass through
	(Including 44.1kHz for CD)
	48kHz, 96kHz, 192kHz upsampled
Audio output upsampling	Fixed 24 bit, 384kHz
Dimensions - H x W x D	115 x 430 x 315mm
	(4.5 x 16.9 x 12.4”)
Weight	6.4Kg (14.1Lbs)

ENGLISH

11