Cambridge Audio Azur 640C V2 - User Manual

Gallery Court Hankey Place London SE1 4BB UK
Tel: +44 (0)20 7940 2200 Fax: +44 (0)20 7940 2233
640C V2
Issue Date: 30
th
November 2005
Revised Date 1
st
Issue: 20
th
November 2006
_________________________________________________________________________________
SERVICE MANUAL
_________________________________________________________________________________
SPECIFICATIONS:
D/A Converter Dual Wolfson WM8740
24-Bit/192kHz capable
Filter 4 Pole Dual Differential
Double Virtual Earth balanced
Frequency Response (+/-0.1dB) 20Hz – 20kHz
THD @ 1Khz 0dBFs <0.0010%
THD @ 1Khz -10dBFs <0.0005%
THD @ 20Khz 0dBFs <0.0070%
IMD (19/20 kHz) 0dBFs <0.0008%
Linearity @ -90dBFs +/- 0.5dB
Stop band rejection (>24 kHz) > 90dB
S to N ration, A weighted >104dB
Total correlated jitter <160pS
Crosstalk @1kHz <-100dB
Crosstalk @20kHz <-99dB
Output impedance <50 ohms
Dimensions (H x W x D) 70 x 430 x 310 mm
Weight 4.6kg (10.1lbs)
AP19501/2
1
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Summary

Service Manual

Safety Precautions

General Safety Precautions

General safety guidelines and warnings for handling the device.

Laser Safety Precautions

Specific safety measures related to the laser component of the CD player.

Front Panel PCB

Servo PCB

PCB Layout (Top Side)

PCB Layout (Bottom Side)

DAC PCB

Schematic (Issue 6)

Schematic (Issue 7)

Supply Schematic (Issue 6)

Mains PCB

Voltage Select Switch PCB

Schematic

Schematic diagram for the voltage selector switch PCB.

Layout (Top Side)

Layout (Bottom Side)

Assembly BOM

Bill of Materials for the voltage selector PCB assembly.

Cambridge Audio Azur 640C V2 Specifications

General

Type	CD Player
Digital-to-Analog Converter	Wolfson WM8740
DAC	24-bit/192kHz
Frequency Response	20Hz - 20kHz
Signal-to-Noise Ratio	100 dB
Total Harmonic Distortion	<0.003%
Dimensions	430 x 70 x 320 mm