Service Manuals, User Guides, Schematic Diagrams or docs for : . Rare and Ancient Equipment CAMBRIDGE Audio Azur 640C hfe_cambridge_audio_azur_640c_service
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640C
Issue Date: 22nd December 2004
________________________________________________________________________
SERVICE MANUAL
________________________________________________________________________
SPECIFICATIONS:
D/A Converter Wolfson
WM8740
24-Bit/192kHz
Capable
Freq response (-0.5dB) 10Hz to 20kHz
THD <-92dB
Dynamic Range <105dB
Channel Separation >75dB
Jitter (correlated) <260pS
Digital Outputs Opt and Coax
Dimension (mm) (H x W x D) 70 x 430 x 310
Weight (kg) 4.6
AP14839/2
Gallery Court Hankey Place London SE1 4BB UK
Tel: +44 (0)20 7940 2200 Fax: +44 (0)20 7940 2233 1
640C SERVICE MANUAL
TABLE OF CONTENTS
Safety Precautions & Important Notes 3
Laser Safety Precautions 4
Exploded Assembly Diagram 5
Main Assembly BOM (Silver Unit) 6-8
Front Panel PCB Schematic 9
Front Panel PCB Layout (Top Side) 10
Front Panel PCB Layout (Bottom Side) 11
Front Panel PCB BOM (Silver Unit) 12/13
Servo PCB Schematic 14
Servo PCB Schematic (Power Supply) 15
Servo PCB Layout (Top Side) 16
Servo PCB Layout (Bottom Side) 17
Servo PCB BOM 18/19
DAC PCB Schematic 20
DAC PCB Layout (Top Side) 21
DAC PCB Layout (Bottom Side) 22
DAC PCB BOM 23
Mains Input PCB Schematic 24
Mains Input PCB Layout (Top Side) 25
Mains Input PCB Layout (Bottom Side) 26
Mains Input PCB BOM 27
IC Pin Layout Details 28-33
Silver / Black Differences BOM 34
2
SAFETY PRECAUTIONS & IMPORTANT NOTES
1.Check that the rear of the product indicates the correct supply voltage
for you area.
2. The lighting flash with the arrowhead within an equilateral
triangle is intended to alert the user or service agent to the
presence of dangerous voltages within the product enclosure
that may be of sufficient magnitude to constitute a risk of
electric shock to persons.
3. The exclamation point within an equilateral triangle is
intended to alert the user or service agent to the presence of
important operating and maintenance (Servicing) instructions
in the literature accompanying the appliance.
4. This product complies with EEC Low Voltage (73/23/EEC) and
Electromagnetic Compatibility (89/336/EEC) Directives when used and
serviced in accordance with this manual. For continued compliance all
components marked safety and EMC critical must only be replaced by
Cambridge Audio approved parts.
5. Any unauthorised design alterations or additions will void the
manufacturer's warranty; furthermore the manufacturer cannot accept
responsibility for personal injury or property damage resulting therefrom.
6. When servicing, care should be taken to observe the original routing
and dressing of the leads and it should be confirmed that they have been
returned to normal after re-assembly.
Notes on chip component replacement
Never reuse a component that has been removed from a PCB
Notice that the minus side of a tantalum capacitor may be damaged by heat
COPYRIGHT NOTICE.
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