Cambridge Audio 640A - Table of Contents

640A SERVICE MANUAL
TABLE OF CONTENTS
Safety Precautions & Important Notes 3
Amplifier Bias Set-up
4
Main Assembly BOM (Silver Unit)
5 – 7
Input & Tone PCB Schematic (Tone Control)
8
Revised: Input & Tone PCB Schematic (Input Select) 9
Input & Tone PCB Layout (Top Side)
10
Input & Tone PCB Layout (Bottom Side)
11
Input & Tone PCB BOM
12
Front Panel Schematics
13
Front Panel PCB Layout (Top Side)
14
Front Panel PCB Layout (Bottom Side)
15
Front Panel PCB BOM
16
Power Amp Schematic (Power Supply)
17
Power Amp Schematic (Protection)
18
Power Amp Schematic (Left Channel)
19
Power Amp Schematic (Right Channel)
20
Power Amp PCB Layout (Top Side)
21
Power Amp PCB Layout (Bottom Side)
22
Power Amp PCB BOM
23 – 25
Speaker Output Schematic
26
Speaker Output PCB Layout (Top Side)
27
Speaker Output PCB Layout (Bottom Side)
28
Speaker Output PCB BOM
29
Mains Input Schematic
30
Mains Input PCB Layout (Top Side)
31
Mains Input PCB Layout (Bottom Side)
32
Mains Input PCB BOM
33
IC Pin Layout Details
34 – 38
Silver / Black Difference BOM
39
Amended Input Circuit Schematic (Jan 2004)
40
Amended Input Circuit Schematic (March 2005)
41