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Marantz
Amplifier
4140
Marantz 4140 Service Manual
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2
Table of Contents
Table of Contents
2
List of Illustrations
2
Service Notes
3
Selector Switch
3
Mode Switch
3
Buffer Amplifier
4
Balance Control
4
Pre-Amplifier
4
Main Amplifier
4
BTL (Balanced Transformerless) Connection
5
Power Supply Unit
5
Trouble Analysis
5
Power Amplifier Adjustment/Power Supply Adjustment/Meter Adjustments
5
Test Equipment Required for Servicing
6
Performance Verification
7
Total Hum and Noise Test
7
Maximum Power Output
7
Harmonic Distortion Test
7
Channel Separation
8
AC Power Control Box Simplified Schematic
8
Amplifier Output Load Box Somplified Schematic
9
Front Panel Adjustment and Component Locations
9
Main Chassis Component Locations
10
Rear Panel Adjustment and Component Locations
10
Tape Moni., Hi Filter Unit Assembly Component Locations
11
Component Locations Diagrams
12
Schematic Diagram
17
Exploded Mechanical Diagram
18
Parts List
19
Technical Specifications
26
4
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Marantz 4140 Specifications
General
Damping Factor
50
Dimensions
416 x 146 x 368mm
Speaker Load Impedance
4 ohms to 16 ohms
Type
Integrated Amplifier
Channel Separation
50dB (1kHz)
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