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NAD 3400 Service Manual

NAD 3400
18 pages
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SERVICE
MANUAL
~
MONITOR
SERIES
3400
INTEGRATED
AMPLIFIER

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NAD 3400 Specifications

General IconGeneral
BrandNAD
Model3400
CategoryAmplifier
LanguageEnglish

Summary

Service Safety Precautions (UL)

Rear Panel Connections

Rear Panel Connection Descriptions

Details on all rear panel input/output and control connections.

Front Panel Controls

Front Panel Control Descriptions

Explanation of all front panel knobs, switches, and indicators.

Specifications

Power Amplifier Section Specifications

Technical details for the power amplifier stage, including output power and distortion.

Bridged (Monophonic) Mode Specifications

Technical details for the amplifier operating in bridged monophonic mode.

Preamplifier Section Specifications

Output Specifications

Controls

Control Functions

Description of Treble, Bass, EQ, Infrasonic Filter, and Audio Muting functions.

Physical Specifications

Physical and Power Specifications

Dimensions, weight, and power consumption details of the amplifier.

Remote Control Transmitter

Main Amplifier Alignment

Main Amplifier Adjustment Procedures

Steps for checking center voltage and adjusting idle current in the main amplifier.

Preamplifier Alignment

Preamplifier Channel Balance Adjustment

Procedure for adjusting channel balance for the preamplifier stage.

Amplifier Schematic Diagram

PCB Layouts

Input/Output PCB Layout

Layout diagram for the input/output printed circuit board assembly.

Main/Control/Supply PCB Layout

Layout diagram for the main, control, and supply printed circuit board assembly.

Other PCB Layouts

Layouts for mains input, headphone, power, and bridge switch assemblies.

Selector and Communication PCB Layouts

Selector PCB Layout

Layout diagram for the selector printed circuit board assembly.

Microcontroller PCB Layout

Layout diagram for the µCOM (microcontroller) printed circuit board assembly.

Tactile Switch PCB Layout

Layout diagram for the tactile switch printed circuit board assembly.

Wiring Diagram

Wiring Connections Overview

Diagram illustrating the wiring connections between major internal assemblies and external components.

Exploded View

Exploded View Parts List

Detailed list of parts shown in the exploded view diagram with part numbers.

Electrical Parts List

Main/Control/Supply PCB Parts

List of electrical components for the main, control, and supply PCB assembly.

Input/Output PCB Parts

List of electrical components for the input/output PCB assembly.

Selector PCB Parts

List of electrical components for the selector PCB assembly.

Chassis-Mounted Components

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