NAD 7220PE Service Manual

SERVICE
—
MANUAL

NAD 7220PE Specifications

General

Brand	NAD
Model	7220PE
Category	Stereo Receiver
Language	English

Summary

Front and Rear Panel Overview

Rear Panel Connections

Description of all rear panel input/output and grounding terminals.

Front Panel Controls and Indicators

Description of all front panel controls, display, and indicators.

Technical Specifications

Power Amplifier & Preamplifier Specs

Details power output, distortion, and preamplifier performance metrics.

FM Tuner & Physical Specs

Details FM tuner performance and physical dimensions/weight.

Audio Section Alignment Method

Initial Adjustment Procedures

Steps for initial calibration of center voltage and idling current.

Final Adjustment Procedures

Steps for final calibration of center voltage and idling current.

FM Alignment: Oscillator, RF, and IF

Tuning Voltage (Oscillator) Alignment

Procedure to check and adjust tuning voltage for the oscillator.

RF Adjustment (Tracking)

Procedure for aligning RF tracking using test equipment.

IF Adjustment

Procedure for adjusting the Intermediate Frequency (IF) stage.

FM Alignment: Detector and Stereo Decoder

Detector Coarse and Final Adjustments

Procedures for coarse and final detector circuit adjustments.

Autosearch Level and Stereo Decoder Setup

Procedures for autosearch level and stereo decoder/MPX filter setup.

FM Alignment: Separation and MPX Filters

Stereo Separation Optimization

Procedure to optimize stereo separation performance.

MPX Filter Adjustment

Procedure for adjusting the MPX filter for optimal output.

AM Alignment Procedures

Oscillator, IF, and Tracking Adjustments

Procedures for AM OSC, IF, and tracking alignments.

Amplifier PCB Layout and Wiring Diagram

Interconnections Diagram

Amplifier PCB Layout Details

Tuner PCB Layout Details

Tuner Circuit Schematic

Exploded View Assembly Diagram

Packing Diagram and Contents