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NAD 5220 Service Manual

NAD 5220
25 pages
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MANUAL
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5220
COMPACT
nian
PLAYERS

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NAD 5220 Specifications

General IconGeneral
TypeCD Player
Digital-to-Analog Converter16-bit
Frequency Response20Hz - 20kHz
Signal-to-Noise Ratio100 dB
Output Level2V
Dynamic Range95 dB
Channel Separation90 dB
Power Consumption15 W

Summary

Rear Panel Overview

Output Jacks and AC Line Cord

Details the fixed and variable output jacks and the AC power cord connection.

Front Panel Controls and Indicators

Front Panel Functions

Lists and describes the functions of the front panel controls for both models.

Product Specifications

Technical Specifications Summary

Provides detailed technical specifications including type, channels, frequency response, power, and dimensions.

Disassembly Instructions

Top Cover Removal Procedure

Step-by-step guide for removing the top cover of the unit.

Tray Panel Removal Procedure

Instructions for removing the disc tray panel and its associated components.

Front Panel and Mechanism Removal

Front Panel Removal

Details the process of removing the front panel, including screws and connectors.

Mechanism Assembly Removal

Step-by-step instructions for detaching the main mechanism assembly.

Clamper Lever Removal

Specific instructions for removing the clamper lever, including a repair tip.

Disc Tray Removal and Mounting

Disc Tray Removal Steps

Detailed procedure for removing the disc tray from the mechanism.

Disc Tray Mounting Procedure

Instructions on how to correctly mount the disc tray onto the mechanism.

Cautions for Disc Tray Removal

Important warnings and considerations for safely removing the disc tray.

Laser Pickup Removal and Handling

Laser Pickup Removal Procedure

Steps to remove the laser pickup, including short-circuiting precautions.

Cautions on Laser Pickup Replacement

Safety and handling guidelines for replacing the laser pickup.

Disc Table Mounting

Disc Table Mounting Procedure

Instructions for correctly mounting the disc table using spacers.

System Block Diagram

Signal Flow and Component Interconnection

Illustrates the overall system architecture and signal paths between major components.

TC9154AP IC Terminal Functions

TC9154AP Pinout Diagram

Visual representation of the TC9154AP IC pin assignments and internal structure.

TC9154AP Terminal Descriptions

Detailed explanation of each pin's function and connection for the TC9154AP IC.

TD6720N IC Terminal Functions

TD6720N Pin Terminal Description

Lists and describes the function of each terminal for the TD6720N IC.

TD6720N Pinout Diagram

Shows the pin configuration and internal block diagram of the TD6720N IC.

TMP4270N IC Terminal Functions

TMP4270N Pin Name and Function

Details the pin names, input/output types, and functions of the TMP4270N IC.

TMP4270N Internal Block Diagram

Illustrates the internal architecture and signal flow within the TMP4270N IC.

TMP47C420AF IC Terminal Functions

TMP47C420AF Pinout Diagram

Shows the pin configuration and internal block diagram of the TMP47C420AF IC.

TMP47C420AF Pin Description

Lists and describes the function of each pin for the TMP47C420AF IC.

TMP47C420AF IC Pin Details

TMP47C420AF Segment and Common Drivers

Details pins related to LCD segment and common driver outputs.

TMP47C420AF Control and Interface Pins

Describes pins for system control, interface, and other functions.

TMP47C420AF Additional Pin Functions

TMP47C420AF LCD Control and Key Scan

Explains pins for LCD control, sync, mute, and key scan operations.

TMP47C420AF Remote and Timer Functions

Details pins related to remote control input and timer play functionality.

Adjustments: Location and Focus/Tracking

Adjustment Location Overview

Identifies key test points and components for various adjustments.

Focus and Tracking Offset Adjustments

Procedures for focus DC offset, focus balance, and tracking offset adjustments.

Adjustments: Error Signals and CDR

Tracking Error Balance and Analog Output Offset

Procedures for tracking error balance and analog output offset adjustments.

CDR Adjustment Procedure

Steps to adjust the Constant Data Rate (CDR) output level.

Electrical Parts Location (Bottom View - 5220)

Display Board Components

Identifies components on the Display P.C. Board.

Main Board Components

Shows component placement on the Main P.C. Board.

Mechanism and Power Switch Boards

Locates components on the Mechanism and Power Switch P.C. Boards.

Schematic Diagram (5220)

Main Circuit Schematic

Detailed schematic of the main electronic circuits.

Microcomputer and Peripheral ICs

Schematic section for the microcomputer and associated integrated circuits.

Electrical Parts Location (Bottom View - 5240)

Display and Compressor Boards

Identifies components on the Display and Compressor P.C. Boards.

Main Board Components

Shows component placement on the Main P.C. Board.

Mechanism and Power Switch Boards

Locates components on the Mechanism and Power Switch P.C. Boards.

Schematic Diagram (5240)

Main Circuit Schematic

Detailed schematic of the main electronic circuits for the 5240 model.

Microcomputer and Peripheral ICs

Schematic section for the microcomputer and associated integrated circuits.

Mechanism Exploded View

Mechanism Component Identification

Illustrates the assembly of the disc player mechanism with numbered parts.

Cabinet Exploded View

Cabinet Component Identification

Shows the assembly of the player's cabinet with numbered parts.

Parts List - Core Components

Cabinet and Mechanism Parts

Lists part numbers for cabinet and mechanism components.

Electronic Components List

Lists ICs, transistors, and diodes with part numbers.

Parts List - Capacitors and Resistors

Capacitors List

List of capacitors with part numbers, descriptions, and specifications.

Resistors List

List of resistors with part numbers, descriptions, and values.

Parts List - Accessories

Accessories List

List of included accessories such as manuals and cords.

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