EasyManua.ls Logo

Qls 21M62US (CHASSIS: NX56-LA) User Manual

Default Icon
78 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
SERVICE MANUAL
MODEL: 21M62US
CHASSIS: NX56-LA
Question and Answer IconNeed help?

Do you have a question about the Qls 21M62US (CHASSIS: NX56-LA) and is the answer not in the manual?

Qls 21M62US (CHASSIS: NX56-LA) Specifications

General IconGeneral
BrandQls
Model21M62US (CHASSIS: NX56-LA)
CategoryTV
LanguageEnglish

Summary

Service Manual Introduction and Safety

Introduction and Model Information

Manual title, model (21M62US), and chassis (NX56-LA).

Safety Precautions and Warnings

Crucial safety warnings on electrical shock and radiation exposure.

Operation and Protection Guidelines

Safe usage, personal safety, and protection advice for the set.

Service and Modification Safety

Notes for safe servicing, modification, and handling of hazards.

Product Specifications and IC Data

Product Functional Specification

Overview of UOC-TOP-64 N1 series signal processor capabilities.

Model Specific Specifications

Detailed technical specifications for NX56-LA models (29185, 21F5US).

UOC-TOP-64 N1 IC Features

General description and key features of the signal processor IC.

IC Quick Reference Data

Summary of electrical parameters for the UOC-TOP-64 N1 series.

IC Block Diagram and Pinning

Visual representation and pin assignments of the UOC-TOP-64 N1 IC.

Alignment Procedures

NX56-LA Chassis Alignment Guide

Comprehensive guide for performing alignment on the NX56-LA chassis.

P-Mode Operation for Alignment

Instructions on accessing and navigating the P-Mode for adjustments.

Alignment Procedure Steps

Visual flowchart outlining the sequence of alignment steps.

Specific Adjustment Procedures

Detailed steps for B+ Voltages, RF AGC, Screen/Focus, White Balance, Geometry, Parameters.

Technical Circuit Descriptions

RF and Signal Processing Sections

Explanation of RF, tuner, and IF/video/audio signal processing.

Scanning and CRT Circuitry

Description of Horizontal, Vertical scanning, and CRT circuits.

Audio Amplification and Power Supply

Circuitry for audio amplification and the main power supply.

Component Datasheets

STV8172A Deflection Booster Datasheet

Technical data, ratings, and application hints for the deflection IC.

TDA7266SA Audio Amplifier Datasheet

Technical data, ratings, and application hints for the audio IC.

Application Hints for Deflection ICs

Guidance on using deflection booster ICs in DC and AC coupled applications.

Troubleshooting Guide

Fuse Blown and Raster Troubleshooting

Diagnostic steps for blown fuse and no raster abnormal conditions.

Sound and Vertical Scan Issues

Troubleshooting flowcharts for no sound and vertical scanning problems.

Picture and Display Issues

Diagnostic steps for no picture and no vertical scanning issues.

Parts List and Assembly

Bill of Materials (BOM)

Comprehensive list of all components with part numbers and descriptions.

Exploded View Diagram

Visual breakdown of the TV assembly for parts identification.

Related product manuals