Daewoo DTX-21G2 User Manual

Caution
: In this Manual, some parts can be changed for improving. their
performance without notice in the parts list. So, if you need the
latest parts information, please refer to PPL(Parts Price List)in
Service Information Center.
Service Manual
COLOR Television
CHASSIS :
Model :
CP-520V
DTX-21G2/21B4/21U7
P/N:TCP520VEF0
Dec. 2006

Daewoo DTX-21G2 Specifications

General

Display Technology	CRT
Screen Size	21 inches
Aspect Ratio	4:3
Tuner	Analog
Inputs	RF, Composite

Summary

Document History

Main Features

Specifications

Details on TV standards, tuner, color system, sound, power, teletext, aerial input, channel coverage, tuning system, screen size, channel indication, program selection, aux terminal, and remote control.

Channel/Frequency Table

List of channels and their corresponding frequencies across different regions like Europe CCIR, France, GB, and East OIRT.

Safety Instruction

X-Ray Radiation Precaution

Precautions regarding X-ray radiation hazards and limits, emphasizing correct voltage checks and replacement tube specifications.

Safety Precaution

General safety warnings about high voltage, handling procedures, fuse replacement, resistor placement, and electrical connections.

Alignment Instructions

Microcontroller Configuration: Service Mode

Steps to enter service mode, display software version, and exit the service menu.

Service Mode Navigation

Explanation of navigation controls within the service mode using remote keys for cycling items and adjusting values.

Microcontroller Configuration: Option Bits

Details on accessing and toggling option bits using Volume +/- and OK keys for configuration.

NVM Default Setting

Procedure to modify NVM data using FACTORY and NVM EDITOR modes for desired values.

TV Set Alignment

Instructions for performing various alignment procedures like G2, White Balance, Focus, Geometry, and AGC.

IC Description

UOC III Series

Overview of the UOC III series IC, its functions, and features like combfilter, teletext, and stereo decoding.

LA42032 Stereo Audio Amplifier

Detailed description of the LA42032 audio amplifier, its features, and pin description.

LA78040 Vertical Amplifier

Features and description of the LA78040 vertical amplifier for deflection systems.

24WC16 - 16 KB EEPROM

Features and pin description of the 24WC16 serial I2C bus EEPROM.

STR - W6754

General description, features, block diagram, pin description, and electrical characteristics of the STR-W6754 regulator.

Circuit Description

Block Diagram

Overall block diagram showing the interconnection of major circuits like Sound Processor, Video Processor, and Micro Controller.

Functional Description of Video Processor

Detailed functional description of the video processor, including vision IF, QSS sound, FM demodulator, and various input selections.

General Description of the TV Sound Processor

Overview of the digital TV sound processor, its DSP capabilities, and pre-defined setups for sound processing.

Functional Description Sound Processor

Functional description of the sound processor, including its concept, digital controller sound part, and demodulator/decoder.

Service Parts List

DTX-21G2FZP-SB

Detailed list of service parts with codes, names, descriptions, and remarks for the DTX-21G2FZP-SB model.

Exploded View

DTX-21G2

Exploded view diagram and parts list for the DTX-21G2 model.

DTX-21B4

Exploded view diagram and parts list for the DTX-21B4 model.

DTX-21U7

Exploded view diagram and parts list for the DTX-21U7 model.

Printed Circuit Board

4859813693(OLD PCB)

Diagram of the old Printed Circuit Board (PCB) layout, showing component placement and connections.

4859816393(NEW PCB)

Diagram of the new Printed Circuit Board (PCB) layout, showing component placement and connections.

Schematic Diagram

CP-520V

Detailed schematic diagram of the CP-520V television, illustrating circuit connections and component functions.