TCL LCD-27VSE User Manual

27’’ LCD TV Color Monitor TCL LCD-27VSE
1
Service
Service
Service
Horizontal Frequency
31.5-60 kHz
TABLE OF CONTENTS
Description Page Description Page
SAFETY NOTICE
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE
CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
8.1 Main Board.……….......................................60
8.2 Tuner Board……………………………………..62
8.3 Power Board……..……..............................64
8.4 Key Board…...................................67
8.5 IR Board …................….......................67
8.6 DC-DC Board....…………...............................68
8.7 Earphone Board..…….....…..........................69
9. Block Diagram.…….........................................70
9.1 Main Board.………………………………..….70
9.2 Power Board…..…....………………….......71
9.3 Exploded View..……….....................…..72
10. Schematic Diagram………………………...73
10.1 Main Board………..………………………..73
10.2 Power Board.....…...................................85
10.3 Tuner Board...…….......................................87
10.4 Key Board……………….………………….90
10.5 Ear
p
hone Board...…….................................91
Table Of Contents.......……..............................…........1
Revision List.…........................................……......2
1. Monitor Specification..............................………........3
2. Operating Instructions…………………….……….......4
2.1 The Use Of Remote Control..……………...................4
2.2 The Use Of Teletext……..........…...........…...........5
2.3 Front Panel Control Knobs.…............……...............6
2.4 OSD Operations.………........................…............7
2.5 How To Connect ……..............……………............14
3 Input/Output Specification…………..........................17
3.1 Input Signal Connector……..........................17
3.2 RGB Input Signal Timing.....……......................18
4. Mechanical Instructions…………………..................19
5. Repair Flow Chart.……………………………….....24
6. White Balance Luminance Adjustment….…........28
7.BOM List..…………………………....….…….....32
8. PCB Layout.………………………………....….......60

TCL LCD-27VSE Specifications

General

Screen Size	27 inches
Display Technology	LCD
Aspect Ratio	16:9
Sound Output	10W x 2
Resolution	1366 x 768
Input Ports	HDMI, VGA, Component, Composite

Summary

Safety Information

General Safety Precautions

Important safety warnings for servicing the TV chassis and components.

Isolation Transformer Caution

Specific safety instruction regarding the use of isolation transformers during servicing.

1. Monitor Specifications

Panel Specifications

Detailed technical specifications for the LCD panel, including type, resolution, and viewing angles.

2. Operations Instructions

Remote Control Functions

Explanation of the functions and operations of the TV's remote control buttons.

OSD Picture Adjustments

OSD Audio Adjustments

2.5 How To Connect

AV Input Connections Overview

3. Input/Output Specification

VGA Connector Pinout

RGB Signal Timing Specifications

5. Repair Flow Chart

Display Fault Troubleshooting

Flow chart for diagnosing and resolving display-related issues.

Other Display Fault Diagnosis

Flow chart for diagnosing other abnormal display conditions.

LED and Keyboard Fault Diagnosis

Troubleshooting guides for LED indicators and keyboard malfunctions.

Key Board Fault Diagnosis Details

Specific troubleshooting steps for problems related to the key board.

6. White Balance, Luminance Adjustment

Factory Adjustment Setup

Preparing instruments and entering the factory adjustment mode for calibration.

PC Mode White Balance Calibration

Procedure for calibrating white balance and color temperature in PC mode.

AV Mode White Balance Calibration

Procedure for calibrating white balance for AV/Component/HDMI inputs.

White Color Temperature Standards

9. Block Diagram

Main Board Block Diagram

High-level functional block diagram of the main TV board.

Power Board Block Diagram

High-level functional block diagram of the power supply unit.

Exploded View of Components

10. Schematic Diagram

Main Board Circuit Schematic

Detailed circuit diagram for the main TV control board.

Input Signal Schematics

DDR Memory Interface Schematic

MCU and Interface Schematics

MCU and Interface Schematics (Part 2)

HDMI and Audio Interface Schematics

Video Decoder and Interface Schematics

Audio Amplifier Schematics

Power Board Schematics (Part 1)

Detailed circuit diagrams for the main power supply board.

Power Board Schematics (Part 2)

Further circuit details for the power supply unit, including voltage regulators.

10.2 Power Board

Schematic diagram of the main power supply board.

DC-DC Converter Schematic

10.3 Tuner Board

AV Input Circuit Schematics

Audio IC Schematics