TCL LCD20VS, Service Manual

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20’’ LCD TV TCL LCD20VS
1
Service
Service
Service
Horizontal Frequency
31.5- 49 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
R FOR TH
UNIT WHEN S
6. 1. M ai n B oar d
…………………….……….......25
6.2.Power Board
…………………….……….......27
6.3.Tuner Boar d
…………………….……….......30
6.4.Key Board
……………………………….……….......30
6.5.IR Board
………………………………………….......30
6.6.Earphone Board
………………………..……….......31
7. Block Diagram.
…….........................................32
8. Schematic
……………...…………..………………...33
8.1 Main Board
…………………….…………….….......33
8.2.Power Board
…………………….………….......46
8.3 Tuner Board
……..…………………….……….......49
9. Exploded View
………….………………....….......52
10. BOM List
……………….…………………………….53
Table Of Contents.......……..............................…........1
Important Safety Notice.
......................................……......2
Revision
List.…........................................……......3
1. General Specification
..............................………........4
2. Operating
Instructions…………………….……….......5
2.1. The Use Of Remote Control
…….………….…….......5
2.2. To Use the Menu
…...…………………….……….......6
2.3. How to Connect
…….…………………….………......11
2.4. Front Panel Control Knobs
……………….……….....13
3. Input/Output Specification
…………....................…....14
4. Mechanical Instructions
…………………….................16
5. Repair Flow Chart
……………………….…….…….....19
6. PCB Layout
……….………….………………....….......25