Adepia TGL 2020A, Service Manual, Page: 1 / 55

20” LCD Color Monitor Adepia TGL 2020A
1
Service
Service
Service
Horizontal Frequency
31KHz-82KHz
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.
Table Of Contents.......…….................……...........…........1
Important Safety Notice.………….…..................……......2
Revision List.…........................………................……......3
1.Product Feature..............................………........4
2.LCD Monitor Description…………………………….......5
3.Operation Instruction…………...............……...........6
3.1 General Instructions.......................................…...........6
3.2 Control Buttons………..…….…..............……...............6
3.3 Adjusting the Picture...........................…............8
4.Input/Output Specification............……………............11
4.1 Input Signal Connector......….…..……........…….........11
4.2 Factory Preset Display Modes.................…...............13
4.3 Power Supply Requirement…………………………....13
4.4 Panel Specification..............………………..................14
5.Block Diagram…….…...................…………................17
5.1 Software Flow Chart…………………….……....….......17
5.2 Electrical Block Diagram…………..……..…..….......19
6.Schematic…………….....................................….....21
6.1 Main Board..............................................................21
6.2 Power Board....…………..........……........................26
7.PCB Layout..…………...........……...........................29
7.1 Main Board………..................……....................29
7.2 Power Board…....................……………..................32
7.3 Key Board……….....…….............……….................33
8.Maintainability………............................……….........34
8.1 Equipments and Tools Requirement......……….......34
8.2 Trouble Shooting………………................................34
9.White-Balance, Luminance adjustment.............40
10. Monitor Exploded View……...………………............41
11.BOM List…................……......................….............42
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING