20" LCD Monitor                                                                                                                AOC e2050Sn 
1 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Horizontal Frequency 
      30 - 83kHz 
 
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 
 
 
Table of Contents…………………..…………………..…...1 
Revision  List.…...................................................……......2   
Important Safety Notice.….….............................……......3 
1.Monitor  Specification..............................………............4                           
2.LCD Monitor Description……….…………………….......5 
3.Operation  Instruction.…………...................……...........6 
3.1.General  Instructions....................................…...........6 
3.2.Control Buttons and Connections...............................6 
3.3.OSD  Setting…..........................................................8 
4.Input/Output Specification...............……………….......24 
4.1.Input  Signal  Connector...............………..................24 
4.2.Preset  Display  Modes……..........................24 
4.3.Panel Specification…………..………………………..25 
5.Block  Diagram….........................................................27 
5.1.Main  Board…..….............................................27 
5.2.Power  Board…………..…………………………......28 
 
6.Schematic…………..….........................................29 
6.1.Main Board..…….…...........................................29 
6.2.Power  Board..……….........................................33 
7.PCB  Layout..………..............................................35 
7.1.Main  Board………..…........................................35 
7.2.Power  Board….…..............................................36 
7.3.Key Board………..…..........................................37 
8.Maintainability………............................................38 
8.1.Equipments and Tools Requirement…...............38 
8.2.Trouble  Shooting…..………...............................39 
9.White-Balance,Luminance  Adjustment…............43 
10.Monitor Exploded View……................................45 
11.BOM  List…………..…………………….............46