Asus VB191 Series Service Manual

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19" LCD Color Monitor ASUS VB191T&S
1
Service
Service
Service
Horizontal Frequency
30-82 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.
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 Button……………..…..............……...............6
3.3.OSD Menu…………….…...........................…............7
4.Input/Output Specification............………….…............11
4.1.Input Signal Connector............…………................11
4.2.Power Supply Requirements....................................12
4.3.Factory Preset Display Modes……..........................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...……....................................31
6.3.Audio Board...……....................................33
7.PCB Layout..………….......................................34
7.1.Main Board………........................................34
7.2.Power Board….......................................37
7.3.Audio Board….......................................39
7.4.Key Board…………….....................................40
8.Maintainability……….......................................41
8.1.Equipments and Tools Requirement...............41
8.2.Trouble Shooting…………..............................42
9.White-Balance, Luminance adjustment.............48
10.Monitor Exploded View….…..…….…............50
11.BOM List…………………………………............51
12.Different Parts List………………...……............77
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
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Summary of Contents

Page 1 - Service

19" LCD Color Monitor ASUS VB191T&S 1Service Service Service

Page 2 - Revision List

19" LCD Color Monitor ASUS VB191T&S 10

Page 3 - Important Safety Notice

19" LCD Color Monitor ASUS VB191T&S 114. Input/Output Specification 4.1 Input Signal Con

Page 4 - 1. Monitor Specifications

19" LCD Color Monitor ASUS VB191T&S 124.2 Power Supply Requirements A/C Line voltage ran

Page 5 - 2. LCD Monitor Description

19" LCD Color Monitor ASUS VB191T&S 134.3 Factory Preset Display Modes

Page 6 - 3. Operating Instructions

19" LCD Color Monitor ASUS VB191T&S 14 4.4 Panel Specification 4.4.1 Features _ 19”SXG

Page 7 - 3.3 OSD Menu

19" LCD Color Monitor ASUS VB191T&S 154.4.3 Optical Characteristics

Page 8

19" LCD Color Monitor ASUS VB191T&S 164.4.4 Electrical Characteristics (1) TFT-LCD (2)

Page 9

19" LCD Color Monitor ASUS VB191T&S 175. Block Diagram 5.1 Software Flow Chat 12NY5YN10Y

Page 10

19" LCD Color Monitor ASUS VB191T&S 18 1) MCU initialize. 2) Is the EP

Page 11

19" LCD Color Monitor ASUS VB191T&S 195.2 Electrical Block Diagram 5.2.1 Main Board

Page 12

19" LCD Color Monitor ASUS VB191T&S 2Revision List Version Release Date Revision Histo

Page 13

19" LCD Color Monitor ASUS VB191T&S 205.2.2 Inverter/Power Board

Page 14 - 4.4 Panel Specification

19" LCD Color Monitor ASUS VB191T&S 21

Page 15

19" LCD Color Monitor ASUS VB191T&S 22

Page 16 - (2) Backlight

19" LCD Color Monitor ASUS VB191T&S 23

Page 17 - 5. Block Diagram

19" LCD Color Monitor ASUS VB191T&S 24

Page 18

19" LCD Color Monitor ASUS VB191T&S 25

Page 19 - 5.2.1 Main Board

19" LCD Color Monitor ASUS VB191T&S 26

Page 20 - 5.2.2 Inverter/Power Board

19" LCD Color Monitor ASUS VB191T&S 27

Page 21 - TSUM56AHK SCHEMATIC

19" LCD Color Monitor ASUS VB191T&S 28

Page 22 - 715G2571-1-2

19" LCD Color Monitor ASUS VB191T&S 29

Page 23

19" LCD Color Monitor ASUS VB191T&S 3Important Safety Notice Proper service and repair

Page 24 - TSUM56AWHK-LF

19" LCD Color Monitor ASUS VB191T&S 30

Page 25 - 5.PANEL INTERFACE

19" LCD Color Monitor ASUS VB191T&S 31

Page 26

19" LCD Color Monitor ASUS VB191T&S 32

Page 27 - The type of R712 is 0603

19" LCD Color Monitor ASUS VB191T&S 33

Page 28 - 715G2571 1 2

19" LCD Color Monitor ASUS VB191T&S 34

Page 29 - 2 can be swapped

19" LCD Color Monitor ASUS VB191T&S 35

Page 30

19" LCD Color Monitor ASUS VB191T&S 36

Page 31 - 6.2 Power Board

19" LCD Color Monitor ASUS VB191T&S 37

Page 32 - 715G2538-1

19" LCD Color Monitor ASUS VB191T&S 38

Page 33 - 6.3 Audio Board

19" LCD Color Monitor ASUS VB191T&S 39

Page 34 - 7. PCB Layout

19" LCD Color Monitor ASUS VB191T&S 41. Monitor Specifications LCD Panel Driving system

Page 35

19" LCD Color Monitor ASUS VB191T&S 40

Page 36

19" LCD Color Monitor ASUS VB191T&S 41

Page 37 - 7.2 Power Board

19" LCD Color Monitor ASUS VB191T&S 42

Page 38

19" LCD Color Monitor ASUS VB191T&S 43

Page 39 - 715G2098-1ASU

19" LCD Color Monitor ASUS VB191T&S 44

Page 40 - 715G2546-1

19" LCD Color Monitor ASUS VB191T&S 45

Page 41 - 8. Maintainability

19" LCD Color Monitor ASUS VB191T&S 46

Page 42 - 8.2.1 Main Board

19" LCD Color Monitor ASUS VB191T&S 47

Page 43

19" LCD Color Monitor ASUS VB191T&S 48

Page 44

19" LCD Color Monitor ASUS VB191T&S 49

Page 45 - 8.2.2 Power/Inverter Board

19" LCD Color Monitor ASUS VB191T&S 52. LCD Monitor Description The LCD monitor will con

Page 46

19" LCD Color Monitor ASUS VB191T&S 50

Page 47 - 8.2.3 Key Board

19" LCD Color Monitor ASUS VB191T&S 51

Page 48

19" LCD Color Monitor ASUS VB191T&S 52

Page 49

19" LCD Color Monitor ASUS VB191T&S 53

Page 50 - 10. Monitor Exploded View

19" LCD Color Monitor ASUS VB191T&S 54

Page 51 - 11. BOM List

19" LCD Color Monitor ASUS VB191T&S 55

Page 52

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19" LCD Color Monitor ASUS VB191T&S 57

Page 54

19" LCD Color Monitor ASUS VB191T&S 58

Page 55

19" LCD Color Monitor ASUS VB191T&S 59

Page 56

19" LCD Color Monitor ASUS VB191T&S 63. Operating Instructions 3.1 General Instructions

Page 57

19" LCD Color Monitor ASUS VB191T&S 60

Page 58

19" LCD Color Monitor ASUS VB191T&S 61

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19" LCD Color Monitor ASUS VB191T&S 67

Page 65 - For VB191S

19" LCD Color Monitor ASUS VB191T&S 68

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19" LCD Color Monitor ASUS VB191T&S 73.2.2 Key Function 3.3 OSD Menu 3.3.1 How to Recon

Page 68

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19" LCD Color Monitor ASUS VB191T&S 78

Page 77 - 12. Different Parts List

19" LCD Color Monitor ASUS VB191T&S 79

Page 78

19" LCD Color Monitor ASUS VB191T&S 8 3.3.2 OSD Function Introduction

Page 79

19" LCD Color Monitor ASUS VB191T&S 80

Page 80

19" LCD Color Monitor ASUS VB191T&S 81

Page 81 - For VB191S

19" LCD Color Monitor ASUS VB191T&S 82

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19" LCD Color Monitor ASUS VB191T&S 9

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