19" LCD Color Monitor HP L1950
1
Service
Service
Service
Horizontal Frequency
24- 83 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
Table Of Contents.......……..............................…........1
Revision List.…........................................……......2
1. Monitor Specification..............................………........3
2. LCD Monitor Description…………………………….......4
3. Operation Instruction…………...............……...........5
3.1. General Instructions...........................…...........5
3.2. Control Button…………….…..............……...............5
3.3 Adjusting the Picture...........................…............6
4. Input/Output Specification............……………............10
4.1. Input Signal Connector............………….................10
4.2. Factory Preset Display Modes......…..................11
5. Panel Specification.....………………..................12
5.1. General Feature…….....………………..................12
5.2. Optical Characteristics………………………………14
6. Block Diagram……...................…………................16
6.1 Software Flow Chart………………………………...16
6.2.Electrical Block Diagram……………..….......18
7. Schematic……………......................................20
7.1 Main Board....……….......................................20
7.2 Power Board.….……....................................24
7.3 Key Board…………………………………………..28
7.4 USB Board…………………………………………29
8.PCB Layout..…….......................................30
8.1. Main Board………........................................30
8.2. Power Board….......................................32
8.3. Key Board………............….......................34
8.4 USB Board…………………………………………35
9. Maintainability……….......................................37
9.1. Equipments and Tools Requirement..............37
9.2. Trouble Shooting……….............................38
9.2.1 Main Board…………..............................38
9.2.2 Power Board………..............................40
9.2.3 Key Board…………..............................42
10 White-Balance, Luminance adjustment...43
11.Mechanical Instructions……………..…...….......45
12. Monitor Exploded View………………..…....….......51
13. BOM List………………………………..……………52
14. Different Parts List.........…………..........................66
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