Table Of Contents - HP L1940T Series Service Manual

Table of Contents ------------------------------------------------------------------------------------------------------------------------ 02
Revision List ------------------------------------------------------------------------------------------------------------------------------ 03
1.Monitor Specification ----------------------------------------------------------------------------------------------------------------04
2.LCD Monitor Description ------------------------------------------------------------------------------------------------------------05
3.Operation Instructions ---------------------------------------------------------------------------------------------------------------05
3.1 General Instructions ---------------------------------------------------------------------------------------------------------------05
3.2 Control Button
3.3 Adjusting The Picture --------------------------------------------------------------------------------------------------------------06
4. Input/Output Specification -------------------------------------------------------------------------------------------------------- 09
4.1 Input Signal Connector -----------------------------------------------------------------------------------------------------------09
4.2 Factory Preset Display Modes --------------------------------------------------------------------------------------------------11
4.3 Power Supply Requirements ----------------------------------------------------------------------------------------------------11
5.Panel Specification ---------------------------------------------------------------------------------------------------------------------12
5.1 General Feature --------------------------------------------------------------------------------------------------------------------12
5.2 Optical Characteristics ------------------------------------------------------------------------------------------------------------13
6.Monitor Exploded View -----------------------------------------------------------------------------------------------------------------14
7.Repair Flow Chart
8. Trouble Shooting
9. Block Diagram
10. Schematic ------------------------------------------------------------------------------------------------------------------------------20
10.1Main Board
10.2 Inverter/Power Board
10.3 Key Board
11. PCB Layout -----------------------------------------------------------------------------------------------------------------------------31
11.1 Main Board --------------------------------------------------------------------------------------------------------------------------31
11.2 Inverter/Power Board -------------------------------------------------------------------------------------------------------------32
11.3 Key Board ---------------------------------------------------------------------------------------------------------------------------33
12. Maintainability -------------------------------------------------------------------------------------------------------------------------34
13. White-Balance, Luminance Adjustment
14. Check List after replacing LCD Main board ---------------------------------------------------------------------------------37
14.1 Check white-balance -------------------------------------------------------------------------------------------------------------37
14.2 Steps for writing DDC ------------------------------------------------------------------------------------------------------------37
15. EDID Content --------------------------------------------------------------------------------------------------------------------------52
16. BOM List --------------------------------------------------------------------------------------------------------------------------53～64

Table of Contents

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HP L1940T