HP LE1901w Service Manual

19" LCD Color Monitor HP LE1901w
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..............................…………........5
2. LCD Monitor Description…………………………….......6
3. Operation Instruction…………...............……................7
3.1. General Instructions...........................……….............7
3.2. Control Button…………….…..............……................7
3.3 Adjusting the Picture...........................….................8
4. Input/Output Specification............…..………..............12
4.1. Input Signal Connector............…………..................12
4.2. Factory Preset Display Modes......….......................12
5. Panel Specification.....………………...........................13
5.1. General Feature…….....……………….....................13
5.2. Optical Characteristics………………………….……15
5.3 Electrical Characteristics……………….……………..19
6. Block Diagram……...................…………....................22
6.1 Software Flow Chart………………………..…….…...22
6.2. Electrical Block Diagram……………..………….......24
7. Schematic……………..............................................26
7.1. Main Board....………............................................26
7.2. Power Board.….……............................................31
7.3. Key Board.….……................................................33
8. PCB Layout..……......................... ................ ..... ...34
8.1. Main Board………................................................34
8.2. Power Board….....................................................36
8.3. Key Board………............….... .............................38
9. Maintainability……….............................................39
9.1. Equipments and Tools Requirement.....................39
9.2. Trouble Shooting……….......................................40
9.2.1. Main Board…………..........................................40
9.2.2. Power Board………...........................................42
9.2.3. Key Board…………...........................................44
10. White-Balance,Luminance adjustment… ……......45
11.Mechanical Instructions……………..…...……........47
12. Monitor Exploded View………………..…....….....51
13. BOM List………………………………..……………52
14. Different Parts List.........………….........................58

HP LE1901w Specifications

General

3D	No
Pixel pitch	0.2835 x 0.2835 mm
Display diagonal	19 \
Display resolution	1440 x 900 pixels
Vertical scan range	56 - 76 Hz
Horizontal scan range	24 - 83 kHz
Contrast ratio (dynamic)	-
Contrast ratio (typical)	1000:1
Viewing angle, horizontal	160 °
Display brightness (typical)	250 cd/m²
Supported graphics resolutions	832 x 624, 1152 x 870, 1280 x 960, 1024 x 768 (XGA), 1280 x 1024 (SXGA), 640 x 480 (VGA), 800 x 600 (SVGA)
Operating temperature (T-T)	5 - 35 °C
Certification	CE, FCC, CUL, CCIB, CCEE, IT ECO
Product color	Black
Country of origin	China
Plug and Play	Yes
LED indicators	Power
Tilt angle range	-5 - 25 °
Cable lock slot type	Kensington
Panel mounting interface	100 x 100 mm
DVI-D ports quantity	0
Power consumption (standby)	2 W
Power consumption (typical)	29 W
Sustainability certificates	ENERGY STAR
Cables included	VGA

Weight and Dimensions

Depth (without stand)	59 mm
Width (without stand)	446 mm
Height (without stand)	301 mm
Weight (without stand)	4300 g