EasyManua.ls Logo

HP LE1851w

HP LE1851w
53 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Loading...
18.5" LCD Color Monitor HP LE1851w
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......…..................10
5. Panel Specification.....………………..................11
5.1. General Feature…….....………………..................11
5.2. Optical Characteristics………………………………11
5.3 Parameter guide line for CCFL Inverter……………..13
6. Block Diagram……...................…………................15
6.1 Software Flow Chart………………………………...15
6.2.Electrical Block Diagram……………..….......17
7. Schematic……………......................................19
7.1 Main Board....……….......................................19
7.2 Power Board.….……....................................24
7.3 Key Board…………………………………………..26
8.PCB Layout..…….................................. ........ ..... ...27
8.1. Main Board………........................................27
8.2. Power Board….......................................28
8.3. Key Board………............….......................30
9. Maintainability……….......................................31
9.1. Equipments and Tools Requirement..............31
9.2. Trouble Shooting……….............................32
9.2.1 Main Board…………..............................32
9.2.2 Power Board………..............................34
9.2.3 Key Board…………..............................36
10 White-Balance, Luminance adjustment...37
11.Mechanical Instructions……………..…...….......39
12. Monitor Exploded View………………..…....….......42
13. BOM List………………………………..……………43
14. Different Parts List.........…………..........................53
Question and Answer IconNeed help?

Do you have a question about the HP LE1851w and is the answer not in the manual?

HP LE1851w Specifications

General IconGeneral
3DNo
Pixel pitch0.3 x 0.3 mm
Aspect ratio16:9
Display diagonal18.5 \
Display resolution1366 x 768 pixels
Viewing angle, vertical160 °
Contrast ratio (typical)1000:1
Display number of colors-
Display brightness (typical)250 cd/m²
Supported graphics resolutions720 x 400, 832 x 624, 1024 x 768 (XGA), 1280 x 720 (HD 720), 1360 x 768 (WXGA), 640 x 480 (VGA), 800 x 600 (SVGA)
Package depth140 mm
Package width512 mm
Package height420 mm
Package weight5100 g
Product colorBlack
Country of originChina
Market positioningBusiness
Plug and PlayYes
LED indicatorsPower
Tilt angle range-5 - 25 °
Panel mounting interface100 x 100 mm
Storage temperature (T-T)20 - 60 °C
Operating temperature (T-T)5 - 35 °C
Storage relative humidity (H-H)5 - 95 %
Operating relative humidity (H-H)20 - 80 %
AC input voltage100 - 240 V
AC input frequency50 - 60 Hz
Power consumption (off)1 W
Power consumption (standby)2 W
Power consumption (typical)31 W
Dimensions (W x D x H) (imperial)17.6 x 2.3 x 10.6 \
DVI-D ports quantity0
Weight and Dimensions IconWeight and Dimensions
Depth (with stand)190 mm
Height (with stand)341 mm
Depth (without stand)58 mm
Width (without stand)446 mm
Height (without stand)269 mm
Weight (without stand)3800 g

Summary

Safety Precautions

General Safety Warnings

Important safety information and warnings for servicing electronic equipment.

Isolation Transformer Warning

Caution regarding the use of an isolation transformer for servicing this unit.

Revision History

Service Manual Updates

Details of changes and revisions made to the service manual over time.

Monitor Specifications

Display and Physical Characteristics

Technical specifications including screen size, resolution, and physical dimensions.

Environmental and Power Requirements

Operating conditions, power source, and consumption details for the monitor.

LCD Monitor Description

System Architecture Overview

Description of the monitor's main components and their functional relationships.

Operation Instructions

General Usage and Navigation

Instructions for powering on and navigating the On-Screen Display (OSD) menu.

Control Button Functions

Explanation of the function of each physical button and LED indicator on the monitor.

Picture Adjustment Settings

Guidance on adjusting image quality parameters such as brightness and contrast.

OSD Menu Configuration Options

Detailed list and explanation of available OSD menu settings for image and system control.

InputOutput Specifications

Video Signal Input Details

Information on the D-SUB connector pinout and supported display modes.

Factory Preset Display Modes

List of default video resolutions and their corresponding horizontal/vertical frequencies.

Panel Specifications

General Panel Features

Key characteristics of the LCD panel, including pixel pitch and color depth.

Optical Characteristics

Performance metrics such as color chromaticity, contrast ratio, and viewing angles.

CCFL Inverter Parameters

Parameter guidelines for the CCFL inverter used in the backlight system.

System Block Diagrams

Software Flow Chart

Visual representation of the monitor's internal software operational flow.

Electrical Diagram - Scalar Board

Schematic detailing the electrical components and connections of the scalar board.

Circuit Schematics

Main Board Schematic

Detailed circuit diagram illustrating the main board's components and circuitry.

PCB Layouts

Main Board Component Placement

Diagram showing the physical layout and placement of components on the main board.

Power Board Component Placement

Diagram showing the physical layout and placement of components on the power board.

Key Board Component Placement

Diagram showing the physical layout and placement of components on the key board.

Maintainability and Troubleshooting

Required Tools and Equipment

List of essential tools and equipment required for servicing the monitor.

Troubleshooting by Component

Diagnostic procedures for common issues related to the main board, power board, and key board.

Color and Brightness Calibration

White Balance and Luminance Adjustment

Procedure for calibrating color temperature and luminance using specialized equipment.

Mechanical Disassembly

Step-by-step Disassembly Guide

Instructions for disassembling the monitor, including stand, bezel, and internal components.

Exploded View Diagram

Component Identification and Part Numbers

Visual representation of monitor parts with their corresponding part numbers for identification.

Bill of Materials (BOM)

Component List and Descriptions

Comprehensive list of all parts used in the assembly, including part numbers and descriptions.

Different Parts List

Parts Variations by Model

Comparison of specific parts used across different monitor model variations.

Related product manuals