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Dell E190Sf User Manual

Dell E190Sf
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Service Manual
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Service Manual
LCD Monitor E190Sf
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Dell E190Sf Specifications

General IconGeneral
Screen Size19 inches
Resolution1280 x 1024
Panel TypeTN
Aspect Ratio5:4
Brightness250 cd/m²
Contrast Ratio1000:1
Response Time5 ms
ConnectivityVGA
Display TypeLCD
Viewable Size19 inches
Dot Pitch0.294 mm
Max Resolution1280 x 1024
Video Bandwidth135 MHz
Horizontal Refresh Rate30 - 81 kHz
Vertical Refresh Rate56 - 76 Hz
Input SignalAnalog
Viewing Angle160° (H) / 160° (V)
Input ConnectorsVGA

Summary

Precautions and Safety Notices

Safety Precautions

General safety guidelines for monitor operation and handling.

Product Safety Notice

Notice regarding replacement parts and safety characteristics.

Service Notes

Guidelines for handling circuit boards and wiring during servicing.

Service Tools and Equipment

Circuit Theory

Block Diagram

High-level overview of the monitor's internal functional blocks.

Electronic Circuit Theory

Detailed explanation of the monitor's electronic circuits and operations.

D-SUB Connector Pin Assignment

Pin details for the D-SUB video connector.

AC Outlet Pin Assignment

Pin configuration for the AC power input connector.

Inner Connector Pin Assignment

Pin details for internal connectors on the monitor.

Key Parts Pin Assignments

Pin assignments for critical components like U401.

Disassembly and Assembly

Exploded Diagram

Visual representation of monitor components for disassembly.

E190SF Disassembly Block

Flowchart illustrating the disassembly procedure of the monitor.

Assembly Block

Flowchart detailing the assembly process of the monitor.

Test and Adjustment

Function Key Definitions

Explains the functions of the monitor's front panel buttons.

OSD Control

Details the On-Screen Display (OSD) menu structure and options.

Factory Mode Introduction

How to enter and use the monitor's factory service mode.

Burn-in Pattern

Procedure for activating and using the burn-in pattern test.

Auto Color Balance

Steps for calibrating color parameters using the auto-color function.

EDID Rewriting Procedure

Instructions for rewriting EDID data using specific software.

Firmware Upgrade Procedure

Process for upgrading monitor firmware using a programmer.

Post-Repair Tests and Adjustments

Tests and adjustments to perform after repair.

Trouble Shooting

Common Acknowledge

General notes on component replacement and firmware.

No Power Supply

Troubleshooting guide for power supply issues.

Power LED Amber

Diagnostic steps for amber power LED status.

Power and Backlight Issues

Troubleshooting for backlight not turning on.

No Picture with Backlight On

Steps to diagnose no picture with backlight on.

Color Loss in Gray Scale Patterns

Troubleshooting color issues in 32-gray scale patterns.

Diagnostic Test Pattern

How to enter and use diagnostic test patterns.

Recommended Part List

Bill of Material

Schematic Diagrams

PCB Layout Diagrams

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