Acer AL1917L Schematic

Service guide files and updates are available
on the CSD web: for more information,
Please refer to http: csd.acer.com.tw

Acer AL1917L
Service Guide

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Table of Contents

Chapter 1 Monitor Features…………………………………….………. 8

1.1 Test Conditions……………………………………….………… 8

1.2 Features…………………….……………………………….…... 8

1.3 LCD Panel Specification……………………………………... 9

Chapter 2 OPERATING INSTRUCTIONS……………….………….……14

2.1 Function Name…………………………………………………14

2.2 OSD Menu Description…..……………………………………17

2.3 OSD Control…..………………………………………………...18

2.4 OSD Menu Screen …..……...…………………………………18

2.5 OSD Function Definition ………………………………………19

2.6 Plug and Play……….………………………………………......21

2.7 Power Saver……………………………………………………..21

Chapter 3 Machine Disassembly and Assembly……..…….….…22

3.1 Machine Disassembly…………………………………………22

3.2 Machine Assembly……………….…………………………... 25

Chapter 4 Troubleshoot ing…………………….….…….….……………28

4.1 Abnormal display Troubleshooting……………………….. .28

4.2 Abnormal (On/Off, LCD Display, K/B) Troubleshooting...30

4.3 Abnormal (BIOS, OSD, Other Display) Troubleshooting. .31

4.4 Audio Abnormal………………………….…………………....32

Chapter 5 Connector Information …………...……….………...……33

5.1 Function Block Diagram…………….…………………………33

5.2 Connector Location……..………….…………………………34

5.3 D-sub Mini 15Pin Connector…………………...….…….……34

5.4 DC Connector…………...…………………….…….…….……34

Chapter 6 FRU (Field Replaceable Unit).…...……….……………...35

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Monitor Features

1.1 Test Conditions

Item Condition

Chapter 1

Temperature

Humidity

AC input voltage

Brightness Maximum with OSD setting

Contrast Middle with OSD setting

Resolution setting 1280 x 1024 @60HZ
Color temperature

Measuring instrument Minolta CS-1000T Spectrometer and Photometer CA-210 or equivalent

Others Before measuring, “Auto Adjust” & “Auto Balance” must be done in advance

With OSD setting. (For TCO03 CCT test condition requirement, the brightness and

contrast setting on OSD shall be adjusted to meet 125 nit.)

Normal room temperature (25±2℃)

50±10%

100V±2V, 120±2V, 60Hz / 240±2V, 50Hz

1.2 Features

 19” SXGA TFT LCD Panel
 TN Mode Liquid Crystal
 D-SUB/ DVI-D Input
 Audio Function(Optional)
 Support to 75Hz Refresh Rate
 Support VESA-DCC 2B plug & play function
 Support VESA-DPMS & DVI DMPM Power Management Function
 Wide Viewing Angle
 High Brightness & Contrast Ratio
 High Brightness & Contrast Angular Dependent
 Fast LC Response Time
 Light Weight

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1.3 LCD panel Specification
General Specifications

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Electrical Specifications

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θx-

θx+ θy-

θy+

(1) Definition of Viewing Angle (θx, θy):

θX- = 90º

x-

6 o’clock

θ

y- = 90º

y-

Normal
θx = θy = 0º

y+

12 o’clock direction

y+ = 90º

θ

x+

θX+ = 90º

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A

[p

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(2) Definition of Contrast Ratio (CR):

The contrast ratio can be calculated by the following expression and figure below.
Contrast Ratio (CR) = L255 / L0
L255: Luminance of gray level 255

L 0: Luminance of gray level 0
CR = CR (5)

CR (X) is corresponding to the Contrast Ratio of the point X at Figure in Note (5).

Definition of luminance measured points and Brightness Uniformity:

Horizontal Line Number [pixel]

ixel

Vertical Line Number

Delta X=17.0mm;Delta Y=17.0mm。

: test point

ctive area

Luminance of center point: L=L(1)
Brightness Uniformity Measurement points: Five specified points 1-5

Formula: Maximum [L (1), L (2), L (3), L (4), L (5), L (6), L (7), L (8), L (9), L (10),

L (11), L (12), L (13)]/Minimum [L (1), L (2), L (3), L (4), L (5),
L (6), L (7), L (8), L (9), L (10), L (11), L (12), L (13)]

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