Acer AL1913 Manuale utente

Acer AL1913c

Service Guide

Service guide files and updates are available

on the CSD web : for more information,

Please refer to http: csd.acer.com.tw

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……………….………….……12

2.1 Function Name…………………………………………………12

2.2 OSD Menu Description…..……………………………………14

2.3 OSD Control…..…………………………………………………15

2.4 OSD Menu Screen……..……...……………………………….15

2.5 OSD Function Definition.…………………………………...…17

2.6 Plug and Play……….…………………………………………..18

2.7 Power Saver……………………………………………...……..18

Chapter 3 Machine Disassembly and Assembly……..…….……19

3.1 Machine Disassembly…………………………………………19

3.2 Machine Assembly……………….…………………………... 22

Chapter 4 Troubleshooting…………………….….…….………….……25

4.1 Abnormal display Troubleshooting…………………………25

4.2 Abnormal (On/Off, LCD Display, K/B) Troubleshooting...27

4.3 Abnormal (BIOS, OSD, Other Display) Troubleshooting...28

4.4 Audio Abnormal………………………….…………………….29

Chapter 5 Connector Information…………...……….………...……30

5.1 Function Block Diagram…………….…………………………30

5.2 Connector Location……..………….…………………………31

5.3 D-sub Mini 15Pin Connector…………………...….…….……32

5.4DVI-D24Pin Connector………….……………...….…….……32

5.5DC Connector…………...…………………….…….…….……32

5.6Audio Connector………………………………...….…….……32

5.7Main Board Pin Assignment Introduction……….…….……32

Chapter 6 FRU(Field Replaceable Unit……...……….………………37

Chapter 7 Schematic Diagram…………….………………..…….……41

Monitor Features

1.1 Test Conditions

Item Condition

Temperature Normal room temperature (25±2℃)

Humidity 50±10%

AC input voltage 100V±2V, 120±2V, 60Hz / 240±2V, 50Hz

Brightness Maximum with OSD setting

Contrast Middle with OSD setting

Resolution setting 1280 x 1024 @60HZ

Color temperature With OSD setting

Measuring instrument

Topcon luminance colorimeter BM-5A or equivalent

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

advance

1.2 Features

l19”SXGA TFT LCD Panel

lMVA Mode Liquid Crystal

lD-SUB/ DVI-D Input

lAudio Function

lSupport to 75Hz Refresh Rate

lSupport VESA-DCC 2B plug & play function

lSupport VESA-DPMS & DVI DMPM Power Management Function

lSuper Wide Viewing Angle

lHigh Brightness & Contrast Ratio

lHigh Brightness & Contrast Angular Dependent

lFast LC Response Time

lLight Weight

Chapter 1

1.3 LCD panel Specification

Technical Specifications

Panel Dimension

Diagonal 481.9mm (19 inch) LCD display

Max. Resolution 1,280 x 1,024/SXGA

Max. Pixel Up to 16.2M true color

Pixel Span Horizontal 0.294mm x Vertical 0.294mm

Brightness 300 cd/m2

Contrast 800 : 1

LC Response

Time 23ms

Visual Angle Horizontal 170°/ Vertical 170°

LCD

Panel

(Back Light

Source)

Effective Display Horizontal 376.32mm x Vertical 301.056mm

Signal Mode Simulated video frequency: 0.7 Vpp, 75Ω

(separate SYNC and composite SYNC)

SYNC Frequency

Horizontal 30kHz~82kHz x Vertical 56Hz ~76Hz

Input Signal

Max. Pixel Clock

135MHz

Image D-Sub 15 PIN (VESA) / DVI-D (Optional)

Input Terminal

Audio Phone Jack, d=3.5mm (Optional)

Power Transformer AC100~240Volts, 50/60Hz

Power Consumption 65W / Standby 3W

Temperature 5℃~ 35℃(operation)/ -20℃~ 55℃(storage)

Environmental

Conditions Humidity 20% ~ 80% (operation)/ 20% ~ 85% (storage)

Actual Dimension (W x D x

H) 427 mm x 196mm x 429mm

Net Weight 4.5 kg

Safety Standard TCO99;UL/CUL;TÜV-GS;CE/LVD;TÜV-

ERGO;CB;CCC;FCC-B; VCCI-B;CE/EMC;C-Tick

;

BSMI; ISO 13406-2;EPA; PCT

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

(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:

12 o’clock direction

θy+ = 90º

6 o’clock

θy-= 90º

θx-θx+

θy-θy+

x-y+

y-x+

Normal

θx = θy = 0º

θX+ = 90º

θX-= 90º

Active area

Vertical Line Number

Horizontal Line Number

Horizontal Line Number [pixel]

: test point

X=1 to 5

320

640

960

1280

256

512

768

1024

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