Acer AL1917L User manual

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Acer AL1917L
Service Guide
Service guide files and updates are available
on the CSD web: for more information,
Please refer to http: csd.acer.com.tw

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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 Troubleshooting…………………….….…….….……………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
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. (For TCO03 CCT test condition requirement, the brightness and
contrast setting on OSD shall be adjusted to meet 125 nit.)
Measuring instrument Minolta CS-1000T Spectrometer and Photometer CA-210 or equivalent
Others Before measuring, “Auto Adjust” & “Auto Balance” must be done in advance
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
Chapter 1

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1.3 LCD panel Specification
General Specifications

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Electrical Specifications

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(1) Definition of Viewing Angle (θx, θy):
12 o’clock direction
θy+ = 90º
6 o’clock
θy- = 90º
θ
x-
θ
x
+
θ
y-
θ
y+
x- y+
y- x+
Normal
θx = θy = 0º
θX+ = 90º
θX- = 90º

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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:
Delta X=17.0mm;Delta Y=17.0mm。
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)]
A
ctive area
Vertical Line Number
[p
ixel
]
Horizontal Line Number [pixel]
X
: test point

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(3) Definition of Response Time (TR, TF) and Measurement Method:
(4) Luminance, Chromaticity and CCT Measurement
Measurement System Setup:
The LCD module should be stabilized at given temperature for 15 minutes to avoid abrupt
temperature change during measuring. In order to stabilize the luminance, the measurement
should be executed after lighting Backlight for 15 minutes in a windless room.
TFTR
Time
Gray Level 0
Gray Level 255
Optical
Response
100%
90%
10%
0%
Gray Level 255
Spectrometer
(Minolta CS1000T )
500 mm
LCD Module
LCD Panel
Center of the Screen
Light Shield Room
(Ambient Luminance < 2 lux)

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OPERATING INSTRUCTIONS
2.1 Function Name
2.1.1 Front
Chapter 2

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2.1.2 Back

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2.2 OSD Menu Description
1 Power source
Power On/Off
Green indication: Power is on and normal.
Orange indication: Sleep status in the energy-saving mode.
Colorless indication: Power off.
2 Menu OSD Menu Press this button to enter OSD. Press it again to exit OSD.
3 > Plus Press this button for selection or adjustment when OSD is
started.
4 < Minus Press this button and click < and > to adjust volume when
OSD is not started (for the model with speakers only).
5 Auto Automatic
adjustment
Press this button to exit the manual when OSD is started.
Press this button for the display to optimize the position,
phase and clock pulse automatically when OSD is not
started.
6 Speaker (For models with
speakers)

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2.3 OSD Control
1. Click MENU to display the OSD window as shown in the following figure.
2. Click < or > to select the function to be adjusted as shown in the following figure.
3. Click the MENU to select the function to be adjusted.
4. Click < or > to change current settings.
5. To exit OSD window, select “ ” to close and save changes. To change other settings,
repeat steps 2-4.
2.4 OSD Menu Screen
(Analog)
Bright/Contract Adjustment
Phase/Clock pulse Adjustment
Horizontal/Vertical Adjustment
Color Temp. Adjustment
Language Selection
OSD Setting
Auto Adjustment
Message
Restore
Exit

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(Digital)
2.5 OSD Function Definition
Bright/Contrast Adjustment
Phase/Clock Pulse Adjustment
Horizontal/Vertical Adjustment
Color Temp. Adjustment
Language Selection
Restore
OSD Setting
Input Selection
Message
Exit

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Primary
Directory
Symbol
Secondary
Directory
Symbol
Secondary
Directory Items Description
Contrast
A
djust the contrast between the foreground and
background of an image on the screen
Brightness Adjust the background brightness of the screen
Phase Adjust the focus of the image (for analog input
adjustment only)
Clock Pulse
A
djust the clock pulse of the image (for analog input
adjustment only)
Horizontal Move the image left and right on the screen (for analog
input adjustment only)
Vertical Move the image up and down on the screen (for analog
input adjustment only)
N/A Warm Color Temp. Set up the color temp. to be warm white color
N/A Cold Color Temp. Set up the color temp. to be cold white color
User Definition/Red
User
Definition/Green
User
Definition/Blue
Adjust red/green/blue gain
N/A English
N/A 繁體中文
N/A Deutsch
N/A Francis
N/A Espanola
N/A Italian
N/A 简体中文
N/A 日本語
N/A Hollands
N/A Suomalainen
N/A Русский
Select the language you want
Horizontal Move OSD left and right
Vertical Move OSD up and down
OSD Time Display Adjust OSD time display settings
N/A Auto Adjustment
Set up horizontal, vertical, sequence and focus
automatically (for analog input only)
N/A
A
nalog
Digital Select the input source you want (for DVI Input only)
N/A Message Display resolution, H/V frequency and the input port
used for current input timing function
N/A Restore Restore to factory settings
N/A Exit Close the OSD window and save changes