Acer AL1913 User manual

Acer AL1913W
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……………….………….……13
2.1 Function Name…………………………………………………13
2.2 OSD Menu Description…..……………………………………15
2.3 OSD Control…..………………………………………………...16
2.4 OSD Menu Screen..……...…………………………………….16
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…………………...….…….……31
5.4 DC Connector…………...…………………….…….…….……31
Chapter 6 FRU (Field Replaceable Unit……...……….…………… .32
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Monitor Features
Chapter 1
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 1440 x 900 @60HZ
Color temperature With OSD setting
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” wide WXGA+ TFT LCD Panel
 MVA Mode Liquid Crystal
 D-SUB/ DVI-D Input
 Audio Function
 Support to 75Hz Refresh Rate
 Support VESA-DCC 2B plug & play function
 Support VESA-DPMS & DVI DMPM Power Management Function
 Super 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
Technical Specification
Item Specification Unit
Panel Model LXJ007XXXXXX
Active Area 408.24 (H) x 255.15 (V) (19.0” wide diagonal) mm
Driver Element a-si TFTActive Matrix -
Pixel Number 1440 x R.G.B. x 900 Pixel
Pixel Pitch 0.284 (H) x 0.284 (V) mm
Pixel Arrangement RGB Vertical Stripe -
Display Color 16.2M Color
Tran missive Mode Normally Black -
Viewing Angle (H / V) Typical 170 / 170 Degree
Brightness Typical 350 cd/m2
Contrast Ratio Typical 500 -
LCD panel
LC Response Time (Tr+Tf) 20 (Tr: 13 + Tf: 7) msec
Separate Sync. TTL Level -
Horizontal Sync. Positive / Negative -
Vertical Sync. Positive / Negative -
Graphic
Input Connector D-Sub mini 15 pins, DVI-D 24 pins -
Auto Adjust Clock, Phase, H Position & V Position -
Screen Scaling VGA/SVGA/XGA/SXGA Full Screen Display -
Power Management VESA DPMS, DVI DMPM, ENERGY STAR® Compliance -
Color Adjustment User, 6500K, 7500K & 9300K -
Performance
OSD Language English, French, German, Spanish, Italian, Japanese,
Traditional Chinese, Simplified Chinese, Russian -
Power Input AC100~240 (Worldwide) V
Power source Power Output 19VDC -
Operation Mode 52 W
Power consumption Power Saving Mode 3 W
Tilt angle Upward / Downward 20 / -1 Degree
Physical Dimension, weight 462 x 385 x 180 (W x H x T), 4.0 mm, kg
DCC Plug & Play DDC 2B Compliance -
Front key 5keys -
Function Audio & Speaker 2.5 W x2 -
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(1) Definition of Viewing Angle (θx, θy):
θX- = 90º
θX+ = 90º
Normal
θx = θy = 0º
x+
y-
y+
x-
θ
y+
θ
y-
θ
x
+
θ
x-
6 o’clock
θy- = 90º
12 o’clock direction
θy+ = 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:
Horizontal Line Number [pixel]
Vertical Line Number
[p
ixel
]
: test point
(Minolta C
A
-210)
X
Active area
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)]
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(3) Definition of Response Time (TR, TF):
(4) Luminance, Chromaticity and CCT Measurement
Measurement System Setup:
The LCD module should be stabilized at given temperature for 30 minutes to avoid abrupt
temperature change during measuring. In order to stabilize the luminance, the measurement should be
executed after lighting Backlight for 30 minutes in a windless room.
100%
90%
10%
0%
Optical
Response
Time
TRTF
500 mm Light Shield Room
(Ambient Luminance < 2 lux)
Spectrometer
(Minolta CS1000T )
Center of the Screen
LCD Panel
LCD Module
Gray Level 0
Gray Level 255Gray Level 255
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OPERATING INSTRUCTIONS
Chapter 2
2.1 Function Name
2.1.1 Front
No. Name Descriptions
1 Power Switch Power On/Off
Green Normal operation
2 LED Indicator Orange Power management
3 MENU OSD control MENU button
4 > Right selection/ Volume button
5 < Left selection/ Volume button
6 AUTO Adjust Clock, Phase, H Position and V Position automatically
7 Speaker 2.5W x 2
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2.1.2 Back
No. Name Descriptions
8 Lock hole Kensington
9 DC-In DC Power Jack, d=3.0mm
10 Audio IN Phone Jack 3.5ψ
11 D-Sub D-sub mini 15pin Connector
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2.2 OSD Menu Description
1. Power: Press this key to control power ON/OFF of the Monitor.
Green: normal display.
Orange flicker: no signal input.
Orange: power off.
2. Auto/Exit: When the input signal source is PC, used to execute auto adjustment
>: Press this button for selection or adjustment when OSD is shown.
3. +/ : Used to select the OSD function; when there is OSD menu, used to increase
function value.
Enter brightness control function directly when there is no OSD menu.
4. —/ : Used to select the OSD function; when there is OSD menu, used to decrease
function value.
Enter contract control function directly when there is no OSD menu.
6. Menu: Use to display OSD menu; when there is OSD menu, used to execute OSD
function or enter next layer of OSD menu; if executing OSD function, exit OSD
function and save the value adjusted.
POWER
>
<
AUTO MENU
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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, select “ ” to close the OSD window and save changes. To change
other settings, repeat steps 2-4.
2.4 OSD Menu Screen
Bright/Contract Adjustment
Phase/Clock pulse Adjustment
Horizontal/Vertical Adjustment
Color Temp. Adjustment
Language Selection
OSD Setting
Auto Adjustment
Message
Restore
Exit
The OSD disappears several seconds after you stop pressing the buttons while
performing an adjustment.




Any changes are automatically saved in the memory when the OSD disappears.
Turning off the power should be avoided while using the menu.
Adjustments for clock, phase and positions are saved for each signal timing. Except for
these adjustments, all other adjustments have only one setting, which applies to all
signal timings.
The color will change from white to pink while the function is selected.
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2.5 OSD Function Definition
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
A
djust 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
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
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2.6 Plug and Play
The new VESA Plug and Play function is used which eliminates the complicated and
time-consuming installation process.








You can use the Plug and Play system without encountering usual installation problems.
Your computer system can easily identify and automatically adjust the monitor.
The LCD Monitor uses Display Data Channel (DDC) to send Extended Display
Identification Data (EDID) to the computer system, so the computer system can be set
to monitor auto adjust.
2.7 Power Saver
Power control system, also called (Power Saver), is installed inside the LCD Monitor.
If the monitor has not been used for a certain period of time, the system will turn the
monitor to low voltage mode to save power. Slight moving or any click will return to the
original image.
The VGA card inside the computer handles Power Saver. You can use computer
software to set the function.
The LCD Monitor is compatible with EPA ENERGY STAR and NÜTEK if used with a
VESA DPMS computer.
To save power, turn off the power of the LCD monitor when not in use.
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MACHINE DISASSEMBLY
AND ASSEMBLY
Chapter 3
3.1 Disassembly Procedures
Picture Description
Push the hooks and stand bottom away
Remove Hinge Cover
Loosen and remove 6 screws to remove Stand Assay
Loose and remove 5 screws.
Separate Bezel hooks to take Bezel and Rear Cover
apart.
Lift up Rear Cover
Remove FFC
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Loose and remove 2 screws
Loose and remove 3 screws
Remove the Cover of X-PCB
Remove 5 pieces of Backlight wires.
Loose and remove 3 screws
Remove Power PCBA
Remove 2 pieces of FFC from AD PCBA
Loose and remove 4 screws
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