Acer AL1917
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 ………………………………………19
2.6 Plug and Play……….………………………………………......19
2.7 Power Saver……………………………………………………..18
Chapter 3 Machine Disassembly and Assembly……..…….… .… 20
3.1 Machine Disassembly…………………………………………20
3.2 Machine Assembly……………….…………………………... 24
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
Chapter 1
1.1 Test Conditions
Item
Condition
Temperature
Normal room temperature (25±2℃)
50±10%
Humidity
AC input voltage
100V±2V, 120±2V, 60Hz / 240±2V, 50Hz
Brightness
Contrast
Maximum with OSD setting
Middle with OSD setting
Resolution setting
Color temperature
Measuring instrument
Others
1280 x 1024 @60HZ
With OSD setting
Minolta CS-1000T Spectrometer and Photometer CA-210 or equivalent
Before measuring, “Auto Adjust” & “Auto Balance” must be done in advance
1.2 Features
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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
Technical Specification
Item
Specification
Unit
Panel Model
M190E5-L0A
LCD panel
Active Area
Driver Element
Pixel Number
376.32 (H) x 301.056 (V) (19.0” diagonal)
a-si TFT Active Matrix
1280 x R.G.B. x 1024
0.294 (H) x 0.294 (V)
RGB Vertical Stripe
16.2M
Pixel Pitch
Pixel Arrangement
Display Color
LCD panel
Tran missive Mode
Viewing Angle (H / V)
Brightness
Normally White
Typical 150 / 130
Typical 280
Contrast Ratio
LC Response Time
(Tr+Tf)
Typical 400
8 (Tr: 2 + Tf: 6)
Separate Sync.
TTL Level
Graphic
Positive / Negative
Horizontal Sync.
Vertical Sync.
Input Connector
Auto Adjust
Graphic
Positive / Negative
D-Sub mini 15 pins, DVI-D 24 pins
Clock, Phase, H Position & V Position
VGA/SVGA/XGA/SXGA Full Screen Display
VESA DPMS, DVI DMPM, ENERGY STAR®
Compliance
Performance
Screen Scaling
Power Management
Performance
Color Adjustment
OSD Language
User, 6500K, 7500K & 9300K
English, French, German, Spanish, Italian, Japanese,
Traditional Chinese, Simplified Chinese
Power
source
Power Input
AC100~240 (Worldwide)
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Power source
Power consumption
Power
Operation Mode
consumption
Power Saving Sleep
Mode
2W @230VAC 50Hz
Power Saving OFF Mode
Upward / Downward
Dimension, weight
Plug & Play
1W @230VAC 50Hz
20 / -5
Tilt angle
Physical
DCC
Tilt angle
Physical
DCC
410.1 x 425.5 x 189.6 (W x H x T), (4.5)
DDC 2B Compliance
Front key
5keys
Function
Function
Audio & Speaker
2.5 W x2
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(1)
Definition of Viewing Angle (qx, qy):
Normal
qx = qy = 0º
qy-
qy+
12 o’ clock direction
qy+ = 90º
qX- = 90º
x-
y+
qx-
qx+
6 o’ clock
qy- = 90º
Y-
x+
qX+ = 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]
: Test point
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) and Measurement Method:
Gray Level 255
Gray Level 255
100%
90%
Optical
Response
Gray Level 0
10%
0%
Time
T
F
T
R
(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.
LCD Module
Spectrometer
LCD Panel
(Minolta CS1000T)
Center of the Screen
Light Shield Room
(Ambient Luminance < 2 lux)
500 mm
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OPERATING INSTRUCTIONS
Chapter 2
2.1 Function Name
2.1.1 Front
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No.
Name
Descriptions
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Power Switch
LED Indicator
Power On/Off
Green
Normal operation
Power management
Orange
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MENU
>
OSD control MENU button
Right selection/ Volume button
Left selection/ Volume button
Adjust Clock, Phase, H Position and V Position automatically
2.5W x 2
<
AUTO
Speaker
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2.1.2 Back
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No.
Name
Descriptions
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Lock hole
D-Sub
Kensington
D-sub mini 15pin Connector
24 pin connector
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DVI-D IN (Optional)
Audio IN (Optional)
AC-In
Phone Jack 3.5ψ
AC Power Jack
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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
3. < >: Press this button for selection or adjustment when OSD is shown.
4. +/ : 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.
5. — / : 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.
AUTO
MENU
POWER
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>
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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
u The OSD disappears several seconds after you stop pressing the buttons while
performing an adjustment.
u Any changes are automatically saved in the memory when the OSD disappears.
Turning off the power should be avoided while using the menu.
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u 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.
u The color will change from white to pink while the function is selected.
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2.5 OSD Function Definition
Primary Secondary
Directory Directory
Secondary
Directory Items
Description
Symbol
Symbol
Adjust the contrast between the foreground and
background of an image on the screen
Contrast
Brightness
Phase
Adjust the background brightness of the screen
Adjust the focus of the image (for analog input
adjustment only)
Adjust the clock pulse of the image (for analog input
adjustment only)
Clock Pulse
Move the image left and right on the screen (for analog
input adjustment only)
Horizontal
Vertical
Move the image up and down on the screen (for analog
input adjustment only)
N/A
N/A
Warm Color Temp. Set up the color temp. to be warm white color
Cold Color Temp. Set up the color temp. to be cold white color
User Definition/Red
User
Definition/Green
Adjust red/green/blue gain
User
Definition/Blue
English
N/A
N/A
繁體中文
N/A
N/A
N/A
N/A
Deutsch
Select the language you want
Francis
Espanola
Italian
N/A
N/A
? ? ? ?
日本語
Horizontal
Vertical
Move OSD left and right
Move OSD up and down
OSD Time Display Adjust OSD time display settings
Set up horizontal, vertical, sequence and focus
automatically (for analog input only)
Auto Adjustment
N/A
N/A
Analog
Digital
Select the input source you want (for DVI Input only)
Display resolution, H/V frequency and the input port
used for current input timing function
Message
Restore
N/A
N/A
Restore to factory settings
Exit
Close the OSD window and save changes
N/A
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2.6 Plug and Play
u The new VESA Plug and Play function is used which eliminates the complicated and
time-consuming installation process.
u You can use the Plug and Play system without encountering usual installation problems.
Your computer system can easily identify and automatically adjust the monitor.
u 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
u Power control system, also called (Power Saver), is installed inside the LCD Monitor.
u 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.
u The VGA card inside the computer handles Power Saver. You can use computer
software to set the function.
u The LCD Monitor is compatible with EPA ENERGY STAR and NÜ TEK if used with a
VESA DPMS computer.
u 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
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3.2 Assembly Procedures
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Troubleshooting
Chapter 4
4.1 Abnormal Display Troubleshooting
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4.2 Abnormal (ON/OFF, LCD display, Keyboard) Troubleshooting
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4.3 Abnormal (BIOS, OSD, Other Display) Troubleshooting
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4.4 Audio Abnormal Troubleshooting
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Connector Information
Chapter 5
5.1 Function Block Diagram
OSD Key Pad / Audio Out
Speaker
Audio In
3.3V
Main Board
LCD Module
D-sub
Signal
Analog Video
DC/DC
DC-5V
DC-19V
AC Power
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5.2 D-sub mini 15pin Connector
Pin No.
Pin Function
Pin No.
Pin Function
1
2
Red video input
9
NC
Green video input
Blue video input
10
Ground
3
11
No connection
(SDA)
4
5
6
7
8
NC
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13
14
15
Ground
Horizontal sync (Composite sync)
Red video ground
Green video ground
Blue video ground
Vertical sync
(SCL)
5.3 Audio Connector
5.4 AC Connector
Phone Jack, d=3.5mm
ac power jack
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FRU (Field Replaceable Unit) List
Chapter 6
Part List
Picture
Part name Description
Vendor Part
No.
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Picture
Part name Description
Vendor Part
No.
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Explosion Diagram
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