Acer AL1913c User manual

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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
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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……………….………….……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
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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
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
2
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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
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(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
5
1 2
3
0
320 640
960
1280
0
256
512
768
1024
X
4
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Luminance of center point: L=L(5)
Brightness Uniformity Measurement points: Five specified points 1-5
Formula: Maximum [L (1), L (2), L (3), L (4), L (5)]/Minimum [L (1), L (2), L (3), L (4),
L (5)]
(3)Definition of Response Time (TR, TF):
(4)Measurement Setup:
The LCD module should be stabilized at given temperature for 20 minutes
to avoid abrupt temperature change during measuring. In order to stabilize
the luminance, the measurement should be executed after lighting Backlight
for 20 minutes in a windless room.
100%
90%
10%
0%
Gray Level 255
Gray Level 0
Gray Level 255
Time
TR
Optical
Response
TF
Photometer
(TOPCON BM-5A)
Field of View= 2º
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
No. Name Descriptions
1Power Switch Power On/Off
LED Indicator Green Normal operation
2Orange Power management
3MENU OSD control MENU button
4>Right selection/ Volume button (AL1714m/AL1714bm)
5<Left selection/ Volume button (AL1714m/AL1714bm)
6AUTO Adjust Clock, Phase, H Position and V Position automatically
7Speaker 2.5W x 2
Chapter 2
2
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2.1.2 Back
No. Name Descriptions
8D-Sub D-sub mini 15pin Connector
9DVI DVI-D 24pin Connector
10 Audio IN Phone Jack 3.5ψ
11 DC-InDC Power Jack, d=3.0mm
12 Lock hole Kensington
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2.2 OSD Menu Description
1. POWER : Press this key to control power ON/OFF of theMonitor.
Green: normal display.
Orange flicker: no signal input.
Orange: power off.
2. MENU :Press this button to enter OSD. Press it again to exit OSD.
3. >: Press this button for selection or adjustment when OSD is shown.
Press this button and click > to plus volume.
4. <: Press this button for selection or adjustment when OSDis shown.
Press this button and click < to minus volume.
5. AUTO: Press this button to exit the manual when OSDis shown.
Press this button for the display to optimize the position,
phase and clock pulse automatically when OSD is not
shown.
AUTO
MENU
>
<POWER
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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
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uThe OSD disappears several seconds after you stop pressing the
buttons while performing an adjustment.
uAny changes are automatically saved in the memory when the OSD
disappears. Turning off the power should be avoided while using the
menu.
uAdjustments for clock,phase and positionsare saved for each signal
timing. Except for these adjustments, all other adjustments have only
one setting which applies to all signal timings.
uThe color will change from white to pink while the function is selected.
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2.5 OSD Function Definition
Primary
Directory
Symbo
Secondary
Directory
Symbol
Secondary
Directory Items Description
Contrast Adjust 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 Adjust 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 Français
N/A Español
N/A Italiano
N/A ????
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 Analog Digital Select the input source you want (for DVI
Input only)
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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
2.6 Plug and Play
uThe new VESA Plug and Play function is used which eliminates the
complicated and time-consuming installation process.
uYou can use the Plug and Play system without encountering usual
installation problems. Your computer system can easily identify and
automatically adjust the monitor.
uThe 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
uPower control system, also called (Power Saver), is installed inside
the LCD Monitor.
uIf 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.
uThe VGA card inside the computer handles Power Saver. You can
use computer software to set the function.
uThe LCD Monitor is compatible with EPA ENERGY STAR and
NÜTEK if used with a VESA DPMS computer.
uTo save power, turn off the power of the LCD monitor when not in use.
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MACHINE DISASSEMBLY
AND ASSEMBLY
3.1 Disassembly Procedures
Picture Description
Push the hooks and stand bottom away
Remove Hinge Cover
Loosen and remove 4 screws
Remove Stand Assy
Loose and remove 5 screws.
Separate Bezel hooks to take Bezel and Rear Cover
apart.
Chapter 3
2
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Lift up Rear Cover
Loose and remove 2 screws
Loose and remove 3 screws
Remove FFC
Remove the Cover of X-PCB
Loose and remove 3 screws
Remove Power PCBA
Remove 2 pieces of FFC from AD PCBA
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