Acer AL1714 User manual

Acer AL1714
Service Guide
Service guide files and updates are available
on the CSD web : for more information,
Please refer to http: csd.acer.com.tw

2

3

4

5

6

Table of Contents
Chapter 1 Monitor Features…………………………………………….…. 8
1.1 Test conditions……………………………………….……….… 8
1.2 Features…………………….………………………………….... 8
1.3 LCD Panel specification………………………………………... 9
1.4 Connector Pin Assignment………………………...…..……...12
Chapter 2 OPERATING INSTRUCTIONS………..….………….……14
2.1 Function Name…………………………….…….………………14
2.2 OSD Menu Description…..……………….…….………………16
2.3 OSD Operation…………………………….…….………………17
2.4 OSD Function Definition……...………….……….…………….18
2.5 Plug and Play…………………………….…………………...…19
2.6 Power Saver……………………………………………………..19
Chapter 3 Machine Disassembly and Assembly……..………….……20
3.1 Machine Disassembly……………………………………..……20
3.2 Machine Assembly……………….…………………………...…23
.
Chapter 4 Troubleshooting……………………...……….………….………26
4.1 Abnormal display Troubleshooting…………………….………26
4.2 Abnormal (On/Off, LCD Display, K/B) Troubleshooting……..28
4.3 Abnormal (BIOS, OSD, Other Display) Troubleshooting……29
4.4 Audio Abnormal………………………….…………………..…..30
Chapter 5 Connector Information…………...……….…………………....31
5.1 Function Block Diagram………………………………….…..…31
5.2 Connector Location……..………………………………….……32
5.3 Main Board Pin Assignment Introduction…………….….……33
Chapter 6 FRU(Field Replaceable Unit……...……….…………….……38
Chapter 7 Schematic Diagram…………….………………..………………41
7

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 1280 x 1024 @60HZ
Color temperature With OSD setting
Measuring instrument Topcon luminance colorimeter BM-5A or equivalent
Others Before measuring, “Auto Config” & “Auto Balance” must be done in
advance
1.2 Features
 17” SXGA TFT LCD Panel
 TN Mode Liquid Crystal
 D-SUB
 Audio Function (Optional)
 Support to 75Hz Refresh Rate
 Support VESA-DCC 2B plug & play function
 Support VESA-DPMS Power Management Function
 Super Wide Viewing Angle
 High Brightness & Contrast Ratio
 High Brightness & Contrast Angular Dependent
 Fast LC Response Time
 Light Weight
1.3 LCD panel Specification
8

1.3.1 Optical Specifications
The relative measurement methods of optical characteristics are shown in 4.2. The
following items should be measured under the test conditions described in 4.1 and
stable environment shown in Note (4).
Item Symbol Condition Min. Typ. Max. Unit Note
Contrast Ratio CR 250 350 - - (2), (4)
TR-
4 10 ms
LC Response Time TF-
10 25 ms (3)
Luminance of center point L
θx=0°, θY=0°
Viewing
Normal
Angle
250 350 - cd/
m2(2), (4)
Luminance(Angular dependent) LR- 1.3 1.7 - (2), (5)
Contrast (Angular-dependent) Cm 0.5 0.9 - - (2), (6)
Brightness Uniformity Uni. - 1.1 1.3 - (2), (4)
Rx 0.604 0.634 0.664 -
Red Ry 0.330 0.360 0.390 -
Gx 0.251 0.281 0.311 -
Green Gy 0.572 0.602 0.632 -
Bx 0.112 0.142 0.172 -
Blue By 0.037 0.067 0.097 -
Wx 0.283 0.313 0.343 -
Color
Chromaticity
White Wy
0.299 0.329 0.359 -
(2)
θx+ 70 80 -
Horizontal
θx- 70 80 -
θY+ 50 60 -
Viewing
Angle
Vertical
θY-
CR≥10
50 60 -
Deg. (1),(4)
9

Note (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+
θX- = 90º
θX+ = 90º
Normal
θx = θy = 0º
Note (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
640320
01280
960
Active area
768
512
256
0
: test point
X=1 to 5
X
4
3
21
5
Vertical Line Number
1024
Horizontal Line Number [pixel]
10

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)]
Note (3) Definition of Response Time (TR, TF):
TRTF
Gray Level 0
Gray Level 255Gray Level 255
100%
90%
10%
0%
Optical
Response
Time
Note (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.
Light Shield Room
(Ambient Luminance < 2 lux)
Center of the Screen
LCD Panel
LCD Module
500 mm
Field of View = 2º
Photometer
(TOPCON BM-5A)
11

1.4 Connector Pin Assignment
1.4.1 D-sub mini 15pin Connector
Pin No. Pin Function Pin No. Pin Function
1 Red video input 9 NC
2 Green video input 10 Ground
3 Blue video input 11 No connection
4 NC 12 (SDA)
5 Ground 13 Horizontal sync (Composite sync)
6 Red video ground 14 Vertical sync
7 Green video ground 15 (SCL)
8 Blue video ground
1.4.2 DC Connector DC Power Jack, d=3.0mm
12

1.4.3 Audio Connector (Optional) Phone Jack, d=3.5mm
(AL1714m/ AL1714bm)
13

OPERATING INSTRUCTIONS
Chapter 2
2.1 Function Names
2.1.1 Front
No. Name Descriptions
1 Power Switch Power On/Off
2 LED Indicator Green Normal operation
Orange Power management
3 MENU OSD control MENU button
4 > Right selection/ Volume button (AL1714m/AL1714bm)
5 < Left selection/ Volume button (AL1714m/AL1714bm)
6 AUTO Adjust Clock, Phase, H Position and V Position
automatically
7 Speaker 2.5W x 2
14

2.1.2 Back
No. Name Descriptions
8 AUDIO-IN d=3.5mm stereo mini Jack (AL1714m/ AL1714bm)
9 VGA-IN D-sub mini 15pin Connector
10 DC-IN DC Power Jack, d=2.0mm.
11 Lock hole Kensington
15

2.2 OSD Menu Description
1. Power : Press this key to control power ON/OFF of the Monitor.
Green: Power is on and normal .
Orange Sleep status in the energy-saving mode.
Orange: Power off.
2. Menu :Press this button to enter OSD. Press it again to exit OSD.
3. > / Plus and < / Minus : Press this button for selection or
adjustment when OSD is shown.Press this button and click < and
> to adjust volume when OSD is not shown (for the model with
speakers only)
4. Auto : Press this button to exit the manual when OSD is shown.
Press this button for the display to optimize the position, phase and
clock pulse automatically when OSD is not shown.
Auto LEDMenu
< > Power
`
16

2.3 OSD Operation
 Click MENU to display the OSD window as shown in the following
figure.
 Click < or > to select the function to be adjusted as shown in the
following figure.
 Click the MENU to select the function to be adjusted.
 Click < or > to change current settings.
 To exit OSD, select “ ” to close the OSD window and save changes. .
Bright/Contract Adjustment
Phase/Clock pulse Adjustment
Horizontal/Vertical Adjustment
Color Temp. Adjustment
Language Selection
OSD Setting
Auto Adjustment
Message
Restore
Exit
17

2.4 OSD function definition
Primary
Directory
Symbol
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 input
adjustment only)
Horizontal Move the image left and right on the screen (for
input adjustment only)
Vertical Move the image up and down on the screen (for
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 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
(for analog input
only)
N/A Auto
Adjustment Set up horizontal, vertical, sequence and focus automatically
N/A Message Display resolution, H/V frequency and the input
port used for current input timing function.
18

N/A Restore Restore to factory settings
N/A Exit Close the OSD window and save changes.
2.5 Plug and Play
The product provides the latest VESA plug and play function to
prevent complicated and time-consuming installation procedures. The
plug and play function allows your computer system to identify the
LCD display easily and set up the functions of the LCD display
automatically.







The LCD display transfers the Extended Display Identification Data
(EDID) to your computer system via the Display Data Channel
(DDC), so that your computer can use the self-setting function of the
LCD display.
2.6 Power Saver
The LCD display has a built-in Power Control System (Power Saver).
When the LCD display is not operated during a certain time, the
Power Control System will brings the LCD display into low voltage
status automatically to save power. Move the mouse slightly or press
any key to return to the normal operation.
The Power Saver function can only be operated by the display card
of the computer system. You can set up this function from your
computer.
The LCD display is compatible with EPAENERGY STAR NÜTEK
when used with VESA DPMS
To save power and extend the life of the product, turn off the LCD
display power supply when it is not used or when remaining idle for a
long time.
19

MACHINE DISASSEMBLY
AND ASSEMBLY
3.1 Disassembly Procedures
Chapter 3
Picture Description
Push the hooks and stand bottom away
Remove Hinge Cover
Loosen and remove 6 screws to remove Stand Assy
Loose and remove 5 screws.
Separate Bezel hooks to take Bezel and Rear Cover
apart.
Lift up Rear Cover
Remove FFC
20