AOC LM914 User Manual

LM914  
LM914  
19” LCD Monitor  
User’s  
Manual  
By Envision Peripherals, Inc.  
LM914  
PRECAUTIONS  
! Do not use the monitor near water, e.g. near a bathtub, washbowl, kitchen  
sink, laundry tub, swimming pool or in a wet basement.  
! Do not place the monitor on an unstable cart, stand, or table. If the  
monitor falls, it can injure a person and cause serious damage to the  
appliance. Use only a cart or stand recommended by the manufacturer or  
sold with the monitor. If you mount the monitor on a wall or shelf, use a  
mounting kit approved by the manufacturer and follow the kit instructions.  
! Slots and openings in the back and bottom of the cabinet are provided for  
ventilation. To ensure reliable operation of the monitor and to protect it  
from overheating, be sure these openings are not blocked or covered. Do  
not place the monitor on a bed, sofa, rug, or similar surface. Do not place  
the monitor near or over a radiator or heat register. Do not place the  
monitor in a bookcase or cabinet unless proper ventilation is provided.  
! The monitor should be operated only from the type of power source  
indicated on the label. If you are not sure of the type of power supplied to  
your home, consult your dealer or local power company.  
! The monitor is equipped with a three-pronged grounded plug, a plug with  
a third (grounding) pin. This plug will fit only into a grounded power outlet  
as a safety feature. If your outlet does not accommodate the three-wire  
plug, have an electrician install the correct outlet, or use an adapter to  
ground the appliance safely. Do not defeat the safety purpose of the  
grounded plug.  
! Unplug the unit during a lightening storm or when it will not be used for  
long period of time. This will protect the monitor from damage due to  
power surges.  
! Do not overload power strips and extension cords. Overloading can result  
in fire or electric shock.  
! Never push any object into the slot on the monitor cabinet. It could short  
circuit parts causing a fire or electric shock. Never spill liquids on the  
monitor.  
! Do not attempt to service the monitor by yourself; opening or removing  
covers can expose you to dangerous voltages and other hazards. Please  
refer all servicing to qualified service personnel.  
! To ensure satisfactory operation, use the monitor only with UL listed  
computers which have appropriate configured receptacles marked  
between 100 - 240V AC, Min. 5A.  
! The wall socket shall be installed near the equipment and shall be easily  
accessible.  
! For use only with power adaptor manufacturer by CHI SAM  
ELECTRONIC , model CH-1205. NOTES  
Do not install the monitor in a location near heat sources such as  
radiators or air ducts, or in a place subject to direct sunlight, or excessive  
dust or mechanical vibration or shock.  
PRECAUTIONS (cont)  
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LM914  
Save the original shipping carton and packing materials, as they will come  
in handy if you ever have to ship your monitor.  
For maximum protection, repackage your monitor as it was originally  
packed at the factory.  
To keep the monitor looking new, periodically clean it with a soft cloth.  
Stubborn stains may be removed with a cloth lightly dampened with a mild  
detergent solution. Never use strong solvents such as thinner, benzene,  
or abrasive cleaners, since these will damage the cabinet. As a safety  
precaution, always unplug the monitor before cleaning it.  
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LM914  
SPECIAL NOTES ON LCD MONITORS  
The following symptoms are normal with LCD monitor and do not indicate a  
problem.  
NOTES  
Due to the nature of the fluorescent light, the screen may flicker during  
initial use. Turn off the Power Switch and then turn it on again to make  
sure the flicker disappears.  
You may find slightly uneven brightness on the screen depending on the  
desktop pattern you use.  
The LCD screen has effective pixels of 99.99% or more. It may include  
blemishes of 0.01% or less such as a missing pixel or a pixel lit all of the  
time.  
Due to the nature of the LCD screen, an afterimage of the previous screen  
may remain after switching the image, when the same image is displayed  
for hours. In this case, the screen is recovered slowly by changing the  
image or turning off the Power Switch for hours.  
BEFORE YOU OPERATE THE MONITOR  
FEATURES  
FEATURES  
48cm(19”) TFT Color LCD Monitor  
Crisp, Clear Display for Windows  
Recommened Resolutions: 1280 X 1024 @ 60Hz  
EPA ENERGY  
Dual Input (DVI + Analog)  
STAR®  
2W+2W Stereo Speakers  
Space Saving, Compact Case Design  
CHECKING THE CONTENTS OF THE PACKAGE  
The product package should include the following items:  
1. LCD Monitor  
2. 15-pin D-Sub Cable  
3. DVI Cable  
4. Power Cord  
5. PC Stereo Cable  
6. External Power Adapter  
7. Driver Disk  
8. Quick Start Guide (QSG)  
9. Warranty, Notices, Warnings & Precautions Booklet  
9. Input Not Supported Solution Sheet  
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LM914  
INSTALLATION INSTRUCTIONS  
INSTALLATION INSTRUCTIONS  
SWIVEL BASE  
Install  
Remove  
Figure 1 Installing and Removing the Swivel Base  
POWERCORD  
Power Source:  
1. Make sure that the power cord is the correct type required in your area.  
2. This LCD monitor has an External universal power supply that allows  
operation in either 100/120V AC or 220/240V AC voltage area (No user  
adjustment is required.)  
3. Connect the AC-power cord into your LCD monitor’s External Adapter  
input socket, and then plug the other end of External adapter to LCD  
monitor’s DC-power-input. The AC-power cord may be connected to either  
a wall power outlet or the power outlet socket on your PC, depending on  
the type of power cord supplied with your LCD monitor.  
NOTES  
A certified power supply cord has to be used with this equipment. The  
relevant national installation and/or equipment regulations shall be  
considered. A certified power supply cord not lighter than ordinary polyvinyl  
chloride flexible cord according to IEC 60227 (designation H05VV-F 3G  
0.75mm  
cord be of synthetic rubber according to IEC 60245 (designation H05RR-F 3G  
0.75mm ) shall be used.  
!
or H05VVH2-F2 3G 0.75mm! ) shall be used. Alternative a flexible  
!
5
LM914  
INSTALLATIONS INSTRUCTIONS (cont)  
PREPARING TO INSTALL THE CABLES  
1. Remove the wall mounting hole cover.  
2. Remove the cable cover.  
INSTALLATIONS INSTRUCTIONS (cont)  
LM914  
CABLE CONNECTIONS  
1 – Connect the DC-jack power cable into DC-IN connector on the back of the  
monitor.  
2. Connect one end of the 15-pin D-Sub cable to the back of the monitor and  
connect the other end to the computer’s D-Sub port.  
3. (Optional – Requires a video card with DVI port) Connect one end of the  
24-pin DVI cable to the back of the monitor and connect the other end to the  
computer’s DVI port. be tightened.  
4. (Optional) - Connect the audio cable between the monitor’s audio input &  
the computer sound card’s audio output (green port).  
5. Connect the female end of the power cord to the monitor’s power adapter  
and connect the male end of the power cord to the AC outlet.  
Caution: If the AC outlet is not grounded (with three holes), install the proper  
grounding adapter (not supplied).  
6. (Optional – Headphone not included) – Connect a headphone to the  
monitor’s headphone jack.  
Figure 2 - Connecting Cables  
1. External Adapter  
2. 15-pin D-Sub Cable  
3. DVI Cable  
5. Power Cord  
6. Headphone (Not Included)  
4. Audio Cable  
INSTALLATION INSTRUCTIONS (cont)  
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LM914  
Preparing To Install The Optional Wall Mount Arm (Not Included)  
CONNECTIONS  
This monitor can be attached to a wall mounting arm or bracket you can  
purchase separately from Ergotron (www.ergotron.com). Turn the power OFF  
then dis-connect the cables from the monitor before performing the procedure  
below. Lay the monitor face down on a soft surface.  
1. Remove wall mounting hole cover.  
2. Remove the cable cover.  
3. Remove the 4 screws holding the base to the back of the monitor.  
4. Remove the base.  
INSTALLATION INSTRUCTIONS (cont)  
8
LM914  
Attaching The Optional Wall Mount Arm (not supplied)  
Follow these steps to finish installing the wall mounting arm:  
1. Place the wall mounting arm onto the back of the monitor. Line up  
the holes of the arm with the holes in the back of the monitor.  
2. Insert the 4 screws into the holes and tighten.  
3. Reconnect the cables. Refer to the user’s manual that came with  
the optional wall mounting arm for instrucstions on attaching it to the  
wall.  
ADJUSTING THE VIEWING ANGLE  
INSTALLATION INSTRUCTIONS  
9
LM914  
For optimal viewing it is recommended to look at the full face of the  
monitor, then adjust the monitor’s angle to your own preference.  
Hold the stand so you do not topple the monitor when you change the  
monitor’s angle.  
You are able to adjust the monitor’s angle from -5° to 20°.  
Figure 3  
NOTES  
Do not touch the LCD screen when you change the angle. It may cause  
damage or break the LCD screen.  
Careful attention is required not to catch your fingers or hands when you  
change the angle.  
10  
LM914  
OPERATING INSTRUCTIONS  
GENERAL INSTRUCTIONS  
Press the power button to turn the monitor on or off. The other control buttons  
are located on the side of the monitor (See Figure 4). By changing these  
settings, the picture can be adjusted to your personal preferences.  
The power cord should be connected.  
Connect the video cable from the monitor to the video card.  
Press the power button to turn on the monitor. The power indicator will  
light up.  
Figure 4 - External Control Button  
EXTERNAL CONTROLS  
1. Auto Config / Exit  
5. Power Indicator  
6. Power Button  
7. Headphone Jack  
2.  
3.  
/ Brightness  
/ Contrast  
4. MENU / ENTER  
8. Volume Control  
11  
LM914  
FRONT PANEL CONTROL  
Power Button:  
Press this button to switch the monitor’s power ON or OFF.  
MENU / ENTER :  
Activate OSD menu when OSD is OFF or activate/de-activate adjustment  
function when OSD is ON or Exit OSD menu when in Brightness/Contrast  
OSD status.  
Brightness  
Adjust brightness or function adjust.  
/
:
Contrast  
Adjust contrast or function adjust.  
/
:
Auto Adjust button / Exit:  
1. When OSD menu is in active status, this button will act as EXIT-KEY  
(EXIT OSD menu)  
2. When OSD menu is in OFF, press this button for 2 seconds to  
activate the Auto Adjustment function.  
The Auto Adjustment function is used to set the HPos, VPos, Clock  
and Focus.  
Power Indicator:  
Green  
Orange —  
Power On mode.  
Off mode.  
Headphone Jack:  
A headphone can be connected to this jack for private audio listening.  
Volume Control:  
Adjusts the monitor’s built-in speakers volume.  
12  
LM914  
HOW TO ADJUST A SETTING  
1. Press the MENU-button to activate the OSD window. See figure 5.  
2. Press or to select the desired function. See figure 5.  
3. Press the MENU-button again to activate the highlighted function.  
4. Press  
or  
to adjust the selected function.  
Note:  
is used to adjust the function down &  
is used to adjust the  
function up. This is due to the orientation of the adjustment level bar.  
5. When the OSD window is active, it shows the input signal timing. The "H"  
stands for the horizontal frequency and "V" for the vertical frequency.  
6. To exit and save, select the exit function, or leave the monitor alone for 10  
seconds. If you want to adjust another function press MENU again and  
repeat steps 2-4.  
Figure 5 The OSD Message  
13  
LM914  
ADJUSTING THE PICTURE  
Below describes the function of each OSD icon.  
Contrast  
Adjust the picture contrast.  
1.  
Brightness  
Input Selected  
Focus  
Adjust the picture brightness.  
2.  
3.  
4.  
5.  
Input Signal source selected ( select Analog  
or Digital input source )  
Adjust picture Focus (available in Analog  
mode only).  
Adjust picture Clock (available in Analog  
mode only).  
Clock  
Adjust the horizontal position of the picture  
(availab in Analog mode only).  
6.  
7.  
8.  
H- Position  
Adjust the vertical position of the picture  
(available in Analog mode only).  
V- Position  
Language  
Multi-Language selection  
Stretch the picture to fit full screen, screen  
size ratio or native size (this function only  
works when the resolution setting is lower  
than the native resolution of 1280x1024).  
9.  
Scaling Mode  
Red  
10.  
11.  
Adjusts Red intensity.  
Green  
Adjusts Green intensity.  
Adjusts Blue intensity.  
Blue  
12.  
13.  
The color temperature for 6500°K is  
x=0.313, y=0.329.  
(6500K)Color  
C1  
C2  
The color temperature for 7800°K is  
x=0.296, y=0.311.  
Clear old settings of Auto-configuration, re-  
activates auto-configuration and set the  
color temperature to 7800°K.  
(7800K)Color  
Reset  
14.  
15.  
16.  
Exit  
Save user adjustment and exit OSD menu.  
14  
LM914  
PLUG AND PLAY  
Plug & Play DDC1/2B Feature  
This monitor is equipped with VESA DDC1/2B capabilities according to the  
VESA DDC STANDARD. It allows the monitor to inform the host system of its  
identity and, depending on the level of DDC used, communicate additional  
information about its display capabilities. The communication channel is  
defined in two levels, DDC1 and DDC2B.  
The DDC1 is a unidirectional data channel from the display to the host that  
continuously transmits EDID information. The DDC2B is a bidirectional data  
channel based on the I²C protocol. The host can request EDID information  
over the DDC2B channel.  
THIS MONITOR WILL APPEAR TO BE NON-FUNCTIONAL IF THERE IS  
NO VIDEO INPUT SIGNAL. IN ORDER FOR THIS MONITOR TO OPERATE  
PROPERLY, THERE MUST BE A VIDEO INPUT SIGNAL.  
This monitor meets the Green monitor standards as set by the Video  
Electronics Standards Association (VESA) and/or the United States  
Environmental Protection Agency (EPA) and The Swedish Confederation  
Employees (NUTEK). This feature is designed to conserve electrical energy  
by reducing power consumption when there is no video-input signal present.  
When there is no video input signal this monitor, following a time-out period,  
will automatically switch to an OFF mode. This reduces the monitor's internal  
power supply consumption. After the video input signal is restored, full power  
is restored and the display is automatically redrawn. The appearance is  
similar to a "Screen Saver" feature except the display is completely off. The  
display is restored by pressing a key on the keyboard, or clicking the mouse.  
USING THE RIGHT POWER CORD :  
The accessory power cord for the Northern American region is the wallet plug  
with NEMA 5-15 style and is UL listed and CSA labeled. The voltage rating for  
the power cord shall be 125 volts AC.  
Supplied with units intended for connection to power outlet of personal  
computer: Please use a cord set consisting of a minimum No. 18 AWG, type  
SJT or SVT three conductors flexible cord. One end terminates with a  
grounding type attachment plug, rated 10A, 250V, CEE-22 male configuration.  
The other end terminates with a molded-on type connector body, rated 10A,  
250V, having standard CEE-22 female configuration.  
Please note that power supply cord needs to use VDE 0602, 0625, 0821  
approval power cord in European counties.  
15  
LM914  
TECHNICAL SUPPORT (FAQ)  
Problem & Question  
Power LED is not on  
Possible Solution  
*Check if the Power Switch is in the ON  
position  
*Power Cord should be connected  
*Check if the PC system is Plug & Play  
compatible  
No Plug & Play  
*Check if the Video Card is Plug & Play  
compatible  
*Check if the D-15 plug pin of Video  
Cable is bent  
*Make sure the AOC Monitor Drivers are  
installed  
(AOC Monitor Drivers are available at:  
www.aocmonitor.com)  
Picture is fuzzy  
*Adjust the Contrast and Brightness  
Controls.  
Picture bounces or a wave  
pattern is present in the picture  
The power LED is ON (orange)  
but there’s no video or no  
picture.  
*Move electrical devices that may cause  
electrical interference.  
*Computer Power Switch should be in  
the ON position.  
*Computer Video Card should be snugly  
seated in its slot  
*Make sure monitor’s video cable is  
properly connected to the computer.  
*Inspect monitor’s video cable and make  
sure none of the pins are bent.  
*Make sure computer is operational by  
hitting the CAPS LOCK key on the  
keyboard while observing the CAPS  
LOCK LED. The LED should either  
turn ON or OFF after hitting the CAPS  
LOCK key.  
Missing one of the primary  
colors (RED, GREEN, or  
BLUE)  
*Inspect the monitor’s video cable and  
make sure that none of the pins are  
bent.  
16  
LM914  
Screen image is not centered or sized *Adjust pixel frequency (CLOCK) and  
properly.  
Picture has color defects  
(white does not look white)  
FOCUS or press hot-key (AUTO)  
*Adjust RGB color or select a pre-set  
color temperature from OSD.  
Horizontal or vertical disturbances on *Use win 95/98 shut-down mode  
the screen  
Adjust CLOCK and FOCUS or  
perform hot- key (AUTO-key).  
CLOCK (pixel frequency) controls the number of pixels scanned by one  
horizontal sweep. If the frequency is not correct, the screen shows vertical  
stripes and the picture has not correct width.  
FOCUS adjusts the phase of the pixel clock signal. With a wrong phase  
adjustment the picture has horizontal disturbances in light picture.  
For FOCUS and CLOCK adjustment use “dot-pattern” or Win 95/98 shut-  
down mode pattern .  
17  
LM914  
ERROR MESSAGE & POSSIBLE SOLUTION  
NO SIGNAL  
1. Check that the signal-cable is properly connected , If the connector is  
loose, tighten the connector’s screws.  
2. Check the signal-cable’s connection pins for damage.  
INPUT NOT SUPPORT  
Your computer has been set to unsuitable display mode ,set the computer to  
display mode given in the following table.  
UNSUPPORTED MODE TRY DIFFERENT VIDEO CARD SETTING  
Your computer resolution is out of VESA-SPEC  
RESOLUTION  
VERTICAL  
RESOLUTION  
FREQUENCY  
640 × 400  
640 × 350  
720 × 400  
720 × 400  
640 × 480  
640 × 480  
640 × 480  
640 × 480  
800 × 600  
800 × 600  
800 × 600  
800 × 600  
800 × 600  
1024 × 768  
70Hz  
70Hz  
70Hz  
85Hz  
60Hz  
72Hz  
75Hz  
85Hz  
56Hz  
60Hz  
72Hz  
75Hz  
85Hz  
60Hz  
18  
LM914  
1024 × 768  
1024 × 768  
1024 × 768  
1280 × 1024  
1280 × 1024  
1280 × 1024  
1152 × 864  
1280 × 960  
1280 × 960  
640 × 480  
70Hz  
75Hz  
85Hz  
60Hz  
75Hz  
85Hz  
75Hz  
60Hz  
85Hz  
67Hz  
75Hz  
56Hz  
832 × 624  
640 × 400  
NOTE: For digital input, the resolution 1280 x 1024 @ 85Hz  
and 1280 x 960 @ 85Hz are not supported  
19  
LM914  
HOW TO INSTALL THE DRIVER-DISK (INF & ICM FILE)  
FOR FIRST TIME INSTALL :  
This is a Plug & Play LCD monitor. Turn off the PC then connect the  
cables. Power on the PC and it will automatically detect your new monitor.  
The Windows Operating system will automatically install a plug & play  
driver for it. If you would still like to install the driver included in the  
diskette that came with the monitor, log-on to our website at  
section.  
20  
LM914  
APPENDIX  
SPECIFICATIONS  
Driving system TFT Color LCD  
LCD Panel  
Input  
Size  
Pixel pitch  
Viewable angle  
Response time 25 ms ( Typical )  
Video  
48cm(19.0")  
0.294mm( H )x 0.294mm( V )  
170° (H) 170° (V)  
R,G,B Analog Interface  
Separate Sync. H/V TTL  
H-Frequency  
V-Frequency  
24KHz – 93KHz  
55-85Hz  
Display Colors  
Dot Clock  
16.7M Colors  
135MHz  
Max. Resolution  
Plug & Play  
1280 x 1024 @85Hz  
VESA DDC1/2BTM  
<60W  
ON Mode  
EPA ENERGY  
STAR®  
OFF Mode  
<5W  
Input Connector  
D-Sub 15pin  
Input Video Signal  
Analog:0.7Vp-p(standard),  
75 OHM, Positive  
DVI 24pin  
Input Connector  
Input Video Signal  
Maximum Screen Size  
Digital sigal  
Horizontal : 376.32mm  
Vertical : 301.056mm  
12VDC/5.0A 60W Max  
Operating Temp: 0° to 40°C  
Storage Temp.: -10° to 50°C  
Operating Humidity :  
20% to 90%  
Power Source  
Environmental  
Considerations  
Weight (N. W.)  
5.9Kgs Unit (net)  
432.00  
378.32  
198.15  
L901-a  
140.00  
250.00  
21  
LM914  
Switch  
Auto Adjust Key  
/ Brightness  
/ Contrast  
Power Button  
MENU/ Exit  
Volume  
External Controls:  
Functions  
Contrast  
Brightness  
Input Selected  
Focus  
Clock  
H-Position  
V-Position  
Auto-center  
Language  
Scaling Mode  
C1 ( 6500°K )  
C2 ( 7800°K )  
RGB Color temperature  
Recall  
Exit  
Power Consumption  
Audio  
Regulatory  
( Maximum )  
60 Watts  
2W + 2W rms (Stereo)  
UL, CSA, FCC, TÜV/GS, CE,  
ISO13406-2, Windows XP Logo  
Compliance  
22  
LM914  
FACTORY PRESET TIMING TABLE  
HORIZONTAL  
VERTICAL  
FREQUENCY  
STANDARD  
Dos-mode  
Dos-mode  
Dos-mode  
VGA  
RESOLUTION  
FREQUENCY  
640 × 400  
720 x 400  
31.47kHz  
31.47kHz  
31.47kHz  
31.47kHz  
35.00kHz  
37.50kHz  
37.86kHz  
37.879kHz  
46.875kHz  
35.16kHz  
48.01kHz  
49.725kHz  
48.363kHz  
56.476kHz  
60.021kHz  
64.000kHz  
80.000kHz  
91.146kHz  
79.976kHz  
60.000kHz  
80.000kHz  
70.0Hz  
70.0Hz  
70.0Hz  
60.0Hz  
66.6Hz  
75.0Hz  
72.0Hz  
60.0Hz  
75.0Hz  
56.0Hz  
72.0Hz  
75.0Hz  
60.0Hz  
70.0Hz  
75.0Hz  
60.0Hz  
75.0Hz  
85.0Hz  
75.0Hz  
60.0Hz  
85.0Hz  
720 x 400  
640 × 480  
640 × 480  
640 × 480  
640 × 480  
800 × 600  
800 × 600  
800 × 600  
800 × 600  
832 × 624  
1024 × 768  
1024 × 768  
1024 × 768  
1280 × 1024  
1280 × 1024  
1280 × 1024  
1152 × 864  
1280 × 960  
1280 × 960  
SVGA  
XGA  
SXGA  
Note: The factory preset mode for DOS is 720x400 @70Hz.  
23  
LM914  
CONNECTOR PIN ASSIGNMENT  
1
6
5
10  
15  
11  
15 - Pin Color Display Signal Cable  
PIN NO.  
DESCRIPTION  
PI N NO.  
DESCRIPTION  
+5V  
Detect Cable  
NC  
DDC-Serial Data  
H-Sync  
V-Sync  
1.  
2.  
3.  
4.  
5.  
6.  
7.  
8.  
Red  
Green  
Blue  
Ground  
Ground  
R-Ground  
G-Ground  
B-Ground  
9.  
10.  
11.  
12.  
13.  
14.  
15.  
DDC-Serial Clock  
24 - Pin Color Display Signal Cable  
PIN NO.  
DESCRIPTION  
PI N NO.  
DESCRIPTION  
1.  
2.  
3.  
TMDS Data 2-  
TMDS Data 2+  
TMDS Data 2/4  
Shield  
13.  
14.  
15.  
TMDS Data 3+  
+5V Power  
Ground(for+5V)  
4.  
5.  
6.  
7.  
TMDS Data 4-  
TMDS Data 4+  
DDC Clock  
16.  
17.  
18.  
19.  
Hot Plug Detect  
TMDS Data 0-  
TMDS Data 0+  
TMDS Data 0/5  
Shield  
DDC Data  
24  
LM914  
8.  
9.  
10.  
11.  
N.C.  
20.  
21.  
22.  
23.  
TMDS Data 5-  
TMDS Data 1-  
TMDS Data 1+  
TMDS Data 1/3  
Shield  
TMDS Data 5+  
TMDS Clock Shield  
TMDS Clock +  
12.  
TMDS Data 3-  
24.  
TMDS Clock -  
25  

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