ATMT HL900D Service manual

User’s Reference
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HL900D/HL901D/HL900A/HL901A
P/N : 97E9500280

1
Contents
1. Precautions 2
2. Items 4
3. Setting up t e LCD monitor 5
How to connect t e power cord and t e several cables to t e LCD monitor. 5
Plug & Play 5
Warm-up Time 5
4. Adjusting T e Monitor 6
How to use t e Function Key. 6
Main OSD Menu 6
PICTURE 7
COLOR 7
OSD 7
MISC 7
MWE 7
5. Appendix 8
Display Modes 8
15-pin D-Sub Connector 9
DVI-D Connector 9
Power Saver 10
6. Troubles ooting 11

32
Precautions
1
AC outlet
Power cord
Warning : The following information will help you avoid the risk of electric shock, serious injury, and death.
Plug the power cord into a
properly grounded outlet.
There is the risk of electric
shock.
Do not unplug from the outlet
y pulling the power cord or
when your hands are wet.
There is the risk of electric
shock and fire.
Do not allow any o ject or liq-
uid to enter inside the monitor.
There is the risk of electric
shock, fire, or damage to the
monitor.
Do not end the power cord
excessively or place heavy o jects
on it. Keep children and pets away
from the power cord as they may
damage the power cord. There is
the risk of electric shock and fire.
Do not use a damaged power
cord or plug. Make sure the
plug fits snugly into the outlet.
There is the risk of electric
shock or fire.
Do not expose the monitor to
the direct sun light.
Keep the monitor away from high
temperature, humidity, and dust.
■Operating environment
=0~35degrees Celsius
■Operating environment
=30~80relative humidity.
Do not lock the fan louvers.
There is the risk of fire or dam-
age to the monitor.
220V
Use a proper voltage/current
level indicated
Do not clean the LCD with
a rasive chemicals.
There is the risk of damage to
the LCD.
Do not scratch and damage
the LCD with sharp o jects.
Keep the monitor away from
o jects and electrical appli-
ances that may generate elec-
tromagnetic fields.
Place the monitor on a flat, sta-
le surface. The monitor may
fall and there is the risk of
damage or injury
Unplug the power cord when
the monitor is not in use for a
prolonged period of time.
If you hear a noise or smell
smoke from the computer or
adaptor, unplug the power cord
immediately, and call the service
center. There is the risk of elec-
tric shock or fire.
Do not overload an electrical
outlet with too many devices.
There is the risk of fire.
Do not attempt to disassem le,
fix, or modify the monitor.
There is the risk of electric
shock or fire.
Caution : The following information will help you avoid the risk of minor or moderate injury, or damage to the monitor.

54
Items
2
Please make sure the following items are included with your monitor.
If any items are missing, contact your dealer.
Notice
User Manual
15-pin D-Sub Signal
Cable
DVI-D Cable (Option) Audio Cable
Stand ※
Pus t e ook until
anging
LCD Monitor Power cord
Setting up the LCD monitor
3
How to connect the power cord and the several cables to the LCD monitor.
Power
PC
DVI (Option)
SPK IN
SPK OUT
Power Cord
15-pin D-Su Signal Ca le
DVI-D Ca le*1
Audio Ca le*2
External Speaker Ca le*2
No. Ca le connectionsName
All LCD monitors need time to ecome thermally sta le whenever you turn on the
monitor after letting the monitor e turned off for a couple of hours. Therefore, to
achieve more accurate adjustments for parameters, allow the LCD monitor to e
warmed up for at least 30 minutes efore making any screen adjustments.
Warm-up Time
The adoption of the new VESA Plug and Play solution eliminates complicated and
time consuming setup. It allows you to install your monitor in a Plug and Play compati-
le system without the usual hassles and confusion. Your PC system can easily identi-
fy and configure itself for use with your display. This monitor automatically tells the PC
system its Extended Display Identification Data (EDID) using Display Data Channel
(DDC) protocols so the PC system can automatically configure itself to use the flat
panel display.
Plug & Pla
*1 : For DVI Model Only. *2 : For Audio Model Only.
*1 : For Audio Model Only.
*1
1
2
3
4
5

76
Adjusting The Monitor
4
How to use the Function Ke .
When you push the menu utton, you can see elow main OSD menu.
Main OSD Menu
●BRIGHTNESS : Changes the overall light intensity of the images eing displayed.
●CONTRAST :
Changes the ratio of light intensity etween the rightest white and darkest lack.
●H POSITION : Moves to the Left/Right.
*1
●V POSITION : Moves to the Top/Bottom.
*1
●PHASE : When image is not clear, you can use clock/phase menu.
*1
●CLOCK : When image is not clear, you can use clock/phase menu.
*1
●AUTO ADJUST : You can select AUTO ADJUST”, this will optimize image quality automatically.
*1
PICTURE
BRIGHTNESS
CONTRAST
H POSITION
V POSITION
PHASE
CLOCK
AUTO ADJUST NO
COLOR
Color adjustment needs to be onl for Analog mode.
●COLOR : There are user, luish and reddish modes.
In case user has to set up RED”, GREEN”, BLUE in person, please select
user mode.
●RED,GREEN,BLUE : You can adjust red, green and lue values that you want.
●AUTO COLOR : Automatic adjust color(white level) for various input sources white level.
OSD
●OSD H POSI : Moves the OSD menu to the horizontal direction.
●OSD V POSI : Moves the OSD menu to the vertical direction.
●OSD TIMER : Shows the OSD Time displays from 10 to 40 sec.
●TRANSPARENCY : You can adjust OSD Transparency.
MISC
●LANGUAGE : Selects language in OSD menu.
●RECALL :
Discards current setting and replaced all parameters with the factory default values.
●INPUT SELECT : You can change the display mode.(Analog ↔Digital)
●AUDIO : Sound Mute On/Off function.
*2
●VOLUME : You can adjust the volume.
*2
Notice : The first set-up was done when the goods are released from the factory.
After finishing the first set-up, please press Auto and optimize the screen.
MWE
When ou press MWE button, ou can get into the following picture.
●ENTERTAIN : Movies, Video games
●TEXT : Documents
●INTERNET : Internet
●NORMAL : Normal
MENU : 1. First click : The OSD main menu appears.
2. Second click : The OSD menu disappears.
AUTO : When you push Auto utton, this will optimize image quality automatically.
MODE : You can change the display mode. (PC ↔DIGITAL)*1
MUTE : Sound Mute On/Off utton.*2
SEL : Select a command function.
VOL : You can adjust the volume.*2
MWE : You can manually adjust the screen to your environment on the computer.
Ex) Internet, Games, Movies...
Power : Power On/Off toggle utton.
: 1. Move the on-screen highlighted command item to the next one.
2. Decrease the current option value.
: 1. Move the on-screen highlighted command item to the Previous one.
2. Increase the current option value.
*1 : For DVI Model Only. *2 : For Audio Model Only.
*1 : For Analog Mode Only.
*2 : For Audio Model Only.

8
Appendix
5
Displa Modes
※The optimal resolution is 1280×1024@60Hz *1 : For Analog Model Only.
Mode
VGA
SVGA
XGA
640 X 480
720 X 400
800 X 600
1024 X 768
Resolution
31.468
Horizontal
Frequency(KHz)
Vertical
Frequency(Hz)
Pixel Clock
Frequency(MHz)
Sync
Polarity(H/V)
31.468
35.000
37.500
37.879
48.077
46.875
48.363
56.476
60.023
70.087
59.940
66.670
75.000
60.300
72.188
75.000
60.004
70.000
75.029
28.322
25.175
30.240
31.500
40.000
50.000
49.500
65.000
75.000
78.750
-/+
-/-
-/-
-/-
+/+
+/+
+/+
-/-
-/-
+/+
SXGA 1280 X 1024
63.981
79.976
*1
60.020
75.025
*1
108.000
135.000
*1
+,-/+,-
+/+
*1
9
15-pin D-Sub Connector
●Input signal : Analog RGB
●15-pin D-Su connector
DVI-D Connector
●Input signal : Digital
●DVI-D Connector
Pin No.
1
2
3
4
5
Analog Red Input
Analog Green Input
Analog Blue Input
Ground
DDC Ground
Pin No.
6
7
8
9
10
Signal Name
Analog Red Ground
Analog Green Ground
Analog Blue Ground
No Connect
Sync Ground
Signal Name Pin No.
11
12
13
14
15
Ground
DDC Data
Horizontal Sync
Vertical Sync
DDC Clock
Signal Name
Pin No.
1
2
3
4
5
6
7
8
TMDS DATA2-
TMDS DATA2+
DGND
NC
NC
DDC CLOCK
DDC DATA
Analog vertical Sync
Pin No.
9
10
11
12
13
14
15
16
Signal Name
TMDS DATA1-
TMDS DATA1+
DGND
NC
NC
+5V POWER
AGND
NC
Signal Name Pin No.
17
18
19
20
21
22
23
24
TMDS DATA-
TMDS DATA+
DGND
NC
NC
DGND
TMDS CLOCK+
TMDS CLOCK-
Signal Name
15-pin D-Su Signal Ca le
DVI-D Ca le

1110
Troubleshooting
What ou see
Ensure that the power cord is firmly connected and the LCD
monitor is on.
“VIDEO MODE NOT
SUPPORTED” message
“NO SIGNAL” message
Screen is lank and power indictor
is off
�Check the maximum resolution and the frequency of the
video adaptor.
�Compare these values with the data in the Display Modes
Timing Chart.
�Ensure that the signal ca le is firmly connected to the PC
or video sources.
�Ensure that the PC or video sources are turned on.
The image is too light or too dark �Adjust the Brightness and Contrast.
�Refer to the Brightness/Contrast
The image color is not good
�Adjust the Color
�Refer to the Color
Image is not centered on the
screen �Executes Auto Adjustment.
Screen is lank and power indicator
light is steady am er or links
every 0.5 or 1 seconds
�The monitor is using its power management system.
�Move the computer’s mouse or press a key on the key-
oard.
Image is not sta le and may
appear to vi rate
�Check that the display resolution and frequency from your
PC or video oard is an availa le mode for your monitor.
On your computer check : Control Panel, Display, Settings
�Note : Your monitor supports multiscan display functions
within the following frequency domain:
Suggested Actions
6
This monitor has a uilt-in power management system called PowerSaver. This sys-
tem saves energy y switching your monitor into a low-power mode when it has not
een used for a certain amount of time. The monitor automatically returns to normal-
operation when you press a key on the key oard. For energy conservation, turn your
monitor OFF when it is not needed, or when leaving it unattended for long periods.
Power Saver
ON Under 40W
-
Green
State Power
consumption
Recovery
Time LED Color
OFF Less than 2W Within2 sec Am er