Service manual

If the monitor sync processing circuits are
designed around the 3.3 volt logic family, then
the sync inputs must be 5 volt tolerant.
1.4.5 Sync Signal Loading
TTL input loading shall be equivalent to one TTL
input load. When logic 0 is asserted by a sync
input, the maximum current source from any
single monitor sync input to the driver is 1.6 mA.
When logic 1 is asserted, the maximum current
source from the driver to any single monitor sync
input is 400 mA.
1.4.6 Abnormal Signal Immunity
The monitor shall not be damaged by improper
sync timing, pulse duration, or absence of sync,
or abnormal input signal amplitude (video and/or
sync too large or too small), or any other
anomalous behavior of a graphics card video
generator when changing modes or when any
combination of input signals is removed or
replaced. Additionally, under these conditions,
the monitor shall not cause damage to the driving
source.
1.5 User Controls and Indicators:
1.5.1 Power On / Off Switch: The monitor shall have a
power control switch visible and accessible on
the front of the monitor. The switch shall have no
effect on the operation of the AC/DC converter.
Instead, it shall interrupt the DC supply to the
monitor.
1.5.2 Power Indicator LED: The monitor shall make
use of a LED type indicator located on the front of
the monitor. The LED color shall indicate the
power states as given in Table 1.
1.5.3 On-Screen Display: The On Screen Display
system shall be used, controlled by a select
button (SELECT), a menu button (MENU), a plus
(+) button and a minus (-) button. If the buttons
remain untouched for OSD turn off time while
displaying a menu, the firmware shall save the
current adjustments and exit. Also, if the video
controller changes video mode while the OSD is
active, the current settings shall be saved
immediately, the OSD turned off, and the new
mode is displayed.
1.5.4 Key Function Overview: All functions are controllable
by OSD using five buttons including Power button,
Menu/Exit, Select, Left, and Right on the front bazel.
1.5.5 Menu Operation
Pressing the MENU button the first time brings up the
first menu level. The (MENU) button is used to enter
and exit the OSD menu.
1.5.6 OSD Function- Normal Mode
Table 1
LED Color
Power-ON Mode Green
Power Saving Mode Amber
Power Button To turn ON or OFF the Power.
Menu/Exit Button To enter or exit OSD Menu.
To move downward in the OSD Item.
Act as DDC enable and disable switching Hot-
Key when OSD is not display.
Choose the previous OSD Menu Item.
To decrease the value of the parameter in the
adjust bar, which has been selected for
adjustment.
Choose the next OSD Menu Item.
To increase the value of the parameter in the
adjust bar, which has been selected for
adjustment.
Act as Auto Adjustment Hot-Key when OSD is
not displayed.
Select Button
Left Button
Right Button
Icon Item Function Description
Brightness Adjust the background screen brightness by using backlight inverter.
Contrast Adjust the image contrast by controlling analog signal gain.
Color Temperature
Press ‘Right’ or ‘Left’ to select sRGB, Reddish, Bluish and User preset.
Only when selecting User, you can make adjustment to the R/G/B
content, otherwise not.
Horizontal Size
Adjust the horizontal Image Size. When the value is increased, the
width of display image wider, and when the value is decreased, the
width becomes narrows.
Fine
To increase or decrease the snow noise of image. Adjust the delay of internal
clock to control the display focus.
Left/Right Adjust the horizontal Image Position.
Down/Up Adjust the Vertically Image Position
Auto Adjust
Press ‘Right Key’ to turn on this function. The Auto-Adjust will automatically
adjust H-Position, V-Position, H-Size and Fine to the optimal value, the whole
process takes about 3 seconds.
Language
Select a language of OSD Menu. User can select language from 11 Languages;
they are English, French, German, Spanish, Japanese, Simple Chinese,
Traditional Chinese, Korean, Portuguese and Russian, Turkish.
Factory Reset Reset all users setting to factory preset value except language selection.
OSD Timeout
Select OSD Menu turn off time. when “30 seconds” is selected,
OSD shall be turned off automatically after 30
Seconds from the last key operation.
OSD Left/Right
To move the OSD position horizontally on the screen. When the
‘Right’ Key is pressed, the OSD control menu to move to the
right side of sreen.Likewise, when the ‘Left’ key is pressed, the
OSD control menu to move to the left side of screen.
OSD Down/Up
To move the OSD position vertically on the sreen.when the ‘Right’ Key is
pressed, the OSD control menu to move to the up side of sreen.Likewise, when
the ‘Left’ key is pressed, the OSD control menu to move to the down side of
screen.
Information Indicates the current resolution.
1. Product Specification (continued)
4
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ACER AL1716W