Logo - Acer AL1721h Service Manual

4.)

Logo:

When the monitor is power on, the LOGO will be showed in the center, and disappear slowly.
How To Optimize The DOS-Mode
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.
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