4. Use or to select
Clock
and
Phase
adjustment.
· Clock
(pixel frequency) adjusts the number of pixels scanned by one horizontal
sweep. If the frequency is not correct, the screen shows vertical stripes and the
picture does not have the correct width.
· Phase
adjusts the phase of the pixel clock signal. With a wrong phase adjustment,
the picture has horizontal disturbances in light picture.
5. When the image no longer looks distorted, press Enter to save the adjustments of
Clock and Phase.
6. Press
to leave the OSD menu.
Manually installing the monitor driver
Below are steps for manually installing the monitor driver in Microsoft® Windows
Vista, Microsoft Windows 7®, Microsoft Windows 8/Windows 8.1 and
Microsoft Windows 10 Professional.
Installing the monitor driver in Windows Vista
To install the monitor driver in Microsoft® Windows Vista, do the following:
1.
Turn off the computer and all attached devices.
2.
Ensure that the monitor is connected correctly.
3.
Turn on the monitor and then the system unit. Allow the system to boot into
Windows Vista operating system.
4.
Find the driver of the corresponding monitor model from Lenovo’s website:
http://support.lenovo.com/
us/en/documents/
T2
2
5
4
pC, and download it to the host
connected to this monitor for temporary storage (as shown in the figure on the desktop).
5.
Click Start
Control Panel
, and then click the
Hardware and Sound
icon
6.
Click the
Personalization
icon.
7.
Click the
Display Settings
icon.
8.
Click the
Advanced Settings
button.
9.
Click the
Monitor
tab.
10.
Click the
Properties
button.
11. If the "
Windows needs your permission to continue
" window appears, click
on Continue button. Then click the
Driver
tab.
12. Open the “
Update Driver Software-Generic PnP Monitor
” window by
clicking on
Update Driver
. and then click the “
Browse my computer for
driver software
” button.
13. Select “
Let me pick from a list of device drivers on my computer
”.
14.
Click the “
Install from the disk
” button, click on the “Browse” button, and then navigate
to
the following directory:
X \ Monitor Drivers \ Windows Vista
(Here,
X
stands for “the folder in which the downloaded driver locates” (such as desktop)
15.
Select the "T2
2
5
4
pC.inf
" file and click the
Open
button. Click the
OK
button.
16.
Select “
Lenovo T2254pC
” in the new window and then click “Next”.
17.
After the installation is complete, delete the downloaded program files, and close all the
windows.
1
8
.
Restart the system.
Note:
On LCD monitors, unlike CRTs, a faster refresh rate does not improve display
quality. Lenovo recommends using either 1680 x 1050 at a refresh rate of 60
Hz, or 640 x 480 at a refresh rate of 60 Hz.
Chapter 3.
Reference information
3-5
