Lenovo ThinkPad T420si (English) User Guide - Page 71

Using the DVI monitor, Mini Dock Series 3, or a ThinkPad Mini Dock Plus Series 3 170 W

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3. Press Fn+F7 to change the display output location to the external monitor. 4. Right-click on the desktop, and click Properties to open the Display Properties window. 5. Click the Settings tab. 6. Click Advanced. 7. Click the Monitor tab. Check the monitor information window to make sure that the monitor type is correct. If it is, click OK to close the window; otherwise do as follows. 8. If more than two monitor types are displayed, select Default Monitor. 9. Click Properties. 10. Click the Driver tab. 11. Click Update Driver. The Hardware Update Wizard appears. 12. Click No, not this time, and then click Next. 13. Select Install from a list or specific location (Advanced), and then click Next. 14. Select Don't search. I will choose the driver to install, and then click Next. 15. Clear the Show compatible hardware check box. 16. Select Manufacturer and Model for your monitor. If you cannot find your monitor in the list, stop the installation of this driver and use the driver shipped with your monitor. 17. After updating the driver, click OK to close the Properties window. 18. Set Colors and Screen area in the Display Properties window. 19. Click OK. Considerations for attaching an external monitor • When installing an operating system, you must install the display driver for your monitor that is supplied with the computer, and the Monitor INF file that is supplied with the external monitor. • If you set a resolution higher than the resolution you are using on the panel, and use a panel that does not support that resolution, take advantage of the virtual screen function, which enables you to display only a part of the high-resolution screen image your computer produces. You can see other parts of the image by moving the screen with the TrackPoint or other pointing device. • If the external monitor you are using is outdated, the resolution and the refresh rate may be limited. Using the DVI monitor If your computer has one of the optional expansion units, a ThinkPad Mini Dock Plus Series 3, a ThinkPad Mini Dock Series 3, or a ThinkPad Mini Dock Plus Series 3 (170 W), you can use the Digital Visual Interface (DVI) monitor through the DVI connector of that unit. Notes: • The screen mode that can be used depends on the specifications of the DVI monitor. • Before you attach the DVI monitor, make sure that the computer is attached to the expansion unit and the system works properly. To attach the DVI monitor, do as follows: 1. Turn off the computer. 2. Connect the DVI monitor to the DVI connector of the expansion unit, and then connect the monitor to an electrical outlet. 3. Turn on the DVI monitor and the computer. The system starts. If the computer output does not appear on the DVI monitor, do as follows: For a computer that supports NVIDIA Optimus Graphics: Chapter 2. Using your computer 55

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3. Press Fn+F7 to change the display output location to the external monitor.
4. Right-click on the desktop, and click
Properties
to open the Display Properties window.
5. Click the
Settings
tab.
6. Click
Advanced
.
7. Click the
Monitor
tab. Check the monitor information window to make sure that the monitor type is
correct. If it is, click
OK
to close the window; otherwise do as follows.
8. If more than two monitor types are displayed, select
Default Monitor
.
9. Click
Properties
.
10. Click the
Driver
tab.
11. Click
Update Driver
. The Hardware Update Wizard appears.
12. Click
No, not this time
, and then click
Next
.
13. Select
Install from a list or specific location (Advanced)
, and then click
Next
.
14. Select
Don't search. I will choose the driver to install
, and then click
Next
.
15. Clear the
Show compatible hardware
check box.
16. Select
Manufacturer
and
Model
for your monitor. If you cannot find your monitor in the list, stop the
installation of this driver and use the driver shipped with your monitor.
17. After updating the driver, click
OK
to close the Properties window.
18. Set
Colors
and
Screen area
in the Display Properties window.
19. Click
OK
.
Considerations for attaching an external monitor
•
When installing an operating system, you must install the display driver for your monitor that is supplied
with the computer, and the Monitor INF file that is supplied with the external monitor.
•
If you set a resolution higher than the resolution you are using on the panel, and use a panel that does not
support that resolution, take advantage of the virtual screen function, which enables you to display only a
part of the high-resolution screen image your computer produces. You can see other parts of the image
by moving the screen with the TrackPoint or other pointing device.
•
If the external monitor you are using is outdated, the resolution and the refresh rate may be limited.
Using the DVI monitor
If your computer has one of the optional expansion units, a ThinkPad Mini Dock Plus Series 3, a ThinkPad
Mini Dock Series 3, or a ThinkPad Mini Dock Plus Series 3 (170 W), you can use the Digital Visual Interface
(DVI) monitor through the DVI connector of that unit.
Notes:
•
The screen mode that can be used depends on the specifications of the DVI monitor.
•
Before you attach the DVI monitor, make sure that the computer is attached to the expansion unit and
the system works properly.
To attach the DVI monitor, do as follows:
1. Turn off the computer.
2. Connect the DVI monitor to the DVI connector of the expansion unit, and then connect the monitor
to an electrical outlet.
3. Turn on the DVI monitor and the computer. The system starts.
If the computer output does not appear on the DVI monitor, do as follows:
For a computer that supports NVIDIA Optimus Graphics:
Chapter 2
.
Using your computer
55