Lenovo 1173-HB1 Manuel de l'utilisateur - Page 21
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Table 3-2. Troubleshooting
Problem
The power
indicator is white,
but there is no
image
One or more of
the pixels appear
discolored
•
Fuzzy lines
in text or a
blurry
image
•
Horizontal
or vertical
lines
through the
image
Manual image setup
If automatic image setup does not establish the image that you prefer, perform
manual image setup.
Note: Have your monitor powered on for about 15 minutes, until the monitor warms
up.
1.
Press
at the bottom of the monitor to open the OSD menu.
2.
Use
or
3.
Use
or
•
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.
4.
When the image no longer looks distorted, save the Clock and Phase adjustments.
5.
Press
to leave the OSD menu.
Possible cause
Suggested action
The video signal cable
Be sure the video cable is
is loose or
connected with the
disconnected from the
system properly
system or monitor
The monitor
Adjust the brightness and
brightness and
contrast setting on the
contrast are at the
OSD menu
lowest setting
This is a characteristic
If there are more than five
of the LCD
pixels missing, contact
technology and is not
the Support Center
an LCD defect
•
Image setup has
Adjust the resolution
not been
settings on your system
optimized
to match the native
resolution for this
•
Your system
monitor: 1600 x 900 at 60
Display
Hz
Properties setting
have not been
Perform automatic image
optimized
setup. If automatic image
setup does not help,
perform manual image
setup
When working in the
native resolution, you
may find additional
improvements by
adjusting the Dots Per
Inch (DPI) setting on your
system
to select
and press
to access.
to select Clock and Phase adjustment.
Reference
"Connecting and
turning on your
monitor" on page 1-3
"Adjusting your
monitor image" on
page 2-3
Appendix A,
"Service and
Support," on page
A-1
"Adjusting your
monitor image" on
page 2-3
"Manual image
setup"
"Selecting a
supported display
mode" on page 2-7
See the Advanced
section of your
system's display
properties
Chapter 3.
3-3