Lenovo T54H User Manual
Page 23
 
24
Screen is blank 
and power 
indicator is 
Flashing green 
every 0.5 
second
The monitor is 
not receiving 
a video signal
Check that the signal
cable is firmly connected to 
the computer.
Check that no pins are
bent in the signal cable 
connector.
Connecting 
your Monitor
section on 
page 5
Display mode 
of the 
computer is 
outside the 
range of the 
monitor
Reconfigure the
computer to use a 
supported display mode.
Further 
Information
section on 
page 21
Screen is blank 
and power 
indicator is 
flashing amber 
every 0.5 or 1 
second
The monitor is 
in the Power 
Management 
Suspend or 
Off state
Press any key on the
keyboard or move the 
mouse to restore 
operation.
Check the Power
Management software on 
your computer.
Power 
Management 
section on 
page 23
Image appears 
to be smeared
There are 
noises in the 
video signal
Run Auto Setup.
If auto setup is not
successful, select IMAGE 
LOCK menu in the OSD. 
Then select MANUAL to 
adjust FINE/COARSE 
settings.
.
User 
controls
section on 
page 14
Image appears 
to be 
discolored
The Color 
setting may 
be incorrect
Adjust the Color
settings.
User 
controls
section on 
page 14
A few dots are 
missing, 
discolored, or 
inappropriately 
lighted.
The LCD contains over 2,300,000 thin-
film transistors (TFTs). A small number of 
missing, discolored, or lighted dots may be 
present on the screen, which is an intrinsic 
characteristic of the TFT LCD technology 
and is not an LCD defect.
Problem
Possible
Cause
Suggested Action
Reference
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