User’s Manual
26
3.
Switch MUTE off by using the
button.
4.
Connect external speakers and
adjust the volume to a suitable
level.
Some picture elements
do not light up
Some pixels of the display may not turn
on.
This display is manufactured using an
extremely high level of precision
technology: however, sometimes
some pixels of the display may not
display. This is not a malfunction.
After-Images can still be
seen on the display after
the display is powered
off. (Examples of still
pictures include logos,
video games, computer
images, and images
displayed in 4:3 normal
mode)
A still picture is displayed for an over
extended period of time
.
Do not allow a still image to be
displayed for an extended period of
time as this can cause a permanent
after-image to remain on the display.
The display has
horizontal or vertical
interference
—
Enter VGA setting which under
picture option of OSD MENU to do
auto adjust or adjust frequency /
phase.
Image deviation from
the center of the display
or size error
—
Enter VGA setting which under
picture option of OSD MENU to do
auto adjust then adjust horizontal
/vertical position if needed.
Summary of Contents for DHI-LM55-F400
Page 1: ...DHI LM55 F400 User s Manual V1 0 0 ZHEJIANG DAHUA VISION TECHNOLOGY CO LTD...
Page 8: ...User s Manual II Troubleshoot 28 Cybersecurity Recommendations 30...
Page 19: ...User s Manual 11 3 2 Connecting a PC 3 2 1 Using HDMI video input 3 2 2 Using VGA input...
Page 41: ...User s Manual...