Dell Dimension 8250 Series, Owner'S Manual

Page: 57 / 156

Solving Problems 57
If the screen is difficult to read
C
HE C K T H E M ON I T O R C A B L E C O N NE C T IO N
— Check the connector for
bent or broken pins. (It is normal for monitor cable connectors to have missing
pins.)Ensure that the video cable is connected as shown on the setup diagram for
your computer.
T
E S T T HE EL E CT R I C AL O U T L E T
— Ensure that the electrical outlet is
working by testing it with another device, such as a lamp.
S
W AP THE P O W E R C A B L E S
— Swap the computer and monitor power
cables to determine if the power cable is defective.
T
E S T T HE VI D E O EX T E N S IO N CA B LE
(
IF U S E D
) — If you are using a
video extension cable and removing the cable solves the problem, the cable is
defective.
T
E S T A N O T HE R MO N ITO R
—
If another monitor is available, connect it to
the computer.
C
HE C K T H E D I AG N O S T I C L I G H T S
—
See page 60.
C
HE C K T H E M ON I T O R S E T T I N G S
—
See the monitor documentation for
instructions on adjusting the contrast and brightness, demagnetizing
(degaussing) the monitor, and running the monitor self-test.
M
O V E T H E S UB W O O F E R A W A Y F RO M THE MO N ITO R
— If your speaker
system includes a subwoofer, ensure that the subwoofer is at least 60 cm (2 ft)
away from the monitor.
M
O V E T H E M O NI T O R A W A Y F RO M EXT ER N AL P O W E R S O U R C E S
—
Fans, fluorescent lights, halogen lamps, and other electrical devices can cause the
screen image to appear "shaky." Turn off nearby devices to check for interference.
R
O T AT E T H E M O NI T O R T O F A C E A D IF F E R EN T D IR E C T IO N
— Eliminate
sunlight glare, which can cause poor picture quality.