Owner's Manual

A20
Troubleshooting
Symptom:
SELF DIAGNOSTICS
message.
Possible causes:
The
signal
cable is not connected.
Symptom:
OUT OF
FREQUENCY
message appears.
Possible causes:
The
frequency
of the
sync input
is outside the
operating range
of
the monitor.
HORZ: 30kHz-70kHz
VERT:
50Hz-120Hz
Use the
graphics
board's
utility
software to
change
the
frequency
setting(Refer
to the manual for
graphics board)
Symptom:
The
power
LED
is illuminated amber
Possible causes:
Display power management
mode.
These is no
sync signal.
The
signal
cable is not fastened
securely.
Check the
computer power
and
graphics adapter configuration.
The
signal
cable is
incorrectly configured
or connected. Refer to
Signal
connector
pin assignment
on
page
22
for reference.
Symptom:
The
image
on the SCREEN is not
centered,
or too
small,
or not a
rectangle shape.
Possible
Causes:Image adjustment
not been done
yet
in
the current
operating
mode. Use the SELECT and or buttons to set the
image
to
your liking.
Symptom:The
monitor doesn't enter the
power saving
off mode
(Amber LED).
Possible
Causes:Computer
video
signal
is not VESA DPMS
standard. Either the PC or the video controller card is not
using
the
VESA DPMS
power management
function.
HF:120.8kHz
VF:110.0Hz
OPERATING
FREQUENCY
HF: 30
-
70kHz
VF: 50
-
120Hz