Sony HMD-A240 - Manual (Page 6)

6
Technical Features
Preset and user modes
When the monitor receives an input signal, it automatically matches the
signal to one of the factory preset modes stored in the monitor’s memory to
provide a high quality picture
(see “Preset mode timing table” on page i) .
For input signals that do not match one of the factory preset modes, the
digital Multiscan technology of this monitor ensures that a clear picture
appears on the screen for any timing in the monitor’s frequency range (For
A240 horizontal: 30 – 70 kHz, vertical: 48 – 120 Hz and for A440
horizontal: 30 – 96 kHz, vertical: 48 – 170 Hz). If the picture is adjusted, the
adjustment data is stored as a user mode and automatically recalled
whenever the same input signal is received.
Power saving function
This monitor meets the power-saving guidelines set by VESA, E NERGY
S TAR, and NUTEK. If no signal is received by the monitor from your
computer, the monitor will automatically reduce power consumption as
shown below.
* When your computer is in active off mode, MONITOR IS IN POWER
SAVE MODE appears on the screen if you press any button on the
monitor. After a few seconds, the monitor enters the power saving
mode again.
Troubleshooting
x No picture
If the 1 (power) indicator is not lit
• Check that the power cord is properly connected.
• Check that the 1 (power) switch is in the “on” position.
The 1 (power) indicator is orange
• Check that the video signal cable is properly connected and all plugs
are firmly seated in their sockets.
• Check that the HD15 video input connector’s pins are not bent or
pushed in.
• Check that the computer’s power is “on”.
• The computer is in power saving mode. Try pressing any key on the
computer keyboard or moving the mouse.
• Check that the graphic board is completely seated in the proper bus
slot.
If the 1 (power) indicator is green or flashing orange
• Use the Self-diagnosis function.
x Picture flickers, bounces, oscillates, or is scrambled
• Isolate and eliminate any potential sources of electric or magnetic
fields such as other monitors, laser printers, electric fans, fluorescent
lighting, or televisions.
• Move the monitor away from power lines or place a magnetic shield
near the monitor.
• Try plugging the monitor into a different AC outlet, preferably on a
different circuit.
• Try turning the monitor 90° to the left or right.
• Check your graphics board manual for the proper monitor setting.
• Confirm that the graphics mode and the frequency of the input signal
are supported by this monitor (see “Preset mode timing table” on
page i). Even if the frequency is within the proper range, some
graphics board may have a sync pulse that is too narrow for the
monitor to sync correctly.
• Adjust the computer’s refresh rate (vertical frequency) to obtain the
best possible picture.
x Picture is fuzzy
• This monitor has a high luminance mode, so small characters may
not appear clearly if the monitor receives signals over 1280
×
1024
resolution. If this occurs, lower the contrast or set the computer to a
lower resolution.
• Adjust the brightness and contrast.
• Degauss the monitor.*
• Adjust for minimum moire.
x Picture is ghosting
• Eliminate the use of video cable extensions and/or video switch
boxes.
• Check that all plugs are firmly seated in their sockets.
x Picture is not centered or sized properly
• Adjust the size or centering. Note that with some input signals and/or
graphics board the periphery of the screen is not fully utilized.
• Just after turning on the power switch, the size/center may take a
while to adjust properly.
x Edges of the image are curved
• Adjust the geometry.
x Wavy or elliptical pattern (moire) is visible
• Adjust for minimum moire.
• Change your desktop pattern.
Power mode Power consumption
A240 A440 1 (power)
indicator
normal operation
≤
100 W
≤
130 W green
active off*
≤
3 W
≤
3 W orange
power off 0 W (Approx.) 0 W (Approx.) off