Sony SDM-HS53 - Manual (Page 19)

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Self-diagnosis function
This monitor is equipped with a self-diagnosis function. If there is
a problem with your monitor or computer(s), the screen will go
blank and the 1 (power) indicator will either light up in green or
flash orange. If the 1 (power) indicator is lit in orange, the
computer is in power saving mode. Try pressing any key on the
keyboard or moving the mouse.
If the picture disappears from the screen and the
1 (power) indicator is green
1 Turn off the 1 (power) switch and disconnect the
video signal cables from the monitor.
2 Turn the monitor on by pressing the 1 (power)
switch.
If all four color bars appear (white, red, green, blue), the monitor
is working properly. Reconnect the video signal cables and check
the condition of your computer(s).
If the color bars do not appear, there is a potential monitor failure.
Inform your authorized Sony dealer of the monitor’s condition.
If the picture disappears from the screen and the
1 (power) indicator is flashing orange
Press the 1 (power) switch twice to turn the monitor off
and then on.
If the 1 (power) indicator lights up in green, the monitor is
working properly.
If the 1 (power) indicator is still flashing, there is a potential
monitor failure. Count the number of seconds between orange
flashes of the 1 (power) indicator and inform your authorized
Sony dealer of the monitor’s condition. Be sure to note the model
name and serial number of your monitor. Also note the make and
model of your computer and graphics board.
MENU OK
1 (power)
indicator