18-6 System Maintenance
 Troubleshooting Table
No. Failure Cause Measure
1 After the AC
power input is
connected,, the
AC power
status indicator
does not light
on.
Abnormal power system or
incorrect connection of the
power cord.
Verify that the plug has not
become loosened or dislodged
from the back of the system.
2 When the
power indicator
of the monitor is
on and image is
blank.
The interval between turnoff
and restart is too short – wait
a minimum time of 20
seconds.
The monitor brightness or
contrast may be improperly
set (use <Fn>+ Direction key
to adjust).
Turn off the system and wait a
minimum time of 1 minute, and
then restart the system.
Adjust the monitor brightness
and contrast back to factory
defaults.
3 The monitor
displays the
characters but
no images.
The transmission power,
overall gain or TGC controls
are improperly set.
Verify that a probe is
connected and / or fully
connected.
The system is in the frozen
status.
Adjust the transmission power,
gain or TGC control.
Ensure proper probe
connection.
Unfreeze the image.
4 The image
quality is
degraded
The exam mode is not
correct.
The settings of the image
post processing are not
correct.
The image presets are
inappropriate
Select an appropriate exam
mode.
Adjust the settings of the image
via post processing or reset the
post processing to the default
values.
Reset the factory default
setups.
5 The button is
responseless
with the system
buzzing
There is too much dirt
blocking the button
Check the control panel for the
button being blocked and press
it several times to release it.
Clean the button.
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