18  System Maintenance
Operator’s Manual 18 - 7
18.1.5 Checking the Power Cable and Plug
Visually check to confirm that there are no wrinkles, cracks or deterioration, and no cracks or 
expansion on the surface of the adapter. 
Manually check to confirm that there is no looseness or rupture. The connection of the plug is 
reliable.
18.1.6 Checking Appearance
Check if there are any cracks in the covers:
• Ultrasound system covers.
• Probe appearance.
• External appearance of the ECG lead.
18.1.7 System Hard Drive Backup 
To prevent deterioration or loss of data stored in the system hard drive (including patient info data, 
preset data, etc.), create a backup copy of the hard drive at regular intervals.
18.2 Troubleshooting
If any persistent system malfunction is experienced, e.g., an onscreen error message, blank imaging 
screen, absent menus, see the table below. If the failure cannot be resolved, contact the Mindray 
Customer Service Department or a sales representative.
No. Failure Cause Measure
1. The power indicator 
of the monitor is lit 
up, but the image is 
blank.
The interval between turning off 
and restarting the system is too 
short - wait at least 20 seconds.
Turn off the system and wait at 
least 1 minute, then restart the 
system.
The monitor brightness or 
contrast may be improperly set. 
Adjust the monitor brightness 
and contrast back to the factory 
defaults. 
2. The monitor displays 
the characters and 
menus but no images.
The transmission power, overall 
gain or TGC controls are 
improperly set.
Adjust the transmission power, 
gain or TGC control.
Check that a probe is connected 
and/or fully connected.
Ensure proper probe connection.
The system is in freeze status. Unfreeze the image.
3. The image quality is 
degraded
The exam mode is incorrect. Select an appropriate exam 
mode.
The image post-processing 
settings are incorrect.
Adjust the image post-processing 
settings or reset post-processing 
to the default values.
The image presets are 
inappropriate.
Reset the factory default presets.
4. The button does not 
respond and the 
system is buzzing
There is dirt blocking the button. Check the control panel for the 
blocked button and press it 
several times to release it.
Clean the button.