GE Vivid S60N, Базовое руководство по обслуживанию

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D
IRECTION
FR091521, R
EVISION
1 V
IVID
S60N/V
IVID
S70N B
ASIC
S
ERVICE
M
ANUAL
Chapter 7 - Diagnostics/Troubleshooting 7-7
P R E L I M I N A R Y
7-5-4-2 Noise Received via the External Cables
Electromagnetic Interference (EMI) from radio frequencies, magnetic fields, and transients in the wiring.
The noise can enter the system via the mains power cable, probe cable(s) or any other external
connected cable(s).
To troubleshoot this type of noise, disconnect cables that are not needed for the basic use of the
scanner. Check for any change in the noise each time a cable has been disconnected from the
Vivid™ S60/Vivid™ S70.
• Network cable
• Cables to any external peripherals
• ECG cables and other cables connected to the Patient I/O
Verify if the noise change or disappear when the cables are removed.
Often, this type of noise is due to grounding problems in the mains power system or that the scanner is
sharing a power line with other equipment.
7-5-4-3 Intermittent Noise
• Is there any equipment that is turned on and off near the scanner?
• Is the noise present all around the clock or only at special occasions?
7-5-4-4 Self-generated Noise Generated inside the Ultrasound system)
Example: Color Noise in the near field.
• Self generated noise will not change if you touch the scanner or the probe.
• Self generated noise may be due to either:
• heat problems
• hardware problems
• software problems
7-5-4-5 Heat Problems
Heat problems are usually starting when the Vivid™ S60/Vivid™ S70 ultrasound scanner has been ON
for some time.
If the Vivid™ S60/Vivid™ S70 ultrasound scanner has been used for scanning for some time before the
noise appears, it may be due to either heat problems or some software related issues. By doing a restart
you may learn some more about the cause.
Select Ctrl+Alt+R to restart the back end processor without power-cycling the unit.
• If the noise is present after the restart, the cause is most likely due to heat problems.
• If the noise is gone after the restart, it may be due to either the setup/adjustments of the or a
software failure.
Possible causes for heat problems:
• Fan filters need to be cleaned or replaced.
• Room temperatures outside the allowed temperature limits.
• Fans are worn-out.
• Hardware problems.