D
IRECTION 5771498-100, REVISION 6 VENUE™ SERVICE MANUAL
7-10 Section 7-4 - Gathering Troubleshooting Data
PRELIMINARY
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
Venue™ .
• Network cable
• Cables to any external peripherals
• 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 Venue™ has been ON for some time.
If the Venue™ 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 or a software
failure.
Possible causes for heat problems:
• Room temperatures outside the allowed temperature limits.
• Fans are worn-out.
• Hardware problems.
7-5-4-6 Hardware Problems
A hardware issue will typically be an error/malfunction on a card.
7-5-4-7 Software Problems
Check if a newer software version is available. A software update may include noise fixes. If needed,
update the software.
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