GE Vivid E9, Руководство по обслуживанию

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GE H
EALTHCARE
D
IRECTION
GA091568, R
EVISION
5 VIVID E9 S
ERVICE
M
ANUAL
Chapter 7 - Diagnostics / troubleshooting 7 - 5
7-4-2 Image Artifacts Caused by Front End Boards
Image artifacts can be caused by any of the boards on the Front End. Artifacts may be caused by the
power supply or board failures. It is important to use the Diagnostic tools on the service interface to try
to narrow down the failure to one or two boards.
• Artifacts that look like white vertical lines, rain or snow cones in one or more areas of the image can
be troubleshot in different ways:
- One troubleshooting technique is to swap DRXs around to see if the artifact moves. (Pulling
out the boards will keep the system from booting up; all the boards must be present for the
system to operate)
- Another approach is to run the Diagnostic Utilities to establish which channel the artifact
affects. A channel is a signal path sent through the system boards. Any of these boards in the
path can be causing the failure.
- Be aware that the problem may only appear with one mode, probe or preset. Normally, in B-
Flow the problem becomes more evident and may be easier to troubleshoot.
- Check all the probes on all the ports. Remove all the probes, and then check each probe
singly in every port.
- If port-related, replace the Relay Board.
- If the artifact only occurs with one probe, replace probe.
- If the problem persists with the new probe, reload software. Do not reload presets until
you have tested the system with the default settings and be sure that the problem does
not persist. User Defined Presets can carry corruption back to the system.
- If you suspect that the problem may be caused by software corruption, please note: Corrupt
Presets can be identified by a problem in only one exam category using a specific probe, or
a particular mode with a specific probe. Use the Clean Userdef function under Scanner
Utilities, leaving the system with only the factory defaults. Be sure to back up the presets,
including Connectivity configuration, TCP/IP page and Option strings before deleting the User
defined files. Do NOT reload presets until you have tested the system.
- Before performing Clean User Defs function, perform an Alt-D to capture the logs and preset
files. If the problem is corrected with Clean User Defs, send in the log to the OLC so that the
corrupted preset files can be reviewed.
- After booting up the system, without starting any patient or accessing any menu, click on the
Service and log in. Click on Utilities, then on Scanner utilities and then on “Clean User Defs”.
Select OK and that will clean the folder. Shutdown the system immediately, using the System
Shutdown function under Scanner Utilities. After rebooting, the system will come up with
default settings. Only reload presets from disk if you are sure they were stored before the
corruption occurred. If only Imaging Presets are affected you can restore the Connectivity
presets by using the selective Restore function.