Image Artifacts Caused By Front End Boards - GE LOGIQ E9 Service Manual

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Image Artifacts Caused by Front End Boards

Image artifacts can be caused by any of the boards on the Front End. Artifacts are frequently due to the
Front End 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:
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One troubleshooting technique is to swap DRXs around to if the artifact moves. (Pulling out
the boards will k eep the system from booting up; all the boards mu st be present for the s ystem
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.
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 Connector 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 stri n gs 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 Us er
Defs". Say 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.
Section 7-9 - Troubleshooting Tips
LOGIQ E9 P
ROPRIETARY
S M
ERVICE ANUAL