GE LOGIQ E9 Ultrasound Diagnostic Equipment Repair and Maintenance

The GE LOGIQ 9 is a whole-body ultrasound diagnostic system that provides excellent image resolution and quality for clinical diagnosis. It is widely used in the diagnosis of diseases in abdominal organs such as the liver, gallbladder, spleen, pancreas, and kidneys; the heart; obstetrics and gynecology; peripheral vessels; and superficial organs such as the breast, thyroid, lymph nodes, testicles, and eyes. It is also used in intracavitary ultrasound and interventional puncture treatment. However, some malfunctions can occur during prolonged operation, often leading to serious consequences and delaying patient treatment. This document will introduce the basic structure of the GE LOGIQ 9 ultrasound diagnostic instrument and analyze common malfunctions and their solutions, hoping to be helpful!

GE LOGIQ 9 Ultrasound Diagnostic Instrument Repair Cases

01. Malfunction One

Malfunction Phenomenon

Interference in blood flow in the [CF] mode during renal artery and limb vessel examinations.

Malfunction Analysis and Repair

There are many sources of interference, often intermittent, and troubleshooting can take 3-5 days. This is one of the most challenging aspects of troubleshooting ultrasound malfunctions. Interference can come from dust accumulation on internal components, the probe itself, the probe cable, the connection between the probe and the XDIF interface, the machine shielding, power ripple, or external electromagnetic interference.

First, check the probe. After switching probes, the 10L probe showed minimal blood flow interference, while the M3S probe showed slightly stronger interference than the 3.5C probe. Considering that there was no recent renovation or nearby strong electromagnetic or pulsed equipment, it was inferred that the interference source might be from inside the instrument. When opening the right side cover (FEP system side) and the shielding plate, it was found that the U-shaped spring contact of the shielding plate had poor contact with the instrument casing and the anti-interference copper skin on the RFAMP and FEPS boards. There was minimal dust inside the instrument.

After carefully reinstalling the shielding plate, the instrument was turned on for vascular examination. After five days of observation, no clear blood flow interference signal was observed, confirming that the interference malfunction was resolved.

02. Malfunction Two

Malfunction Phenomenon

The machine crashed during several days of continuous operation performing ultrasound-guided radiofrequency ablation in the operating room, automatically restarting and displaying a blue screen. It functioned normally when moved back to the ultrasound examination room.

Malfunction Analysis and Repair

Since the malfunction occurred in the operating room, the instrument overheating was first considered. The instrument temperature was found to be normal, and the blue screen error persisted upon restarting. Considering that the instrument's computer platform is Windows, the blue screen error is mainly related to Windows and its dependent computer hardware, the BEP system. If the FEP system malfunctions, it usually displays a specific error code and does not show a blue screen.

The memory modules were checked and reseated. After restarting, the machine worked normally, and the surgery continued. When moved back to the ultrasound examination room, testing revealed that after Windows started, the system crashed when the progress bar reached the third blue segment during application loading. This suggested that the frequent movement between the operating room and the ultrasound examination room caused the PCI card to loosen, leading to intermittent communication interruption between the BEP and FEP systems.

The interface cables of the BEP and FEP systems were checked and reseated, but the malfunction persisted. The focus shifted to the internal BEP system. PCI cards and cables were checked in order of signal input. When checking the second display signal card, it was found to be loose. After reseating and tightening it, the machine resumed normal operation.

03. Malfunction Three

Malfunction Phenomenon

The ultrasound machine was used without any abnormalities the previous day and was shut down normally. The next day, after powering on, the operating system displayed a blue screen with an error message, and the malfunction persisted after restarting.

Malfunction Analysis and Repair

Because the BEP system's operating platform is Windows, the blue screen error is mainly related to Windows and its dependent computer hardware, the BEP system. Memory failure in the BEF system was suspected. After reseating and replacing the memory modules, the malfunction persisted. Operating system failure was considered. The original system installation disc, "BaseSystemSW," was inserted into the drive and the machine restarted.

After booting from the disc, the system installation will prompt with three options: A: Install system C; B: Repair/upgrade; C: Exit. Selecting A will automatically install the system and drivers for the BEF system hardware (do not interrupt this process).

After successful system installation, as prompted, restart the instrument and then insert the "ApplicationSW" disc to install the application software. The application installation stopped halfway, with only the cursor flashing on the screen and the hard drive light blinking, indicating a system crash.

Initially, the system installation disc was suspected. Replacing it with a new software disc did not resolve the issue. The blinking hard drive light indicated a hard drive failure. The hard drive was removed and checked using DiskGenius software, which showed an unpartitioned hard drive, confirming the failure. This caused the software installation failure and the previous blue screen error. Given that the hard drive was over seven years old, it was replaced with a new one of the same capacity. After repeating the installation process and restoring the instrument's configuration parameters, the instrument resumed normal operation.

In summary, malfunctions in the GE LOGIQ 9 ultrasound diagnostic instrument can be categorized as hardware failures, software failures, or a combination of both. When encountering malfunctions, carefully observe the situation and use methods such as elimination, comparison, replacement, measurement, simulation testing, software testing, replacement comparison, isolation, and short-circuiting to identify and analyze the malfunction. By combining knowledge of the basic structure of the equipment and consulting the operation manual and repair materials, the cause and solution of equipment malfunctions can be quickly found.

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