A7a6 ultrasound repair service providers, Guangzhou Shiko, ultrasound service

Guangzhou Shiko medical equipment maintenance Services Ltd. focus on doing a professional third-party service medical equipment company, since its inception, the starting point positioning, lead the domestic medical equipment industry third-party service, the company's main ultrasonic maintenance, testing, upgrades, maintenance, structure and the basic principles of the warranty, leasing, spare parts and related supplies, equipment sales and other services B-1, B-basic structure of the device B-device can be divided into two parts ultrasound repair a7, a6 service providers that host and probe its components includes a transmitter, scanning, reception, signal processing and display these five parts. A host can have one, two or even a plurality of probes, one by one can be installed in the probe or even tens of thousands of piezoelectric wafer, the wafer is primarily the role of the electric and acoustic or acoustic and electric conduct energy conversion. At work, front-end circuit B-device to emit ultrasonic pulses, after the interface circuit of the probe and then loaded onto the probe, this time the probe will re-echo signals received via the interface circuit of the probe back to accept amplifier. 2, the basic principles of B-device B-device is the physical characteristics of the use of ultrasound in medicine through analysis and determine the patient's pathology of a medical instrument. Since the ultrasonic wave propagation process in the human body reflection occurs, refraction, scattering a series of physical characteristics, therefore, hospital workers on the basis of these changes occur ultrasound, combined with clinical and pathological correlation analysis and testing, on the site of the lesion, the extent of the lesion to make relatively accurate judgments. Symptom The machine can start, in the selection of phased array probe (FPA 2.5MHz) when, in the image area is not the beginning of the wave, only noise, ultrasound scans can not diagnose. Then switch to the linear array probe (FLA 10MHz), there is the beginning of wave in the image area, but under normal circumstances, only about 1/3 of the far-field section does not echo. Increase the gain, the noise will be increased, it can not be clinically diagnosed. 2. Analysis Inspection of the defective ultrasound transmitter section judges, suspect the system to prevent the phenomenon. Generating and transmission components affect ultrasound include: probe, channel plate, the radiation plate, the front control panel and high-voltage power supply, and therefore need to gradually checking Aloka ultrasound a6 repair how much money, further narrowing the scope of failure. First, check the probes. Unplug the probe inserted into another socket, and then look to switch the probe is normal. After examination, the probe's switch to normal, the failure phenomenon persists. This shows that the probe, the channel plate this part of normal operation. Next, check the transmitted pulse trigger signal, the result is normal. When it detects high voltage power supply, and found no +/- 80V power output. This shows that the high-voltage supply is defective. High-voltage power failure, will lead to emission board can not generate ultrasonic pulse output, you can not have a beginning wave image. 3. Troubleshooting from the chassis to remove the high voltage power supply module, open the metal casing, use a multimeter testing found that there are two fuse has blown, indicating internal high voltage power supply short-circuit fault. After measurement, we found that two transistors shorted breakdown. Replace the same specifications transistors and fuses ultrasound service, short circuit troubleshooting. After the high-voltage power supply module into the machine, start running Aloka ultrasound probe repair and supply, the system returned to normal. 4. B-maintenance experiences are sophisticated engineering. First, the working principle of the equipment must have a certain degree of understanding, and then the symptoms, gradually narrow the scope of failure, and ultimately locates a faulty component. Then, for faulty components detailed inspection and analysis to identify component failure or malfunction a7a6 ultrasound repair service providers, Guangzhou Shiko, ultrasound service provided by Shiko Guangzhou Medical Devices Services Limited. Guangzhou Shiko medical equipment maintenance Services Ltd. (www.zhihengmed.com) (www.zh-med.com) to provide "maintenance ultrasound, B-maintenance probe repair" business, the company has "GE, Siemens, Philips, Toshiba, Hitachi, Aloka, Yum "and other brands. Focus on medical equipment and other industries, in Guangzhou have a higher visibility. Welcomes inquiries, contact: Li.