Common faults of Ke Mei color sorter 3070

Common faults of Komei Color Machine 3070 are:

1, power supply circuit failure, power supply circuit mainly has two types: series type and switch type, which basically consists of oscillation, voltage transformation, rectification, filtering, voltage stabilization and other parts. The function is to convert the AC market into stable AC and DC voltages and provide energy for the machine. The power supply circuit has high working current, high calorific value and high failure rate. Such as rectifier bridge and voltage stabilizing block, these components may be damaged when the load is too heavy (that is, the current is too large), the grid voltage is too high, and the temperature is too high (such as poor heat dissipation). Therefore, it is necessary to install an AC regulator to stabilize the power supply voltage; Install air conditioner to reduce indoor temperature, and regularly remove dust in the machine. Taking these measures can completely reduce the possibility of partial damage to the power supply and greatly reduce the failure rate of the machine.

2. Color ultrasound probe is a unique part of color ultrasound, and its fault is unique, but not complicated. Commonly used color ultrasound probes include wired array probes and mechanical sector scanning probes. Among them, there are many failures of mechanical fan-scan probe, and the common failure is that there are bubbles in the fan-scan probe. Treatment methods include: oil drainage and oil replenishment. The treatment method is described in related books and will not be described here. Another common fault is that the sector scanning probe does not rotate, usually because the driving motor of the probe itself is damaged. At this time, the treatment is more troublesome, and the probe needs to be sawed.

3. The display part is out of order. The display part of color Doppler ultrasound is actually a computer, which has a host, a monitor and a camera monitor. The monitor consists of video amplification, scanning and display, and it will display ultrasonic images from the host computer with high resolution. Through practice, we feel that most of the failures of the display appear in the scanning part, and the failure rate of line scanning is the highest, which is similar to that of the power supply part. When the line scanning part works normally, it consumes almost more than half of the power of the whole display. In normal operation, it has a series of heating elements, such as line output tubes and line output transformers.

4, keyboard failure, in fact, the keyboard of color Doppler ultrasound is basically the same as the keyboard of the computer, and the maintenance ideas and methods are basically the same as the maintenance of the computer keyboard. It is also composed of a variety of function keys and alphanumeric keys, which is part of the operation of color Doppler ultrasound. Due to the different manufacturers and models of the machine, the keyboard is slightly different, but it can be roughly divided into two types: one is composed of independent key switches; One is the full touch button, which is generally the latest product. The most typical failure of keyboard is poor contact, which is mostly caused by dust, contact oxidation or damage of conductive rubber in touch switch, but poor contact caused by dust is more common.

5, the machine is caused by vibration failure, medical color ultrasound is a very complex electronic instrument, which has many boards, plug-ins, wiring and so on. When subjected to large vibration, these plug-ins may be loose, resulting in poor contact, so that some functions of the whole machine or machine can not work normally.