Water-cooled xenon lamp aging tester abnormality evaluation method

The water-cooled xenon lamp aging tester is suitable for testing the suitability of storage, transportation and use of electrical, electronic and other materials in a simulated natural environment. This is an experimental instrument for material weathering aging test, which can be provided by Qisnun Precision Electromechanical Technology Co., Ltd. Welcome customers who need to inquire. The Standard Group R&D technical engineer said that the abnormal failure of the xenon lamp aging test chamber is a problem of great concern to customers. Regarding the abnormal judgment method, here is a simple explanation, hoping to be helpful to every customer.

1. Percussion hand pressure method: When the instrument works well or badly, most of these phenomena are caused by an unstable contact orcaused by false soldering. Tapping and hand pressing methods can be used for this. \"Tapping\" refers to tapping a small eraser tip or other tap on a board or component where a failure might occur, to see if it causes any errors or downtime. What we call \"manual pressure\" means that when a fault occurs, after turning off the power, press the plug, plug and seat again by hand, then open it to try to see if the fault can be eliminated. If the beating on the case is found to be normal, and then the beating is not normal, please reinsert all the connectors first and try again. If that fails, you need to find another way.

2. Method of observation: use sight, smell and touch. Sometimes damaged components discolor, blister or have burnt spots, burnt devices produce peculiar odors andt shorted chips burn out; weak soldering or desoldering can also be observed with the naked eye.

3. Temperature rise and fall method: Sometimes the instrument works for a long time, or when the working environment temperature is high in summer, it will fail. Stop and check as normal. Another failure has occurred. The reason for this phenomenon is that the performance of integrated circuits or individual components is poor, and the high-temperature characteristic parameters do not meet the index requirements. In order to find the cause of the breakdown, the method of increasing the temperature can be used. The so-called cooling means that when a defect occurs, wipe alcohol with cotton fiber in the place where the defect may occur, let it cool, and observe whether the defect is eliminated. Heating consists of artificially increasing the ambient temperature.ante, such as placing an electric soldering iron on a suspect part (be careful not to raise the temperature too much at the risk of damaging normal devices) to see if the fault occurs.

4. State adjustment method: Under normal circumstances, before the fault is determined, do not casually touch the circuit components, especially for adjustment devices, such as the potentiometers. However, if re-reference measurements are taken in advance (for example, marking the position or measuring be sure of the voltage or resistance value before touching), touching is still allowed. Maybe sometimes the glitch disappears after the change.

5. Isolation method: The fault isolation method does not need to be compared with the same type of equipment or parts, and its performance is reliable. Based on the flaw detection flowchart, the progressive reduced segmental encirclementment the fault finding range, combined with methods such as signal comparison and parts swapping, the fault can usually be found quickly.

63. Elimination method: The so-called elimination method is to judge the cause of the fault by disconnecting the plug-in card, some plug-in cards and devices in the plug-in device. After removing some boards or components, the instrument returns to normal, which means that a fault has occurred.

7. Replacement method: Two instruments of the same model or enough replacement parts are required. Replace the good parts with the same parts on the faulty machine to see if the fault is eliminated.

Shanghai Fanbiao Textile Testing Technology Co., Ltd., as an enterprise integrating R&D, manufacturing, sales, training and service, is committed to continuously providing more testing instruments. market test, fosupplying long-term textiles, testing instruments for leather, combustion, automotive interior materials, environmental weather aging, masks and protective clothing, etc., can also accept non-standard customization. Before purchasing, we can carry out targeted tests according to customer requirements to ensure that the purchased instruments are applicable.

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