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Common Faults and Inspection Method
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Ultrasonic cleaning failure does not work properly, the general common are the following seven conditions, the following analysis and detection:
First, the ultrasonic cleaning of insurance damage: is found in the boot without the power display, no action, first look at the power seat in the insurance for damage.
Analysis: There may be users with FireWire or ground zero line mix, and there is no ground (native ground cover is connected with the machine), there may be the machine short-circuit, short circuit component aging phenomenon, the insurance damage.
Detection: watch out the insurance, with or without fracture, measured with a multimeter is disconnected through interrupted, replace the device.
Second, the transducer damage:
Analysis: It may be used for a long time in the boot state, the temperature will gradually rise to melt lead to gel off the transducer or the transducer ceramic part of the fracture. Detection: The shake table transducer measuring dielectric strength, dielectric strength can not be used in the 200MΩ following have to be a new one transducer.
The internal ceramic transducer will be the long-term use appears broken, it does not work.
Third, the power of ultrasonic cleaning in damage:
Analysis: Power management on the motherboard because of a long uninterrupted use of ultrasonic cleaner or cleaning fluid too little long-term use, so that short-circuit power control situation.
Detection: When the power transistor on the motherboard connection type, use the multimeter to measure the power pins on both sides of the resistance tube under normal circumstances should be around 22Ω. After winning power tube (disconnect the motherboard), measured between each pin should be justified.
Fourth, the regulator damage
Analysis: damage to the regulator in the power tube resistance is generally small or short circuit, the power caused by the damage itself is minimal.
Test: According to the diode characteristics, the forward and reverse at. Profile measurements with a multimeter diode, the forward resistance of about 70Ω, reverse ∞. Numerical error, such as the resistance is too large or forward ∞, replace the regulator.
V. damage to the bridge (diode rectifier)
Analysis: The situation with the regulator
Detection: diode characteristics under the same (bridge itself is formed by the diode)
Sixth, the damage control board (adjustable ultrasonic cleaner)
Analysis: Working long hours, aging components, as well, and sometimes into cleaning fluid related.
Detection: In case the machine does not work, disconnect the control panel with the motherboard connection. The motherboard power, such as machine work, then the control panel damaged and need replacing.
VII, inductors, isolation transformer damage
Analysis: As the ultrasonic cleaner to work long hours, inductors, transformers are cooling components, which itself may be due to high temperature melting, burning, causing a short circuit.
Detection: inductors, transformers damaged, in most cases burn marks can be seen directly, replace the device.
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