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Boot with an oscilloscope view of the investigation, line pipe V432 c highly unstable anti- peak frequency flyback waveform , the DC voltage 1lOV stable.Cqdservice manual download site
This failure is like an open circuit fault line deflection coil , the horizontal deflection circuit to check the deflection coil connector rows found only three wires ( typically four ) , which has received two field deflection coils, and only one connection line deflection coil. Then check the other wiring line deflection coil through - an independent plug plugged into the line output transformer T471 ¢â foot end , the line deflection coil loop ( different from the random drawing ) as shown in the drawings . The inspection found that the resistance value between the T471 2,10 feet large, detached 2,10 feet and then measuring its resistance is ∞. Normal approximation to 0Ω.Cqdservice manual download site
According to the user to reflect : Before this failure had twice overhauled others , and replace the line output transformer T471; aircraft initial failure is repeated firing line pipe , replace the T471 is no longer firing line pipe , but now becomes a symptom .Cqdservice manual download site
According to the preliminary examination and users reflect the situation analysis , first solve the problem of unreasonable T47l 2,10 feet . Analysis: boot on the firing line pipe line output transformer causes and unrelated , but after replacing the T471 repairer had no firing line pipe is T47l 2,10 foot barrier just a coincidence. Because when T471 2,10 foot barrier is the line deflection coil open loop ( which is a special connection machine BOC deflection circuit ) , thus making V432 load reduction , which is V432 c Current drastically reduced , this even when there have been adverse incentives and other factors , it will not be firing line pipe . It is this coincidence was the former mender into errors. Therefore, we can determine the original line output transformer is not damaged. Put it back into the circuit , re- correct maintenance.
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