1 , using the remote control , press the remote control switch buttondfqservice manual download site
dfqservice manual download site
( 1 ) If you press a remote control switch machine keys can be turned on, that failure was the result of a microprocessor (CPU) produced a shutdown command signal , the microprocessor may be due to a malfunction , should focus on checking microprocessor and power supply circuits , reset circuit , clock oscillation circuit , signal recognition circuit ( line sync signal ) should also check whether the set timer.dfqservice manual download site
dfqservice manual download site
( 2 ) If you press the button twice to turn the remote control switch , indicating that the fault position in the total switching power supply . According to the analysis circuit theory knowledge, only the start capacitor C403 storage charge exhausting , C403 can provide base current to the switch again V401, the equivalent of pressing the first remote control switch machine health , microprocessor and switching regulator standby power is real , and the charge stored in relief C403 , the second pressing the remote control button to switch on again. It is also not improved switching power supply automatically shut down the main features of a common problem , this article will focus on the analysis in the service instance.

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