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例6 微处理器采用MN152810或MN15142的彩电,遥控关机后能关掉伴音,但关不掉光栅或图像。松下M17机心(如TC—25V40RQ)彩电雷击后遥控关机光栅关不掉,仍有黑白图像。测MNl52810的(29)脚(POWER控制端)电压有高(开机)低(关机)变化,再查电源控制三极管Q806、Q803、Q802以及稳压二极管D810、D820、D830,发现Q806(2SA564)性能不良。 AN5600/AN5601K机心、松下M15L机心(如:松下TC2185、TC2173、TC2185CR等)。遥控关机,屏幕暗一下又马上亮起来,有光栅,待机灯点亮。应从CPU
Example 6 microprocessor using MN152810 or MN15142 color TV, remote shutdown can turn off sound, but can not switch off the grating or image. Panasonic M17 movement (such as TC-25V40RQ) remote control off after the color TV grating off can not be off, there are still black and white images. Measure the MNl52810 (29) foot (POWER control terminal) voltage high (boot) low (off) changes, and then check the power control transistor Q806, Q803, Q802 and Zener diode D810, D820, D830 and found Q806 (2SA564) performance bad. AN5600 / AN5601K movement, Panasonic M15L movement (such as: Panasonic TC2185, TC2173, TC2185CR, etc.). Remote shutdown, the screen darker and immediately lit up, a grating, standby lights lit. Should from the CPU