Charles CPU +5 V overhaul, the reset signal and the clock oscillation showed no abnormality, peripheral circuit components have no adverse suspected a problem with the operating board, focus on examination of IC1 (HD404316B38S) {26} ~ {35} script machine keying strobe end and diode D14 ~ D22 extremely controlled by CON03 to touch a conductive thin film resistor values ​​operating level, which CDN03 {2} {5} feet feet and no TP signal output, normally using MF30 multimeter R × 10k block measurement,

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