3.Vertical Line(Reference Line)
START
NO
Check voltage
CheckC408. D402.R405
at IC401 PIN6 26V
YES
NO
Check IC 401
Check IC101 PIN38
PIN5(V- WAVE)
YES
NO
Check the waveform
Check IC401 PIN4 (3.84V)
IC 401 PIN2(V-OUT)
Check IC 401
Check DY CONNECTOR
SM-74PM.P17
