Fault detection circuit of E14—- current

(/CUR_A or /CUR_B signal zero offset value is too large)

Solution step
1) detection on the main control board impedance between two C55/C67: 13.5K; 80V transformer electric, measuring voltage is U20 1.46V [1, 7 feet of 4 foot [to] between impedance: 13.5K standby voltage: 1.46V]
2) detection on the main control board impedance between the ends of 100 C54/C62:?; 80V transformer electric, measuring voltage 0V
3) the main control end of the D8/D11 plate tilts, with a multimeter measuring (block) two diode resistance: Infinity [negative] does not make a mistake when measuring