SERVICE MANUAL - Nexo

HGFEDCBANXAMP4x4■ BLOCK DIAGRAM 2/5 PSANHASUB POWER SUPPLY 1 MAIN POWER SUPPLY 1AC (V) B(V)100~120 165~198220~240 181~198NOTE)Voltage of +/-B with no LOADSUBTRANSFORMERAC VOLTAGEDETECT1FGEMIFILTERPSW+24RELAY DRIVECIRCUITPSW DETECTRELAYSWITCHINGCONTROLLERRELAYRELAY DRIVECIRCUIT+15VA+15VAVOLTAGESENCE+24+5VA+3.3VD+15VA+15VAOVERCURRENTDETECTOR200ApeakPS HEAT SINKTEMPERATURESENSORMAIN POWER SUPPLY 2OVERCURRENTDETECTOR200ApeakPS HEAT SINKTEMPERATURESENSOR+90 C+90 CSWITCHINGDRIVERCONTROLICSHUTDOWNCIRCUIT(LATCH)SWITCHINGDRIVERSHUTDOWNCIRCUIT(LATCH)MAIN TRANSFORMERPHASE SHIFTSWITCHINGPS VOLTAGEDETECTFAN CONTROLCIRCUITPS VOLTAGEDETECTFAN CONTROLCIRCUIT+B(B)-B(B)E+15V+E-E-E+15VOUT RELLAY+B(B)-B(B)E+15V+E-E-E+15VFAN(R)FAN(L)PS DATAMAINS_A/PSW_DETECTTEMP_PS_A1TEMP_PS_A2VOLTAGE_PS_A1VOLTAGE_PS_A2PS CONTROLRELAY_PS_A1RELAY_PS_A2SHUTDOWN_PS_AFAN_CONTROL_1FAN_CONTROL_22PSANHBRUSH CURRENT PROTECTIONSUB POWER SUPPLY 23SUBTRANSFORMERAC VOLTAGEDETECTMAIN POWER SUPPLY 3AC (V) B(V)100~120 165~198220~240 181~198NOTE)Voltage of +/-B with no LOAD+5DOVERCURRENTDETECTOR200ApeakPS HEAT SINKTEMPERATURESENSOR+90 CSWITCHINGDRIVERCONTROLICSHUTDOWNCIRCUIT(LATCH)MAIN TRANSFORMERPS VOLTAGEDETECTFAN CONTROLCIRCUIT+B(B)-B(B)E+15V+E-E-E+15VOUT RELLAYFAN(L)MAINS_BPS DATA4FGEMIFILTER+24RELAY DRIVECIRCUITRELAYSWITCHINGCONTROLLERRELAYRELAY DRIVECIRCUITVOLTAGESENCE+24+15VA+15VAMAIN POWER SUPPLY 4OVERCURRENTDETECTOR200ApeakPS HEAT SINKTEMPERATURESENSOR+90 CSWITCHINGDRIVERSHUTDOWNCIRCUIT(LATCH)PHASE SHIFTSWITCHINGPS VOLTAGEDETECTFAN CONTROLCIRCUIT+B(B)-B(B)E+15V+E-E-E+15VFAN(R)TEMP_PS_B1TEMP_PS_B2VOLTAGE_PS_B1VOLTAGE_PS_B2PS CONTROLRELAY_PS_B1RELAY_PS_B2SHUTDOWN_PS_BFAN_CONTROL_1FAN_CONTROL_25RUSH CURRENT PROTECTION28CA1-2001022110-205