论文部分内容阅读
故障现象开机自检过程中显示屏3 s后显示该机软件版本信息,但充电电压进度指示箭头无法显示,不能进入正常操作界面。随后出现故障信息POWER FRULT(充电电源故障),蜂鸣器发出报警声并“死机”。故障分析POWER FRULT定义为电源出错。开机自检过程中,由B2板(中心控制板)主板程序向B4板(电容器充电板)输出CHARGER ENABLE信号(充电始能信号),控制PWM(25 kHz脉宽控制信号)工作,PWM驱动充电逆变
Symptom During the POST process, the software version of the software is displayed after 3 seconds. However, the charging voltage progress indication arrow can not be displayed and can not enter the normal operation interface. Then the error message POWER FRULT appears, the buzzer sounds an alarm and “Crashes ”. Fault Analysis POWER FRULT is defined as a power supply error. During POST, the CHARGER ENABLE signal (charge enable signal) is output to the B4 board (capacitor charging pad) from the B2 board (center panel) mainboard program to control the PWM (25 kHz pulse width control signal) operation and the PWM drive charge Inverted