目前，普通纸传真机已广泛得到应用，下面就较早进入我国市场的美国JetFax4、JetFax2000型传真机（属喷墨打印方式）一些常见故障作一分析，供大家参考。故障现象开机后面板无任何显示，机器也不自检。分析检修该机电源板为脉冲宽度调制型开关电源，由电源输入部分和DC－DC两部 At present, ordinary paper fax machines have been widely used, the following on the earlier access to the Chinese market, the United States JetFax4, JetFax2000 fax machine (inkjet printing) for some common faults for an analysis for your reference. Failure phenomenon does not show any panel after boot, the machine does not self-test. Analysis and maintenance of the machine power board for the pulse width modulation switching power supply, the power input section and the DC-DC two