故障现象:在打印机输出各种信息的时候,打印纸行的同一水平高度上失去打印点,出现断空线.分析检修:这种情况不能简单地断定为某根打印针已折断。因为在打印不同字型时,走纸方式不同,如一行字需要打印两行才能完成,由于机械推进纸的误差,也会造成打印字的上半部分与下半部分衔接不上,而出现断 Symptoms: When the printer outputs a variety of information, the print line at the same level of loss of print points, blank lines appear. Analysis and maintenance: This situation can not simply determine a print pin has broken. Because when printing different fonts, the paper is different, such as a line of words need to print two lines can be completed due to the mechanical advance of the paper error, will cause the upper half of the print word and the lower part of the convergence is not, and appear broken