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TP801－M24型打印机用于HL－2808型吸光度计的打印时，常会发生走纸虽在进行，但打印机不打印的故障现象。为此，笔者对该机故障原因进行分析，并就其排除方法作以介绍。该机是由Z80CPU输出的数据经过U：－74LS273八位锁存器的输出控制信号，供给打印机选通信号，并通过机蕊的
When the TP801-M24 printer is used to print the HL-2808 Absorbance Meter, it often happens that the paper feed is in progress but the printer does not print. For this reason, the author analyzes the cause of the machine failure and gives an introduction to its exclusion method. This machine is the output data from the Z80CPU through the output control signal of the U:-74LS273 eight-bit latch, which supplies the printer strobe signal and passes through the core of the machine.