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ECG—6851心电图机是日本光电公司近几年来推出的新产品。其主要特点为:采用EID—C006芯片,机内各种电子元件均微型化,整机结构紧凑。造成维修中故障不易查找,元件难以替换等困难。故障现象:开机后描笔单偏分析检修:按RESET键封闭后移动移位电位器故障现象不变,用数字万用表测主放大器UT—2223单元,发现集成块105(1)脚输出为+2.7V,说明故障点与后级放大器以及位置
The ECG-6851 Electrocardiograph is a new product introduced by the Japanese photoelectric company in recent years. Its main features are: the use of EID-C006 chip, a variety of electronic components within the machine are miniaturized, the whole structure is compact. It is difficult to find faults in repairs and difficult to replace components. Symptoms: After the start of the pen, the single-offset analysis and maintenance: Press the RESET key to move the shift potentiometer after the closure and the fault phenomenon remains unchanged. Use the digital multimeter to measure the main amplifier UT-2223 and find that the output of the integrated block 105(1) is +2.7. V, indicating fault point and post amplifier and location