Maintenance instructions: 1) When the oscilloscope fails, first check the +5V power supply (measured at TP5), its value should be within the range of +5V±0.2V. At the same time, check whether there are any components with obvious heating on the circuit board (7805 will heat up to a certain extent when the oscilloscope is working, and the temperature is normal within 40-50℃). 2) If there are any components that are obviously hot or even smoking, cut off the power supply immediately, and carefully check whether there are any errors in the installation direction, polarity, value, etc. of the components. 3) For maintenance work, the user must prepare at least one working digital multimeter. 4) Unless otherwise specified, the voltage measurement is relative to the ground of the oscilloscope (the heat sink of 7805). When measuring, connect the negative probe of the multimeter to the ground and the positive probe to the node to be measured. 5) When checking whether there is connectivity between points, disconnect the power supply.
You Might Like
Recommended ContentMore
Open source project More
Popular Components
Searched by Users
Just Take a LookMore
Trending Downloads
Trending ArticlesMore