Measurement of the LX200 Classic Dec PCB with an oscilloscope


[upwards] [screen of the oscilloscope] [Motherboard Lx200 large] [Front Panel Component Side Lx200 large] [Front Panel Solder Side Lx200 large] [L2724 group on Lx200 large]


Adjustment of an analog oscilloscope: Volts/Div on 0,2 V; Time/Div on 1 ms

Measurement of a LX200 Classic Dec PCB with an oscilloscope.

The red lines are representing the "best" space around between the green  lines on top and bottom of the screen. The spaces should be equal.
Indeed my oscilloscope is showing an ideal shape of the lines. When turning the potentiometers of the PCB, it's easy to recognize the best setting.

If you have problems with this method, it's a good idea to control the potentiometers with a volt meter. The ideal Volts are: 2.42 V on both potentiometers.
 

[upwards] [screen of the oscilloscope] [Motherboard Lx200 large] [Front Panel Component Side Lx200 large] [Front Panel Solder Side Lx200 large] [L2724 group on Lx200 large]

 

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