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Motorola r-2001c looking for help

A

A Vandermey

Jan 1, 1970
0
Hello

I have a Motorola r-2001c service monitor. The oscilloscope has no sweep on
the 100us, 10 us, and the 1us settings.
After testing and working thought the schematics I have replace many IC's
and still have no sweep. I have check the trigger circuit and have a trigger
signal into the 14428, there is an output on pin six very faintdue to speed.
there is no output on pin 10 or rather no square wave pulse. I have studied
the manual and need new direction . Is there another circuit I have missed,
I checked the time base and hold off.

Looking for assistance
Alex
[email protected]
 
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