Hello all.
I have a Keithley 2000 I recently acquired. The unit appears to be functional. I have not checked for accuracy on any of the readings yet, other that to see things are in the "ball park". I ran the self test and I get faults in 301.2, 302.2 The are faults on the HI Ohm, 2 Wire Sense.
I switched the to the rear inputs and repeated the tests and got whole pile of faults, switched back to the front panel and then it reported 301.2, 302.2, and also 303.2 (which is Hi Ohms). So before I started digging around I was wondering if the input switch needs to be cleaned. I have the repair manual, and a good schematic but I have never worked on one of these before. I suspected the switch because it feels a bit spongey, but I don't know how it is supposed to feel.