开云体育

I recently acquired a HP6209B, and already have the same manual as the one here in the files section, but it does not include the component layout, as it seems that page was left out during the scan. If someone might have a HP6209B paper manual, could they please take a clear hi-res picture of the parts location page and email or post it to the files section? I think the 6207B is almost identical so a picture of that component layout might also be helpful, if it has better resolution as the one present on the 07B 1970 manual I already have that looks very dark, lo-res and low-contrast, so not very usable at all.

The power supply seems to work just fine, other than on the 12mA scale the meter needle pegs all the way to the left beyond zero, even without a load connected. Guessing probably some resistor value has drifted, so a parts layout might be helpful to have. The 120mA scale seems to work fine after calibrating it (it was reading a bit low). And if I put a 10mA load while on the 120mA scale, and then switch to the 12mA scale it will read around 8mA, even after the calibration. About a second after disconnecting the load the needle will start to move left. Volt scales where reading 5V high, but after a meter zero and calibration they are now reading reasonably ok for an analog meter.

One other issue is that the current 10T pot seems a bit stiffer to turn than expected, but is still fully functional. On the other hand the volts 10T 100K pot was replaced with a 50K unit, and the tech even left a note about this inside the power supply taped on top of the main transformer, dated November 1981. The volts adjustment turns with normal feel, and also seems to work fine with this half value pot.

Thanks in advance.