Hi,
I have a HP 8594E with the CAL AMPTD error.
I built the crystal shorts (but the resistors I used add up to 89.x Ohm instead of 90.0 Ohm - hopefully that is not critical).
Then I followed the first part of 2.5 Crystal Alignment.
I got a much better Marker Delta as described on page 52.
This did not fix the CAL AMPTD error.
So i carried on with the LC Alignment and LC Centering. This did not fix the CAL AMPTD Error either.
I then tried the LC Amplitude correction, but was not able to finish it due to wife calling...
However, the LC alignment and centering instructions seem wrong to me - it seems that the author did a copy&paste of the steps to move the shorts and they make no sense. I did follow this, positioning the shorts as I thought it should be, but I am not 100% certain I did it correctly.
I will try to repeat this ASAP.
Any suggestions, tips and tricks are welcome.
Thanks,
Vitor