I have email notifications on phone, ha-ha.If you have GPIB connectivity, you can read calibration constants via GPIB.
It can be useful if your digital board fail, as once happened with one of my K2001's (VFD U625 PSU block failed).
I listed procedure and data result on my site -
http://dev.xdevs.com/issues/956I had SRAM on all my STD K2001's too, it's normal to store all data till unit is powered. I never saw unpopulated KI2001 NVRAM socket yet.
Way to unmount APCB is next:
* Remove top black cover on analog PCB (APCB).
* Remove ferrite bead blocks on front and rear input cables, if your unit have them.
* Disconnect front and rear input cables from connector (they quite firm, so you will need to apply some force, but not too much). White cable from front AMPS input is soldered to APCB, so leave that alone for now.
* Disconnect power transformer connectors from APCB and digital PCB.
* Disconnect earth wires from transformer, unscrew one screw holding transformer bracket and carefully remove transformer
* Remove metal clip holding FET and resistor at chassis near mains input.
* Unfix BNC on rear back
* Release push button levers (Front/rear inputs switch to front panel and power switch)
* Disconnect ribbon interface cable from digital PCB
* Now, carefully slide analog board towards front panel.
* Take APCB and lift it starting from front panel side, it should go freely.
* Desolder AMPs input wire from APCB, and you are done.
Be careful with plastic align notches on bottom APCB cover, they are easy to break

After some practice you will be able to do all this in 2 minutes.
Also avoid touching APCB surface with fingers around VREF area, contamination can easy cause nanoamp sources to fail due to leakage on PCB, and yours ohms on high ranges will fail.