Takeda Riken TR6878 6.5 digit m/m teardown

[HighVoltage]

this is an old thread, so maybe this isn't helping, but normally there's no calibration data in battery-backed ram in Advantest instruments.  Calibration data is stored in an eeprom, and the battery powered ram is just there to save panel settings across power cycles.  However, the instruments are not good at realizing that the RAM contents are invalid, and have a habit of crashing on power-up when the battery fails or has been replaced.  in that case you need to find the reset key sequence for the instrument.  there is a PDF floating around with these for Advantest instruments.  in my copy it says for the TR6878 it's [CE][ENTER][LOCAL] + POWER SW ON  [CLEAR][ENTER].

Good information!
Can you share this PDF?

[DavidKo]

Based on the information from kipp, I have copy pasted it to google.
Advantest_Reset_Instructions.pdf
Uploaded to xDevs