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My PSA Series Spectrum Analyzer Shows error +605 Data Corrupt or Stale, NRAM copy of !LO_Tune_OFFs_CAL_FILE and additional similar messages. What should I do?

The Non-Volatile RAM battery has failed. This battery failure has caused the temporary storage of the NVRAM data to be diffent from the saved data in FLASH RAM. The instrument is still in calibration except that the internal clock time is incorrect. Additional messages may appear as well, such as;

Data Corrupt or Stale, NRAM copy of !LO_Tune_OFFs_CAL_FILE
Data Corrupt or Stale, NRAM copy of !LO_Tune_Gain_File
Data Corrupt or Stale, NRAM copy of !TCONV_50MHZ_ERR
Data Corrupt or Stale, NRAM copy of !TCONV_VAR_DAC_CAL_FILE
Data Corrupt or Stale, NRAM copy of !TCONV_TEM_COEF_CAL_FILE

The replacement battery part number is 1420-0314C and located on the CPU Board. This battery is a Panasonic 3V P/N BR2325.