PSA question with ERR reading I2C EEPROM on RF_ATT_CTRL board

[allenw]

Hi,

I have the R&S`s PSA( model number FSEB30 ) part number is FSEB30, now turn on power and into system, it has a error in "system message". and the error message is "ERR reading I2C EEPROM on RF_ATT_CTRL board" as the attachment.

who know which board is the function of the RF_ATT_CTRL board and  this I2C EEPROM IC inside it?

thanks!

Allen