Service 2Keysight 53147A/148A/149A Assembly Level Service Guide 85Table 2-5 Front Panel Display Error MessagesMessage Description12V FAIL The +12 VDC output from the power supply is not within specifications.–12V FAIL The –12 VDC output from the power supply is not within specifications.–5V FAIL The –5 VDC output from the power supply is not within specifications.ADC FAIL Failure detected in the ADC.PATH FAIL Failure detected in the Channel 1 signal path.THRS FAIL Failure detected in the Channel 1 threshold circuit.THRS FAIL Failure detected in the Channel 2 RF threshold circuit.THRS THRU Failure detected in the Channel 2 through-path threshold circuit.THRS HET Failure detected in the Channel 2 heterodyne-path threshold circuit.EEP WRT FAIL Failure detected while writing to EEPROM.FPANEL FAIL The front panel or its interconnecting cable is defective or not properly connected.FPGA FAIL Failure detected in the FPGA (Field Programmable Gate Array).GPIB FAIL Failure detected in the GPIB hardware.HET PATH FAIL Failure detected in the heterodyne-path circuit.IIC FAIL An attempt to write to the LCD display failed.INSTCFG FAIL The instrument’s configuration data is missing or has become corrupted.OVERTEMP The instrument’s internal temperature is above the acceptable limit.PWR CAL FAIL The instrument’s power-calibration data is missing or corrupted.PWR CKT FAIL Failure detected in the Channel 2 power-measurement circuit.RAM FAIL Failure detected in RAM.ROM FAIL Failure detected in ROM.SAV SET FAIL One or more of the sets of user settings is missing or is corrupted.SERVICE FAIL The instrument’s service data is missing or has become corrupted.THRU FAIL Failure detected in the through-path circuit of Channel 2.VCO/CNT FAIL Failure detected in the VCO or the Count Chain.
