Troubleshooting R&S M3SR Series 4100 HF Transceivers
4.3 6124.9007.82.01
E2PA 12 V Power Amplifier
E2PA VREF Power Amplifier
E2PA QUIESCURRENT Power Amplifier
E2PA EEPROM Power Amplifier
E2PA DRIVE, NO POUT Power Amplifier
E2PA NO DRIVE Check RF cabling to Power Amplifier, check Frontend or Digital
Selector.
E2PA DUMMY LOAD Not critical for operation, only needed for IBIT. Replace Power
Amplifier.
E2PA ALC Power Amplifier
E2PA COM Power Amplifier RCB communication problem, check cabling.
E2ATU NO HF Check RF cabling, repeat tune, replace Power Amplifier or Antenna
Tuning Unit.
E2ATU CPU BOOT Take care of correct download, using the Customer CD and Update
Tool. If behaviour persists, replace Antenna Tuning Unit.
E2ATU EEPROM Active tuning is still possible, but no ATU Learn Procedure or “Silent
Tune”, replace Antenna Tuning Unit.
from Synthesizer
SYN UNLOCK LO1 Synthesizer
SYN UNLOCK LO2 Synthesizer
SYN PLL CLEAN UNLOCK Synthesizer
SYN UNLOCK 10MHZ Synthesizer
SYN LO1 LOW LEVEL Synthesizer
SYN LO2 LOW LEVEL Synthesizer
SYN VCC Synthesizer
SYN LO1 DAC Synthesizer
SYN FLASH Synthesizer
SYN VCO Synthesizer
SYN OCXO DAC Synthesizer
from Frontend
FE PWR 1STLO Synthesizer, Frontend
FE IF LOOPBACK Frontend
Message Module(s) / Device(s) to be Replaced and/or Action
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