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8648A had 617 FM Modulation Path failure!

Question asked by tanglelin on Feb 2, 2011
Latest reply on Feb 10, 2011 by tanglelin
i am new on this. I had a 8648A/1EP, after passed  the calibration, i sent the unit to inspection, then 617 FM modulation path failure show up when the people turn on the unit. i got the unit back, then i found out. the error show up only when you hot turn on or you cycle the power, is there someone can help me find  out the problem? thx.