Agilent 1690A self test failures

[davidshoe]

Just picked up a 1690A and running self test I am getting two sets of failures (excerpts of the logs below, full logs attached).  Any suggestions on where to start trying to track the issues down?  All the other self tests pass fine.

Comparators Test running...
   Comparator Check Chip0 - Cal Clock No Activity Passed!
   Comparator Check Chip1 - Cal Clock No Activity Passed!
   Comparator Check Chip2 - Cal Clock No Activity Passed!
   Comparator Check Chip3 - Cal Clock No Activity Passed!
   Comparator Check Chip0 - Cal Clock Levels Failed !
   Pod1 expected: 0xffff, actual: 0x0000
   Bonus Bits expected: 0x0001, actual: 0x0000
   Comparator Check Chip1 - Cal Clock Levels Passed!
   Comparator Check Chip2 - Cal Clock Levels Passed!
   Comparator Check Chip3 - Cal Clock Levels Passed!
   Comparator Check Chip0 - Cal Clock Activity Failed !

The LA Chip Calibrations test:
LA Chip Calibrations Test running...
  -- Timing Mode Calibration --
   Testing Delay Cal
    Measure Delay Cal Failed on Chips:  0  1  2  3
   One Shots Cal
    One Shot Cal Failed on Chips:  0  1  2  3
   Testing Clocks Cal
   Testing PSync Delay Cal
    Psync Delay Cal Failed on Chips:  0  1  2  3
   Testing Data Delay Cal
    Data Delay Cal Failed on Chips:  0  1  2  3
   Testing Memory Clock Delay Cal
    Chip 0: TIMING Mode Chip Calibration Failed!
    Chip 1: TIMING Mode Chip Calibration Failed!
    Chip 2: TIMING Mode Chip Calibration Failed!
    Chip 3: TIMING Mode Chip Calibration Failed!