MCM 107 timeline


History of MCM 107


  1. ?-May-99: arrival at LANL, visually inspected
  2. ?-May-99: at LANL, glue output cable to MCM
  3. ?-May-99: sent to Pace to install surface mount components
  4. ?-May-99: visual inspection, no problems reported.
  5. 9-Jul-99: at LANL, failed MCM QA test (7/8 channels doen't work, AMU/ADC problem).
  6. 5-Aug-99: repeat MCM QA, failed -- same problem (7/8 channels dont work, AMU/ADC problem) .
  7. ?-Aug-99: probe surface mount components, 2 cases of cracked epoxy and a missing component seen
  8. 11-Aug-99: send back to pace to replace 4 surface mount components and fix other problems
  9. 18-Aug-99: Another inspection of surface mount components. More shorts found The shorts over the AMU/ADCs remained even after the surface-mount caps were removed.
  10. 27-Aug-99: Another inspection of surface mount components. 9 shorts found, including one over each AMU/ADC.


John Sullivan
updated 15-Sep-1999