MCM 111 timeline


History of MCM 111


  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. 15-Jul-99: at LANL, failed MCM QA test (3rd and 5th block of 32 channels dead).
  6. 16-Jul-99: visual inspection, then surface mount caps removed, short did not go away.
  7. 6-Aug-99: repeat MCM QA, failed -- 5th block of 32 channels dead .
  8. 10-Aug-99: probe surface mount components, no problems seen
  9. 11-Aug-99: sent to Pace to have 4 surface mount caps replaced.
  10. 23-Aug-99: repeat MCM QA: failed again, 32 dead channels (AMU/ADC problem) .


John Sullivan
updated 15-Sep-1999