DOM MB Diagnosis page
Board ID:
V5.0L 000111
Source:
From inspection, July,
2004
Symptoms:
Questionable drilling in via stack
Analyst(s):
G. Przybylski
Analysis Procedure(s):
Examination the questionable via.
Loaded CPLD; Loaded EPC8; Loaded flash; Ran room temperature STF suite.
Ran low temperature profile.
LC Loopback failure at and below -60°C
At -70°C, the board fails many ATWD tests, and eventually crashes.
Root cause:
Mistargeted drilling, or dull drill.
Mitigation:
Increased inspection, and more frequent drill replacement, since June.
Disposition:
The questionable via fails the
minimum Class II via requirements. (180° outside the pad)
This board should NOT be deployed.
Any Other Information:
Travler September 10
The via