DOM MB V5 Diagnosis page

Board ID:

V5 000658

Source:

Azriel Goldschmidt

Symptoms:

ATWD A Channel 2 Baseline Jumps when cold

Analyst(s):

G. Przybylski

Analysis Procedure(s):

Map out low temperature performance profile from -40°C to -75°C
Swap ATWD A to board 727 ATWD B; swap ATWD B to board 727 ATWD A.
Load this board ATWD A with 727 ATWD B; load this board ATWD B with 727 ATWD A
Remap low temperature performance.  The anomylous behavior has been greatly suppressed
on both board 727, and 658, for no obvious reason. 
Behavior suggests  additional cleaning.  water wash of another board doesn't help.
Perhaps heat and rosin solder flux??

Root cause:

Uncertain

Mitigation:

TBD

Disposition:

Reprofile, and assign to software testing

Any Other Information:

Traveler September 10