DOM MB V5.1 Diagnosis page

Board ID:

V5.1 001307

Step:

Vendor Room Temperature STF test

Symptoms:

April 6, 2005,  STF Test Hangs during Temperature Test

Analyst(s):

Arthur Jones

Analysis Procedure(s):

5/6/05: Confirmed hang during temperature test. Pulses present at U2-2, the clock input, but no pulses present at U2-1, the output of the part. Line held high by pull-up.

Root cause:

STF Temperature test apparently never finishes. Hardware and software failure.

Mitigation:

Replace bad U2 chip;
Fix software to make it  'fail gracefully'

Disposition:

Pending repair

Any Other Information:

Traveler April 6, 2005