DOM MB V5 Diagnosis page

Board ID:

V5 000498

Source:

George Chao

Symptoms:                            

Can't read failure stage.
August 6, Most ATWD A and B tests fail. Passes tests when cooled to -50C, except ATWD baseline.

November 11,  ATWD A Channel 2 fails pedestal test when cold

Analyst(s):

G. Przybylski

Analysis Procedure(s):

Serial clock, select, and data present at inputs of U59. 
U59 outputs stuck low. Unresponsive to programming.

Root cause:

Faulty serial DAC U59.

Mitigation:

Replace, test and mainstream

Disposition:

Mainstream

Any Other Information:


Traveler August 6

Traveler September 10

Additional information