DOM MB V5 Diagnosis page

Board ID:

V5 000492

Source:

Michael Harris

Symptoms:                            

In STF 2, Massive Chip A and B failures. fADC failures. Disc- Scan Failures.

Analyst(s):

G. Przybylski

Analysis Procedure(s):

Pulser control voltage, and Trigger OK. ATWD Ch1 and Ch2 input pedestal voltages OK, but ATWD Ch 0 pedestal voltage reads 2.65V instead of 2.35. Traced to leaky CR26.

Root cause:

Faulty, or overheated Schottky diode.

Mitigation:

Replace faulty defective part.

Disposition:

Test, and mainstream

Any Other Information:


Traveler