DOM MB Diagnosis page
Board ID:
V5.0L 000195
Source:
Dan Wahl at U of W, PSL
Symptoms:
Flasher board firmware/software detects slow clock start
Analyst(s):
G. Przybylski/D. Wahl
Analysis Procedure(s):
Trigger on Flasher on/off signal, and capture LVDS output of U11
across 100 ohm . Capture screen snap.
Likewise, terminate with a 50 ohm resistor from each output to a common
1.25V ref that turns on at the
same time the on/off line does. In both cases, the output reaches a
normal stable equilibrium shape within about 50 ms.
Root cause:
Faulty DS90LV001
Mitigation:
Replace faulty component and retest. Send faulty component to
manufacturer for analysis.
Disposition:
Return to Wisconsin for reintegration
Any Other Information:
Traveler December 10