DOM MB V5 Diagnosis page

Board ID:

V5 00219

Source:

George Chao

Symptoms:                            

Will not communicate when attempting to run STF.

Analyst(s):

G. Przybylski/Arthur Jones

Analysis Procedure(s):

CPLD load OK. EPC8 load OK. Flash load OK.
Hangs on boot to SDRAM.
Logged many memory write/read-back errors for SDRAM0. No obvious pattern which might indicate stuck address or data bits.
Logged many memory write/read-back errors for SDRAM1. No obvious pattern which might indicate stuck address or data bits.
Inspected SDRAM data , address and clock waveforms. They are all crisp, with minimal ringing, and adequate amplitude.

Root cause:

Suspect EPXA4

Mitigation:

Set aside for now. Revisit later.

Disposition:

On hold

Any Other Information:

Traveler