User Guide

PAMS
Technical Documentation
RAE-3
8. Troubleshooting
Page 8 – 38
Issue 1 06/01
2.9.5 Memory fails in PTS/WinTesla flashing
1. SDRAM id read test fails
Refer to the previous ”SDRAM fault” chapter.
2. Flash manufacturer and device id read fails
a) If id read from all of the three flashes (D351, D352 and D353) fails
most like-
ly the problem is in D300.
Check D300 and control lines:
S FLDa7 (J351): positive pulses (1.8V)
S FLCS0X (J338): negative pulses (1.8V)
S FLOEX (J341): negative pulses (1.8V)
S FLCS1X (J339): negative pulses (1.8V)
S FLWEX (J342): negative pulses (1.8V)
S FLCS2X (J340): negative pulses (1.8V)
S FLAd5 (J350): positive pulses (1.8V)
S FLRPX (J343): high (1.8V)
S FLWPX (J347): low (1.8V)
If any of the signals is missing the problem is in D300.
b) If id read from one or two flashes fails