User Guide

PAMS
Technical Documentation
RAE-3
8. Troubleshooting
Page 8 – 31
Issue 1 06/01
2.9 Memory Troubleshooting
2.9.1 Memory fails In Boot Up tests, CMT Backlight is blinking
If the device won’t boot up and CMT display backlight is blinking
⇒ FLASH 0 (D351) probably ok !
To measure signals from D352, D353, D350 and D354 the device needs to re-
booted up constantly since the lines are active only a short time in the begin-
ning of the boot.
Also CCONT WATCHDOG will shut the device off after 32 seconds !
Time between each memory device blinks is 1 second and time between differ-
ent memory device blinks is 2 seconds.
For example if FLASH1 and Serial Flash are broken the blinking sequence
goes:
2 blinks with 1 sec interval (FLASH fault)
2 sec without blinks
4 blinks with 1 sec intervals (Serial Flash fault)
2 sec without blinks
then to the beginning again