Technical data

Overview and Updates
NVR LED Codes
The NVR LED codes represent continued power-on testing. If an error occurs during this
testing sequence, a hexadecimal code appears with FRU and error code information on the
monitor screen.
If the system does not enter console mode (>>>) or the hex code DD is not displayed on
the LEDs, use Tables 1-6 and 1-7 to isolate the failed FRU.
Table 1-6 NVR LED Codes
LED Display Hex Code Solution 1 Solution 2
oo•••o•o
3A 1 2
oo•••o••
3B 1 2
oo••••oo
3C 1 2
oo••••o•
3D 1 2
oo•••••o
3E 1 2
oo••••••••••••
3F All Tests
Passed
Table 1-7 NVR LED Codes Action Table
Step Action
1 Reseat I/O module
2 Replace I/O module
1-11