Memory-card LEDs

The following illustration shows the LEDs on a memory card.

DIMM 1 error LED
DIMM 2 error LED
DIMM 3 error LED
DIMM 4 error LED
DIMM 5 error LED
DIMM 6 error LED
DIMM 7 error LED
DIMM 8 error LED
Memory
card only
error LED
Light path
diagnostics
button
Light path
diagnostics
button
power LED
DIMM 5
DIMM 6
DIMM 7
DIMM 8
DIMM 1
DIMM 2
DIMM 3
DIMM 4
Memory
card/DIMM
error LED
32 IBM System x3850 X5 and x3950 X5 Types7145, 7146, 7143, and 7191: Installation and User's Guide