IBM x3400 7975 - System-Board Leds

System-board LEDs
The following illustration shows the LEDs on the system board.
1
2
3
4
5
6
7
8
9
10
11
12
DIMM LEDs
Slot 1
error LED
Slot 2
error LED
Slot 3
error LED
Slot 4
error LED
Slot 5
error LED
Slot 6
error LED
Microprocessor
mismatch
LED
DIMM
error LEDs
1 through 12
Microprocessor 1
error LED
Microprocessor 2
error LED
VRM error
LED
BMC heartbeat
LED
ServeRAID
error LED
Battery LED
14 System x3400 Types 7973, 7974, 7975, and 7976: Problem Determination and Service Guide