System-Board Leds - IBM x3400 7975 Problem Determination And Service Manual

System-board LEDs

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