System-Board Leds - IBM System x3550 Type 7978 Problem Determination And Service Manual

System-board LEDs

The following illustration shows the light-emitting diodes (LEDs) on the system
board.
Remote Supervisor
Adapter II
SlimLine error LED
Power B error LED
Power A error LED
Power C error LED
Power D error LED
Power-on LED
Location LED
System-error LED
PCI slot 2 error LED
BMC status
LED
System-board
fault LED
Fan 1 error LED
Fan 2 error LED
System-board battery
error LED
PCI slot 1
error LED
DIMM 5 error LED
DIMM 6 error LED
DIMM 7 error LED
DIMM 8 error LED
Light path diagnostics
active LED
Light path diagnostics switch
RAID error LED
Microprocessor 2
error LED
Microprocessor 1
error LED
DIMM 1 error LED
DIMM 2 error LED
DIMM 3 error LED
DIMM 4 error LED
Fan 6 error LED
Fan 5 error LED
Fan 4 error LED
Fan 3 error LED
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Chapter 1. Introduction