System-Board Leds - IBM System x3755 M3 7164 Installation And User Manual

System-board LEDs

The following illustration shows the light-emitting diodes (LEDs) on the system
board.
Notes:
1. Error LEDs remain lit only while the server is connected to power. If you
2. You can also view the error LED status on the fan cage and the PCI riser-card
DIMM 17 - 24 error LEDs
disconnect power to the server, you can press and hold the light path
diagnostics button to light the error LEDs on the system board.
assembly.
Standby power LED
DIMM 1 - 8 error LEDs
PCI slot 1 error LED
PCI slot 2 error LED
PCI slot 3 error LED
PCI slot 4 error LED
System board error LED
iBMC heartbeat LED
Battery error LED
Light path Light path
diagnostics diagnostics
LED button
Fan 1 Fan 2 Fan 3
error LED error LED error LED
Chapter 2. Installing optional devices
System-error Locator LED
LED
Microprocessor 1
error LED
Microprocessor 2
error LED
Microprocessor
mismatch LED
DIMM 16 - 9
error LEDs
DIMM 32 - 25
error LEDs
Microprocessor 4
error LED
Microprocessor 3
error LED
Fan 4 Fan 5
error LED error LED
27