System-Board Leds - IBM BladeCenter HS20 Problem Determination And Service Manual

System-board LEDs

The following illustration shows the LEDs on the system board. You must remove
the blade server from the BladeCenter unit, open the cover, and press the light path
diagnostics switch to light any error LEDs that were turned on during processing.
DIMM 3 Error LED
(CR5)
DIMM 4 Error LED
(CR6)
I/O expansion
connectors
SAS 1 hard
disk drive LED
(CR262)
The following illustration shows the light path diagnostics panel on the system
board.
8
BladeCenter HS20 Type 7981 and 1884: Problem Determination and Service Guide
Switch
SW2-6
SW2-7
SW2-8
Light path diagnostics (SW4)
SAS trays/connectors
NMI
NMI error LED
MIS
Microprocessor mismatch error LED
SBRD
System-board error LED
TEMP
Over temperature error LED
Light path diagnostics LED
Light path diagnostics switch
Function
Clear CMOS
Reserved
Bypass power-on password
DIMM 1 error LED (CR201)
DIMM 2 error LED (CR4)
Microprocessor 1 error LED (CR12)
Microprocessor 2 error LED (CR13)
3V lithium battery
SAS 0 Hard disk drive LED (CR260)
Reserved
Control panel
connector