IBM BladeCenter HS20 Installation And User Manual page 30

The following illustration shows the LEDs on the system board.
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.
18
BladeCenter HS20 Type 7981: Installation and User's Guide
Light path diagnostics (SW4)
SAS trays/connectors
Table 2. System board LEDs
LED name and location
DIMM 1 error LED (CR201)
DIMM 2 error LED (CR4)
DIMM 3 error LED (CR5)
DIMM 4 error LED (CR6)
SAS hard disk drive LED (CR260 and
CR262)
BMC fault LED (CR11)
Microprocessor 1 error LED (CR12)
Microprocessor 2 error LED (CR13)
System board fault LED (CR30)
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
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)
Description
There is a problem with the corresponding DIMM.
Reserved
There is a problem with the BMC.
There is a problem with the corresponding
microprocessor.
There is a problem with the system board.
Reserved
Control panel
connector