Product guide

26 System Description
27MAXDATA PLATINUM 90004R Server System
Chassis Top
I/O Subsystem Serviceability Indicators
Figure 11 shows the I/O subsystem serviceability indicators. The indicators are located on the I/O board
and are visible through the system top cover via light pipes. The I/O serviceability indicators provide
system power, system reset, and interlock status for various subsystem and module connectors.
These LEDs are powered by standby voltage to provide status as long as AC power is supplied to
the system.
OM12939
System In Reset
System Power Good
IO Bd/Midplane Interloc
k
IO Riser/IO Bd Interloc
k
Proc/Mem/CPU Bd Interloc
k
SCSI Bd/Midplane Interloc
k
Attention
OK
OK
OK
OK
OK
Figure 11. I/O Subsystem Serviceability Indicators
System In Reset (amber) On – system reset asserted
Off – system reset not asserted
System Power Good
(green)
On – system power within normal operational range
Off – system power failure
I/O Board to Midplane
Board Interlock (green)
On – I/O subsystem inserted properly into midplane board
Off – I/O subsystem to midplane board interlock not detected
I/O Riser to I/O Board
Interlock (green)
On – I/O riser inserted properly into I/O board
Off – I/O riser to I/O board interlock not detected
Processor/Memory/CPU
Board Interlock (green)
On – processor/memory subsystem inserted properly into midplane board
Off – processor/memory subsystem to midplane board interlock not detected
SCSI Board to Midplane
Board Interlock (green)
On – SCSI backplane board inserted properly into midplane board
Off – SCSI backplane board to midplane board interlock not detected