Lenovo System x3850 X6 Installation And Service Manual page 174

Table 34. Light path diagnostics LEDs description
LED
3V battery error LED
AC power LED
Board error LED
Check log LED
DC power LED
DIMM error LED
Drive activity LEDs
Drive status LEDs
Ethernet activity LED
Ethernet link LEDs
Fan error LED
Locate button/LED
Microprocessor error LED
PCIe slot error LED
160
System x3850 X6 and x3950 X6 Installation and Service Guide
Description
When this LED is lit, it indicates that a standard I/O book battery error
has occurred.
Each hot-swap power supply has an ac power LED and a dc power
LED. When the ac power LED is lit, it indicates that sufficient power is
being supplied to the power supply through the power cord. During
normal operation, both the ac and dc power LEDs are lit.
When this yellow LED is lit, it indicates that the book board error has
occurred.
When this LED is lit (yellow), it indicates that there are errors that
require further diagnosis. Check the IMM event log for additional
information. See "Event logs" on page 161 for more information about
event logs.
Each hot-swap power supply has a dc power LED and an ac power
LED. When the dc power LED is lit, it indicates that the power supply
is supplying adequate dc power to the system. During normal
operation, both the ac and dc power LEDs are lit.
When this LED is lit, it indicates that a memory error has occurred.
These LEDs are on SAS or SATA hard disk drives and solid state
drives. Each hot-swap drive has an activity LED, and when this LED is
flashing, it indicates that the drive is in use. When this LED is solid, it
indicates that the drive is powered on but not in use.
These LEDs are on SAS or SATA hard disk drives and solid state
drives. When one of these LEDs is lit, it indicates that the drive has
failed. When this LED is flashing slowly (one flash per second), it
indicates that the drive is being rebuilt. When the LED is flashing
rapidly (three flashes per second), it indicates that the controller is
identifying the drive.
When these LEDs are lit, they indicate that the server is transmitting to
or receiving signals from the Ethernet LAN that is connected to the
Ethernet port.
When these LEDs are lit, they indicate that there is an active link
connection on the 100BASE-TX, 1000BASE-TX, or 10GBASE-TX
interface for the Ethernet port.
When this LED is lit, it indicates that a fan has failed, is operating too
slowly, or has been removed.
Press this button to visually locate the server among other servers.
When you press the locate button, the LED is lit and remains lit until
you press it again to turn it off. This button is also used as the physical
presence for the Trusted Platform Module (TPM). You can use
management software, such as Lenovo XClarity Administrator
software, to light this LED remotely. This LED is controlled by the
IMM2.
When this LED is lit, it indicates that a microprocessor error has
occurred.
When these LEDs are lit, they indicate that an error has occurred in
PCIe slots.