System Pulse Leds - Lenovo 653417U Installation And User Manual

v Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
Component LED Description
IMM heartbeat LED Indicates the status of the boot
process of the IMM.
When the server is connected to
power this LED flashes quickly to
indicate that the IMM code is
loading. When the loading is
complete, the LED stops flashing
briefly and then flashes slowly to
indicate that the IMM if fully
operational and you can press the
power-control button to start the
server.
PCI slots error LEDs An error has occurred on a PCI bus
or on the system board. An
additional LED is lit next to a
failing PCI slot.
H8 heartbeat LED power-on and power-off
sequencing.

System pulse LEDs

The following LEDs are on the system board and indicates the system power-on and power-off
sequencing and boot progress (see "System-board LEDs" on page 21 for the location of these LEDs).
Table 18. System pulse LEDs
LED
H8 heartbeat
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ThinkServer RS210, Types 6531, 6532, 6533, and 6534: Installation and User Guide
Action
If the LED does not begin flashing within 30 seconds
of when the server is connected to power, complete
the following steps:
1. (Trained service technician only) Rerecover the
2. (Trained service technician only) Replace the
1. Check the system-event log for information about
2. If you cannot isolate the failing PCI card through
3. If the failure remains, go to http://
1. If the LED flashes at 1Hz, it is functioning
2. If the LED is not flashing, (trained service
Description
power-on and power-off sequencing.
firmware (see "Recovering the UEFI firmware" on
page 104).
system board.
the error.
the LEDs and the information in the system-event
log, remove one PCI card at a time, and restart the
server after each PCI card is removed.
www.lenovo.com/support for additional
troubleshooting information.
properly and no action is necessary.
technician only) replace the system board.
Action
1. If the LED flashes at 1Hz, it is
functioning properly and no
action is necessary.
2. If the LED is not flashing, (trained
service technician only) replace
the system board.