Lenovo x3650 M4 BD 5466 Installation And Service Manual page 41

Important:
1. Before you change any switch settings or move any jumpers, turn off the server; then, disconnect all
power cords and external cables. (Review the information on page "Safety" on page v, "Installation
guidelines" on page 30, "Handling static-sensitive devices" on page 32, and "Turning off the server"
on page 19.
2. Any system-board switch or jumper blocks that are not shown in the illustrations in this document
are reserved.
System-board LEDs
The following illustration shows the light-emitting diodes (LEDs) on the system board.
Figure 15. System board LEDs
Table 4. System board LEDs definition
LED name
Error LEDs
RTMM heartbeat LED
IMM 2 heartbeat LED
Description
When an error LED is lit, it indicates that the associated
component has failed.
Power-on and power-off sequencing.
Indicates the status of the boot process of the IMM2.
When the server is connected to power this LED flashes
quickly to indicate that the IMM2 code is loading. When
the loading is complete, the LED stops flashing briefly
and then flashes slowly to indicate that the IMM2 if fully
operational and you can press the power-control button
to start the server.
Chapter 2
.
Installing optional devices
27