Lenovo ThinkSystem SR550, Maintenance Manual

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6 System error LED
Status Color Description Action
On Yellow An error has been detected on the server.
Causes might include but not limited to the
following errors:
• The temperature of the server reached
the non-critical temperature threshold.
• The voltage of the server reached the
non-critical voltage threshold.
• A fan has been detected to be running at
low speed.
• A fan has been removed.
• The power supply has a critical error.
• The power supply is not connected to
the power.
Check the event log to determine the exact
cause of the error.
For information about troubleshooting, see
“Troubleshooting by symptom” on page
170 .
Off None The server is off or the server is on and is
working correctly. None.
Rear view
The rear of the server provides access to several components, including the power supplies, PCIe adapters,
and Ethernet connectors.
The following illustration shows the rear view of the server.
Figure 11. Rear view of the server
Table 7. Components on the rear of the server
Callout Callout
1
PCIe slot 1
2
PCIe slot 2
3
PCIe slot 3
4
PCIe slot 4
5
PCIe slot 5
6
PCIe slot 6
7
Power supply 2 (available on some models)
8
Power supply 1
9
NMI button
10
USB 3.0 connector
11
USB 3.0 connector
12
VGA connector
13
Ethernet connector 2 (RJ-45)
14
Ethernet connector 1 (RJ-45)
22
ThinkSystem SR550 Maintenance Manual