Table of Contents
Advertisement
1. Look at the control panel on the front of the compute node.
Figure 73. Compute node control panel buttons, connectors, and LEDs
Table 16. Compute node control panel buttons, connectors, and LEDs
1
USB connector
2
Console breakout cable connector
3
Drive activity LED (green)
4
Drive status LED (yellow)
• If the fault LED is lit, it indicates that an error has occurred; view the light path diagnostics panel and
LEDs to isolate the failing component.
• If the I/O expansion unit fault LED is lit, it indicates that an error has occurred in an I/O expansion unit
that is installed in the compute node; check the XClarity Controller or CMM event log and the light
path diagnostics LEDs to isolate the failing component.
2. To view the light path diagnostics LEDs, select one of the following procedures:
• You can view the LEDs through the CMM led command, the CMM web interface and the Lenovo
XClarity Administrator application (if installed).
– For more information about the CMM led command, see the Flex System Chassis Management
Module: Command-Line Interface Reference Guide at http://flexsystem.lenovofiles.com/help/
topic/com.lenovo.acc.cmm.doc/cli_command_led.html.
– From the CMM web interface, select Compute Nodes from the Chassis Management menu. For
more information, see the "Flex System Chassis Management Module: User's Guide" at http://
flexsystem.lenovofiles.com/help/topic/com.lenovo.acc.cmm.doc/cmm_user_guide.html. All fields
and options are described in the CMM web interface online help.
– For more information about the Lenovo XClarity Administrator application, see https://support.
lenovo.com/us/en/ documents/LNVO-XCLARIT.
• If you are in the same location as the compute node, you can complete the following steps:
a. Remove the compute node from the Lenovo Flex System chassis, (see "Remove the compute
node from the chassis" on page 24 for instructions).
b. Carefully lay the compute node on a flat, static-protective surface.
c. Open the compute node cover (see "Remove the compute node cover" on page 42 for
instructions).
d. Remove the air baffle.
e. Press and hold the power button. When you press the power button, LEDs on the light path
diagnostics panel and the system board will be lit if there are any hardware-related issues.
Note: The power source for light path diagnostics is designed only to last a short time. If you
press the power button and the light path diagnostics LED lights, light path diagnostics is charged
to light the LEDs.
98
ThinkSystem SN550 Compute Node Maintenance Manual
5
Power button/LED (green)
6
Identification LED
7
Fault LED (yellow)
8
USB management button
Advertisement
Table of Contents
