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SPARC T7-4 Server Service Manual

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Updated: February 2019
 
 

Interpreting LEDs

Use these steps to determine if an LED indicates that a component has failed in the server.

Steps
Description
Links
1.
Check the LEDs on the front and rear of the server.
2.
Check the LEDs on the individual components.

Note -  Component LEDs might not be lit even though the component is faulty. Use the instructions in these links to determine if the component has been diagnosed as being faulty.

Related Information

Front Panel Controls and LEDs

image:Illustration showing the front panel controls and LEDs.
No.
LED
Icon or Label
Description
1
Locator LED and button (white)
image:Icon for the Locator Button/LED
You can turn on the Locator LED to identify a particular server. When lit, the LED blinks rapidly. Turn on the Locator LED by pressing the Locator button, or see Locate the Server.
2
Server Service Required LED (amber)
image:Icon for the Service Required LED
The fmadm faulty command provides details about any faults that cause this indicator to light. See Check for Faults.
Under some fault conditions, individual component fault LEDs are lit in addition to the Server Service Required LED.
3
Power OK LED (green)
image:Icon for the Power OK LED
Indicates these conditions:

  • Off – Server is not running in its normal state. Server power might be off. The SPM might be running.

  • Steady on – Server is powered on and is running in its normal operating state. No service actions are required.

  • Fast blink – Server is running in standby mode and can be quickly returned to full function.

  • Slow blink – A normal but transitory activity is taking place. Slow blinking might indicate that server diagnostics are running or that the server is booting.
4
Power button
image:Icon for the Power button
The recessed Power button toggles the server on or off. See Power Off the Server (Power Button – Graceful Shutdown).
5
System Overtemp LED(amber)
image:Icon for the Overtemp LED
Indicates these conditions:

  • Off – Indicates a steady state, no service action is required.

  • Steady on – Indicates that a temperature failure event has been acknowledged and a service action is required.
6
Fan Module Fault LED(amber)
Rear FM
Indicates these conditions:

  • Off – Indicates a steady state, no service action is required.

  • Steady on – Indicates that a fan module failure event has been acknowledged and a service action is required on at least one of the fan modules.
7
PCIe Card Fault LED(amber)
Rear PCIe
Indicates these conditions:

  • Off – Indicates a steady state, no service action is required.

  • Steady on – Indicates that a failure event has been acknowledged and a service action is required on at least one of the PCIe cards.

Rear Panel Controls and LEDs

image:Illustration showing the rear I/O module LEDs.
No.
LED
Icon or Label
Description
1
AC 0 (left) and AC 1 (right) power LED
Indicates these conditions:

  • Off – No power is applied to the server.

  • Green – Power is applied to the server.
2
Net MGT port link LED
Indicates these conditions:

  • Off – No link is established.

  • On or blinking – A link is established.
3
Net MGT port speed LED
Indicates these conditions:

  • Off – The link is operating as a 10-Mbps connection.

  • On or blinking – The link is operating as a 100-Mbps connection.
4
Network port link LED
Indicates these conditions:

  • Off – No link is established.

  • Blinking – A link is established.
5
Network port speed LED
Indicates these conditions:

  • Off – The link is operating as a 10-Mbps connection or there is no link.

  • Amber on – The link is operating as a 100-Mbps connection.

  • Green on – The link is operating as a Gigabit connection (1000 Mbps).
6
AC 2 (left) and AC 3 (right) power LEDs
Indicates these conditions:

  • Off – No power is applied to the server.

  • Green – Power is applied to the server.
7
Locator LED and button (white)
 image:Icon for the Locator Button/LED
Turn on the Locator LED by pressing the Locator button, or see Locate the Server. When lit, the LED blinks rapidly.
8
Server Service Required LED (amber)
 image:Icon for the Service Required LED
The fmadm faulty command provides details about any faults that cause this indicator to light. See Check for Faults.
Under some fault conditions, individual component fault LEDs are lit in addition to the Service Required LED.
9
Power OK LED (green)
 image:Icon for the Power OK LED
Indicates these conditions:

  • Off – Server is not running in its normal state. System power might be off. The SPM might be running.

  • Steady on – Server is powered on and is running in its normal operating state. No service actions are required.

  • Fast blink – Server is running in standby mode and can be quickly returned to full function.

  • Slow blink – A normal but transitory activity is taking place. Slow blinking might indicate that system diagnostics are running or that the system is booting.
10
SP LED
SP
Indicates these conditions:

  • Off – AC power might have been connected to the power supplies.

  • Steady on, green – SPM is running in its normal operating state. No service actions are required.

  • Blink, green – SPM is initializing the Oracle ILOM firmware.

  • Steady on, amber – An SPM error has occurred and service is required.
11
Overtemp LED(amber)
 image:Icon for the Overtemp LED
Indicates these conditions:

  • Off – Indicates a steady state, no service action is required.

  • Steady on – Indicates that a temperature failure event has been acknowledged and a service action is required.
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