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#### Diagnostics Process

The following flowchart illustrates the complementary relationship of the different diagnostic tools and indicates a default sequence of use.

Figure 15 Diagnostics Flowchart

The following table provides brief descriptions of the troubleshooting actions shown in the flowchart. It also provides links to topics with additional information on each diagnostic action.

Table 10 Diagnostic Flowchart Reference Table

Flowchart | Diagnostic Action | Possible Outcome | Additional Information
--- | --- | --- | ---
1 | Check Power OK and AC Present LEDs on the server. | The Power OK LED is located on the front and rear of the chassis. The AC Present LED is located on the rear of the server on each power supply. If these LEDs are not on, check the power source and power connections to the server. | Interpreting Diagnostic LEDs
2 | Run the Oracle ILOM `show faulty` command to check for faults. | The `show faulty` command displays the following kinds of faults: E nvironmental faults PSH-detected faults POST-detected faults Faulty FRUs are identified in fault messages using the FRU name. | Service-Related Oracle ILOM Commands Check for Faults (`show` `faulty` Command)
3 | Check the Oracle Solaris log files for fault information. | The Oracle Solaris message buffer and log files record system events, and provide information about faults. If system messages indicate a faulty device, replace the FRU. For more diagnostic information, review the Oracle VTS report. (Flowchart item 4) | Interpreting Log Files and System Messages
4 | Run Oracle VTS software. | Oracle VTS is an application you can run to exercise and diagnose FRUs. To run Oracle VTS, the server must be running the Oracle Solaris OS. If Oracle VTS reports a faulty device, replace the FRU. If Oracle VTS does not report a faulty device, run POST. (Flowchart item 5) | Verifying Oracle VTS Installation
5 | Run POST. | POST performs basic tests of the server components and reports faulty FRUs. | Managing Faults (POST) Oracle ILOM Properties That Affect POST Behavior
6 | Determine if the fault was detected by the Oracle ILOM fault management software. | Determine if the fault is an environmental fault or a configuration fault. If the fault listed by the `show faulty` command displays a temperature or voltage fault, then the fault is an environmental fault. Environmental faults can be caused by faulty FRUs (power supply or fan), or by environmental conditions such as ambient temperature that is too high or lack of sufficient airflow through the server. When the environmental condition is corrected, the fault will automatically clear. If the fault indicates that a fan or power supply is bad, you can replace the FRU. You can also use the fault LEDs on the server to identify the faulty FRU (fans and power supplies). | Check for Faults (`show` `faulty` Command)
7 | Determine if the fault was detected by PSH. | If the fault displayed included a uuid and sunw‐msg-‐id property, the fault was detected by the PSH software. If the fault is a PSH-detected fault, refer to the PSH Knowledge Article web site for additional information. The Knowledge Article for the fault is located at the following link: http://www.sun.com/msg/message-ID where message-ID is the value of the sunw-msg-id property displayed by the `show faulty` command. After the FRU is replaced, perform the procedure to clear PSH-detected faults. | Managing Faults (PSH) Clear PSH-Detected Faults
8 | Determine if the fault was detected by POST. | POST performs basic tests of the server components and reports faulty FRUs. When POST detects a faulty FRU, it logs the fault, and if possible, takes the FRU offline. POST-detected FRUs display the following text in the fault message: `Forced fail` reason In a POST fault message, reason is the name of the power-on routine that detected the failure. | Managing Faults (POST) Clear POST-Detected Faults
9 | Contact technical support. | The majority of hardware faults are detected by the server's diagnostics. In rare cases a problem might require additional troubleshooting. If you are unable to determine the cause of the problem, contact your service representative for support. |

##### Related Information

- Diagnostics Overview

- Interpreting Diagnostic LEDs

- Managing Faults (Oracle ILOM)

- Interpreting Log Files and System Messages

- Managing Faults (PSH)

- Managing Faults (POST)

- Managing Components (ASR)

- Verifying Oracle VTS Installation

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