Troubleshooting "can't power on" component errors on Sun Fire [TM] v1280, E2900, 3800, 4800, 4810, 6800, E4900, E6900, or Netra 1280, 1290 Servers (Doc ID 1013120.1)

Last updated on JULY 02, 2023

Applies to:

Purpose

Description

Failure to power on a System Board, I/O Board, Repeater, Fan Tray, or System Controller.

This document addresses situations where the system is powered on, but warnings or errors indicate that a particular component could not be powered on, or added to the hardware configuration. The component in question may be a System Board (SB), I/O Board (IB), Repeater (RP), Fan Tray (FT), or System Controller (SC).

System Type:

• Sun Fire [TM] 3800, 4800, 4810, E4900, 6800, E6900
• Sun Fire [TM] v1280, E2900, and Netra [TM] 1280, 1290

Symptoms:

• The issue may be described as a System Board (SB), I/O Board (IB), Repeater (RP), Fan Tray (FT), or even System Controller (SC) failure.
• The showenvironment command may show an "ERROR LOW" status for the component in question and a 3.3 VDC sensor value of 0.xx (in other words, less then the LoWarn value).
• This output is extremely useful for diagnosing power failure events when showlogs data has scrolled off the error buffer (when the other symptoms described below are not present in error logs for any number of reasons).
• The example below indicates an ERROR LOW status for SB0 and SB2 is also provided to show what "normal" values are in relation:

Situations excluded from this document:

• The entire system can not be powered on;  See Document 1010053.1 for instructions on troubleshooting if your system will not power on.
• Power Supply warnings or errors;  See Document 1007049.1 for instructions on troubleshooting errors or warnings associated to a Power Supply Unit.

Troubleshooting Steps