3-8 SPARCclassic/SPARCclassic X/SPARCstation LX Service Manual • November 1993
3.6 POST Error Messages
The POST error messages returned to the terminal are self-explanatory. For example,
if no DSIMM is installed in the system, POST will tell you that no DSIMM is
installed and the slot number of the SIMM slot. Use the error messages returned by
POST to troubleshoot the system.
3.7 Status Lights (LEDs) and Indicators
The LED at the front of the chassis lights up when the system is operating normally.
FIGURE 3-3 shows the location of the system LED. Chapter 4 “Troubleshooting
Procedures,” shows flow diagrams of actions to take when the system LED is not lit.
FIGURE 3-3 System Power LED on Front of System
This section describes the keyboard LED sequences displayed at power up when
POST fails. If a failure occurs in POST, the keyboard displays a specific LED pattern.
See
FIGURE 3-4 and TABLE 3-1. During normal system operation, the LEDs should not
be interpreted as diagnostic error indicators.
Following the system initialization, the operating system boots automatically, unless
the NVRAM configuration options specify not to do so.
Note – The Caps Lock key LED, located just above the left-hand Shift key, is not
used as a power-on test failure indicator, but flashes on and off while POST is
running.
Diskette drive
(optional)
System power LED
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