Dell PowerEdge T100 Hardware Owner's Manual - Page 16

Diagnostic Lights - processor

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Diagnostic Lights The four diagnostic indicator lights on the system front panel display error codes during system startup. Table 1-5 lists the causes and possible corrective actions associated with these codes. A highlighted circle indicates the light is on; a non-highlighted circle indicates the light is off. NOTE: If the power LEDs blink amber, there is a problem with the power supply. If the power LED shows a solid amber, a BIOS failure occurred before Power-On Self Test (POST). Table 1-5. Diagnostic Indicator Codes Code Causes Corrective Action The computer is in a Plug the computer into a working normal off condition or a electrical outlet and press the possible pre-BIOS failure power button. has occurred. The diagnostic lights are not lit after the system successfully boots to the operating system. The system is in a normal Information only. operating condition after POST. BIOS checksum failure detected; system is in recovery mode. See "Getting Help" on page 139. Possible processor failure. See "Troubleshooting the Microprocessor" on page 126. Memory failure. See "Troubleshooting System Memory" on page 115. Possible expansion card See "Troubleshooting Expansion failure. Cards" on page 124. 16 About Your System

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16
About Your System
Diagnostic Lights
The four diagnostic indicator lights on the system front panel display error
codes during system startup. Table 1-5 lists the causes and possible corrective
actions associated with these codes. A highlighted circle indicates the light is
on; a non-highlighted circle indicates the light is off.
NOTE:
If the power LEDs blink amber, there is a problem with the power supply. If
the power LED shows a solid amber, a BIOS failure occurred before Power-On Self
Test (POST).
Table 1-5.
Diagnostic Indicator Codes
Code
Causes
Corrective Action
The computer is in a
normal off condition or a
possible pre-BIOS failure
has occurred.
The diagnostic lights are
not lit after the system
successfully boots to the
operating system.
Plug the computer into a working
electrical outlet and press the
power button.
The system is in a normal
operating condition after
POST.
Information only.
BIOS checksum failure
detected; system is in
recovery mode.
See "Getting Help" on page 139.
Possible processor failure.
See "Troubleshooting the
Microprocessor" on page 126.
Memory failure.
See "Troubleshooting System
Memory" on page 115.
Possible expansion card
failure.
See "Troubleshooting Expansion
Cards" on page 124.