Dell Precision 620 - Manual (Page 105)

System Board LEDs
The system board contains a number of LEDs that tell you the state of the CPUs, memory, and logic circuitry.
Table 5 lists the descriptions for the system board LEDs.
Table 5. Back Panel Diagnostic LED Codes
SNMP Platform Event Traps
Your system can generate several Simple Network Management Protocol (SNMP) platform event trap (PET) messages that are sent to network
management software to inform the network manager that specific events have occurred on your system.
Table 6 lists the SNMP platform event traps you system may create.
Table 6. SNMP Platform Event Trap
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S14 Possible system board resource
conflict Remove any internal options recently added, and restart the system
to retest
S15 Normal operating condition after
POST None.
CAUTION: Before servicing any components inside your computer, see " Safety First —For You and Your Computer ."
LED Description
CPU_MISMATCH Processors do not match in type or speed and may not operate properly.
MEC_MISMATCH RIMM pairs on the two MECs are missing or are not matched pairs.
Suspend to RAM (STR_LED) System is in a sleep state.
POWER_LED Power exists on the system board; do not service until the LED goes out.
STANDBY_LED System is in standby state.
Hard-disk drive (HD_LED) Hard-disk drive is active.
Description Code
BIOS boot failure 02 03 23 6f 00
Fan failure 02 03 04 06 01
Chassis intrusion 02 03 05 6f 00
Temperature failure 02 03 01 06 01
Invalid password 02 03 06 6f 01
Voltage failure 02 03 02 06 01
SOS enable / PC presence 02 03 25 6f 00