Dell Precision 620 User Manual page 105

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