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1 Server processor bus 8 Power supply
2 Microprocessor 9 Fan
3 VRM 10 PCI bus
4 Microprocessor/memory configuration 11 System board
5 Memory 12 Temperature
6 NMI 13 System-event log
7 Hard disk drive/RAID 14 USB ports
The following table lists the EasyLED diagnostics LEDs, the problems that they
indicate, and actions to solve the problems.
v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See the Chapter 8, “Parts Listing, TD200x Machine Types 3719, 3821, 3822, and 3823,” on page 237 to
determine which components are customer replaceable units (CRU) and which components are field
replaceable units (FRU).
v If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Lit EasyLED
diagnostics LED with
the system-error or
information LED also
lit Description Action
System-event log
(LOG)
A system error occurred. View the contents of the system-event log (see “Event
logs” on page 27).
Temperature The system temperature has
exceeded a threshold level.
1. See the system-event log for the source of the
fault (see “System-event log” on page 38).
2. Make sure that the airflow in the server is not
blocked.
3. Make sure that the room temperature is neither too
hot nor too cold (see “Environment” in
“Specifications” on page 17).
78 ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Hardware Maintenance Manual