Lenovo ThinkServer TD200x Hardware Maintenance Manual page 87

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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 239 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 light path
diagnostics LED with
the system-error or
information LED also
lit Description
System-event log A system error occurred.
(LOG)
Temperature The system temperature has
exceeded a threshold level.
Server processor bus
Microprocessor
VRM
Microprocessor/memory configuration
Memory
NMI
Hard disk drive/RAID
The following table lists the light path diagnostics LEDs, the problems that they
indicate, and actions to solve the problems.
8
Power supply
9
Fan
10
PCI bus
11
System board
12
Temperature
13
System-event log
14
USB ports
Action
View the contents of the system-event log (see "Event
logs" on page 27).
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).
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Chapter 5. Diagnostics