Lenovo THINKSERVER 3821 User Manual
Page 85
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Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
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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).
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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 LEDs with the
system-error or information LED also lit
Description
System power (green)
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Off: AC power is not present, or the power supply or the LED itself
has failed.
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Flashing rapidly (4 times per second): The server is turned off
and is not ready to be turned on. The power-control button is
disabled. Approximately 3 minutes after the server is connected to
ac power, the power-control button becomes active.
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Flashing slowly (once per second): The server is turned off and is
ready to be turned on. You can press the power-control button to
turn on the server.
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Lit: The server is turned on.
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Fading on and off: The server is in a reduced-power state. To
wake the server, press the power-control button or use the IMM
Web interface.
Hard disk drive activity (green)
When this LED is flashing rapidly, it indicates that there is activity on a
hard disk drive.
System information (amber)
When this amber LED is lit, it indicates that information about a
suboptimal condition in the server is available in the IMM event log or
in the system-event log. Check the EasyLED panel for more
information.
System error (amber)
When this LED is lit, it indicates that a system error has occurred. Use
the EasyLED panel and the system service label to further isolate the
error.
2. Look at the EasyLED panel on the front of the server. Lit LEDs on the EasyLED
panel indicate the type of error that has occurred.
The following illustration shows the EasyLED panel LEDs that are visible
through the bezel.
Chapter 5. Diagnostics
77