Lenovo ThinkServer TD200x Hardware Maintenance Manual page 86

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
System power (green)
Hard disk drive activity (green)
System locator (blue)
System information (amber)
System error (amber)
2. Look at the light path diagnostics panel on the front of the server. Lit LEDs on
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ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Hardware Maintenance Manual
Description
v Off: AC power is not present, or the power supply or the LED itself
has failed.
v 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.
v 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.
v Lit: The server is turned on.
v 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.
When this LED is flashing rapidly, it indicates that there is activity on a
hard disk drive.
Use this LED to visually locate the server among other servers. You
can use Lenovo Systems Director to light this LED remotely.
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 light path diagnostics panel for
more information.
When this LED is lit, it indicates that a system error has occurred. Use
the light path diagnostics panel and the system service label to further
isolate the error.
the light path diagnostics panel indicate the type of error that has occurred.
The following illustration shows the light path diagnostics panel LEDs that are
visible through the bezel.