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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 Hardware Maintenance Manual to determine which components are customer replaceable units
(CRUs) and which components are field replaceable units (FRUs).
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
Power supply A power supply has failed or has
been removed.
Note: In a redundant power
configuration, the dc power LED on
one power supply might be off.
1. Check the individual power-supply LEDs.
2. Reseat the following components:
a. Power supply
b. (Trained service technician only) Power-supply
cage cables
3. Replace the following components one at a time,
in the order shown, restarting the server each time:
a. Power supply
b. (Trained service technician only) Power-supply
cage
DASD/RAID A hard disk drive, SAS controller, or
RAID adapter error has occurred.
Notes:
1. This LED is also lit when a hard
disk drive is removed from the
server.
2. The error LED on the failing
hard disk drive is also lit.
3. Check the system-event log for
a RAID error.
1. Reinstall the removed drive.
2. Reseat the following components:
a. Failing hard disk drive
b. SAS hard disk drive backplane
c. SAS signal and power cables
d. System board
e. ServeRAID adapter
3. Replace the components one at a time, in the
order shown, restarting the server each time.
NMI A hardware error has been reported
to the operating system.
1. See the system-event log (see “Event logs” on
page 176).
2. If the PCI LED is lit, follow the instructions for that
LED.
3. If the MEM LED is lit, follow the instructions for
that LED.
4. Restart the server.
22 ThinkServer TD200 Types 3724, 3808, 3809, 3815, 3817, 3824, 3826, 3836: Installation and User Guide