Lenovo THINKSERVER 3821 - Manual (Page 88)

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
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 listed in step 2 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 “System-event log”
on page 38).
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.
80 ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Hardware Maintenance Manual