Lenovo ThinkServer TD200x Hardware Maintenance Manual page 86

• Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
• See Chapter 8 "Parts Listing, TD200x Machine Types 3719, 3821, 3822, and 3823" on page 221 to
determine which components are customer replaceable units (CRU) and which components are field
replaceable units (FRU).
• 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
CPU 2 error LED
CPU mismatch LED
VRM failure LED
System-board error
LED
Battery failure LED
78
ThinkServer TD200x Hardware Maintenance Manual
Description
Microprocessor 2 has failed, is
missing, or has been incorrectly
installed.
Note: (Trained service technician
only) Make sure that the
microprocessors are installed
in the correct sequence; see
"Installing a microprocessor and
heat sink" on page 208.
A mismatched microprocessor
has been installed.
Note: All microprocessors must
have the same speed and cache
size.
Microprocessor 2 VRM has failed
or is incorrectly installed.
System-board CPU VRD, power
voltage regulators, or both have
failed.
Battery low.
Action
a. Check the system-event log to determine the
reason for the lit LED.
b. Find the failing, missing, or mismatched
microprocessor by checking the LEDs on the
system board.
c. (Trained service technician) Reseat the failing
microprocessor.
d. Replace the following components one at a time,
in the order shown, restarting the server each
time:
1) (Trained service technician only) Failing
microprocessor
2) (Trained service technician only) System
board
a. Run the Setup utility and view the microprocessor
information to compare the installed
microprocessor specifications.
b. (Trained service technician only) Remove and
replace one of the microprocessors so that they
both match.
a. Reseat the VRM
b. Replace the following components one at a time,
in the order shown, restarting the server each
time:
1) VRM
2) (Trained service technician only) System
board
c. Replace the VRM
(Trained service technician only) Replace the system
board.
a. Replace the CMOS lithium battery, if necessary.
b. (Trained service technician only) Replace the
system board.