IBM System x3850 Installation Manual page 74

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 parts listing in the Problem Determination and Service Guide 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 LED
also lit Description
OVERSPEC There is insufficient power to power
the system. The NON RED and
LOG LEDs might also be lit.
PS 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.
LINK Reserved
CPU A microprocessor has failed, is
missing, or has been improperly
installed.
Note: Make sure that the
microprocessors are installed in the
correct sequence; see "Installing an
additional microprocessor" on page
16.
62
IBM System x3850 Type 8864: Installation Guide
Action
1. Add an optional power supply if only one power
supply is installed.
2. Use 220 V ac input power.
3. Reseat the following components:
a. Power supply
b. (Trained service technician only) Power
backplane
4. Replace the components listed in step 3 one at a
time, in the order shown, restarting the server each
time.
5. Use 220 V ac instead of 110 V ac.
1. Reinstall the removed power supply.
2. Check the individual power-supply LEDs to find the
failing power supply.
3. Reseat the following components:
a. Failing power supply
b. (Trained service technician only) Power
backplane
4. Replace the components listed in step 3 one at a
time, in the order shown, restarting the server each
time.
5. If a 240 V ac fault has occurred, ac power must be
removed before dc power can be restored.
1. Check the BMC log or the system-error log to
determine the reason for the lit LED.
2. Find the failing, missing, or mismatched
microprocessor by checking the LEDs on the
microprocessor tray.
3. Reseat the following components:
a. (Trained service technician only) Failing
microprocessor
b. Microprocessor tray
4. Replace the following components one at a time,
in the order shown, restarting the server each time.
a. (Trained service technician only) Failing
microprocessor
b. (Trained service technician only)
Microprocessor tray