v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v If an action step is preceded by “(Trained technician only),” that step must be performed only by a trained
technician.
v Go to the IBM support website at http://www.ibm.com/supportportal/ to check for technical information,
hints, tips, and new device drivers or to submit a request for information.
Diagnostic
code Message Description Action
I.18008 [I.18008] Currently,
there is no additional
information for this
event.
Processors have
mismatched Internal
DDR3 Frequency.
1. Make sure that the microprocessor is on the
ServerProven website at
http://www.ibm.com/systems/info/x86servers/
serverproven/compat/us/.
2. Check the IBM support website for a firmware
update and update the server firmware to the
latest level (see “Updating the firmware” on
page 297).
3. (Trained technician only) Remove and
replace the affected microprocessor (error
LED is lit) with a supported type (see
“Installing a microprocessor and heat sink” on
page 282).
I.18009 [I.18009] A core speed
mismatch has been
detected for one or
more processor
packages.
Processors have
mismatched Core
Speed.
1. Make sure that the microprocessor is on the
ServerProven website at
http://www.ibm.com/systems/info/x86servers/
serverproven/compat/us/.
2. Check the IBM support website for a firmware
update and update the server firmware to the
latest level (see “Updating the firmware” on
page 297).
3. (Trained technician only) Remove and
replace the affected microprocessor (error
LED is lit) with a supported type (see
“Installing a microprocessor and heat sink” on
page 282).
I.1800A [I.1800A] A mismatch
has been detected
between the speed at
which a QPI link has
trained between two or
more processor
packages.
Processors have
mismatched Bus
Speed.
1. Make sure that the microprocessor is on the
ServerProven website at
http://www.ibm.com/systems/info/x86servers/
serverproven/compat/us/.
2. Check the IBM support website for a firmware
update and update the server firmware to the
latest level (see “Updating the firmware” on
page 297).
3. (Trained technician only) Remove and
replace the affected microprocessor (error
LED is lit) with a supported type (see
“Installing a microprocessor and heat sink” on
page 282).
Chapter 3. Diagnostics 31
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