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.1800C [I.1800C] A cache type
mismatch has been detected for
one or more processor
packages.
Processors have one or more
cache levels with mismatched
type.
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 an applicable retain tip or
firmware update that applies to
this problem.
3. (Trained technician only) Remove
and replace the affected
microprocessor (error LED is lit)
with a supported type (see
“Replacing a microprocessor and
heat sink” on page 349).
I.1800D [I.1800D] A cache associativity
mismatch has been detected for
one or more processor
packages.
Processors have one or more
cache levels with mismatched
associativity.
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 an applicable retain tip or
firmware update that applies to
this problem.
3. (Trained technician only) Remove
and replace the affected
microprocessor (error LED is lit)
with a supported type (see
“Replacing a microprocessor and
heat sink” on page 349).
I.1800E [I.1800E] A processor model
mismatch has been detected for
one or more processor
packages.
Processors have mismatched
Model Number.
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 an applicable retain tip or
firmware update that applies to
this problem.
3. (Trained technician only) Remove
and replace the affected
microprocessor (error LED is lit)
with a supported type (see
“Replacing a microprocessor and
heat sink” on page 349).
126 System x3530 M4 Type 7160: Installation and Service Guide