IBM LS21 - BladeCenter - 7971, Service Manual

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v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v
See Chapter 3, “Parts listing, Types 7971 and 7972,” on page 59 to determine which components are CRUs
and which components are FRUs.
v If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Error code Description Action
166-420-001 System Management: Failed. (BMC
indicates failure in I2C bus test.)
1. Remove the blade server from the BladeCenter
unit, wait 30 seconds, and reseat it in the
BladeCenter unit; then, run the test again.
2. Update the BMC firmware and run the test again.
3. Remove the BladeCenter Storage Expansion Unit
3 and run the test again. If the error does not
repeat, replace the BladeCenter Storage
Expansion Unit 3.
4. (Trained service technician only) Replace the
system board assembly.
166-421-001 System Management: Failed. (BMC
indicates failure in I2C bus test.)
1. Remove the blade server from the BladeCenter
unit, wait 30 seconds, and reseat it in the
BladeCenter unit; then, run the test again.
2. Update the BMC firmware and run the test again.
3. Remove the high-speed expansion card (if one is
installed) and run the test again. If the error does
not repeat, replace the high-speed expansion
card.
4. (Trained service technician only) Replace the
system board assembly.
166-422-001 System Management: Failed. (BMC
indicates failure in I2C bus test.)
1. Remove the blade server from the BladeCenter
unit, wait 30 seconds, and reseat it in the
BladeCenter unit; then, run the test again.
2. Update the BMC firmware and run the test again.
3. Remove the I/O-expansion card and run the test
again. If the error does not repeat, replace the
I/O-expansion card.
4. (Trained service technician only) Replace the
system board assembly.
166-nnn-001 System Management: Failed. BMC indicates
failure in self test.
Note:
v nnn = 300 to 320
v nnn = 400 to 424 (excluding 403 and 419
to 422)
1. Remove the blade server from the BladeCenter
unit, wait 30 seconds, and reseat it in the
BladeCenter unit; then, run the test again.
2. Update the BMC firmware and run the test again.
3. (Trained service technician only) Replace the
system board assembly.
180-xxx-000 Diagnostics LED failure. Run the LED test in the diagnostics program.
180-xxx-001 Failed front LED panel test.
1. Reseat the control-panel connector.
2. Replace the bezel assembly.
3. (Trained service technician only) Replace the
system board assembly.
180-xxx-002 Failed diagnostics LED panel test. (Trained service technician only) Replace the system
board assembly.
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BladeCenter LS21 Type 7971 and LS41 Type 7972: Problem Determination and Service Guide