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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, Type 7981," on page 53 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.
Error code
Description
166-406-001
BMC indicates failure in I2C bus test.
166-407-001
System Management: Failed. BMC indicates
failure in I2C bus test.
166-nnn-001
System Management: Failed. BMC indicates
failure in self test.
Note: nnn = 300 to 320.
166-nnn-001
System Management: Failed. BMC indicates
failure in self test.
Note: nnn = 400 to 420, excluding 406 and
407.
180-xxx-000
Diagnostics LED failure.
180-xxx-001
Failed front LED panel test.
180-xxx-002
Failed diagnostics LED panel test.
180-xxx-003
Failed system board LED test.
46
BladeCenter HS20 Type 7981: Problem Determination and Service Guide
Action
1. Remove the blade server from the BladeCenter
unit, wait 30 seconds, reseat it in the BladeCenter
unit, and run the test again.
2. Update the BMC firmware (see "Firmware
updates" on page 79).
3. (Trained service technician only) Replace the
system board assembly.
1. Remove the blade server from the BladeCenter
unit, wait 30 seconds, reseat it in the BladeCenter
unit, and run the test again.
2. Update the BMC firmware (see "Firmware
updates" on page 79).
3. (Trained service technician only) Replace the
system board assembly.
1. Remove the blade server from the BladeCenter
unit, wait 30 seconds, reseat it in the BladeCenter
unit, and run the test again.
2. Update the BMC firmware (see "Firmware
updates" on page 79).
3. (Trained service technician only) Replace the
system board assembly.
1. Remove the blade server from the BladeCenter
unit, wait 30 seconds, reseat it in the BladeCenter
unit, and run the test again.
2. Update the BMC firmware (see "Firmware
updates" on page 79).
3. (Trained service technician only) Replace the
system board assembly.
Run the LED test in the diagnostics program.
1. Reseat the control-panel connector.
2. Replace the bezel assembly.
3. (Trained service technician only) Replace the
system board assembly.
(Trained service technician only) Replace the system
board assembly.
(Trained service technician only) Replace the system
board assembly.
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