Note: See “System replaceable units” on page 144 to determine which components should be replaced by a fieldservice technician.Error code/symptom FRU/action166-407-001 System Management: Failed(BMC indicates failure in I2C bus test.) 1. Disconnect all server and option power cords from the server,wait 30 seconds, reconnect, and retry.2. Reflash or update firmware for BMC.3. Operator information panel cable.4. Operator information panel.5. System board.166-NNN-001 System Management:Failed (BMC indicates failure in self testwhere NNN=300 to 320.)1. Disconnect all server and option power cords from the server,wait 30 seconds, reconnect, and retry.2. Reflash or update firmware for BMC.3. System board.166-NNN-001 System Management:Failed (BMC indicates failure in I2C bustest where NNN=400 to 420 (excluding 412,414, and 415).)1. Disconnect all server and option power cords from the server,wait 30 seconds, reconnect, and retry.2. Reflash or update firmware for BMC.3. System board.180-197-000 (SCSI ASPI driver notinstalled) 1. Remove RAID adapter, if installed, and rerun test.2. System board.180-361-003(Failed fan LED test) 1. Fan2. System board180-XXX-000 (Diagnostics LED failure) v Run diagnostics panel LED test for the failing LED.180-XXX-001(Failed front LED panel test) 1. Operator information card2. System board180-XXX-002(Failed diagnostics LED panel test) 1. Operator information card2. System board180-XXX-003(Failed system board LED test) v System board180-XXX-005(Failed SCSI backplane LED test) 1. SCSI backplane2. SCSI backplane cable3. System board201-XXX-0nn(Failed memory test)Note: nn = slot number of failing DIMM;see “System-board internal connectors” onpage 78.1. DIMM nn2. System board201-XXX-n99(Multiple DIMM failure, see error text)Note: n = slot number of failing DIMM pair;see Table 2 on page 33.1. Reseat the DIMMs; then, restart the server.2. Remove the lowest-numbered DIMM pair of those that are identifiedand replace it with an identical pair of known good DIMMs; then,restart the server. Repeat as necessary. If the failures continue afterall identified pairs are replaced, go to step 4.3. Return the removed DIMMs, one pair at a time, to their originalconnectors, restarting the server after each pair, until a pair fails.Replace each DIMM in the failed pair with an identical known goodDIMM, restarting the server after each DIMM. Replace the failedDIMM. Repeat step 3 until you have tested all removed DIMMs.4. (Trained service technician only) Replace the system board.120 xSeries 236 Type 8841: Hardware Maintenance Manual and Troubleshooting Guide
