IBM System x3550 Type 7978 Problem Determination And Service Manual page 87

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 7978 and 1913 server," on page 89 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
166-201-001 System Management: Failed (I2C bus
error(s). See SERVPROC and DIAGS
entries in the event log.)
166-201-002 System Management: Failed (I2C bus
error(s) See SERVPROC and DIAGS
entries in event log.)
166-201-003 System Management: Failed (I2C bus
error(s) See SERVPROC and DIAGS
entries in event log.)
166-201-004 System Management: Failed
(I2C bus error(s) See SERVPROC and
DIAGS entries in event log.)
Action
Reseat the following components, one at a time, in
the order shown, restarting the server each time:
1. Remote Supervisor II SlimLine (if installed).
2. DIMMs.
Replace the following components, one at a time, in
the order shown, restarting the server each time:
1. Remote Supervisor II SlimLine (if installed).
2. DIMMs.
3. (Trained service technician only) System board.
Reseat the following components, one at a time, in
the order shown, restarting the server each time:
1. I2C cable between the operator information panel
and the system board ("System-board internal
connectors" on page 10).
2. Operator information panel.
Replace the following components, one at a time, in
the order shown, restarting the server each time:
1. I2C cable between the operator information panel
and the system board ("System-board internal
connectors" on page 10).
2. Operator information panel.
3. (Trained service technician only) System board.
Reseat the following components, one at a time, in
the order shown, restarting the server each time:
1. Power backplane.
2. Power supply.
Replace the following components, one at a time, in
the order shown, restarting the server each time:
1. Power backplane.
2. Power supply.
3. (Trained service technician only) System board.
Reseat the SAS backplane. Replace the following
components, one at a time, in the order shown,
restarting the server each time:
1. SAS backplane.
2. (Trained service technician only) System board.
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Chapter 2. Diagnostics