IBM System x3500

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, System x3500 Type 7977,” on page 41 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 Action
151 Real-time clock error.
1. Reseat the battery.
2. Clear CMOS memory. See “System-board internal
connectors and switches” on page 8 for
information about how to clear CMOS memory.
3. Replace the following components, one at a time,
in the order shown, restarting the server each
time:
a. Battery
b. (Trained service technician only) System
board
161 Real-time clock battery error.
1. Reseat the battery.
2. Clear CMOS memory. See “System-board internal
connectors and switches” on page 8 for
information about how to clear CMOS memory.
3. Replace the following components, one at a time,
in the order shown, restarting the server each
time:
a. Battery
b. (Trained service technician only) System
board
162 A device configuration has changed
1. Run the Configuration/Setup Utility program,
select Load Default Settings, and save the
settings.
2. Clear CMOS memory. See “System-board internal
connectors and switches” on page 8 for
information about how to clear CMOS memory.
3. Reseat the following components:
a. Battery
b. Failing device
4. Replace the following components, one at a time,
in the order shown, restarting the server each
time:
a. Battery
b. Failing device
c. (Trained service technician only) System
board
Chapter 5. Diagnostics 103