IBM x3550 Problem Determination And Service Manual page 121

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 29 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.
Beep code
3-1-4
3-2-1
3-2-4
3-3-1
Description
Time-of-day clock failed.
Serial port failed.
Failed comparing CMOS memory size
against actual.
Memory size mismatch occurred.
Action
1. Reseat the system-board battery.
2. Replace the following components one at
a time, in the order shown, restarting the
server each time:
a. System-board battery
b. (Trained service technician only)
System board
(Trained service technician only) Replace the
system board.
1. Reseat the following components:
a. DIMMs
b. System-board battery
2. Replace the following components, one at
a time, in the order shown, restarting the
server each time:
a. DIMMs
b. System-board battery
c. (Trained service technician only)
System board
1. Reseat the following components:
a. DIMMs
b. System-board battery
2. Replace the following components, one at
a time, in the order shown, restarting the
server each time:
a. DIMMs
b. System-board battery
c. (Trained service technician only)
System board
Chapter 5. Diagnostics
103