IBM System x3550 Type 7978 Problem Determination And Service Manual page 38

Exception: If there are multiple error codes or light path diagnostics LEDs that
indicate a microprocessor error, the error might be in the microprocessor or in the
microprocessor socket. See "Microprocessor problems" on page 48 for information
about diagnosing microprocessor problems.
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
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
No beep
1-1-2
1-1-3
1-1-4
1-2-1
1-2-2
1-2-3
1-2-4
20
IBM System x3550 Type 7978 and 1913: Problem Determination and Service Guide
Description
System board failure.
Microprocessor register test failed.
CMOS write/read test failed.
BIOS EEPROM checksum failed.
Programmable interval timer failed.
DMA initialization failed.
DMA page register write/read failed.
RAM refresh verification failed.
Action
(Trained service technician only) Replace the
system board.
1. (Trained service technician only) Reseat
the microprocessors.
2. (Trained service technician only) Replace
the following components one at a time, in
the order shown, restarting the server each
time:
a. Microprocessor 2 (if present).
b. Microprocessor 1.
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
1. Reload the server BIOS (see "Recovering
the BIOS code" on page 76).
2. (Trained service technician only) Replace
the system board.
(Trained service technician only) Replace the
system board.
(Trained service technician only) Replace the
system board.
(Trained service technician only) Replace the
system board.
1. Reseat the DIMMs.
2. Replace the following components, one at
a time, in the order shown:
a. DIMMs
b. (Trained service technician only)
System board