IBM HS12 - BladeCenter - 8028 Service Manual page 83

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 4, "Parts listing, Types 8014, 8028 and 1916," on page 25 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
1-2-4
1-3-1
Description
RAM refresh verification failed.
First 64K RAM test failed.
Action
1. Reseat the DIMMs and the expansion unit
if one is installed.
v To reseat a DIMM, see "Removing a
memory module" on page 44 and
"Installing a memory module" on page
46.
v To reseat an optional expansion unit, see
"Removing an optional expansion unit"
on page 37 and "Installing an optional
expansion unit" on page 38.
2. Replace the following components one at a
time, in the order shown, restarting the
blade server each time:
a. DIMMs - See "Removing a memory
module" on page 44 and "Installing a
memory module" on page 46.
b. (Trained service technician only)
System-board assembly - See "Removing
the system-board assembly" on page 65
and "Installing the system-board
assembly" on page 66.
c. Optional expansion unit (if one is
installed) - See "Removing an optional
expansion unit" on page 37 and
"Installing an optional expansion unit"
on page 38.
1. Reseat the DIMMs. See "Removing a
memory module" on page 44 and
"Installing a memory module" on page 46.
2. Replace the lowest-numbered pair of
DIMMs with an identical known good pair
of DIMMs; then, restart the blade server. If
the beep code remains, go to "Beep code
descriptions" on page 69. Return one
DIMM at a time from the failed pair to its
connector, restarting the blade server after
each DIMM, to identify the failed DIMM.
3. Replace the following components one at a
time, in the order shown, restarting the
blade server each time:
a. DIMMs - See "Removing a memory
module" on page 44 and "Installing a
memory module" on page 46.
b. (Trained service technician only)
System-board assembly - See "Removing
the system-board assembly" on page 65
and"Installing the system-board
assembly" on page 66.
Chapter 6. Diagnostics
71