Lenovo ThinkServer RS110 Type 6435 Hardware Maintenance Manual page 127

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, RS110 Types 6435, 6436, 6437 and 6438 server," on page 27 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.
Beep code
1-2-4
1-3-1
2-1-1
2-1-2
2-1-3
2-1-4
Description
RAM refresh verification failed.
First 64K RAM test failed.
Primary DMA register failed.
Secondary DMA register failed.
Primary interrupt mask register failed.
Secondary interrupt mask register failed.
Action
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
1. Reseat the DIMMs.
2. Replace the lowest-numbered pair of
DIMMs with an identical known good pair
of DIMMs; then, restart the server. If the
beep code error remains, go to 3b. Return
one DIMM at a time from the failed pair to
its connector, restarting the server after
each DIMM, to identify the failed DIMM.
3. Replace the following components, one at
a time, in the order shown, restarting the
server each time:
a. DIMMs
b. (Trained service technician only)
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.
(Trained service technician only) Replace the
system board.
Chapter 5. Diagnostics
109