IBM System x3950, Problem Determination And Service Manual

Page: 31 / 190

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 8878 and 8879,” on page 109 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 Description Action
1-3-1 1st 64K RAM test failed.
1. Reseat the following components:
a. DIMM
b. Memory card
2. Replace the components listed in step 1
one at a time, in the order shown, restarting
the server each time.
2-1-1 Secondary DMA register failed.
1. Reseat the I/O board.
2. Replace the I/O board.
2-1-2 Primary DMA register failed.
1. Reseat the I/O board.
2. Replace the I/O board.
2-1-3 Primary interrupt mask register failed.
1. Reseat the I/O board.
2. Replace the I/O board.
2-1-4 Secondary interrupt mask register failed.
1. Reseat the I/O board.
2. Replace the I/O board.
2-2-2 Keyboard controller failed.
1. Reseat the I/O board.
2. Replace the I/O board.
3-1-1 Timer tick interrupt failed.
1. Reseat the I/O board.
2. Replace the I/O board.
3-1-2 Interval timer channel 2 failed.
1. Reseat the I/O board.
2. Replace the I/O board.
3-1-4 Time-of-day clock failed.
1. Reseat the following components:
a. Battery
b. I/O board
2. Replace the components listed in step 1
one at a time, in the order shown, restarting
the server each time.
Chapter 2. Diagnostics
15