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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 7942 server," on page 37 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
5 beeps
6 beeps
10 beeps
3 short beeps, repeated
endlessly
Description
Processor error.
Keyboard controller failed.
Controller 8042 Gate A20 test failed.
ROM checksum error.
No valid memory modules were found.
Action
1. Reseat the following components, one at a
time, in the order shown, restarting the
server each time:
v (Trained service technician only)
Microprocessor 2 (if installed)
v (Trained service technician only)
Microprocessor 1
2. Replace the following components, one at
a time, in the order shown, restarting the
server each time:
v (Trained service technician only)
Microprocessor 2 (if installed)
v (Trained service technician only)
Microprocessor 1
v (Trained service technician only) System
board
1. Reseat the PS/2 keyboard cable.
2. Replace the following components, one at
a time, in the order shown, restarting the
server each time:
a. PS/2 keyboard
b. (Trained service technician only)
System board
1. Recover the BIOS code (see "Recovering
the BIOS code" on page 107).
2. (Trained service technician only) Replace
the system board.
1. Make sure that the memory modules in the
server are supported and are installed in
the arrangement indicated in "Installing a
memory module" on page 52. Go to
http://www.ibm.com/systems/support/ for a
list of supported memory modules.
2. Reseat the memory modules.
3. Replace the memory modules.
4. (Trained service technician only) Replace
the system board.
Chapter 5. Diagnostics
85
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