IBM 7940 Problem Determination And Service Manual page 97

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 7940 and 7941 servers," on page 19 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.
Error code Description
199 Processor power rating unsupported.
201 Memory test error.
289 DIMM disabled by user or system.
301 Keyboard or keyboard controller error.
303 Keyboard controller error.
11xx System board serial port error.
Action
1. Make sure that the microprocessor that was just
installed has a supported power rating. If the
power rating is not supported, replace the system
board with one that has a supported power rating.
2. Update BIOS code.
3. (Trained service technician only) Replace the
system board.
1. Update BIOS code and rerun diagnostics.
2. Reseat the DIMMs.
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
1. If the DIMM was disabled by the user, run the
Configuration/Setup Utility program and enable
the DIMM.
2. Reseat the disabled DIMM.
3. Replace the following components one at a time,
in the order shown, restarting the server each
time:
a. Disabled DIMM
b. (Trained service technician only) System
board
1. If you have installed a USB keyboard, run the
Configuration/Setup Utility program and enable
keyboardless operation to prevent the POST error
message 301 from being displayed during startup.
2. Reseat the keyboard.
3. Replace the following components one at a time,
in the order shown, restarting the server each
time:
a. Keyboard
b. (Trained service technician only) System
board
(Trained service technician only) Replace the system
board.
1. Reseat the external cable on the serial port.
2. Run the Configuration/Setup Utility program.
3. (Trained service technician only) Replace the
system board.
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Chapter 5. Diagnostics