IBM BladeCenter HS20 7981 Problem Determination And Service Manual page 37

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 7981," on page 53 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
201 Memory test error.
229 Cache error.
301 Keyboard or keyboard controller error.
303 Keyboard controller error.
602 Invalid diskette boot record.
Action
1. Update the BIOS code and run the diagnostics
again.
2. Reseat the DIMMs.
3. Replace the following components one at a time,
in the order shown, restarting the blade server
each time:
a. DIMMs
b. (Trained service technician only) System
board assembly
1. Reseat the following components:
a. (Trained service technician only)
Microprocessor 1
b. (Trained service technician only)
Microprocessor 2
2. Replace the components listed in step 1 one at a
time, in the order shown, restarting the blade
server each time:
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 blade server
each time:
a. Keyboard
b. (Trained service technician only) System
board assembly
(Trained service technician only) Replace the system
board assembly.
1. Remove and reinsert the diskette, and restart the
blade server; or restart the blade server by using
another bootable diskette.
2. Reseat the following components:
a. Diskette drive
b. Diskette drive cable
3. Replace the following components one at a time,
in the order shown, restarting the blade server
each time:
a. Diskette drive
b. Diskette drive cable
c. (Trained service technician only) System
board assembly
21
Chapter 2. Diagnostics