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Symptom-to-FRU error messages
Infrared-related symptoms
Symptom or error FRU or action, in
sequence
Unable to communicate
using the Infrared (IR) Port.
1. Make sure the setup
for the IR is correct.
Use the ThinkPad
Configurations utility.
2. Make sure there are
no fluorescent lights
near the computer.
The computer may
receive optical noise
from the fluorescent
light.
3. Run the advanced
diagnostic test. If an
error occurs and a
FRU code is displayed,
replace the parts
shown by the FRU
code.
Keyboard- or TrackPoint-related
symptoms
Symptom or error FRU or action, in
sequence
The keyboard (one or more
keys) does not work.
1. Reseat the keyboard
cable on the sub
card.
2. Keyboard.
3. System board.
The TrackPoint does not
work.
1. Reseat the keyboard
cable on the system
board.
2. Go to “Testing the
computer” on page 7.
3. Keyboard.
4. System board.
The pointer moves
automatically or does not
work correctly.
See “Testing the
computer” on page 7.
28 ThinkPad 600X Hardware Maintenance Manual