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Symptom / Error FRU / 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 / Error FRU / Action in Sequence
The keyboard (one or more
keys) does not work.
1. Reseat the keyboard
cable on the DC/DC
card.
2. Keyboard
3. System board
The TrackPoint does not
work.
1. Reseat the keyboard
cable on the DC/DC
card.
2. Go to “TrackPoint
Checkout” on page 16.
3. Keyboard
4. System board
The pointer moves
automatically or does not
work correctly.
See “TrackPoint
Checkout” on page 16.
LCD-Related Symptoms
Important
The TFT LCD for the notebook computer contains
over 2,359,296 thin-film transistors (TFTs). A small
number of missing, discolored, or lighted dots (on all
the time) is characteristic of TFT LCD technology, but
excessive pixel problems can cause viewing concerns.
The LCD should be replaced if the number of missing,
discolored, or lighted dots in any background is 21 or
more.
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