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Symptom/Error FRU/Action in Sequence
No beep, power-on
indicator turns on and
LCD is blank. But
you can see POST
on an external CRT.
Reconnect the LCD connec-
tors.
LCD inverter ID
LCD LVDS board (for
14.1–inch LCD)
LCD FPC cable
LCD inverter
LCD
System board
No beep, power-on
indicator turns on and
a blinking cursor
shown on LCD during
POST.
Ensure every connector is
connected tightly and cor-
rectly.
System board
No beep during
POST but system
runs correctly.
Adjust the audio volume
control.
Speaker connector
System board
Note: The buzzer is on the
system board.
Keyboard/TrackPoint-Related
Symptoms
Symptom/Error FRU/Action in Sequence
Keyboard (one or
more keys) doesn't
work.
Go to “Keyboard and External
Input Device Check” on
page 114.
Reconnect keyboard cables.
Keyboard
System board
TrackPoint does not
work.
Go to “TrackPoint IV Check”
on page 115.
Reconnect keyboard cables.
TrackPoint board
Keyboard
System board
LCD-Related Symptoms
ThinkPad i Series 1400 (Part II) 125