LCD-related symptoms
Important
The TFT LCD for the notebook computer contains
many thin-film transistors (TFTs). A small number of
dots that are missing, discolored, or always lighted
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:
v
XGA: 8 or more bright dots, 8 or more dark dots,
or a total of 9 or more bright and dark dots.
v
SXGA+: 11 or more bright dots, 13 or more dark
dots, or a total of 16 or more bright and dark
dots.
Note: A bright dot means a pixel is always on
(white or color.) A dark dot means a pixel is
always off (black color.)
Symptom or error
FRU or action, in sequence
No beep, power-on indicator
on, and a blank LCD during
POST.
System board.
v
LCD backlight not working.
v
LCD too dark.
v
LCD brightness cannot be
adjusted.
v
LCD contrast cannot be
adjusted.
1. Reseat the LCD
connectors.
2. LCD assembly.
3. System board.
v
LCD screen unreadable.
v
Characters missing pixels.
v
Screen abnormal.
v
Wrong color displayed.
1. See important note for
“LCD-related symptoms.”
2. Reseat all LCD connectors.
3. LCD assembly.
4. System board.
Horizontal or vertical lines
displayed on LCD.
LCD assembly.
Symptom-to-FRU index
ThinkPad T30
55
Summary of Contents for MT 2367
Page 6: ...2 ThinkPad T30 MT 2366 2367...
Page 28: ...Laser compliance statement 24 ThinkPad T30 MT 2366 2367...
Page 102: ...6 6 Removing and replacing a FRU 98 ThinkPad T30 MT 2366 2367...
Page 125: ...2 2 3 Removing and replacing a FRU ThinkPad T30 121...
Page 137: ...1 2 3 4 5 6 7 8 9 10 11 12 13 14 16 15 17 18 Locations ThinkPad T30 133...
Page 167: ...Notices ThinkPad T30 163...
Page 168: ...Part Number 92P1840 Printed in U S A 1P P N 92P1840...
