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
SVGA: 5 or more bright dots, 5 or more dark
dots, or a total of 9 or more bright and dark dots.
Bright dots means pixel is always on (white or
color.) Dark dots means 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 all 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.
Note: The LCD assembly
refers to the internal LCD glass
panel assembly and not the
complete LCD and back panel.
Symptom-to-FRU index
46
ThinkPad TransNote
Summary of Contents for TransNote
Page 36: ...Checkout guide 32 ThinkPad TransNote...
Page 61: ...Removing and replacing a FRU ThinkPad TransNote 57...
Page 62: ...1020 DIMM continued v Battery pack 1010 Removing and replacing a FRU 58 ThinkPad TransNote...
Page 64: ...Removing and replacing a FRU 60 ThinkPad TransNote...
Page 67: ...Removing and replacing a FRU ThinkPad TransNote 63...
Page 74: ...continued Removing and replacing a FRU 70 ThinkPad TransNote...
Page 84: ...continued Removing and replacing a FRU 80 ThinkPad TransNote...
Page 85: ...Removing and replacing a FRU ThinkPad TransNote 81...
Page 95: ...Removing and replacing a FRU ThinkPad TransNote 91...
Page 99: ...continued Removing and replacing a FRU ThinkPad TransNote 95...
Page 105: ...Removing and replacing a FRU ThinkPad TransNote 101...
Page 108: ...Removing and replacing a FRU 104 ThinkPad TransNote...
Page 113: ...continued Removing and replacing a FRU ThinkPad TransNote 109...
Page 114: ...continued Removing and replacing a FRU 110 ThinkPad TransNote...
Page 117: ...continued Removing and replacing a FRU ThinkPad TransNote 113...
Page 121: ...continued Removing and replacing a FRU ThinkPad TransNote 117...
Page 126: ...5 Tighten the screws 7 and 8 Removing and replacing a FRU 122 ThinkPad TransNote...
Page 149: ...Notices ThinkPad TransNote 145...
Page 150: ...Part Number 22P2932 Printed in U S A 1P P N 22P2932...