IBM ThinkPad T41 series User Manual

LCD-related symptoms
Important
The TFT LCD for the notebook computer contains
many thin-film transistors (TFTs). The presence of 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
62 MT 2373/2374/2375/2376/2378/2379

IBM ThinkPad T41 series Specifications

General

Operating System	Windows XP Professional
Weight	2.2 kg (4.9 lbs)
Chipset	Intel 855PM
Processor	Intel Pentium M
Display	14.1 inch
RAM	256 MB to 2 GB
Storage	30 GB to 80 GB HDD
Dimensions	311 x 255 x 26-30 mm
Display Resolution	1024x768 (XGA) or 1400x1050 (SXGA+)
Optical Drive	DVD-ROM, CD-RW/DVD-ROM Combo
Wireless	802.11b or 802.11g
Ethernet	10/100 Mbps
Battery	6-cell Li-Ion
Networking	Modem and Ethernet
Ports	2 USB 2.0, VGA, parallel, serial, infrared
Graphics	ATI Mobility Radeon 7500
Hard Drive Interface	Ultra ATA/100