LCD

FRU Replacement

Notice

 

 

 

 

 

 

 

 

 

 

 

 

 

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

the time) is characteristic of TFT LCD technology,

excessive

pixel

problems can

cause

viewing concerns

The LCD should be replaced if the number of miss

discolored,

or

lighted dots

in

any

background

is:

ŸSVGA (12.1"): 5 or more bright dots, 5 or more

dark dots, or a total of 9 or more bright an dots

ŸXGA (14.1"): 8 or more bright dots, 8 or more

dark

dots,

or

a

total

of 9

or

more bright an

dots

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Symptom/Error

 

FRU/Action in

Sequence

 

 

 

 

 

 

 

 

No beep, power-on

Ÿ

Power source (battery and

indicator

turns on

and

adapter).

See

“Power

LCD is blank.

 

 

Systems

Check”

on

 

 

 

 

 

 

page

111.

 

 

 

 

 

Ÿ

 

Reconnect

the

LCD

connector

 

 

Ÿ

 

DC/DC charger

 

 

 

 

 

Ÿ

 

Hard

disk

drive

 

 

Ÿ LCD inverter ID

ŸLCD LVDS board (for 14.1–inch LCD)

Ÿ LCD FPC cable

ŸInverter

ŸLCD

ŸSystem board

LCD

backlight doesn't Ÿ

Enter BIOS

Utility

and

 

work.

 

 

 

execute

"Load

Setup

Default

LCD

is

too

dark.

 

Settings";

then

reboot

the

 

system.

 

 

 

 

 

LCD

brightness

 

 

 

 

 

 

 

 

 

 

 

 

 

 

cannot

be

adjusted. Ÿ

Reconnect the LCD connec-

LCD

contrast

cannot

 

tors

 

 

 

 

 

 

Ÿ

Keyboard

(if

contrast

and

be

adjusted.

 

brightness

 

function keys do

 

 

 

 

 

 

 

 

 

 

 

not

work)

 

 

 

 

 

 

 

 

 

Ÿ

LCD

inverter

ID

 

 

 

ŸLCD LVDS board (for 14.1–inch LCD)

Ÿ LCD FPC cable

ŸLCD inverter

ŸLCD

ŸSystem board

126 ThinkPad i Series 1400 HMM

Page 134
Image 134
IBM 1400 (2611) manual Lcd