Ibm 6643 User Manual download pdf (Page 26)

2.

Replace

system

board.

If

you

are

unable

to

correct

the

problem,

go

to

“Undetermined

problems”

on

page

56.

Computer

exploded

view

(Types

2179

and

6643)

I/O

connectors

and

removal

procedures

are

described

on

the

following

pages.

Note:

The

number

of

defective

pixels

to

qualify

a

TFT

LCD

panel

to

be

replaced

under

warranty

is

8

or

more

for

all

types

2179

and

6643

computers.

18

Hardware

Maintenance

Manual

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