thinkpad g40 g41, IBM-Lenovo
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ThinkPad
Computer
Hardware
Maintenance
Manual
July 2005
This manual supports: ThinkPad G40, G41
Note
Before
using
this
information
and
the
product
it
supports,
be
sure
to
read
the
general
information
under
on
page
156.
First
Edition
(July
2005)
©
Copyright
Lenovo
2005.
Portions
©
Copyright
International
Business
Machines
Corporation
2005.
All
rights
reserved.
U.S.
GOVERNMENT
USERS
–
RESTRICTED
RIGHTS:
Our
products
and/or
services
are
provided
with
RESTRICTED
RIGHTS.
Use,
duplication
or
disclosure
by
the
Government
is
subject
to
the
GSA
ADP
Schedule
contract
with
Lenovo
Group
Limited,
if
any,
or
the
standard
terms
of
this
commercial
license,
or
if
the
agency
is
unable
to
accept
this
Program
under
these
terms,
then
we
provide
this
Program
under
the
provisions
set
forth
in
Commercial
Computer
Software–Restricted
Rights
at
FAR
52.227-19,
when
applicable,
or
under
Rights
in
Data-General,
FAR
52.227.14
(Alternate
III).
Contents
About
this
manual
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.
service
information
.
.
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.
.
.
.
.
.
for
replacing
FRUs
.
.
.
.
.
.
.
.
to
use
error
messages
.
.
.
.
.
.
.
.
compatibility
matrix
.
.
.
.
.
.
.
.
.
notices:
multilingual
translations
.
.
.
.
.
.
information
.
.
.
.
.
.
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.
.
.
.
safety
.
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.
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.
.
.
.
.
safety
.
.
.
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.
.
inspection
guide
.
.
.
.
.
.
.
.
.
devices
that
are
sensitive
to
electrostatic
.
.
.
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.
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.
.
requirements
.
.
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.
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.
.
.
.
compliance
statement
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.
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.
.
.
descriptions
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.
.
.
.
this
first
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.
to
do
first
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.
.
.
service
information
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.
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.
.
.
.
.
.
Web
site
.
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.
.
.
.
.
.
the
preloaded
system
.
.
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.
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.
.
.
.
.
.
.
management
.
.
.
.
.
.
.
.
.
.
guide
.
.
.
.
.
.
.
.
.
.
.
.
the
computer
.
.
.
.
.
.
.
.
.
.
system
information
with
PC-Doctor
.
.
.
system
checkout
.
.
.
.
.
.
.
.
.
G40,
G41
.
.
.
.
.
.
.
.
.
.
.
overview
.
.
.
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.
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.
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.
.
indicators
.
.
.
.
.
.
.
.
.
.
.
tests
.
.
.
.
.
.
.
.
.
.
.
.
.
key
combinations
.
.
.
.
.
.
.
.
.
.
index
.
.
.
.
.
.
.
.
.
.
error
codes
.
.
.
.
.
.
.
.
.
.
messages
.
.
.
.
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.
.
.
.
.
.
symptoms
.
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.
symptoms
.
.
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.
symptoms
.
.
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.
.
problems
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.
.
problems
.
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.
.
.
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.
.
replacement
notices
.
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.
notices
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.
.
.
.
.
.
serial
numbers
.
.
.
.
.
.
.
.
.
and
replacing
a
FRU
.
.
.
.
.
.
.
.
Battery
pack
.
.
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.
.
.
.
.
Hard
disk
drive
.
.
.
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.
©
Lenovo
2005.
Portions
©
IBM
Corp.
2005.
iii
Introduction
DIMM
door
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DIMM
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.
Modem
daughter
card
(MDC)
.
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.
.
.
Backup
battery
.
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.
.
Keyboard
.
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.
Middle
cover
.
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.
.
Hinge
cover
.
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.
.
.
.
FDD
assembly
.
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.
.
.
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.
.
.
Blank
bezel
FDD
assembly
.
.
.
.
.
.
VGA
heatsink
assembly
.
.
.
.
.
.
.
VGA
card
assembly
.
.
.
.
.
.
.
.
CD-ROM/DVD
drive
and
ODD
bracket
.
.
.
Mini
PCI
adapter
.
.
.
.
.
.
.
.
.
PC
card
slot
assembly
.
.
.
.
.
.
.
.
LCD
and
Keyboard
bezel
assembly
.
.
.
.
LCD
assembly
.
.
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.
.
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.
.
.
Keyboard
bezel
.
.
.
.
.
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.
.
.
Fan
assembly
.
.
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.
.
.
.
.
.
.
Fan
(CPU
3
GHz)
and
CPU
fixture
.
.
.
.
CPU
.
.
.
.
.
.
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.
.
.
.
.
.
CD-ROM/DVD
drive
bracket
.
.
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.
.
FDD
bracket
.
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.
.
.
.
.
.
.
System
board
.
.
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.
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.
Lower
case
assembly
.
.
.
.
.
.
.
Modem
cable
.
.
.
.
.
.
.
.
.
.
PC
card
slot
assembly
.
.
.
.
.
.
.
LCD
front
bezel
.
.
.
.
.
.
.
.
.
Inverter
card
.
.
.
.
.
.
.
.
.
.
Speaker
assembly
.
.
.
.
.
.
.
.
LCD
cable
assembly
.
.
.
.
.
.
.
.
Wireless
antenna
and
rear
cover
.
.
.
.
LCD
panel
and
hinge
assembly
.
.
.
.
.
.
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.
.
view
.
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.
.
view
.
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.
.
view
.
.
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.
.
.
list
.
.
.
.
.
.
.
.
.
.
.
.
.
.
G41
series
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
FRUs
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
CDs
.
.
.
.
.
.
.
.
.
.
.
parts
.
.
.
.
.
.
.
.
.
.
adapters
.
.
.
.
.
.
.
.
.
.
.
.
cable
.
.
.
.
.
.
.
.
.
.
.
FRUs
.
.
.
.
.
.
.
.
.
.
.
parts
list
.
.
.
.
.
.
.
.
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.
.
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.
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.
.
.
.
.
.
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.
iv
ThinkPad
G40,
G41
About
this
manual
This
manual
contains
service
and
reference
information
for
ThinkPad
G40
and
G41
products.
Use
this
manual
along
with
the
advanced
diagnostic
tests
to
troubleshoot
problems.
The
manual
is
divided
into
sections
as
follows:
v
The
common
sections
provide
general
information,
guidelines,
and
safety
information
required
in
servicing
computers.
v
The
product-specific
section
includes
service,
reference,
and
product-specific
parts
information.
Important
This
manual
is
intended
for
trained
service
personnel
who
are
familiar
with
ThinkPad
products.
Use
this
manual
along
with
the
advanced
diagnostic
tests
to
troubleshoot
problems
effectively.
Before
servicing
ThinkPad
products,
be
sure
to
review
the
safety
information
under
notices:
translations”
on
page
4,
on
page
16,
and
compliance
on
page
21.
©
Lenovo
2005.
Portions
©
IBM
Corp.
2005.
1
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