IBM ThinkPad T40-41-42 SERVICE MANUAL(1).pdf

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IBM
Mobile
Systems
ThinkPad
Computer
Hardware
Maintenance
Manual
August 2004
This manual supports:
ThinkPad T40/T40p, T41/T41p, T42/T42p
(MT 2373/2374/ / )
2375 2376/2378/2379
ThinkPad Dock II (MT 2877)
Note
Before
using
this
information
and
the
product
it
supports,
be
sure
to
read
the
general
information
under
“Notices”
on
page
276.
First
Edition
(August
2004)
The
following
paragraph
does
not
apply
to
the
United
Kingdom
or
any
country
where
such
provisions
are
inconsistent
with
local
law:
INTERNATIONAL
BUSINESS
MACHINES
CORPORATION
PROVIDES
THIS
PUBLICATION
“AS
IS”
WITHOUT
ANY
WARRANTY
OF
ANY
KIND,
EITHER
EXPRESS
OR
IMPLIED,
INCLUDING,
BUT
NOT
LIMITED
TO,
THE
LIMITED
WARRANTIES
OF
MERCHANTABILITY
OR
FITNESS
FOR
A
PARTICULAR
PURPOSE.
Some
states
do
not
allow
disclaimer
or
express
or
implied
warranties
in
certain
transactions;
therefore,
this
statement
may
not
apply
to
you.
This
publication
could
include
technical
inaccuracies
or
typographical
errors.
Changes
are
periodically
made
to
the
information
herein;
these
changes
will
be
incorporated
in
new
editions
of
the
publication.
IBM
may
make
improvements
or
changes
to
the
products
or
the
programs
described
in
this
publication
at
any
time.
It
is
possible
that
this
publication
may
contain
references
to,
or
information
about,
IBM
products
(machines
and
programs),
programming,
or
services
that
are
not
announced
in
your
country.
Such
references
or
information
must
not
be
construed
to
mean
that
IBM
intends
to
announce
such
IBM
products,
programming,
or
services
in
your
country.
Requests
for
technical
information
about
IBM
products
should
be
made
to
your
IBM
authorized
dealer
or
your
IBM
marketing
representative.
©
Copyright
International
Business
Machines
Corporation
2004.
All
rights
reserved.
US
Government
Users
Restricted
Rights
–
Use,
duplication
or
disclosure
restricted
by
GSA
ADP
Schedule
Contract
with
IBM
Corp.
 
Contents
About
this
manual
.
.
.
.
.
.
.
.
.
.
. 1
Introduction
.
.
.
.
.
.
.
.
.
.
.
.
. 3
Important
service
information
.
.
.
.
.
.
.
.
. 3
Strategy
for
replacing
FRUs
.
.
.
.
.
.
.
. 3
How
to
use
error
messages
.
.
.
.
.
.
.
. 4
Diskette
compatibility
matrix
.
.
.
.
.
.
.
.
. 4
Safety
notices:
multilingual
translations
.
.
.
.
.
. 4
Safety
information
.
.
.
.
.
.
.
.
.
.
.
. 16
General
safety
.
.
.
.
.
.
.
.
.
.
.
. 16
Electrical
safety
.
.
.
.
.
.
.
.
.
.
. 17
Safety
inspection
guide
.
.
.
.
.
.
.
.
. 19
Handling
devices
that
are
sensitive
to
electrostatic
discharge
.
.
.
.
.
.
.
.
.
.
.
. 20
Grounding
requirements
.
.
.
.
.
.
.
.
. 21
Laser
compliance
statement
.
.
.
.
.
.
.
.
. 22
General
descriptions
.
.
.
.
.
.
.
.
.
. 25
Read
this
first
.
.
.
.
.
.
.
.
.
.
.
.
. 25
What
to
do
first
.
.
.
.
.
.
.
.
.
.
. 25
Related
service
information
.
.
.
.
.
.
.
.
. 27
Service
web
site
.
.
.
.
.
.
.
.
.
.
. 27
Restoring
the
pre-installed
system
.
.
.
.
.
. 27
Passwords
.
.
.
.
.
.
.
.
.
.
.
.
. 28
Power
management
.
.
.
.
.
.
.
.
.
. 32
Checkout
guide
.
.
.
.
.
.
.
.
.
.
.
. 35
Testing
the
computer
.
.
.
.
.
.
.
.
.
. 35
Detecting
system
information
with
PC-Doctor
.
.
. 38
Power
system
checkout
.
.
.
.
.
.
.
.
. 39
ThinkPad
T40/T40p,
T41/T41p,
T42/T42p
Series
43
Product
overview
.
.
.
.
.
.
.
.
.
.
.
. 46
Specifications
.
.
.
.
.
.
.
.
.
.
.
. 46
Status
indicators
.
.
.
.
.
.
.
.
.
.
. 51
FRU
tests
.
.
.
.
.
.
.
.
.
.
.
.
. 54
Fn
key
combinations
.
.
.
.
.
.
.
.
.
. 55
Symptom-to-FRU
index
.
.
.
.
.
.
.
.
.
. 59
Numeric
error
codes
.
.
.
.
.
.
.
.
.
. 59
Error
messages
.
.
.
.
.
.
.
.
.
.
. 64
Beep
symptoms
.
.
.
.
.
.
.
.
.
.
. 65
No-beep
symptoms
.
.
.
.
.
.
.
.
.
. 65
LCD-related
symptoms
.
.
.
.
.
.
.
.
. 66
Intermittent
problems
.
.
.
.
.
.
.
.
.
. 67
Undetermined
problems
.
.
.
.
.
.
.
.
. 67
FRU
replacement
notices
.
.
.
.
.
.
.
.
. 68
Screw
notices
.
.
.
.
.
.
.
.
.
.
.
. 68
Retaining
serial
numbers
.
.
.
.
.
.
.
.
. 69
Removing
and
replacing
a
FRU
.
.
.
.
.
.
.
. 72
1010
Battery
pack
for
14.1-in.
LCD
models
.
.
. 73
1020
Battery
pack
for
15.0-in.
LCD
models
.
.
. 75
iii
©
Copyright
IBM
Corp.
2004
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1030
Ultrabay
Slim
device
.
.
.
.
.
.
.
. 76
1040
Hard
disk
drive
.
.
.
.
.
.
.
.
.
. 77
1050
DIMM
(optional)
.
.
.
.
.
.
.
.
. 79
1060
Keyboard
.
.
.
.
.
.
.
.
.
.
. 81
1070
DIMM
(standard)
.
.
.
.
.
.
.
.
. 85
1080
Modem
daughter
card
(MDC/MDC-2)
.
.
. 86
1090
Bluetooth /Modem
daughter
card
(BMDC/BMDC-2)
.
.
.
.
.
.
.
.
.
. 88
1100
Palm
rest
or
Palm
rest
with
fingerprint
sensor
(for
14.1-in.
LCD
models)
.
.
.
.
.
.
.
. 90
1110
Keyboard
bezel
or
Keyboard
bezel
with
fingerprint
sensor
(for
15.0-in.
LCD
models)
.
. 93
1120
Mini
PCI
adapter
.
.
.
.
.
.
.
.
. 99
1130
Fan
assembly
.
.
.
.
.
.
.
.
.
. 103
1140
Backup
battery
for
14.1-in.
LCD
models
108
1150
Backup
battery
for
15.0-in.
LCD
models
110
1160
Speaker
assembly
.
.
.
.
.
.
.
. 112
1170
Keyboard
bezel
for
14.1-in.
LCD
models
114
1180
PC
Card
slot
assembly
for
14.1-in.
LCD
models
.
.
.
.
.
.
.
.
.
.
.
.
. 116
1190
PC
Card
slot
assembly
for
15.0-in.
LCD
models
.
.
.
.
.
.
.
.
.
.
.
.
. 118
1200
LCD
assembly
for
14.1-in.
LCD
models
120
1210
LCD
assembly
for
15.0-in.
LCD
models
125
1220
CPU
.
.
.
.
.
.
.
.
.
.
.
. 130
1230
Ultrabay
Slim
guide
rail
assembly
for
14.1-in.
LCD
models
.
.
.
.
.
.
.
.
.
.
. 131
1240
Ultrabay
Slim
guide
rail
assembly
for
15.0-in.
LCD
models
.
.
.
.
.
.
.
.
.
.
. 133
1250
VGA
and
Ultrabay
Slim
device
eject
button
cable
.
.
.
.
.
.
.
.
.
.
.
.
. 136
1260
System
board
and
base
cover
for
14.1-in.
LCD
models
.
.
.
.
.
.
.
.
.
.
. 138
1270
System
board,
interposer
card,
and
base
cover
for
15.0-in.
LCD
models
.
.
.
.
.
. 147
2010
LCD
front
bezel
for
14.1-in.
LCD
models
155
2020
LCD
front
bezel
for
15.0-in.
LCD
models
157
2030
Inverter
card
for
14.1-in.
LCD
models
.
.
. 159
2040
Inverter
card
for
15.0-in.
LCD
models
.
.
. 161
2050
Wireless
antenna
assemblies,
LCD
panel,
LCD
cable
assembly,
hinges,
and
LCD
cover
for
14.1-in.
LCD
models
.
.
.
.
.
.
.
.
. 162
2060
Wireless
antenna
assemblies,
LCD
panel,
LCD
cable
assembly,
hinges,
and
LCD
cover
for
15.0-in.
LCD
models
.
.
.
.
.
.
.
.
. 177
3010
ThinkPad
Dock
II
PCI
cover
.
.
.
.
.
. 184
3020
ThinkPad
Dock
II
top
cover
.
.
.
.
.
. 185
Locations
.
.
.
.
.
.
.
.
.
.
.
.
.
. 188
Front
view
.
.
.
.
.
.
.
.
.
.
.
. 188
Rear
view
.
.
.
.
.
.
.
.
.
.
.
.
. 190
Bottom
view
.
.
.
.
.
.
.
.
.
.
.
. 191
Parts
list
.
.
.
.
.
.
.
.
.
.
.
.
.
. 192
iv
T40/T40p,
T41/T41p,
T42/T42p
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
T40/T40p,
T41/T41p,
T42/T42p
series
model
matrix
.
.
.
.
.
.
.
.
.
.
.
.
. 192
Overall
.
.
.
.
.
.
.
.
.
.
.
.
. 218
14.1-in.
LCD
FRUs
.
.
.
.
.
.
.
.
.
. 247
15.0-in.
LCD
FRUs
.
.
.
.
.
.
.
.
.
. 257
Keyboard
.
.
.
.
.
.
.
.
.
.
.
.
. 262
Recovery
CDs
.
.
.
.
.
.
.
.
.
.
. 264
Miscellaneous
parts
.
.
.
.
.
.
.
.
.
. 269
AC
adapters
.
.
.
.
.
.
.
.
.
.
.
. 272
Optional
FRUs
.
.
.
.
.
.
.
.
.
.
. 273
Common
parts
list
.
.
.
.
.
.
.
.
.
. 274
Notices
.
.
.
.
.
.
.
.
.
.
.
.
.
. 276
Trademarks
.
.
.
.
.
.
.
.
.
.
.
. 276
v
Contents
 
 
 
 
 
 
 
 
 
 
 
 
 

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