thinkpad r50e r51e r52, lenovo
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ThinkPad
Computer
Hardware
Maintenance
Manual
April 2008
This manual supports:
ThinkPad R50e Series
(MT 1834, 1842, 2670)
ThinkPad R51e Series
(MT 1843, 1844, 1845)
ThinkPad R52 Series
(MT 1846, 1847, 1848, 1849, 1850,
1858, 1859, 1860, 1861, 1862,
1863, 1870)
ThinkPad Dock II (MT 2877)
Note
Before
using
this
information
and
the
product
it
supports,
be
sure
to
read
the
general
information
under
on
page
263.
Second
Edition
(April 2008)
©
Copyright
Lenovo
2005, 2008.
Portions
©
Copyright
International
Business
Machines
Corporation
2005, 2008.
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
.
.
.
.
.
.
.
.
.
for
replacing
FRUs
.
.
.
.
.
.
.
.
.
for
replacing
a
hard
disk
drive
.
.
.
.
.
to
use
error
messages
.
.
.
.
.
.
.
.
for
replacing
FRUs
for
CTO,
CMV,
and
GAV
4
definition
.
.
.
.
.
.
.
.
.
.
.
identification
for
CTO,
CMV,
and
GAV
products
information
about
replacing
RoHS
compliant
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
compatibility
matrix
.
.
.
.
.
.
.
.
.
notices:
multilingual
translations
.
.
.
.
.
.
information
.
.
.
.
.
.
.
.
.
.
.
.
safety
.
.
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.
.
.
.
.
.
.
.
.
safety
.
.
.
.
.
.
.
.
.
.
.
inspection
guide
.
.
.
.
.
.
.
.
.
devices
that
are
sensitive
to
electrostatic
.
.
.
.
.
.
.
.
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.
.
.
requirements
.
.
.
.
.
.
.
.
.
compliance
statement
.
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.
.
.
descriptions
.
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.
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.
.
.
.
this
first
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.
.
to
do
first
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.
.
.
.
.
.
.
service
information
.
.
.
.
.
.
.
.
.
Web
site
.
.
.
.
.
.
.
.
.
.
.
the
pre-installed
system
.
.
.
.
.
.
.
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.
.
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.
.
.
.
.
.
.
management
.
.
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.
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.
.
.
.
guide
.
.
.
.
.
.
.
.
.
.
.
.
the
computer
.
.
.
.
.
.
.
.
.
.
system
information
with
PC-Doctor
.
.
.
system
checkout
.
.
.
.
.
.
.
.
.
R50e,
R51e
and
R52
Series
.
.
.
.
.
overview
.
.
.
.
.
.
.
.
.
.
.
.
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.
.
.
.
.
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.
.
indicators
.
.
.
.
.
.
.
.
.
.
.
tests
.
.
.
.
.
.
.
.
.
.
.
.
.
key
combinations
.
.
.
.
.
.
.
.
.
.
index
.
.
.
.
.
.
.
.
.
.
error
codes
.
.
.
.
.
.
.
.
.
.
messages
.
.
.
.
.
.
.
.
.
.
.
symptoms
.
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.
symptoms
.
.
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.
.
symptoms
.
.
.
.
.
.
.
.
.
problems
.
.
.
.
.
.
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.
.
.
problems
.
.
.
.
.
.
.
.
.
©
Lenovo
2005.
Portions
©
IBM
Corp.
2005.
iii
Introduction
replacement
notices
.
.
.
.
.
.
.
.
.
notices
.
.
.
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.
.
.
.
.
.
serial
numbers
.
.
.
.
.
.
.
.
.
and
replacing
a
FRU
.
.
.
.
.
.
.
.
Battery
pack
.
.
.
.
.
.
.
.
.
.
.
Ultrabay
Enhanced
device
(for
R52
series)
77
Hard
disk
drive
.
.
.
.
.
.
.
.
.
.
DIMM
(optional)
.
.
.
.
.
.
.
.
.
Keyboard
.
.
.
.
.
.
.
.
.
.
.
Ultrabay
device
(for
R50e
series)
.
.
.
.
DIMM
(standard)
.
.
.
.
.
.
.
.
.
Modem
daughter
card
(MDC-2)
.
.
.
.
.
Bluetooth/Modem
daughter
card
(BMDC-3)
R52
series)
.
.
.
.
.
.
.
.
.
.
Keyboard
bezel
.
.
.
.
.
.
.
.
.
.
Touch
pad
and
Fingerprint
reader
(for
R52
.
.
.
.
.
.
.
.
.
.
.
.
.
Mini
PCI
adapter
.
.
.
.
.
.
.
.
.
Fan
assembly
.
.
.
.
.
.
.
.
.
.
CPU
.
.
.
.
.
.
.
.
.
.
.
.
.
Backup
battery
.
.
.
.
.
.
.
.
.
Speaker
assembly
.
.
.
.
.
.
.
.
IEEE
1394
(for
R52
series)
.
.
.
.
.
.
PC
Card
slot
assembly
.
.
.
.
.
.
.
Ultrabay
Enhanced
shield
kit
.
.
.
.
.
LCD
assembly
.
.
.
.
.
.
.
.
.
.
VGA
and
Ultrabay
Enhanced
device
eject
cable
.
.
.
.
.
.
.
.
.
.
.
System
board,
interposer
card,
and
base
.
.
.
.
.
.
.
.
.
.
.
.
.
LCD
front
bezel
.
.
.
.
.
.
.
.
.
Inverter
card
.
.
.
.
.
.
.
.
.
.
LCD
panel,
LCD
cable
assembly,
wireless
antenna
assembly,
hinges,
and
LCD
cover
.
ThinkPad
Dock
II
PCI
cover
.
.
.
.
.
.
ThinkPad
Dock
II
top
cover
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
view
(for
R50e)
.
.
.
.
.
.
.
.
.
view
(for
R50e)
.
.
.
.
.
.
.
.
.
view
(for
R50e)
.
.
.
.
.
.
.
.
.
view
(for
R52)
.
.
.
.
.
.
.
.
.
.
view
(for
R52)
.
.
.
.
.
.
.
.
.
.
view
(for
R52)
.
.
.
.
.
.
.
.
.
list
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
FRUs
.
.
.
.
.
.
.
.
.
.
.
.
adapters
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
CDs
.
.
.
.
.
.
.
.
.
.
.
parts
.
.
.
.
.
.
.
.
.
.
FRUs
.
.
.
.
.
.
.
.
.
.
.
parts
list
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
iv
R50e,
R51e
and
R52
Series
.
.
.
.
.
.
.
.
.
.
.
.
.
Contents
v
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