Contents
Chapter
1.
About
this
manual
.
.
.
.
. 1
Important
Safety
Information
.
.
.
.
.
.
.
.
. 1
Important
information
about
replacing
RoHS
compliant
FRUs
.
.
.
.
.
.
.
.
.
.
.
.
. 2
Chapter
2.
Safety
information
.
.
.
.
. 3
General
safety
.
.
.
.
.
.
.
.
.
.
.
.
.
. 3
Electrical
safety
.
.
.
.
.
.
.
.
.
.
.
.
. 3
Voltage-selection
switch
.
.
.
.
.
.
.
.
.
.
. 5
Safety
inspection
guide
.
.
.
.
.
.
.
.
.
.
. 5
Handling
electrostatic
discharge-sensitive
devices
.
. 6
Grounding
requirements
.
.
.
.
.
.
.
.
.
. 7
Safety
notices
(multi-lingual
translations)
.
.
.
.
. 7
Chapter
3.
General
information
.
.
.
. 39
The
ThinkVantage
Productivity
Center
program
.
. 39
Additional
information
resources
.
.
.
.
.
.
. 39
Specifications
.
.
.
.
.
.
.
.
.
.
.
.
.
. 40
Machine
types:
9120,
9127,
9129,
9134,
9136,
9139,
9141,
9143,
9156,
9158,
9171,
and
9191.
.
.
.
. 40
Machine
types:
9126,
9128,
9130,
9135,
9137,
9140,
9142,
9144,
9157,
9159,
9169,
and
9189.
.
.
.
. 41
Chapter
4.
General
Checkout
.
.
.
.
. 43
Problem
determination
tips
.
.
.
.
.
.
.
.
. 43
Chapter
5.
Diagnostics
.
.
.
.
.
.
.
. 45
PC-Doctor
for
Windows
.
.
.
.
.
.
.
.
.
. 45
PC-Doctor
for
Windows
PE
.
.
.
.
.
.
.
.
. 45
Running
diagnostics
from
the
Rescue
and
Recovery
workspace
.
.
.
.
.
.
.
.
.
. 46
PC-Doctor
for
DOS
.
.
.
.
.
.
.
.
.
.
.
. 46
Creating
a
diagnostic
CD
image
.
.
.
.
.
. 46
Creating
diagnostic
diskettes
.
.
.
.
.
.
. 46
Running
diagnostics
from
the
CD
or
diskettes
.
. 47
Navigating
through
the
diagnostics
programs
.
. 47
Running
tests
.
.
.
.
.
.
.
.
.
.
.
.
. 47
Viewing
the
test
log
.
.
.
.
.
.
.
.
.
. 49
Chapter
6.
Using
the
Setup
Utility
.
.
. 51
Starting
the
Setup
Utility
program
.
.
.
.
.
.
. 51
Viewing
and
changing
settings
.
.
.
.
.
.
.
. 51
Using
passwords
.
.
.
.
.
.
.
.
.
.
.
. 51
Password
considerations
.
.
.
.
.
.
.
.
. 51
User
Password
.
.
.
.
.
.
.
.
.
.
.
. 52
Administrator
Password
.
.
.
.
.
.
.
.
. 52
Setting,
changing,
and
deleting
a
password
.
.
. 52
Selecting
a
startup
device
.
.
.
.
.
.
.
.
.
. 52
Selecting
a
temporary
startup
device
.
.
.
.
. 52
Selecting
or
changing
the
startup
device
sequence
53
Advanced
settings
.
.
.
.
.
.
.
.
.
.
.
. 53
Exiting
from
the
Setup
Utility
program
.
.
.
.
. 53
Chapter
7.
Symptom-to-FRU
Index
.
.
. 55
Hard
disk
drive
boot
error
.
.
.
.
.
.
.
.
. 55
Power
Supply
Problems
.
.
.
.
.
.
.
.
.
. 55
Diagnostic
error
codes
.
.
.
.
.
.
.
.
.
.
. 57
Beep
symptoms
.
.
.
.
.
.
.
.
.
.
.
.
. 78
POST
error
codes
.
.
.
.
.
.
.
.
.
.
.
. 79
Miscellaneous
error
messages
.
.
.
.
.
.
.
. 81
Undetermined
problems
.
.
.
.
.
.
.
.
.
. 82
Chapter
8.
Replacing
FRUs
(Machine
types:
9120,
9127,
9129,
9134,
9136,
9139,
9141,
9143,
9156,
9158,
9171,
and
9191.)
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 85
Rear
connectors
.
.
.
.
.
.
.
.
.
.
.
.
. 86
Removing
the
computer
cover
.
.
.
.
.
.
.
. 87
Locations
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 88
Locating
parts
on
the
system
board
.
.
.
.
.
. 89
Removing
and
reinstalling
the
front
bezel
.
.
.
. 89
Replacing
the
power
supply
.
.
.
.
.
.
.
.
. 90
Replacing
the
system
board
.
.
.
.
.
.
.
.
. 92
Replacing
the
microprocessor
.
.
.
.
.
.
.
. 96
Replacing
a
memory
module
.
.
.
.
.
.
.
. 99
Replacing
a
PCI
adapter
card
.
.
.
.
.
.
.
. 100
Replacing
the
hard
disk
drive
.
.
.
.
.
.
.
. 102
Replacing
the
optical
drive
.
.
.
.
.
.
.
.
. 105
Replacing
the
diskette
drive
.
.
.
.
.
.
.
. 106
Replacing
the
front
fan
assembly
.
.
.
.
.
.
. 107
Replacing
the
rear
fan
assembly
.
.
.
.
.
.
. 110
Replacing
the
front
audio/USB
assembly
.
.
.
. 111
Replacing
the
power
switch/LED
assembly
.
.
. 112
Replacing
the
CMOS
battery
.
.
.
.
.
.
.
. 113
Completing
the
FRU
replacement
.
.
.
.
.
.
. 114
Chapter
9.
Replacing
FRUs
(Machine
types:
9126,
9128,
9130,
9135,
9137,
9140,
9142,
9144,
9157,
9159,
9169,
and
9189.)
.
.
.
.
.
.
.
.
.
.
.
.
. 115
Rear
connectors
.
.
.
.
.
.
.
.
.
.
.
. 116
Removing
the
computer
cover
.
.
.
.
.
.
.
. 117
Locations
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 118
Locating
parts
on
the
system
board
.
.
.
.
.
. 119
Accessing
the
system
board
components
and
drives
119
Replacing
a
memory
module
.
.
.
.
.
.
.
. 121
Replacing
the
CMOS
battery
.
.
.
.
.
.
.
. 123
Replacing
the
power
supply
.
.
.
.
.
.
.
. 124
Replacing
the
system
board
.
.
.
.
.
.
.
. 126
Replacing
the
microprocessor
.
.
.
.
.
.
.
. 129
Replacing
the
hard
disk
drive
.
.
.
.
.
.
.
. 132
Replacing
the
optical
drive
.
.
.
.
.
.
.
.
. 134
Replacing
the
diskette
drive
.
.
.
.
.
.
.
. 135
Replacing
the
power
switch/LED
assembly
.
.
. 136
Replacing
the
front
panel
card
.
.
.
.
.
.
.
. 137
Replacing
the
system
fan
assembly
.
.
.
.
.
. 138
Replacing
a
PCI
adapter
card
.
.
.
.
.
.
.
. 139
Completing
the
FRU
replacement
.
.
.
.
.
. 140
©
Lenovo
2005,
2009.
Portions
©
IBM
Corp.
2005.
iii
Summary of Contents for ThinkCentre A61
Page 1: ......
Page 2: ......
Page 3: ...ThinkCentre Hardware Maintenance Manual ...
Page 17: ...Chapter 2 Safety information 11 ...
Page 18: ...12 Hardware Maintenance Manual ...
Page 19: ... 18 kg 37 lbs 32 kg 70 5 lbs 55 kg 121 2 lbs 1 2 Chapter 2 Safety information 13 ...
Page 23: ...Chapter 2 Safety information 17 ...
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Page 25: ...Chapter 2 Safety information 19 ...
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Page 33: ...Chapter 2 Safety information 27 ...
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Page 35: ...1 2 Chapter 2 Safety information 29 ...
Page 39: ...Chapter 2 Safety information 33 ...
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Page 408: ...Part Number 43C4864 Printed in USA 1P P N 43C4864 ...