Lenovo ThinkCentre A50 Hardware Maintenance Manual - Page 5

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Contents Chapter 1. About this manual . . . . . 1 Important Safety Information 1 Strategy for replacing FRUs for CTO, CMV, and GAV products 2 Product definition 2 FRU Identification for CTO, CMV, and GAV products 2 Important information about replacing RoHS compliant FRUs 3 Chapter 2. Safety information . . . . . 5 General safety 5 Electrical safety 5 Safety inspection guide 7 Handling electrostatic discharge-sensitive devices . . 8 Grounding requirements 8 Safety notices (multi-lingual translations) . . . . . 9 Chapter 3. General information . . . . 41 The Access IBM program 41 Additional information resources 41 Specifications 42 Chapter 4. General Checkout . . . . . 43 Problem determination tips 44 Chapter 5. Diagnostics using PC-Doctor for DOS 47 Starting PC-Doctor from the Rescue and Recovery workspace 47 Starting PC-Doctor from a diagnostic diskette or CD-ROM 48 Diagnostics program download 48 Navigating through the diagnostics programs . . . 48 Running diagnostics tests 48 Test selection 49 Test results 49 Fixed disk advanced test (FDAT 49 Quick and Full erase - hard drive 51 Viewing the test log 52 Chapter 6. Using the Setup Utility . . . 53 Starting the Setup Utility program 53 Viewing and changing settings 53 Exiting from the Setup Utility program . . . . . 53 Using passwords 53 Password considerations 54 User Password 54 Administrator Password 54 IDE Drive User Password 54 IDE Drive Master Password 54 Setting, changing, and deleting a password . . . 55 Using Security Profile by Device 55 Selecting a startup device 56 © Lenovo 2005, 2008. Portions © IBM Corp. 2005. Selecting a temporary startup device . . . . . 56 Changing the startup device sequence . . . . 56 Advanced settings 56 Chapter 7. Symptom-to-FRU Index . . . 57 Hard disk drive boot error 57 Power Supply Errors 57 Diagnostic error codes 59 Beep symptoms 80 No-beep symptoms 82 POST error codes 83 Miscellaneous error messages 86 Undetermined problems 88 Chapter 8. Replacing FRUs 89 Locating connectors on the front 89 Locating the connectors on the rear 90 Opening the cover 90 Locating components 91 Identifying parts on the system board . . . . . 92 Removing and replacing a memory module . . . 92 Removing and replacing a PCI adapter . . . . . 93 Removing and replacing the battery 94 Removing and replacing the power supply . . . . 96 Removing and replacing the system board . . . . 97 Removing and replacing the microprocessor . . . 100 Removing and replacing an optical drive . . . . 102 Removing and replacing a hard disk drive . . . 103 Completing the FRU replacement 104 Chapter 9. FRU lists 105 Machine Type 8086 105 Machine Type 8087 115 Machine Type 8088 122 Machine Type 8089 129 Machine Type 8090 135 Machine Type 8094 142 Chapter 10. Additional Service Information 149 Security features 149 Hardware controlled Passwords 149 Operating system password 149 Vital product data 149 Management Information Format (MIF) . . . 149 BIOS levels 150 Flash update procedures 150 Updating (flashing) BIOS from a diskette or CD-ROM 150 Updating (flashing) BIOS from your operating system 150 Recovering from a POST/BIOS update failure 151 Power management 152 iii

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Contents
Chapter
1.
About
this
manual
.
.
.
.
.1
Important
Safety
Information
.
.
.
.
.
.
.
.
.1
Strategy
for
replacing
FRUs
for
CTO,
CMV,
and
GAV
products
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.2
Product
definition
.
.
.
.
.
.
.
.
.
.
.2
FRU
Identification
for
CTO,
CMV,
and
GAV
products
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.2
Important
information
about
replacing
RoHS
compliant
FRUs
.
.
.
.
.
.
.
.
.
.
.
.
.3
Chapter
2.
Safety
information
.
.
.
.
.5
General
safety
.
.
.
.
.
.
.
.
.
.
.
.
.
.5
Electrical
safety
.
.
.
.
.
.
.
.
.
.
.
.
.5
Safety
inspection
guide
.
.
.
.
.
.
.
.
.
.
.7
Handling
electrostatic
discharge-sensitive
devices
.
.8
Grounding
requirements
.
.
.
.
.
.
.
.
.
.8
Safety
notices
(multi-lingual
translations)
.
.
.
.
.9
Chapter
3.
General
information
.
.
.
. 41
The
Access
IBM
program
.
.
.
.
.
.
.
.
.
. 41
Additional
information
resources
.
.
.
.
.
.
. 41
Specifications
.
.
.
.
.
.
.
.
.
.
.
.
.
. 42
Chapter
4.
General
Checkout
.
.
.
.
. 43
Problem
determination
tips
.
.
.
.
.
.
.
.
. 44
Chapter
5.
Diagnostics
using
PC-Doctor
for
DOS
.
.
.
.
.
.
.
.
. 47
Starting
PC-Doctor
from
the
Rescue
and
Recovery
workspace
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 47
Starting
PC-Doctor
from
a
diagnostic
diskette
or
CD-ROM
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 48
Diagnostics
program
download
.
.
.
.
.
.
.
. 48
Navigating
through
the
diagnostics
programs
.
.
. 48
Running
diagnostics
tests
.
.
.
.
.
.
.
.
.
. 48
Test
selection
.
.
.
.
.
.
.
.
.
.
.
.
. 49
Test
results
.
.
.
.
.
.
.
.
.
.
.
.
. 49
Fixed
disk
advanced
test
(FDAT)
.
.
.
.
.
. 49
Quick
and
Full
erase
-
hard
drive
.
.
.
.
.
. 51
Viewing
the
test
log
.
.
.
.
.
.
.
.
.
.
. 52
Chapter
6.
Using
the
Setup
Utility
.
.
. 53
Starting
the
Setup
Utility
program
.
.
.
.
.
.
. 53
Viewing
and
changing
settings
.
.
.
.
.
.
.
. 53
Exiting
from
the
Setup
Utility
program
.
.
.
.
. 53
Using
passwords
.
.
.
.
.
.
.
.
.
.
.
. 53
Password
considerations
.
.
.
.
.
.
.
.
. 54
User
Password
.
.
.
.
.
.
.
.
.
.
.
. 54
Administrator
Password
.
.
.
.
.
.
.
.
. 54
IDE
Drive
User
Password
.
.
.
.
.
.
.
. 54
IDE
Drive
Master
Password
.
.
.
.
.
.
.
. 54
Setting,
changing,
and
deleting
a
password
.
.
. 55
Using
Security
Profile
by
Device
.
.
.
.
.
.
. 55
Selecting
a
startup
device
.
.
.
.
.
.
.
.
.
. 56
Selecting
a
temporary
startup
device
.
.
.
.
. 56
Changing
the
startup
device
sequence
.
.
.
. 56
Advanced
settings
.
.
.
.
.
.
.
.
.
.
.
. 56
Chapter
7.
Symptom-to-FRU
Index
.
.
. 57
Hard
disk
drive
boot
error
.
.
.
.
.
.
.
.
. 57
Power
Supply
Errors
.
.
.
.
.
.
.
.
.
.
. 57
Diagnostic
error
codes
.
.
.
.
.
.
.
.
.
.
. 59
Beep
symptoms
.
.
.
.
.
.
.
.
.
.
.
.
. 80
No-beep
symptoms
.
.
.
.
.
.
.
.
.
.
.
. 82
POST
error
codes
.
.
.
.
.
.
.
.
.
.
.
. 83
Miscellaneous
error
messages
.
.
.
.
.
.
.
. 86
Undetermined
problems
.
.
.
.
.
.
.
.
.
. 88
Chapter
8.
Replacing
FRUs
.
.
.
.
.
. 89
Locating
connectors
on
the
front
.
.
.
.
.
.
. 89
Locating
the
connectors
on
the
rear
.
.
.
.
.
. 90
Opening
the
cover
.
.
.
.
.
.
.
.
.
.
.
. 90
Locating
components
.
.
.
.
.
.
.
.
.
.
. 91
Identifying
parts
on
the
system
board
.
.
.
.
. 92
Removing
and
replacing
a
memory
module
.
.
. 92
Removing
and
replacing
a
PCI
adapter
.
.
.
.
. 93
Removing
and
replacing
the
battery
.
.
.
.
.
. 94
Removing
and
replacing
the
power
supply
.
.
.
. 96
Removing
and
replacing
the
system
board
.
.
.
. 97
Removing
and
replacing
the
microprocessor
.
.
. 100
Removing
and
replacing
an
optical
drive
.
.
.
. 102
Removing
and
replacing
a
hard
disk
drive
.
.
. 103
Completing
the
FRU
replacement.
.
.
.
.
.
. 104
Chapter
9.
FRU
lists
.
.
.
.
.
.
.
. 105
Machine
Type
8086
.
.
.
.
.
.
.
.
.
.
. 105
Machine
Type
8087
.
.
.
.
.
.
.
.
.
.
. 115
Machine
Type
8088
.
.
.
.
.
.
.
.
.
.
. 122
Machine
Type
8089
.
.
.
.
.
.
.
.
.
.
. 129
Machine
Type
8090
.
.
.
.
.
.
.
.
.
.
. 135
Machine
Type
8094
.
.
.
.
.
.
.
.
.
.
. 142
Chapter
10.
Additional
Service
Information
.
.
.
.
.
.
.
.
.
.
.
. 149
Security
features
.
.
.
.
.
.
.
.
.
.
.
. 149
Hardware
controlled
Passwords
.
.
.
.
.
. 149
Operating
system
password
.
.
.
.
.
.
. 149
Vital
product
data
.
.
.
.
.
.
.
.
.
.
. 149
Management
Information
Format
(MIF)
.
.
. 149
BIOS
levels
.
.
.
.
.
.
.
.
.
.
.
.
.
. 150
Flash
update
procedures
.
.
.
.
.
.
.
.
.
. 150
Updating
(flashing)
BIOS
from
a
diskette
or
CD-ROM
.
.
.
.
.
.
.
.
.
.
.
.
.
. 150
Updating
(flashing)
BIOS
from
your
operating
system
.
.
.
.
.
.
.
.
.
.
.
.
.
. 150
Recovering
from
a
POST/BIOS
update
failure
151
Power
management
.
.
.
.
.
.
.
.
.
.
. 152
©
Lenovo
2005,
2008.
Portions
©
IBM
Corp.
2005.
iii