Lenovo ThinkCentre A50 Hardware Maintenance Manual - Page 6

lists, Additional, Service, Information, Appendix., Notices - 8177

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Locating components 123 Identifying parts on the system board . . . . . 124 Removing and replacing memory 125 Removing and replacing a PCI adapter . . . . . 125 Removing and replacing the battery 127 Removing and replacing the power supply . . . 127 Removing and replacing the system board . . . 128 Removing and replacing the microprocessor . . . 129 Removing and replacing drives 131 Closing the cover and connecting cables . . . . 133 Chapter 11. FRU lists 135 Machine Type 8084 135 Machine Type 8085 145 Machine Type 8126 155 Machine Type 8147 159 Machine Type 8148 163 Machine Type 8149 172 Machine Type 8174 178 Machine Type 8175 181 Machine Type 8176 188 Machine Type 8177 192 Machine Type 8178 203 Machine Type 8179 210 Chapter 12. Additional Service Information 213 Security features Hardware controlled Passwords . . . . . Operating system password Vital product data Management Information Format (MIF) . . BIOS levels Flash update procedures Updating (flashing) BIOS from a diskette or CD-ROM Updating (flashing) BIOS from your operating system Recovering from a POST/BIOS update failure Power management Automatic configuration and power interface (ACPI) BIOS Automatic Power-On features Recovering software using the Rescue and Recovery program Starting the Rescue and Recovery workspace . 213 . 213 . 213 . 213 . 213 . 214 . 214 . 214 . 214 215 . 216 . 216 . 216 . 217 217 Appendix. Notices 219 Television output notice 220 Trademarks 220 iv Hardware Maintenance Manual

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Locating
components
.
.
.
.
.
.
.
.
.
.
. 123
Identifying
parts
on
the
system
board
.
.
.
.
. 124
Removing
and
replacing
memory
.
.
.
.
.
. 125
Removing
and
replacing
a
PCI
adapter
.
.
.
.
. 125
Removing
and
replacing
the
battery
.
.
.
.
.
. 127
Removing
and
replacing
the
power
supply
.
.
. 127
Removing
and
replacing
the
system
board
.
.
. 128
Removing
and
replacing
the
microprocessor
.
.
. 129
Removing
and
replacing
drives
.
.
.
.
.
.
. 131
Closing
the
cover
and
connecting
cables
.
.
.
. 133
Chapter
11.
FRU
lists
.
.
.
.
.
.
.
. 135
Machine
Type
8084
.
.
.
.
.
.
.
.
.
.
. 135
Machine
Type
8085
.
.
.
.
.
.
.
.
.
.
. 145
Machine
Type
8126
.
.
.
.
.
.
.
.
.
.
. 155
Machine
Type
8147
.
.
.
.
.
.
.
.
.
.
. 159
Machine
Type
8148
.
.
.
.
.
.
.
.
.
.
. 163
Machine
Type
8149
.
.
.
.
.
.
.
.
.
.
. 172
Machine
Type
8174
.
.
.
.
.
.
.
.
.
.
. 178
Machine
Type
8175
.
.
.
.
.
.
.
.
.
.
. 181
Machine
Type
8176
.
.
.
.
.
.
.
.
.
.
. 188
Machine
Type
8177
.
.
.
.
.
.
.
.
.
.
. 192
Machine
Type
8178
.
.
.
.
.
.
.
.
.
.
. 203
Machine
Type
8179
.
.
.
.
.
.
.
.
.
.
. 210
Chapter
12.
Additional
Service
Information
.
.
.
.
.
.
.
.
.
.
.
. 213
Security
features
.
.
.
.
.
.
.
.
.
.
.
. 213
Hardware
controlled
Passwords
.
.
.
.
.
. 213
Operating
system
password
.
.
.
.
.
.
. 213
Vital
product
data
.
.
.
.
.
.
.
.
.
.
. 213
Management
Information
Format
(MIF)
.
.
. 213
BIOS
levels
.
.
.
.
.
.
.
.
.
.
.
.
.
. 214
Flash
update
procedures
.
.
.
.
.
.
.
.
.
. 214
Updating
(flashing)
BIOS
from
a
diskette
or
CD-ROM
.
.
.
.
.
.
.
.
.
.
.
.
.
. 214
Updating
(flashing)
BIOS
from
your
operating
system
.
.
.
.
.
.
.
.
.
.
.
.
.
. 214
Recovering
from
a
POST/BIOS
update
failure
215
Power
management
.
.
.
.
.
.
.
.
.
.
. 216
Automatic
configuration
and
power
interface
(ACPI)
BIOS
.
.
.
.
.
.
.
.
.
.
.
.
. 216
Automatic
Power-On
features
.
.
.
.
.
.
. 216
Recovering
software
using
the
Rescue
and
Recovery
program
.
.
.
.
.
.
.
.
.
.
.
. 217
Starting
the
Rescue
and
Recovery
workspace
217
Appendix.
Notices
.
.
.
.
.
.
.
.
. 219
Television
output
notice
.
.
.
.
.
.
.
.
.
. 220
Trademarks
.
.
.
.
.
.
.
.
.
.
.
.
.
. 220
iv
Hardware
Maintenance
Manual