Lenovo ThinkCentre A52 Hardware Maintenance Manual - Page 273

Additional, Service, Information

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Chapter 9. Additional Service Information This chapter provides additional information that the service representative might find helpful. Security features Security features in this section include the following: v Passwords v Vital Product Data v Management Information Format (MIF) v Alert on LAN™ Hardware controlled Passwords Hardware controlled passwords are set using the Setup Utility program. For more information about passwords, see "Using passwords" on page 53. Operating system password An operating system password is very similar to a power-on password and denies access to the computer by an unauthorized user when the password is activated. The computer is unusable until the password is entered and recognized by the computer. Vital product data Each computer has a unique Vital Product Data (VPD) code stored in the nonvolatile memory on the system board. After you replace the system board, the VPD must be updated. To update the VPD, see "Flash update procedures" on page 268. Management Information Format (MIF) Management Information Format (MIF) is a file used to maintain a list of the system unit serial number along with all serialized components (for example, system board, riser card, memory, and processor) At the time of computer manufacture, the EPROM is loaded with the serial numbers of the system and all major components. A company called Retain-a-Group is a central data warehouse offering serial number data management. Retain-a-Group acts as a focal point to law enforcement. The customer has the option to purchase serial number information and services from Retain-a-Group. It is the customer's responsibility to maintain the MIF file and to inform Retain-a-Group of any changes to the file. Some customers might request that their servicers assist them in maintaining the MIF file when serialized components are replaced during hardware service. This assistance is between the customer and the servicer. The servicer can use the DMI MIF Browser to update the MIF information in the EPROM. It is anticipated that some servicers might charge for this service. To update the EPROM using the DMI MIF Browser, use the following procedure. © Lenovo 2005, 2008. Portions © IBM Corp. 2005. 267

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Chapter
9.
Additional
Service
Information
This
chapter
provides
additional
information
that
the
service
representative
might
find
helpful.
Security
features
Security
features
in
this
section
include
the
following:
v
Passwords
v
Vital
Product
Data
v
Management
Information
Format
(MIF)
v
Alert
on
LAN
™
Hardware
controlled
Passwords
Hardware
controlled
passwords
are
set
using
the
Setup
Utility
program.
For
more
information
about
passwords,
see
“Using
passwords”
on
page
53.
Operating
system
password
An
operating
system
password
is
very
similar
to
a
power-on
password
and
denies
access
to
the
computer
by
an
unauthorized
user
when
the
password
is
activated.
The
computer
is
unusable
until
the
password
is
entered
and
recognized
by
the
computer.
Vital
product
data
Each
computer
has
a
unique
Vital
Product
Data
(VPD)
code
stored
in
the
nonvolatile
memory
on
the
system
board.
After
you
replace
the
system
board,
the
VPD
must
be
updated.
To
update
the
VPD,
see
“Flash
update
procedures”
on
page
268.
Management
Information
Format
(MIF)
Management
Information
Format
(MIF)
is
a
file
used
to
maintain
a
list
of
the
system
unit
serial
number
along
with
all
serialized
components
(for
example,
system
board,
riser
card,
memory,
and
processor)
At
the
time
of
computer
manufacture,
the
EPROM
is
loaded
with
the
serial
numbers
of
the
system
and
all
major
components.
A
company
called
Retain-a-Group
is
a
central
data
warehouse
offering
serial
number
data
management.
Retain-a-Group
acts
as
a
focal
point
to
law
enforcement.
The
customer
has
the
option
to
purchase
serial
number
information
and
services
from
Retain-a-Group.
It
is
the
customer’s
responsibility
to
maintain
the
MIF
file
and
to
inform
Retain-a-Group
of
any
changes
to
the
file.
Some
customers
might
request
that
their
servicers
assist
them
in
maintaining
the
MIF
file
when
serialized
components
are
replaced
during
hardware
service.
This
assistance
is
between
the
customer
and
the
servicer.
The
servicer
can
use
the
DMI
MIF
Browser
to
update
the
MIF
information
in
the
EPROM.
It
is
anticipated
that
some
servicers
might
charge
for
this
service.
To
update
the
EPROM
using
the
DMI
MIF
Browser,
use
the
following
procedure.
©
Lenovo
2005,
2008.
Portions
©
IBM
Corp.
2005.
267