Lenovo ThinkCentre M55p User Manual - Page 50

3.

Locate

the

Clear

CMOS/Recovery

jumper

on

the

system

board.

See

“Identifying

parts

on

the

system

board”

on

page

23.

4.

Move

the

jumper

from

the

standard

position

(pins

1

and

2)

to

the

maintenance

or

configure

position

(pins

2

and

3).

Note:

If

the

system

board

has

only

two

pins

for

clearing

CMOS,

add

a

jumper

to

the

two

pins.

5.

Replace

the

cover

and

connect

the

power

cord.

See

“Replacing

the

cover

and

connecting

the

cables.”

6.

Restart

the

computer,

leave

it

on

for

approximately

ten

seconds.

Turn

off

the

computer

by

holding

the

power

switch

for

approximately

five

seconds.

The

computer

will

turn

off.

7.

Repeat

steps

2

through

4

on

page

33.

8.

Move

the

jumper

back

to

the

standard

(pins

1

and

2).

Note:

If

your

system

board

has

only

two

pins

for

clearing

CMOS,

just

remove

the

jumper

from

the

two

pins.

9.

Replace

the

cover

and

connect

the

power

cord.

See

“Replacing

the

cover

and

connecting

the

cables.”

Replacing

the

cover

and

connecting

the

cables

After

working

with

options,

you

need

to

install

any

removed

parts,

replace

the

cover,

and

reconnect

any

cables,

including

telephone

lines

and

power

cords.

Also,

depending

on

the

option

that

is

installed,

you

might

need

to

confirm

the

updated

information

in

the

Setup

Utility

program.

To

replace

the

cover

and

connect

cables

to

your

computer:

1.

Ensure

that

all

components

have

been

reassembled

correctly

and

that

no

tools

or

loose

screws

are

left

inside

your

computer.

2.

If

the

hard

disk

drive

bracket

was

removed,

reinstall

the

bracket.

See

“Removing

the

hard

disk

drive

mounting

bracket”

on

page

21.

3.

Clear

any

cables

that

might

impede

the

replacement

of

the

cover.

4.

Position

the

cover

on

the

chassis

so

that

the

rail

guides

on

the

bottom

of

the

cover

engage

the

rails

and

push

the

cover

closed

until

it

latches.

5.

Install

any

cover

locking

devices

such

as

a

cable

lock

or

padlock

as

necessary.

34

User

Guide

Section	Page
Contents	5
Important safety information	7
Conditions that require immediate action	7
General safety guidelines	8
Service	8
Power cords and power adapters	9
Extension cords and related devices	10
Plugs and outlets	10
Batteries	10
Heat and product ventilation	11
CD and DVD drive safety	11
Additional safety information	12
Lithium battery notice	12
Modem safety information	13
Laser compliance statement	13
Power supply statement	14
Introduction	15
Chapter 1. Arranging your workspace	17
Comfort	17
Glare and lighting	17
Air circulation	18
Electrical outlets and cable lengths	18
Chapter 2. Setting up your computer	19
Connecting your computer	19
Turning on power	24
Finishing the software installation	24
Completing important tasks	24
Updating your operating system	25
Installing other operating systems	25
Updating your antivirus software	25
Shutting down the computer	25
Chapter 3. Installing options	27
Features	27
Available options	30
Specifications	31
Tools required	32
Handling static-sensitive devices	32
Installing external options	32
Locating the connectors on the front of your computer	33
Locating the connectors on the rear of your computer	34
Obtaining device drivers	35
Removing the cover	35
Removing the hard disk drive mounting bracket	37
Locating components	38
Identifying parts on the system board	39
Installing memory	39
Installing PCI adapters	41
Installing internal drives	42
Drive specifications	42
Installing a drive in bay 1 or bay 2	44
Connecting serial ATA drives	46
Installing security features	46
Identifying security locks	47
Padlock	47
Integrated cable lock	48
Password protection	48
Changing the battery	48
Erasing a lost or forgotten password (clearing CMOS)	49
Replacing the cover and connecting the cables	50
Chapter 4. Recovering software	53
Creating and using product recovery discs	53
Backup and recovery	54
Using the Rescue and Recovery workspace	55
Solving recovery problems	56
Creating and using rescue media	56
Creating and using a Recovery Repair diskette	57
Recovering or installing device drivers	58
Setting a rescue device in the startup sequence	58
Chapter 5. Using the Setup Utility	61
Starting the Setup Utility program	61
Viewing and changing settings	61
Using passwords	61
User Password	61
Setting and changing a user password	61
Deleting a user password	62
Administrator password	62
Setting or changing an administrator password	62
Deleting an administrator password	62
Selecting a startup device	63
Selecting a temporary startup device	63
Changing the startup device sequence	63
Exiting from the Setup Utility program	63
Chapter 6. Updating system programs	65
Using system programs	65
Updating (flashing) BIOS from a diskette	65
Chapter 7. Troubleshooting and diagnostics	67
Basic troubleshooting	67
Diagnostic programs	68
PC-Doctor for Windows	69
PC-Doctor for DOS	69
Creating a diagnostic CD image	69
Creating diagnostic diskettes	69
Running diagnostics from the CD or diskettes	70
Running diagnostics from the Rescue and Recovery workspace	70
Cleaning the mouse	70
Optical mouse	71
Non-optical mouse	71
Chapter 8. Getting information, help, and service	73
Information resources	73
Online Books folder	73
ThinkVantage Productivity Center	73
Access Help	74
Warranty and safety	74
www.lenovo.com	74
Help and service	74
Using the documentation and diagnostic programs	75
Calling for service	75
Using other services	76
Purchasing additional services	76
Appendix A. Manual modem commands	77
Basic AT commands	77
Extended AT commands	79
MNP/V.42/V.42bis/V.44 commands	80
Fax Class 1 commands	81
Fax Class 2 commands	81
Voice commands	82
Appendix B. Notices	85
Television output notice	86
Trademarks	86

Lenovo ThinkCentre M55p User Manual - Page 50

Replacing, cover, connecting, cables

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