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Lenovo ThinkCentre M55e User Manual - Page 18

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complies with EN 50332-2 Sub clause 5.1. This specification limits the computer's maximum wide band true RMS output voltage to 150mV. To help protect against hearing loss, ensure that the headphones or earphones you use also comply with EN 50332-2 (Sub clause 6.1) for a wide band characteristic voltage of 75mV. Using headphones that do not comply with EN 50332-2 can be dangerous due to excessive sound pressure levels. If your Lenovo computer came with headphones or earphones in the package, as a set, the combination of the headphones or earphones and the computer already complies with the specifications of EN 50332-1. If different headphones or earphones are used, ensure that they comply with EN 50332-2. (Sub clause 6.1) for a wide band characteristic voltage of 75mV. Using headphones that do not comply with EN 50332-2 can be dangerous due to excessive sound pressure levels. Additional safety information Plastic bags can be dangerous. Keep plastic bags away from babies and children to avoid danger of suffocation. xvi User Guide

Section	Page
Contents	5
Important safety information	7
Conditions that require immediate action	7
General safety guidelines	8
Service and upgrades	8
Static electricity prevention	9
Power cords and power adapters	9
Voltage-selection switch	10
Extension cords and related devices	11
Plugs and outlets	11
External devices	11
Batteries	11
Heat and product ventilation	12
Operating environment	13
Electrical current safety information	13
Lithium battery notice	14
Modem safety information	14
Laser compliance statement	15
Power supply statement	15
Products with television tuner options installed	15
Note to CATV system installer	16
Example of antenna grounding	16
Data safety	17
Cleaning and maintenance	17
Using headphones or earphones	17
Additional safety information	18
Introduction	19
Chapter 1. Arranging your workspace	21
Comfort	21
Glare and lighting	21
Air circulation	22
Electrical outlets and cable lengths	22
Chapter 2. Setting up your computer	23
Installing the vertical stand	23
Connecting your computer	24
Turning on power	30
Finishing the software installation	30
Completing important tasks	30
Updating your operating system	31
Installing other operating systems	31
Updating your antivirus software	31
Shutting down the computer	31
Chapter 3. Installing options	33
Features	33
Available options	36
Specifications	37
Supported operating positions	38
Tools required	38
Handling static-sensitive devices	38
Installing external options	39
Locating controls and connectors on the front of your computer	39
Locating connectors on the rear of your computer	40
Obtaining device drivers	41
Removing the cover	42
Locating components	43
Accessing system board components	44
Identifying parts on the system board	45
Installing memory	49
Installing PCI adapters	50
Installing internal drives	51
Drive specifications	52
Installing a drive in bay 1	53
Connecting drives	53
Connecting an optical drive or a parallel ATA hard disk drive	53
Connecting an additional serial ATA hard disk drive	54
Installing a diskette drive in bay 3	54
Installing security features	55
Integrated cable lock	56
Padlock	57
Password protection	57
Changing the battery	57
Erasing a lost or forgotten password (clearing CMOS)	58
Replacing the cover and connecting the cables	59
Chapter 4. Recovering software	61
Creating and using the Product Recovery disc	61
Performing backup and recovery operations	62
Using the Rescue and Recovery workspace	63
Creating and using rescue media	64
Creating and using a Recovery Repair diskette	65
Recovering or installing device drivers	66
Setting a rescue device in the startup sequence	67
Solving recovery problems	67
Chapter 5. Using the Setup Utility	69
Starting the Setup Utility program	69
Viewing and changing settings	69
Using passwords	69
Password considerations	69
User Password	70
Administrator Password	70
Setting, changing, and deleting a password	70
Using Security Profile by Device	70
Selecting a startup device	71
Selecting a temporary startup device	71
Changing the startup device sequence	71
Advanced settings	72
Exiting from the Setup Utility program	72
Chapter 6. Updating system programs	73
Using system programs	73
Updating (flashing) BIOS from a diskette	73
Chapter 7. Troubleshooting and diagnostics	75
Basic troubleshooting	75
Diagnostic programs	76
PC-Doctor for Windows	77
PC-Doctor for DOS	77
Creating a diagnostic CD image	77
Creating diagnostic diskettes	77
Running diagnostics from the CD or diskettes	78
Running diagnostics from the Rescue and Recovery workspace	78
PC-Doctor for Windows PE	79
Running diagnostics from the Rescue and Recovery workspace	79
Cleaning the mouse	79
Optical mouse	79
Non-optical mouse	79
Chapter 8. Getting information, help, and service	81
Information resources	81
Online Books folder	81
ThinkVantage Productivity Center	81
Access Help	82
Safety and warranty	82
www.lenovo.com	82
Help and service	82
Using the documentation and diagnostic programs	83
Calling for service	83
Using other services	84
Purchasing additional services	84
Appendix A. Manual modem commands	85
Basic AT commands	85
Extended AT commands	87
MNP/V.42/V.42bis/V.44 commands	88
Fax Class 1 commands	89
Fax Class 2 commands	89
Voice commands	90
Appendix B. Notices	93
Television output notice	94
Trademarks	94

Match case Limit results 1 per page

complies

with

50332-2

Sub

clause

5.1.

This

specification

limits

the

computer’s

maximum

wide

band

true

RMS

output

voltage

150mV.

help

protect

against

hearing

loss,

ensure

that

the

headphones

earphones

you

use

also

comply

with

50332-2

(Sub

clause

6.1)

for

wide

band

characteristic

voltage

75mV.

Using

headphones

that

not

comply

with

50332-2

can

dangerous

due

excessive

sound

pressure

levels.

your

Lenovo

computer

came

with

headphones

earphones

the

package,

set,

the

combination

the

headphones

earphones

and

the

computer

already

complies

with

the

specifications

50332-1.

different

headphones

earphones

are

used,

ensure

that

they

comply

with

50332-2.

(Sub

clause

6.1)

for

wide

band

characteristic

voltage

75mV.

Using

headphones

that

not

comply

with

50332-2

can

dangerous

due

excessive

sound

pressure

levels.

Additional

safety

information

Plastic

bags

can

dangerous.

Keep

plastic

bags

away

from

babies

and

children

avoid

danger

suffocation.

xvi

User

Guide