Lenovo B305 Service Manual

Chapter 2. Safety information
      9
Safety notices
The caution and danger safety notices in this section are provided in the 
the language of English.
DANGER 
Electrical current from power, telephone and communication cables is 
hazardous.
To avoid a shock hazard: Do not connect or disconnect any cables or perform installation, 
• 
maintenance, or reconfiguration of this product during an electrical 
storm. 
Connect all power cords to a properly wired and grounded electrical 
• 
outlet. 
Connect to...

Hardware Maintenance Manual
10      
CAUTION: 
When replacing the lithium battery, use only Part Number 33F8354 or 
an equivalent type battery recommended by the manufacturer. If your 
system has a module containing a lithium battery, replace it only with 
the same module type made by the same manufacturer. The battery 
contains lithium and can explode if not properly used, handled, or 
disposed of.
Do not:Throw or immerse into water 
• 
Heat to more than 100°C (212°F)
• 
Repair or disassemble
• 
Dispose...

Chapter 2. Safety information
      11
CAUTION:
Use safe practices when lifting.
CAUTION:
The power control button on the device and the power switch on the 
power supply do not turn off the electrical current supplied to the 
device. The device also might have more than one power cord. To 
remove all electrical current from the device, ensure that all power cords 
are disconnected from the power source.
1
2
CAUTION: 
Do not place any object weighing more than 82 kg (180 lbs.) on top of 
rack-mounted...

Hardware Maintenance Manual
12      
General information
3
This chapter provides general information that applies to all machine 
types supported by this publication.
Specifications
This section lists the physical specifications for your computer.
Type Lenovo IdeaCentre B3
This section lists the physical specifications.
EnvironmentAir temperature:Operating: 10° to 35°C
Transit: -20° to 55°C
Humidity: Operating: 35% to 80%
Transit: 20% to 93% (40°C)
Altitude: 86KPa to 106KPa
Electrical input Input...

Chapter 4. General Checkout
      13
General Checkout
4
The drives in the computer you are servicing might have been 
rearranged or the drive startup sequence changed. Be extremely 
careful during write operations such as copying, saving, or 
formatting. Data or programs can be overwritten if you select an 
incorrect drive.
Attention
General error messages appear if a problem or conflict is found by an 
application program, the operating system, or both. For an explanation 
of these messages, refer to...

Hardware Maintenance Manual
14      
7. If you cannot continue, replace the last device tested.
Problem determination tips 
Due to the variety of hardware and software combinations that can be 
encountered, use the following information to assist you in problem 
determination. If possible, have this information available when 
requesting assistance from Service Support and Engineering functions.
Machine type and model
• 
Processor or hard disk upgrades
• 
Failure symptom 
• 
–   Do diagnostics indicate a...

Chapter 5. Using the Setup Utility
      15
Using the Setup Utility
5
The Setup Utility program is used to view and change the configuration 
settings of your computer, regardless of which operating system you are 
using. However, the operating-system settings might override any similar 
settings in the Setup Utility program.
Starting the Setup Utility program
To start the Setup Utility program, do the following:
1. If your computer is already on when you start this procedure, shut 
down the operating...

Hardware Maintenance Manual
16      
Using passwords
By using the Setup Utility program, you can set passwords to prevent 
unauthorized persons from gaining access to your computer and data. 
See “Starting the Setup Utility program.” The following types of passwords 
are available:
•	 Administrator	Password
•	 Power-On	Password
You do not have to set any passwords to use your computer. However, if 
you decide to set any passwords, read the following sections.
Password considerations
A password can be any...

Chapter 5. Using the Setup Utility
      17
Setting, changing, and deleting a Administrator password
To set, change, or delete a password, do the following:Note
A password can be any combination of up to 64 characters (a-z, and 
0-9). For more information, see “Password considerations” on page 16.
1.  Start the Setup Utility program (see “Starting the Setup Utility program” 
on page 15).
2.  From Security menu, select Set Administrator Password and press 
Enter.
3.  The password dialog box will be...

Hardware Maintenance Manual
18      
3. The password dialog box will be displayed. Type the new password, and 
press Enter.
4.  when prompted to confirm the password, type the password again. If 
you type the password correctly, the password will be installed.
To delete a previously set Power-On Password, do the following :
1.  From the Security menu, select Set Power-On Password and press 
Enter.
2.  The password dialog box will be displayed. Press Enter in New Password 
and confirm New Password dialog....