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 properly wired outlets any equipment that will be 
• 
attached to this product. 
When possible, use one hand only to connect or disconnect signal 
• 
cables. 
Never turn on any equipment when there is evidence of fire, water, or 
• 
structural damage. 
Disconnect the attached power cords, telecommunications systems, 
• 
networks, and modems before you open the device covers, unless 
instructed otherwise in the installation and configuration procedures. 
Connect and disconnect cables as described in the following table 
• 
when installing, moving, or opening covers on this product or 
attached devices.
To Connect To Disconnect
1. Turn everything OFF. 
2. First, attach all cables to devices. 
3. Attach signal cables to 
connectors. 
4. Attach power cords to outlet. 
5. Turn device ON. 1. Turn everything OFF. 
2. First, remove power cords from 
outlet. 
3. Remove signal cables from  connectors. 
4. Remove all cables from devices. 
						

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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 of the battery as required by local ordinances or regulations.
CAUTION: 
When laser products (such as CD-ROMs, DVD-ROM drives, fiber optic 
devices, or transmitters) are installed, note the following: 
Do not remove the covers. Removing the covers of the laser product 
• 
could result in exposure to hazardous laser radiation. There are no 
serviceable parts inside the device. 
Use of controls or adjustments or performance of procedures other 
• 
than those specified herein might result in hazardous radiation 
exposure.
DANGER: 
Some laser products contain an embedded Class 3A or Class 3B laser 
diode. Note the following: 
Laser radiation when open. Do not stare into the beam, do not view 
directly with optical instruments, and avoid direct exposure to the 
beam. 
						

							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 devices. 
						

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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 voltage: 90V-264V(AC)
Input frequency: 47Hz-63Hz 
						

							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 the information supplied with that software 
package.Notes
•	 The	default	is	for	this	computer	to	boot	up	in	quiet	mode	(no	beep,	no memory count) when no errors are detected by POST. 
•	 Before	replacing	any	FRUs,	ensure	that	the	latest	level	of	BIOS	is	 installed on the system. A down-level BIOS might cause false errors 
and unnecessary replacement of the system board.
Use the following procedure to help determine the cause of the problem: 
1.   Power-off the computer and all external devices. 
2.   Check all cables and power cords. 
3.   Set all display controls to the middle position. 
4.   Power-on all external devices. 
5.   Power-on the computer. 
•	 Look	for	displayed	error	codes	
•	 Look	for	readable	instructions	or	a	main	menu	on	the	display.	
If you did not receive the correct response, proceed to step 6.
If you do receive the correct response, proceed to step 7.
6.  Look at the following conditions and follow the instructions: 
•	 If	the	computer	displays	a	POST	error,	go	to	 “POST error codes”. 
•	 If	the	computer	hangs	and	no	error	is	displayed,	continue	at	step	7. 
						

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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 failure? 
–   What, when, where, single, or multiple systems? 
–   Is the failure repeatable? 
–   Has this configuration ever worked? 
–   If it has been working, what changes were made prior to it failing? 
–  Is this the original reported failure?
Diagnostics version 
• 
–   Type and version level
Hardware configuration 
• 
–   Print (print screen) configuration currently in use 
–   BIOS level
Operating system software 
• 
–   Type and version level
Note:   To eliminate confusion, identical systems are considered identical 
only if they:
1. Are the exact machine type and models
2. Have the same BIOS level
3. Have the same adapters/attachments in the same locations
4. Have the same address jumpers/terminators/cabling
5. Have the same software versions and levels
6. Have the same configuration options set in the system
7. Have the same setup for the operation system control files 
Comparing the configuration and software set-up between 
“working and non-working” systems will often lead to problem 
resolution. 
						

							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 system and turn off the computer.
2.  Press and hold the F1 key then turn on the computer. release the F1 
key.
Notes:
a.  If you are using a USB keyboard and the Setup Utility program does 
not display using this method, repeatedly press and release the F1 
key rather than leaving it pressed when turning on the computer.
b.  If a Power-On Password or an administrator password has been set, 
the Setup Utility program menu is not displayed until you type your 
password. For more information, see “Using passwords.”
Viewing and changing settings
The Setup Utility program menu lists items that identify system 
configuration topics. To view or change settings, see “Starting the Setup 
Utility program.”
When working with the Setup Utility program menu, you must use the 
keyboard. The keys used to perform various tasks are displayed on the 
right side of each screen. 
						

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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 combination of up to 64 characters (a-z and 
0-9) and symbols. For security reasons, it is a good idea to use a strong 
password that cannot be easily compromised. We suggest the passwords 
should adhere to the following rules:
•	 Must	have	at	least	seven	characters	in	length
•	 Contain	at	least	one	alphabetic	character	and	one	numeric	character
•	 Setup	Utility	program	and	hard	disk	drive	passwords	are	not	case	sensitive
•	 Not	be	your	name	or	your	user	name
•	 Not	be	a	common	word	or	a	common	name
•	 Be	significantly	different	from	your	previous	password
Administrator password
When a Administrator Password is set, it deters unauthorized persons from 
changing configuration settings. If you are responsible for maintaining 
the settings of several computers, you might want to set a Administrator 
Password.
After you set a Administrator Password, a password prompt is displayed 
each time you try to access the Setup Utility program.
If both the Administrator and Power-On Password are set, you can type 
either password. However, to change any configuration settings, you must 
use your Administrator password. 
						

							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  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 Administrator password, do the following :
Note:  When prompted for a password, you must type your Administrator 
password.
1.  From Security menu, select Set Administrator Password and press 
Enter.
2.  The password dialog box will be displayed. Press Enter in New Password 
and confirm New Password dialog. A setup notice will display that 
changes have been saved.
3.  Select Exit.
4. Select Save changes and Exit.
Power-On Password
When a Power-On Password is set, you cannot start the Setup Utility 
program until a valid password is typed from the keyboard.
Setting, changing, and deleting a Power-On Password
To set, change, or delete a Power-On Password, do the following:
Note
A password can be any combination of up to 64 characters(a-z, and 
0-9).
1.  Start the Setup Utility program (See ”Starting the Setup Utility program”.)
2.  From the Security menu, selet Set Power-On Password and press Enter. 
						

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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. A setup notice will display that 
changes have been saved.
3.  Select Exit.
4. Select Save changes and Exit.
Using Device
Device is used to enable or disable user access to the following device
USB Setup   When this feature is set to Disable,    
  the device of USB Setup is      
  disabled and will not be displayed in  
  the system configuration.
To set Device, do the following:
1.  Start the Setup Utility program (see “Starting the Setup Utility program” 
on page 15).
2.  From the Setup Utility program menu, select Devices.
3.  Select USB Setup.
4.  Select Disabled or Enabled and press Enter.
5.  Return to the Setup Utility program menu and press F10 to save 
configuration changes and exit setup.
Note
If you do not want to save the settings, select Exit and select Discard 
changes and Exit.You can set others such as Audio Setup and 
Network Setup. See the information displayed on the right side of 
the screen.