Acer Aspire 4520 4220 4520G 4220G User Manual

							
Chapter 245
The table below describes the parameters in this screen. Settings in boldface are the default and suggested 
parameter settings.
NOTE:  When you are prompted to enter a password, you have  three tries before the system halts. Don’t forget 
your password. If you forget your password, you ma y have to return your notebook computer to your 
dealer to reset it.
Setting a Password
Follow these steps as you set the supervisor, user, or hard disk password:
1. Use the  w and  y keys to highlight the Set Supervisor Password parameter and press the  e key. The 
Set Supervisor Password box appears:
2. Type a password in the “Enter New Password” fiel d. The password length can not exceed 8 alphanumeric 
characters (A-Z, a-z, 0-9, not case sensitive). Rety pe the password in the “Confirm New Password” field.
IMPORTANT:  Be very careful when typing your passwor d because the characters do not appear on the 
screen.
3. Press  e. After setting the password, th e computer sets the Superviso r Password parameter to “Set”.
4. If desired, you can opt to enable the Password on boot parameter.
5. When you are done, press  u to save the changes and  exit the BIOS Setup Utility.
ParameterDescriptionOption
Supervisor Password is Shows the  setting of the Supervisor password
Clear or Set
User Password is Shows the setting of the user password.
Clear or Set
Hard Disk Password Status Shows the setting of the hard disk password.
Clear or Set
Set Supervisor Password Press Enter to set the supervisor password.  When set, this password protects the BIOS 
Setup Utility from unauthorized access. The 
user can not either enter the Setup menu nor 
change the value of parameters.
Set User Password Press Enter to set the user password. When  user password is set, this password protects 
the BIOS Setup Utility from unauthorized 
access. The user can enter Setup menu only 
and does not have right to change the value of 
parameters.
Set Hard Disk Password Press Enter to set the hard disk password.  When set, this password protects the BIOS 
Setup Utility from unauthorized access. The 
user can not either enter the Setup menu nor 
change the value of parameters.
Password on Boot Defines whether a password is required or not  while the events defined in this group 
happened. The following sub-options are all 
requires the Supervisor password for changes 
and should be grayed out if the user password 
was used to enter setup.
Disabled or Enabled 
						

							
46Chapter 2
Removing a Password
Follow these steps:
1.Use the  w and  y keys to highlight the Set Supervisor Password parameter and press the  e key. The 
Set Supervisor Password box appears:
2. Type the current password in the Enter Current Password field and press  e.
3. Press  e twice  without  typing anything in the Enter New Password and Confirm New Password fields. 
The computer then sets the Supervisor Password parameter to “Clear”.
4. When you have changed the settings, press  u to save the changes and exit the BIOS Setup Utility.
Changing a Password
1. Use the  w and  y keys to highlight the Set Supervisor Password parameter and press the  e key. The 
Set Supervisor Password box appears:
2. Type the current password in the Enter Current Password field and press  e.
3. Type a password in the Enter New Password field. Retype the password in the Confirm New Password 
field.
4. Press  e. After setting the password, th e computer sets the Superviso r Password parameter to “Set”.
5. If desired, you can enable the Password on boot parameter.
6. When you are done, press  u to save the changes and  exit the BIOS Setup Utility.
If the verification is OK, the screen will display as following. 
The password setting is complete after the user presses  u.
If the current password entered does  not match the actual current password, the screen will show you the 
Setup Warning. 
						

							
Chapter 247
If the new password and confirm new password strings do not match, the screen will display the following 
message. 
						

							
48Chapter 2
Boot
This menu allows the user to decide the order of boot devices to load the operating system. Bootable devices 
includes the diskette drive in module bay, the onbo ard hard disk drive, and the CD-ROM in module bay.
  Information
 
 
Item Specific Help  
 
 
 
 
   
  
  
    
   
Keys used to view or
configure devices :
Up and Down arrows 
select a device.
 and <
-> moves
the device up or down.
 and  specifies
the device fixed or 
removable. 
 exclude or include 
the device to boot. 
 enables or 
disables a device.
 Loads default
boot sequence.  
 
F1
        F5/F6
                  F9
 Setup Defaults 
Esc    Enter   Select  Sub-Menu F10 Save and Exit  
Help
Exit Select Item
Select Menu Change Values
Boot Priority Order:
1:  IDE 4 : Hitachi HTS541680J9SA00-(S
2:  PCI SCSI :
3:  IDE CDROM : HL-DT-STCD-RW/DVD DRIVE-(P
4:  PCI BEV : NVIDIA Boot Agent 244.0538
5:  USB HDD :
6:  USB CDROM :
7:  USB FDC :
8:  USB KEY :
Excluded from boot order :
PhoenixBIOS Setup Utility
Main Security Power Exit Boot 
						

							
Chapter 249
Power
The Power screen displays a summary of your computer power settings, and also includes advanced setup 
parameters. It allows the user to enable and dis able the power management options on the computer and 
specify standard power parameters for specific components.
The table below describes the parameters in this screen. Settings in  boldface are the default and suggested 
parameter settings.
ParameterDescriptionFormat/Option
C State Configuration
C1E Configuration
CPU Throttle Enables, disables  the CPU throttle, to increase 
CPU speed and performance.
Disabled or Enabled
CPU Spread Spectrum
iGPU Spread Spectrum
SATA Spread Spectrum
PState Configuration
Enabled or Disabled
USB CSC Resume Enables, di sables USB CSC resume.
Disabled or Enabled
DIPM Enables, disables  device initiated power 
management on the hard disk.
Disabled or Enabled
HIPM
Enabled or Disabled
   Information
 
 
Item Specific Help  
 
   
Enable or Disable
C2/C3 CPU power states.
Auto enables C2 and C3 
if single core is
detected and disables
C2+C3 if dual 
core is detected.  
 
F1
        F5/F6
                  F9
 Setup Defaults 
Esc    Enter   Select  Sub-Menu F10 Save and Exit  
iGPU Spread Spectrum : [2.00% Triangular Center]
SATA Spread Spectrum : [Triangular Down]
PState Configuration [Enabled]
USB CSC Resume [Disabled] C State Configuration [Auto]
CPU Spread Spectrum : [0.50% H.Kiss Up]
DIPM [Disabled]
HIPM [Enabled]
PCI Clocks : [Enabled]
AltVid [Disabled]
Power Saver
ASPM (L0s/L1) [Enabled]
Help Exit Select Item
Select Menu Change Values
C1E Configuration [Auto]
PhoenixBIOS Setup Utility
Main Security
PowerExit
Boot
CPU Throttle : [Disabled]
SATA Spread Spectrum : [Triangular Down] 
						

							
50Chapter 2
PCI Clocks Enables, disables the PCI clock.Enabled or Disabled
AltVid Enables, disables the  Altvid function, to reduce 
processor voltage to the minimal operation level.
Disabled or Enabled
Power Saver
ASPM (L0s/L1)
Enabled or Disabled
ParameterDescriptionFormat/Option 
						

							
Chapter 251
Exit
The Exit screen contains parameters that help safeguard and protect your computer from unauthorized use.
The table below describes the parameters in this screen.
ParameterDescription
Exit Saving Changes Exit System Setup and save your changes to CMOS.
Exit Discarding Changes Exit utility without saving setup data to CMOS.
Load Setup Default Load default values for all SETUP item.
Discard Changes Load previous values from CMOS for all SETUP items.
Save Changes Save Setup Data to CMOS.
   Information
 
 
Item Specific Help  
 
 
 
   
  
  
    
   
Exit System Setup and 
save your changes to 
CMOS.  
 
F1         F5/F6
                  F9
 Setup Defaults 
Esc    Enter   Select  Sub-Menu F10 Save and Exit  
Help
Exit Select Item
Select Menu Change Values
Exit Saving Changes
Exit Discarding Changes
Load Setup Defaults
Discard Changes
Save Changes
[Enter]
[Enter]
[Enter]
[Enter]
[Enter]
PhoenixBIOS Setup Utility
Main Security Power
Exit
Boot 
						

							
52Chapter 2
BIOS Flash Utility
The BIOS flash memory update is required for the following conditions:
TNew versions of system programs
TNew features or options
TRestore a BIOS when it becomes corrupted. 
Use the Phlash util ity to update the system BIOS flash ROM.
NOTE:  If you do not have a crisis recovery diskette at hand, then you should create a  Crisis Recovery 
Diskette  before you use the Phlash utility.
NOTE:  Do not install memory-related drivers (XMS , EMS, DPMI) when you use the Phlash.
NOTE:  Please use the AC adaptor power supply when you run  the Phlash utility. If the battery pack does not 
contain enough power to finish BIOS flash, you  may not boot the system because the BIOS is not 
completely loaded. 
Follow the steps below to run the Phlash.
1. Prepare a bootable diskette.
2. Copy the flash utilities to the bootable diskette.
3. Then boot the system from  the bootable diskette. The flash ut ility has auto-execution function. 
						

							
Chapter 353
This chapter contains step-by-step procedures on how to disass emble the notebook computer for 
maintenance and troubleshooting.
To disassemble the computer, you need the following tools:
TWrist grounding strap and conductive mat for preventing electrostatic discharge
TSmall Philips screw driver
TPhilips screwdriver
TPlastic flat head screw driver
TTw e e z e r s
NOTE:  The screws for the different components vary in size. During the disassembly process, group the 
screws with the corresponding components to avoid mismatch when putting back the components. 
When you remove the stripe cover, pl ease be careful not to scrape the cover.
Chapter 3
Machine Disassembly and Replacement 
						

							
54Chapter 3
General Information
Before You Begin
Before proceeding with the disassembly procedure, make sure that you do the following:
1.Turn off the power to the  system and all peripherals.
2. Unplug the AC adapter and all power and signal cables from the system.
3. Remove the battery pack.