Acer Aspire 9520 Service Guide

55Chapter 2
F12 Boot Menu When this is selected, users can modify device boot priority by pressing F12 key 
during POST. When this is not selected, device boot priority will not be 
adjustable during POST.
D2D Recovery Allow user to enable/disable the Disk-to-Disk recovery
ParameterDescription 

Chapter 256
Advanced
The Advanced menu screen contains parameters involving your hardware devices. It also provides advanced 
settings of the system.
The table below describes the parameters in the screen. Settings in boldface are the default and suggested 
parameter settings.
ParameterDescriptionOptions
Infrared Port Enables, disables or auto detects the Infrared port.Auto/Enabled/Disabled
PhoenixBIOS Setup Utility
Info. MainAdvancedSecurity Boot Exit
Item Specific Help
Infrared Port: [Enabled]Configure...

57Chapter 2
Security
The Security screen contains parameters that help safeguard and protect your computer from 
unauthorized use.
The table below describes the parameters in this screen. Settings in boldface are the default and 
suggested  parameter settings.
ParameterDescriptionOption
Supervisor Password Is N/A N/A
User Password Is N/A N/A
HDD Password Is N/A N/A
Set Supervisor Password Press Enter to set the administrator 
password. When set, this password 
protects the BIOS Setup Utility from...

Chapter 258
Set Supervisor/User Password
If password on boot is required, the password must be set otherwise it cannot be enabled.
The formats of the password are as follows:
Length           No more than 8 characters
Characters    0-9,A-Z (not case sensitive) 
While these fields are highlighted and press “Enter”,  a window similar to the following is shown: 
If there is an old password then setup will prompt with the following window instead and a current password 
will be required to be entered at...

59Chapter 2
User can now type password in field “Enter New Password”, and re-enter password in field “Confirm New 
Password” for verification. 
If the verification is OK: 
The password setting is complete after user presses enter. 
If the current password entered does not match the actual current password: 
If the new password and confirm new password strings do not match: 
Setup Notice 
Changes have been saved. 
[ continue] 
Setup Warning 
Invalid password 
Re-enter Password 
[ continue] 
Setup Warning...

Chapter 260
Boot
This menu allows the user to decide the order of boot devices to load the operating system. Bootable 
devices includes the distette drive in module bay, the onboard hard disk drive and the CD-ROM 
in module bay and onboard LAN device.
.
ParameterDescription
Boot priority order Keys used to view or configure devices: Up and Down 
arrows select a device.  and  movew the device up 
or down.  and  specifies the device fixed or 
removable.
>
 exclude or include the device to boot.
 enables or...

61Chapter 2
Exit
The table below describes the parameters in this screen.
ParameterDescription
Exit Saving Changes Exit System Setup and save your changes to CMOS
Exit Discarding 
ChangesExit utility without saving Setup data to CMOS
Load Setup Default Load default values for all SETUP items
Discard Changes Load previous values from CMOS for all SETUP items
Save Changes  Save Setup Data to CMOS
PhoenixBIOS Setup Utility
Info. Main SecurityBoot
Item Specific Help
Exit Saving Changes
Exit Dicarding...

Chapter 362
This chapter contains step-by-step procedures on how to disassemble 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...

63Chapter 3
Disassembly Procedure Flowchart
The flowchart on the succeeding page gives you a graphic representation on the entire disassembly sequence 
and instructs you on the components that need to be removed during servicing. For example, if you want to 
remove the main board, you must first remove the keyboard, then disassemble the inside assembly frame in 
that order. 

Chapter 364
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.
NOTE:  This product uses mylar or tape to fasten the FFC/FPC/connectors/cable, you may need to tear the 
tape or mylar before you disconnect different FFC/FPC/connectors.
NOTE: There are several types of screws used...