Acer Travelmate 4720 Service Guide

Chapter 241
Main Menu
 
ParameterDescriptionFormat/Option
System Time Set the system time following the hour-minute-second format. Format: HH:MM:SS 
(hour:minute:second) 
System Date Set the date following the weekday-month-day-year format. Format MM/DD/YYYY 
(month/day/year) 
System Memory Total size of  system memory detected during POST. 
Extended Memory Total size of extended memory during POST. 
Video Memory Total size of VGA memory.
Quiet Boot When Enabled, the BIOS splash screen is displayed...

42Chapter 2
Advanced Menu
ParameterDescriptionFormat/Option
AHCI Mode Enables or disables access to SATA connectors via the AHCI 
(Advanced Host Controller Interface) Option ROM. AHCI is an 
interface specification that allows the storage driver to enable 
advanced SATA features such as Native Command Queuing and 
hot plug. 
Enabled
Disabled
Infrared Port Enables or disables the infrared port. 
Enabled
Disabled
ASF Configuration Press Enter to configure the Alert Standard Format feature. 
Phoenix...

Chapter 243
Security Menu
 
NOTE: Refer to the “Removing a System Password” section for more information on how to remove a 
password.
ParameterDescriptionOption
Supervisor Password Is Indicates whether a supervisor password has been 
assigned. 
Clear or Set
User Password Is Indicates whether a user password has been 
assigned.
Clear or Set
Secondary MAS.Disk Status Indicates whether a hard disk drive password has 
been assigned. 
Clear or HDD Password Set
Set Supervisor Password Press Enter to configure...

44Chapter 2
Setting a System Password
1.Use the up/down keys to select a password parameter (Set Supervisor Password, Set User Password, or 
Set Secondary MAS.Disk Password), then press Enter. A Password box will appear.
2.Type a password then press Enter. 
The password may consist of up to six alphanumeric characters (A-Z, a-z, 0-9).
3.Retype the password to verify the first entry then press Enter again. 
4.Press F10.
5.Select Ye s to save the new password and close the Setup Utility. 
Changing a System...

Chapter 245
Boot Menu
This menu allows you to set the drive priority during system boot-up. The system will attempt to boot from the 
first device on the list. If the first device is not available, it will continue down the list until it reaches an available 
device. BIOS setup will display an error message if the drive(s) specified is not bootable. 
Phoenix TrustedCore(tm) Setup Utility
Main
Item Specific Help
Useorto
select a device, then
presstomoveit
up the list, or 
to move it down the
list. Press...

46Chapter 2
Exit Menu
ParameterDescription
Exit Saving Changes Save changes made and close the BIOS setup.
Exit Discarding Changes Discards changes made and close the BIOS setup.
Load Setup Defaults Loads the default settings for all BIOS setup parameters. Setup Defaults are quite 
demanding in terms of resources consumption. If you are using low-speed memory chips or 
other kinds of low-performance components and you choose to load these settings, the 
system might not function properly.
Discard Changes...

Chapter 347
This chapter contains step-by-step procedures on how to disassemble the notebook computer for 
maintenance and troubleshooting.
Disassembly Requirements
To disassemble the computer, you need the following tools:
TWrist grounding strap and conductive mat for preventing electrostatic discharge
TFlat screwdriver
TPhilips screwdriver
THex screwdriver
TPlastic flat screwdriver
TPlastic tweezers
NOTE: The screws for the different components vary in size. During the disassembly process, group the...

48Chapter 3
General Information
Pre-disassembly Instructions
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.Place the system on a flat, stable surface. 
4.Remove the battery pack.  See “Removing the Battery Pack” on page 51. 

Chapter 349
Disassembly Process
The disassembly process is divided into the following stages:
TExternal module disassembly
TMain unit disassembly
TLCD module disassembly
The flowcharts provided in the succeeding disassembly sections illustrate the entire disassembly sequence. 
Observe the order of the sequence to avoid damage to any of the hardware components. For example, if you 
want to remove the mainboard, you must first remove the keyboard, then disassemble the inside assembly 
frame in that order....

50Chapter 3
External Module Disassembly Process
External Modules Disassembly Flowchart
The flowchart below 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 
mainboard, you must first remove the keyboard, then disassemble the inside assembly frame in that order.
Screw List
ScrewPart No.
A M2 x L4 86.9A552.4R0
B M2 x L18 86.00G64.720
C M2 x L3 86.9A552.3R0
D M3 x L4...