Acer Aspire 1620 Service Guide

							Chapter 242
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 may have to return your notebook computer to your 
dealer to reset it.
Setting a Password
Follow these steps as you set the user or the supervisor password:
1.Use the w andy 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” field. The password length can not exceeds 8 
alphanumeric characters (A-Z, a-z, 0-9, not case sensitive). Retype the password in the “Confirm New 
Password” field.
IMPORTANT:Be very careful when typing your password because the characters do not appear on the screen.
3.Press e.
                After setting the password, the computer sets the User 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
User Password is Shows the setting of the user password.
Clear or Set
Supervisor Password is Shows the setting of the Supervisor password
Clear or Set
Set User Password Press Enter to set the user password. When 
set, this password protects the BIOS Setup 
Utility from unauthorized access.
Set Supervisor Password Press Enter to set the supervisor password. 
When set, this password protects the BIOS 
Setup Utility from unauthorized access. 
Primary Harddisk Security This feature is available to user when 
Supervisor password is set. Password can be 
written on HDD only when Supervisor 
password or user password is set and 
password on HDD is set to enabled. 
Supervisor Password is written to HDD only 
when Supervisor password is being set. User 
password is written to HDD when both 
passwords are set. When both Supervisor and 
user password are present, both passwords 
can unlock the HDD.
Disabled or Enabled
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 
						

							43Aspire 1620
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 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 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, the computer sets the User 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. 
						

							Chapter 244
If the current password entered does not match the actual current password, the screen will show you the 
Setup Warning.
If the new password and confirm new password strings do not match, the screen will display the following 
message. 
						

							45Aspire 1620
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. 
						

							Chapter 246
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. 
						

							47Aspire 1620
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 utility 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. 
Fellow the steps below to run the Phlash.
1.Prepare a bootable diskette.
2.Copy the Phlash utilities to the bootable diskette.
3.Then boot the system from the bootable diskette. The Phlash utility has auto-execution function. 
						

							Chapter 348
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
TFlat-bladed screw driver
TPhillips screw driver
TTw e e z e r s
TPlastic Flat-bladed screw driver
THexed Screw Driver
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.
NOTE: This chapter has been revised from previous model (TravelMate 240/250). Please refer to the 
disassembling procedures instead of the images. Some of the images below contain the parts used in 
TravelMate 240/250, but not in Aspire 1620.
Chapter 3
Machine Disassembly and Replacement 
						

							49Chapter 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. 
						

							Chapter 350
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.
Start
Battery
HDD ModuleHinge Caps
HDD
LCD ModuleF*6Keyboard
Lower Case
Assembly
J*5
F*10
D*4
DIMM Cover
Memory*2
J*2
Launch Board
Modem Cover*2
*2
CPU
Second Fan
Thermal
ModuleJ*3
HDD Holder
G*2
Middle Cover
Upper Case
Assembly
Wireless LAN
AntennaTouchpad
Cover
Touchpad
Button Pad
Touchpad
Upper CaseTouchpad
Cable
Touchpad
Scroll Key
FDD Module
VGA Thermal
PlateCPU Heatsink
PlateODD Support
BracketHDD BracketODD Module
Main Board
DC BoardPCMCIA Slot
Speaker Set
ODD BracketODD
D*4 J*2
J*7 *1 F*1
J*4
D*2
*4
D*2D*4
*2
Modem BoardD*2Wireless LAN
Board
RTC Battery
*4
Second Fan
BracketJ*3 
						

							51Chapter 3
Screw List
ItemDescription
A SCREW MAC FLAT M2.5*L4 NI NYLOK 
(86.00123.630)
B SCREW M2.0*L10 NYLOK(86.9A352.100)
C SCREW M2*3 NYLON 1JMCPC-
420325(86.9A352.3R0)
D SCREW M2.5X6(86.9A353.6R0)
E SCREW M3x4 (86.9A524.4R0) 
F SCREW M2X2.0 (86.9A552.2R0)
G SCREW WAFER NYLOK NI 2ML3  (86.9A552.3R0)
H SCRW M2*4 WAFER NI  (86.9A552.4R0)
I SCRW M2.5*3 WAFER NI (86.9A553.3R0)
J SCREW M2.5*4L NI (86.9A553.4R0)
4 LCD
Cushions
E*4
LCD Bezel
Inverter
LCDL*4LCD Panel
LCD BracketsLCD Coaxial
Cable
H*8 for 14.1
H*6 for 15.0L*1
LCD Module