Acer Aspire 1420pt Service Guide

							Chapter 231
BIOS Flash Utility
The BIOS flash memory update is required for the following conditions:
•New versions of system programs
•New features or options
•Restore a BIOS when it becomes corrupted. 
To run the BIOS flash utility:
1.Copy the BIOS flash tool and the BIOS into a USB flash disk.
2.Set the computer to boot from the USB flash disk. See “Boot” on page 29.
3.On boot-up enter at the DOS prompt:
C:\> flashit.exe v3106.fd /dc /beep:2000 
						

							32Chapter 2
DOS Flash Utility
Perform the following steps to use the DOS Flash Utility:
1.Press F2 during boot to enter the Setup Menu.
2.Select Boot Menu to modify the boot priority order, for example, if using USB HDD to Update BIOS, move 
USB HDD to position 1.
3.Execute the FLASH.BAT batch file to update BIOS.
The flash process begins as shown.
4.In flash BIOS, the message Please do not remove AC Power Source displays.
NOTE: If the AC power is not connected, the following message displays.
Plug in the AC power to continue.
5.Flash is complete when the message Flash programming complete displays. 
InsydelH20 Setup Utility                                                               Rev.   3.5               
F1
Es cHelp
ExitSelect Item
Select Menu
Change Values
Select Sub-Menu
EnterF9
F10Setup Default      
Save and Exit
     
Boot priority order : 
1. IDE0  :  TOSHIBA MK2555GSX
2. IDE1  : 
3. Network Boot  :  Atheros Boot Agent
4. USB HDD  :
5. USB CDROM  :
6. USB FDD  :
F5/F6 Main Boot
Exit Security Information
Item Specific Help
Use <  > or <  > to select
a device, then press
 to move it up the
list, or  to move it 
down the list. Press
  to escape the menu 
						

							Chapter 233
WinFlash Utility
Perform the following steps to use the WinFlash Utility:
1.Put the BIOS:ZE8_v3106.fd file under WinFlash file root.
1.Double click the WinFlash executable.
2.Click OK to begin the update. A progress screen displays.
3.When the process is complete, close all programs and applications and reboot the system. 
						

							34Chapter 2
Remove HDD/BIOS Password Utilities
This section provide you with removing HDD/BIOS method:
Remove HDD Password:
When the user keys in the wrong password three times, the system reports the following error code to user.
To unlock the HDD password, perform the following steps:
1.Press Enter to display the Select Item screen.
2.Select Enter Unlock Password and press Enter.
An Unlock Password displays.
3.Make a note of the key, 76943488 in the example.
4.Boot up the system to a removable bootable drive containing DOS and the UnlockHD.EXE program and 
open a DOS prompt. For instructions on changing boot priority see “Boot” on page 29.
5.Enter the UnlockHD.EXE command and input the key to create an unlock code. Make a note of the 
result, for example 46548274.
6.Reboot to the hard disk and wait for the error code to reappear.
7.Press Enter to display the Select Item screen.
8.Select Enter Unlock Password and press Enter.
9.Enter the unlock code generated by UnlockHD.EXE.
10.Save and exit the BIOS to complete the process. 
						

							Chapter 235
Removing BIOS Passwords:
If you key in the wrong Supervisor Password three times, System Disabled displays on the screen. See the 
image below.
To reset the BIOS password, run clnpwd.exe as follows:
1.From a DOS prompt, Execute clnpwd.exe
2.Press 1 or 2 to clean the desired password shown on the screen.
The onscreen message determines whether the function is successful or not. 
						

							36Chapter 2
Miscellaneous Utilities
Using Boot Sequence Selector
Boot Sequence Selector allows the boot order to be changes without accessing the BIOS. To use Boot 
Sequence Selector, perform the following steps:
1.Enter into DOS.
2.Execute BS.exe to display the usage screen.
3.Select the desired boot sequence by entering the corresponding sequence, for example, enter BS2 to 
change the boot sequence to HDD|CD ROM|LAN|Floppy.
Using DMITools
The DMI (Desktop Management Interface) Tool copies BIOS information to eeprom to be used in the DMI pool 
for hardware management. 
When the BIOS displays Verifying DMI pool data it is checking the table correlates with the hardware before 
sending to the operating system (Windows, etc.).
To update the DMI Pool, perform the following steps:
1.Enter into DOS.
2.Execute dmitools.exe. The following messages show dmitools usage:
IMPORTANT:The following write examples (2 to 5) require a system reboot to take effect 
						

							Chapter 237
Example 1: Read DMI Information from Memory
Input: 
dmitools /r 
Output:
Manufacturer (Type1, Offset04h): Acer
Product Name (Type1, Offset05h): Aspire one xxxxx
Serial Number (Type1, Offset07h): 01234567890123456789
UUID String (Type1, Offset08h): xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Asset Tag (Type3, Offset04h): Acer Asstag
Example 2: Write Product Name to EEPROM
Input:
dmitools /wp Acer
Example 3: Write Serial Number to EEPROM
Input:
dmitools /ws 01234567890123456789
Example 4: Write UUID to EEPROM
Input:
dmitools /wu
Example 5: Write Asset Tag to EEPROM
Input:
dmitools /wa Acer Asstag
Using the LAN MAC Utility
Perform the following steps to write MAC information to eeprom:
1.Use a text editor, for example Notepad, to edit the MAC.CFG file as shown:
•WriteData= 001122334455 
						

							38Chapter 2 
						

							Chapter 339
Machine Disassembly and Replacement
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:
• Wrist grounding strap and conductive mat for preventing electrostatic discharge
• Flat screwdriver
• Philips screwdriver
• Plastic flat screwdriver
• Plastic tweezers
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.
Related Information
The product previews seen in the disassembly procedures may not represent the final product color or 
configuration.
IMPORTANT: Cable paths and positioning may not represent the actual model. During the removal and 
replacement of components, ensure all available cable channels and clips are used and that the cables are 
replaced in the same position.
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. 
Chapter 3 
						

							40Chapter 3
4.Remove the battery pack.
Disassembly Process
The disassembly process is divided into the following sections:
• External components disassembly
• Main unit disassembly
• LCD 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, and LCD Module then disassemble the 
inside assembly frame in that order.
Main Screw List 
ScrewQuantityPart Number
M2*2.5 (silver) 8 86.TPK07.001
M2*3 7 86.ARE07.002
M2*4 26 86.W0107.003
M2*5 24 86.TG607.004