Acer Travelmate 250 Service Guide

Chapter 242
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...

43Chapter 2
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. 

Chapter 244
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. 

45Chapter 2
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. 

Chapter 246
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...

47Chapter 2 

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...

49TravelMate 240/ 250
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 Module*6Keyboard
Lower Case
Assembly
*3
*3
*11
*4
Dimm Cover
Memory*2
*2
Launch Board...

51TravelMate 240/ 250
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
*4
LCD Bezel
Inverter
LCD*4LCD Panel
LCD BracketsLCD Coaxial
Cable...