Acer Travelmate 7300 Service Guide

							3-8Service Guide
3.4.5  Resume On Schedule
W hen this parameter is set to Enabled, the computer resumes from suspend-to-memory mode at
the specified date and time. Enabling this option overrides the suspend-to-disk function.
The Resume Date and Resume Time parameters let you set the date and time for the resume
operation. The date and time fields take the same format as the System Date and Time parameters
in the System Configuration screen.
If you set a date and time prior to when the computer enters suspend mode, this field is
automatically disabled. A successful resume occurring from a date and time match also
automatically disables this field. 
						

							BIOS Setup Information 3-9
3.5 System Security
W hen you select System Security from the BIOS Utility main screen, a screen appears that allows
you to set security options.
Important!  If a password is currently present, the system
prompts you to input the password before entering the
System Security screen.
3.5.1  Supervisor and User Passwords
The supervisor and user passwords both prevent unauthorized access to the computer. W hen these
passwords are present, the computer prompts for the user or supervisor password during system
boot-up and resume from suspend. The supervisor password also gives full access to the BIOS
setup utility. The user password give limited access.
Important!  The supervisor password must be set prior to
setting the user password. If you enter the setup utility with
the user password, you cannot modify the supervisor
password or certain BIOS settings.
To set a password, follow these steps:
1. Select the desired password (Supervisor or User) to set or edit, and press ® or ¬. A special
password prompt resembling a key appears:
2. Enter a password of up to eight characters. (The characters do not appear on the screen as
you type them.) After typing your password, press Enter. The same password prompt
reappears:
3. Retype your password and press Enter to verify your first entry.
After you set a password, the computer sets the Supervisor Password (or User Password)
parameter to Present. The next time you boot up, resume from suspend mode, run the BIOS setup
utility, or unlock system resources, the password prompt appears and you must type the supervisor
or user password to continue.
Important!  The system continues to ask for your password
until you enter the correct password. If you forget your
password, you must reset the configuration values stored,
which requires opening the system unit. Contact your dealer
for assistance.
To remove a password, select the password you want to remove and press ¬ or ®. 
						

							3-10Service Guide
3.5.2  Diskette Drive Access Control
This parameter allows you to control the read and write functions of the floppy drive. The available
options. are: Normal, Write Protect, and Disabled. The default is Normal.
W ith this parameter set to Normal, the floppy drive functions normally. W hen the parameter is set to
W rite Protect, all write functions to the floppy drive are disabled, but you can still read from a disk in
the floppy drive. When the parameter is set to Disabled, the floppy drive is disabled.
3.5.3  Hard Disk Drive Access Control
This parameter allows you to control the read and write functions of the hard drive. The available
options. are: Normal, Write Protect, and Disabled. The default is Normal.
W ith this parameter set to Normal, the hard drive functions normally. W hen the parameter is set to
W rite Protect, all write functions to the hard drive are disabled. W hen the parameter is set to
Disabled, the hard drive is disabled.
3.5.4  Start Up Sequences
This parameter determines which drive the system boots from when you turn on the system. The
following table describes the available settings.
Table 1-2 Start Up Sequences
SettingDescription
A: then C:
(default)System boots from the diskette in floppy drive A. If the diskette is missing or a non-system
diskette, the system boots from hard disk C.
C: then A: System boots from hard disk C. If the hard disk is a non-system disk, the system boots
from floppy drive A.
A: System boots from the diskette in floppy drive A. If the diskette is missing or a non-system
disk,ette an error message appears.
C: System boots from hard disk C. If the hard disk is a non-system disk, an error message
appears.
CD-ROM then
C: then A:System boots from a CD if one is installed in the CD-ROM drive. If no CD is present, the
system boots from the hard disk C. If the hard disk is a non-system disk, then the system
boots from floppy drive A.
3.5.5  Refresh New BIOS
Warning!  Contact your dealer to upgrade your BIOS. 
						

							BIOS Setup Information 3-11
3.6  Reset To Default Settings
W hen you select the Reset To Default Settings from the BIOS Utility main screen, a dialog box
appears asking you to confirm that you want to reset all settings to their factory defaults. 
						

							&KDSWHU &KDSWHU
Disassembly and Unit Replacement
Disassembly and Unit Replacement 4-1
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:
· Wrist grounding strap and conductive mat for preventing electrostatic discharge
· Flat-bladed screwdriver
· Phillips screwdriver
· Hexagonal screwdriver
· Tweezers
· Plastic stick
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.
4.1 General Information
4.1.1  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 from the notebook by (1) press the battery compartment cover latch
and slide it toward the front of the computer, and (2) pull out the battery pack. 
						

							4-2Service Guide
Figure 4-1 Removing the Battery Pack
Removing all power sources from the system prevents accidental
short circuit during the disassembly process.
a
b
c 
						

							Disassembly and Unit Replacement 4-3
4.1.2 Connector Types
There are two kinds of connectors on the main board:
· Connectors with no locks
Unplug the cable by simply pulling out the cable from the connector.
· Connectors with locks
You can use a plastic stick to lock and unlock connectors with locks.
The cables used here are special FPC (flexible printed-circuit)
cables, which are more delicate than normal plastic-enclosed
cables.  Therefore, to prevent damage, make sure that you unlock
the connectors before pulling out the cables.  Do not force cables
out of the connectors.
CONNECTORS WITH LOCKS
· Unplugging the Cable
To unplug the cable, first unlock the connector by pulling up the two clasps on both sides of the
connector with a plastic stick.  Then carefully pull out the cable from the connector.
· Plugging the Cable
To plug the cable back, first make sure that the connector is unlocked, then plug the cable into
the connector.  W ith a plastic stick, press the two clasps on both sides of the connector to
secure the cables in place.
Unplugging
the CablePlugging
the Cable
Plugging
the Cable
Unplugging
the Cable
Figure 4-2 Using Plastic Stick on Connector With Locks 
						

							4-4Service Guide
Connectors mentioned in the following procedures are assumed to
be no-lock connectors unless specified otherwise.
4.1.3 Disassembly Sequence
The disassembly procedure described in this manual is divided into eight major sections:
· Section 4.2: Removing the module
· Section 4.3: Replacing the hard disk drive
· Section 4.4: Replacing memory
· Section 4.5: Removing the keyboard
· Section 4.6: Replacing the CPU
· Section 4.7: Removing the display
· Section 4.8: Disassembling the inside assembly frame
· Section 4.9: Disassembling the display
The following table lists the components that need to be removed during servicing.  For example, if
you want to remove the motherboard, you must first remove the keyboard, then disassemble the
inside assembly frame in that order.
Table 4-1 Guide to Disassembly Sequence
Service ItemPrerequisite
Install CPU Remove the keyboard.
Remove the keyboard Remove two speaker covers on both sides and one center hinge
cover.
Remove or replace the hard disk drive Remove the hard disk drive bay cover.
Install additional memory Remove the SIMM door.
Remove the touchpad 1. Remove the keyboard.
2. Remove the LCD display module.
3. Remove the upper unit of lower case.
Replace the LCD Remove the LCD display module.
Remove the motherboard for service
or replacement1. Remove the keyboard.
2. Remove the LCD display module.
3. Remove the lower unit of lower case. 
						

							Disassembly and Unit Replacement 4-5
The following diagram details the disassembly flow.
Figure 4-3 Disassembly Flow 
						

							4-6Service Guide
4.2  Removing the Module
If you are going to disassemble the unit, it is advisable to remove the module first before proceeding.
Follow these steps to remove the module:
1. Slide out and hold the module release button.
2. Press the module release latch and slide out the module.
Figure 4-4 Removing the Module
Module
Release
Lth
Module Release Button