Acer Aspire 5940g Service Guide

Chapter 121
Super-Multi Drive Module
Audio Interface
System Board Major Chips
ItemSpecification
Vendor & model 
nameHLDS GT20N LF, Toshiba TS-L633B LF, Sony AD-7580S LF, PLDS DS-8A3S LF
Performance 
Specification With CD Diskette With DVD Diskette
Transfer rate  Sustained: 3,600 kB/s (24x) max. Sustained:
11.08 Mbytes/s (8x) max.
Buffer Memory 1 MB
Interface SATA
Applicable disc 
formats DVD-ROM: 
4.7GB (Single Layer), 8.5GB (Dual Layer)
DVD-R: 
3.95GB (Ver. 1.0: read only), 4.7GB (Ver. 2.0 for...

22Chapter 1
Keyboard
Battery 
LCD 15.6 HD Audio Codec • Realtek ALC669-X for High Definition Audio Codec with 
Dolby Digital Live
Keyboard • ENE KB926 for Keyboard Controller, Battery management  Unit
Card Reader • JMB380 card reader
ItemSpecification
Keyboard controller KB926
Total number of keypads 86-/87-/91-key keyboard
Windows logo key Yes
Internal & external keyboard work 
simultaneously Ye s
ItemSpecification
6 Cell8 Cell
Vendor & model name Sanyo, Sony, Panasonic,  Samsung, Simplo Sanyo, Sony,...

Chapter 223
System Utilities
BIOS Setup Utility
The BIOS Setup Utility is a hardware configuration program built into your computer’s BIOS (Basic Input/
Output System).
Your computer is already properly configured and optimi zed, and you do not need to run this utility. However, if 
you encounter configuration problems, you may need to run Setup. Please also refer to Chapter 4 
Troubleshooting when problem arises.
To activate the BIOS Utility, press  F2 during POST (when “Press  to enter Setup” message...

24Chapter 2
Information
The Information screen displays a summary of your computer hardware information.
NOTE:  The system information is su bject to different models.
ParameterDescription
CPU Type This field shows the CP U type and speed of the system.
CPU Speed This field shows the speed of the CPU.
HDD Model Name This field shows the model name  of HDD installed on primary IDE master.
HDD Serial Number This field displays the serial number of HDD installed on primary IDE master.
ATAPI Model Name This...

Chapter 225
Main
The Main screen allows the user to set the system time and date as well as enable and disable boot option 
and recovery.
NOTE: The screen above is for your reference only. Actual values may differ.
The table below describes the parameters in this screen. Settings in  boldface are the default and suggested 
parameter settings.
ParameterDescriptionFormat/Option
System Time Sets the system time. The hours are displayed with 24- hour format. Format: HH:MM:SS 
(hour:minute:second) 
System...

26Chapter 2
Advanced
The Advanced screen allows the user to configure the various advanced BIOS options.
IMPORTANT: Making incorrect settings to item s on these pages may cause the  system to malfunction. Unless 
you have experience adjusting these items, we re commend that you leave these settings at the 
default values. If making settings to items on thes e pages causes your system to malfunction or 
prevents the system from booting,  open BIOS and choose Load Optimal Defaults in the Exit menu to 
boot...

Chapter 227
Video 
ConfigurationEnter the Video Configuration menu.  • Render Standby
• IGD—Device2, Function1
• IGD—Pre-allocat Memory
• IGD—DVMT Size
• Clock Chip Initialize
• Enabled CK SSC
• IGD—Boot Type
• IGD—LCD Panel Type
• IGD—TV
• IGD—PAVP Mode
USB Configuration Enter the USB  Configuration menu. • USB Legacy
•EHCI 1, 2
• UHCI 1 ~ 5
• Per-Port Control
• USB Port 0~7
Chipset 
Configuration Enter the Chipset Configuration menu.  • Port 80h Cycles
• DMI Link ASPM Control
• Automatic ASPM
• PCI...

28Chapter 2
Security
The Security screen contains parameters that help safeguard and protect your computer from unauthorized 
use.
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 ma y have to return your notebook computer to your 
dealer to reset it....

Chapter 229
Setting a Password
Follow these steps as you set the user or the supervisor password:
1.Use the  ↑ and  ↓ keys to highlight the Set Supervisor Password parameter and press the  Enter 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...

30Chapter 2
Changing a Password
1.Use the  ↑ and  ↓ keys to highlight the Set Supervisor Password parameter and press the  Enter key. The 
Set Password box appears.
2. Type the current password in the Enter Current Password field and press  Enter.
3. Type a password in the Enter New Password field. Retype the password in the Confirm New Password 
field.
4. Press  Enter. After setting the password, the computer se ts the User Password parameter to “Set”.
5. If desired, you can enable the Password on boot...