Acer Aspire 5940g Service Guide

							Chapter 5161
LS-5013P Media Board
                  
ItemDescriptionItemDescription
LED1 HOLD LED LED5 FWD LED
LED2 NEXT LED LED6 STOP LED
LED3 PREVIOUS LED LED7 PLAY/PAUSE LED
LED4 REW LED LED8 MUTE LED 
						

							162Chapter 5
LS-5014P VR Board
ItemDescription
SW1 VR SWITCH 
						

							Chapter 5163
LS-5015P Finger printer Board
ItemDescription
U2 LTT-SS801U-13_LGA28 
						

							164Chapter 5
LS-5016P USB Board
                 
ItemDescriptionItemDescription
JP1 USB cable Connector JP3 USB Connector
JP2 RF Connector ANT1 RF cable Connector 
						

							Chapter 5165
LS-5017P IO Board
            
ItemDescriptionItemDescription
JP1 Board to board Conn J1 1394 Connector
JMINI1 Mini card Connector JREAD1 7in1 card reader Conn
JMINI2 Mini card Connector 
						

							166Chapter 5
LS-5018P POWER SAVING Board
              
ItemDescription
JP1 Power saving cable connector
SW1 Power saving button
LED1 Power saving LED 
						

							Chapter 5167
LS-5019P Touch pad button Board
ItemDescription
SW1 T/P left button
SW2 T/P right button
JP1 FP FFC Connector 
						

							168Chapter 5
   Clearing Password Check and BIOS Recovery
This section provide you the standard operating proce dures of clearing password and BIOS recovery for 
Aspire 5940G Series. Aspire 5940G Series provides  one Hardware Open Gap on main board for clearing 
password check, and one Hotkey for enabling BIOS Recovery.
Clearing Password Check
Hardware Open Gap Description
Steps for Clearing BIOS Password Check
If users set BIOS Password (Supervisor Password and/or  User Password) for a security reason, BIOS will ask 
the password during systems POST or when systems enter to BIOS Setup menu. However, once it is 
necessary to bypass the password check, users need to short the HW Gap to clear the password by the 
following steps:
• Power Off the system, and remove HDD,  AC and Battery from the machine.
• Open the back cover of the machine, a nd find out the HW Gap on M/B as picture.
• Use an electric conductivity tool to short the two points of the HW Gap.
• Plug in AC, keep the short condition on the HW  Gap, and press Power Button to power on the 
system till BIOS POST finish. Then re move the tool from the HW Gap.
• Restart system. Press F2 key  to enter BIOS Setup menu.
• If there is no Password request, BIOS Password is  cleared. Otherwise, please follow the steps and 
try again.
NOTE:  The steps are only for clearing BIOS Password  (Supervisor Password and User Password).
 ITEMDESCRIPTION
CLRP2  Clear CMOS Jumper
CLRP3 Clear CMOS Jumper 
						

							Chapter 5169
BIOS Recovery by Crisis Disk
BIOS Recovery Boot Block:
BIOS Recovery Boot Block is a special block of BIOS. It is used to boot up the system with minimum BIOS 
initialization. Users can enable this feature to restore the BIOS firmware to a successful one once the previous 
BIOS flashing process failed.
BIOS Recovery Hotkey:
The system provides a function hotkey:  Fn+Esc, for enable BIOS Recovery  process when system is powered 
on during BIOS POST. To use this function, it is st rongly recommended to have the AC adapter and Battery 
present. If this function is enabled,  the system will force the BIOS to enter a special BIOS block, called Boot 
Block.
Steps for BIOS Recovery by Crisis Disk:
Before doing this, a Crisis Diskette should be prepared ready in hand. The Crisis Diskette could be made by 
executing the Crisis Disk program in  another system with Windows 7 OS.
Follow the steps below:
1. Plug in the USB disk.
2. Launch the  wincris.exe  program to create a USB Crisis Disk. Click  Start to initiate the process.
3. Select the  Quick Format  option to format the disk and click  Start. Follow the instructions on the screen to 
create the disk. 
4. Copy the  KAYF0X64.fd  BIOS file into USB flash disk root directory.
NOTE:  Do not place any other *.fd file in the USB flash disk root directory.
To use the Crisis USB key, do the following:
1. Plug USB storage into USB port.
2. Press  Fn + ESC  button then plug in AC power.
The Power button flashes orange once.
3. Press  Power  button to initiate system CRISIS mode.
When CRISIS is complete, the system  auto restarts with a workable BIOS. 
4. Update the latest version BIOS for this machine by regular BIOS flashing process. 
						

							170Chapter 5