Replacing the Bluetooth Module

Acer Aspire 7720 Bluetooth Module

Connect the Bluetooth module cable to the Bluetooth module. 2. Apply adhesive and place the Bluetooth module into place pressing down firmly. 3. Connect the Bluetooth module cable to the main board. 1. Connect the LED board FCC to the mainboard. 2. Place the LED board into place ensuring the slide switches on the front are properly aligned in the lower cover slots. 4. Connect the LED board FCC to LED board. 4. Connect the LED board FCC to LED board.

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 ODER Clean Password Utility VI.00 Press 1 or 2 to clean any password shown as below i.User Password 2.Supervisor Password 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.

Mainboard CMOS Discharge

Battery Cmos Travelmate 4150

Discharging the CMOS clears all user settings. 1. Disassemble the notebook and take out the Mainboard. See Removing the Mainboard on page 71. 2. Remove the RTC battery. See Removing the RTC Battery on page 75. 3. Turn the mainboard over and short the G2 pad. 3. Turn the mainboard over and short the G2 pad. 4. Reconnect the RTC battery and reassemble the unit. 4. Reconnect the RTC battery and reassemble the unit.

Main Unit Disassembly Flowchart

IMPORTANT The keyboard is easily warped or damaged during the removal process. Take care not to use excessive force when removing to prevent damage. 1. See Removing the Battery Pack on page 45. 2. See Removing the Hard Disk Drive Module on page 47. 3. See Removing the DIMM Module on page 50. 4. See Removing the WLAN Module on page 52. 5. Using the plastic pry, press in the four latches along the top of the keyboard to release the keyboard from the cover. NOTE The keyboard will spring up...