BIOS Recovery by Crisis Disk

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 if a previous BIOS flashing process fails. The system provides a function hotkey Fn Esc, for enabling BIOS Recovery process when the system is powered on during BIOS POST. To use this function, it is strongly recommended to have the AC adapter and Battery present. If this function is enabled, the...

Removing the Keyboard

Extensa 7220 Keyboard Cleaning

See Removing the Switch Cover on page 54. 2. Lift the centre of Keyboard up as shown to release the four securing clips on the Upper Cover. IMPORTANT Do not remove the Keyboard from the computer the Keyboard FFCs are still connected. 3. Turn the Keyboard over and place it on the TouchPad. 4. Disconnect the Keyboard cable by opening the FFC latch and removing the cable from the Mainboard. 5. Remove the Keyboard from the Upper Cover.

Clearing Password Check

Acer 6930g Cmos Bios Battery

Steps for Clearing BIOS Password Check If users set a BIOS Password Supervisor Password and or User Password for security reasons, the BIOS will prompt for a password during system POST or when systems enter to BIOS Setup menu. However, if it is necessary to bypass the password check, users need to short the HW Gap to clear the password by performing the following procedure 1. Power off the system, and unplug the AC and Battery from the machine. 2. Open the Hard Drive and RAM door. 3. Find the...

Removing the WLAN Module

Motherboard Wlan Acer 5550

See Removing the Lower Door on page 44. 2. Disconnect the Antenna cables from the WLAN Module. NOTE The black cable attaches to the MAIN terminal and the white cable attaches to the AUX terminal. NOTE When reattaching the antennas, ensure the cables are tucked into the chassis to prevent damage. 3. Remove the two screws securing the WLAN Module to the Mainboard

Removing the LCD Module

Acer Extensa 5635z Bluetooth

See Removing the Keyboard on page 56. 2. Turn the computer over. Remove the two screws securing the LCD Module to the Lower Cover. 3. Remove the Antenna cables from the cable channel. Ensure that the cables are free from all cable clips. Pull the Antenna cables through the Upper Cover as shown. Ensure that the Antennas are completely free from the cover. 5. Remove the Antenna from the cable channel all the way to the Hinge Well. Ensure that the cables are free from all cable clips. 6. Grasp...

Removing the RTC Battery

IMPORTANT Follow local regulations for disposal of all batteries. 1. See Removing the Lower Door on page 44. IMPORTANT Do not pry the battery out of the socket. Using force may permanently damage the battery socket. 2. Slide the RTC Battery to the right to release the securing clips in the battery socket. 3. Lift the battery clear of the socket.

Undetermined Problems

The diagnostic problems does not identify which adapter or device failed, which installed devices are incorrect, whether a short circuit is suspected, or whether the system is inoperative. Follow these procedures to isolate the failing FRU do not isolate non-defective FRU . NOTE Verify that all attached devices are supported by the computer. NOTE Verify that the power supply being used at the time of the failure is operating correctly. See Power On Issue on page 92 2. Visually check them for...