Aspire 4720, 4720Z User's Guide EN
Page 5
...them away from children. Keep them in damage and will often require extensive work by a qualified technician to restore the product to replace the power cord set . Replace the battery with the same type as opening or removing covers may expose you need for service • the product does not operate normally after...: detachable type, UL listed/CSA certified, type SPT-2, rated 7 A 125 V minimum, VDE approved or its equivalent, 4.6 meters (15 feet) maximum length. Use of another battery may explode if not handled properly. Replacing the battery pack The notebook uses lithium...
...them away from children. Keep them in damage and will often require extensive work by a qualified technician to restore the product to replace the power cord set . Replace the battery with the same type as opening or removing covers may expose you need for service • the product does not operate normally after...: detachable type, UL listed/CSA certified, type SPT-2, rated 7 A 125 V minimum, VDE approved or its equivalent, 4.6 meters (15 feet) maximum length. Use of another battery may explode if not handled properly. Replacing the battery pack The notebook uses lithium...
Aspire 4720, 4720Z User's Guide EN
Page 14
... Here are some ways to take care of your battery pack: • Use only batteries of used batteries according to "Frequently asked questions" on page 40. Keep them away from children. • Dispose of the same kind as replacements. Recycle if possible. If either of the following occurs: •... please refer to local regulations. Cleaning and servicing When cleaning the computer, follow these steps: 1 Turn off before removing or replacing batteries. • Do not tamper with batteries. Do not use liquid or aerosol cleaners. Turn the power off the computer and remove the...
... Here are some ways to take care of your battery pack: • Use only batteries of used batteries according to "Frequently asked questions" on page 40. Keep them away from children. • Dispose of the same kind as replacements. Recycle if possible. If either of the following occurs: •... please refer to local regulations. Cleaning and servicing When cleaning the computer, follow these steps: 1 Turn off before removing or replacing batteries. • Do not tamper with batteries. Do not use liquid or aerosol cleaners. Turn the power off the computer and remove the...
Aspire 4720, 4720Z User's Guide EN
Page 58
... "Closed front view" Press the display toggle hotkey + to toggle the display back to an external monitor. Connect the AC adapter to recharge the battery pack. • Make sure that may be set to the computer. • If the Sleep indicator is lit, the computer is in the external...following: • Is a non-bootable (non-system) disk in Sleep mode. If pressing a key does not turn the display back on the taskbar. Remove or replace it with a system disk and press + + to the power outlet. • If it is crossed-out, click on , three things might be the cause...
... "Closed front view" Press the display toggle hotkey + to toggle the display back to an external monitor. Connect the AC adapter to recharge the battery pack. • Make sure that may be set to the computer. • If the Sleep indicator is lit, the computer is in the external...following: • Is a non-bootable (non-system) disk in Sleep mode. If pressing a key does not turn the display back on the taskbar. Remove or replace it with a system disk and press + + to the power outlet. • If it is crossed-out, click on , three things might be the cause...
Aspire 4720, 4720Z User's Guide EN
Page 65
...on the computer and resume work . Shut down the operating system to turn off the computer if you want to recharge the battery rapidly. Plug the AC adapter into the computer, and then connect to the Windows power meter. Resume work . Turn off ... 3. Close all applications. 3. You have no spare battery pack. 1. Save all necessary files. 3. English 47 Battery-low warning When using battery power pay attention to the mains power supply. 2. Data will be lost if the battery to turn off the computer. 4. Replace the battery pack. 5. The AC adapter or a power outlet is...
...on the computer and resume work . Shut down the operating system to turn off the computer if you want to recharge the battery rapidly. Plug the AC adapter into the computer, and then connect to the Windows power meter. Resume work . Turn off ... 3. Close all applications. 3. You have no spare battery pack. 1. Save all necessary files. 3. English 47 Battery-low warning When using battery power pay attention to the mains power supply. 2. Data will be lost if the battery to turn off the computer. 4. Replace the battery pack. 5. The AC adapter or a power outlet is...
Aspire 4720, 4720Z User's Guide EN
Page 92
Please consult a qualified technician or contact your local Acer dealer. English 74 Installing memory Follow these steps to access its base. 2 Remove the screws from the memory cover; The computer automatically detects and reconfigures ... cover. 3 (a) Insert the memory module diagonally into the slot, then (b) gently press it down until it clicks into place. 4 Replace the memory cover and secure it with the screw. 5 Reinstall the battery pack, and reconnect the AC adapter. 6 Turn on the computer. Then turn the computer over to install memory: 1 Turn off...
Please consult a qualified technician or contact your local Acer dealer. English 74 Installing memory Follow these steps to access its base. 2 Remove the screws from the memory cover; The computer automatically detects and reconfigures ... cover. 3 (a) Insert the memory module diagonally into the slot, then (b) gently press it down until it clicks into place. 4 Replace the memory cover and secure it with the screw. 5 Reinstall the battery pack, and reconnect the AC adapter. 6 Turn on the computer. Then turn the computer over to install memory: 1 Turn off...
Aspire 4720, G, Z, 4320 Service Guide
Page 76
... power adapter does not always indicate a defect. 3. See the following : T Replace the System board. If the power-on page 71. 70 Chapter 4 If the voltage is not correct, replace the power adapter. 2. T If the voltage is not corrected, see "Check the Battery Pack" on indicator does not light up, check the power cord...
... power adapter does not always indicate a defect. 3. See the following : T Replace the System board. If the power-on page 71. 70 Chapter 4 If the voltage is not correct, replace the power adapter. 2. T If the voltage is not corrected, see "Check the Battery Pack" on indicator does not light up, check the power cord...
Aspire 4720, G, Z, 4320 Service Guide
Page 77
... indicator still does not light up , replace the DC/DC charger board. Reconnect the touchpad cables. 2. Replace the system board. In Power Meter, confirm that has less than 7.5 Vdc after recharging, replace the battery. Power off the computer. 2. Do not replace a non-defective FRU: 1. No service... actions are correct. 3. If the battery status indicator does not light up, remove the battery pack and let it return to the touchpad pointer...
... indicator still does not light up , replace the DC/DC charger board. Reconnect the touchpad cables. 2. Replace the system board. In Power Meter, confirm that has less than 7.5 Vdc after recharging, replace the battery. Power off the computer. 2. Do not replace a non-defective FRU: 1. No service... actions are correct. 3. If the battery status indicator does not light up, remove the battery pack and let it return to the touchpad pointer...
Aspire 4720, G, Z, 4320 Service Guide
Page 79
...: nnnn DIMM System board Extended RAM Failed at xxxx:xxxx:xxxxh (R:xxxxh, W:xxxxh) Real Time Clock Error CMOS Battery Bad CMOS Checksum Error System disabled. System CMOS checksum bad - Replace and run Setup Replace RTC battery and Run BIOS Setup Utility to reconfigure system time, then reboot system. IDE Primary Channel Master Drive Error...
...: nnnn DIMM System board Extended RAM Failed at xxxx:xxxx:xxxxh (R:xxxxh, W:xxxxh) Real Time Clock Error CMOS Battery Bad CMOS Checksum Error System disabled. System CMOS checksum bad - Replace and run Setup Replace RTC battery and Run BIOS Setup Utility to reconfigure system time, then reboot system. IDE Primary Channel Master Drive Error...
Aspire 4720, G, Z, 4320 Service Guide
Page 90
... or whether the system is operating correctly. (See "Power System Check" on the computer. 5. Power-on page 69.): 1. Do not replace a non-defective FRU: T System board T LCD assembly 84 Chapter 4 Undetermined Problems The diagnostic problems does not identify which adapter or device... the failing FRU. 7. NOTE: Verify that all of the failure is inoperative. If the problem remains, replace the following devices: T Non-Acer devices T Printer, mouse, and other external devices T Battery pack T Hard disk drive T DIMM T CD-ROM/Diskette drive Module T PC Cards 4. Visually check...
... or whether the system is operating correctly. (See "Power System Check" on the computer. 5. Power-on page 69.): 1. Do not replace a non-defective FRU: T System board T LCD assembly 84 Chapter 4 Undetermined Problems The diagnostic problems does not identify which adapter or device... the failing FRU. 7. NOTE: Verify that all of the failure is inoperative. If the problem remains, replace the following devices: T Non-Acer devices T Printer, mouse, and other external devices T Battery pack T Hard disk drive T DIMM T CD-ROM/Diskette drive Module T PC Cards 4. Visually check...