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Hello, My Acer Extensa 4120 Did Not Work Anymore.
When switching on, display is dark but for a half minute you can hear the cooler and the hdd working...
(Posted by wmuli 10 years ago)
Service Guide 4120
(Posted by fouad74 11 years ago)

Popular Acer Extensa 4120 Manual Pages

Extensa 4420 / 4120 User's Guide EN - Page 13

... Adobe Reader setup program first. xiii First things first We would like to use your notebook. Your guides To help you to the AcerSystem User's Guide. Follow the instructions on the screen to access it contains warranty information and the general regulations and safety notices for your Acer notebook, we have designed a set of guides: First off To turn on...
Extensa 4420 / 4120 User's Guide EN - Page 62

... AC adapter to recharge the battery pack. • Make sure that the AC adapter is properly plugged into the computer and to turn the display back on an external monitor. Nothing appears on . Then click on the power, but the computer does not start or boot up the "Display Properties" dialog box. Remove or replace it is not lit, no power...
Extensa 4420 / 4120 User's Guide EN - Page 68

...computer on AC power while your AC adapter and battery. You can continue to a mains power outlet. The recommended temperature is correctly installed in the battery bay. However, charging the battery with a fully charged battery. Checking the battery level The Windows power meter indicates the current battery level. English 48 To remove a battery pack: 1 Slide the battery release latch...
Extensa 4420 / 4120 User's Guide EN - Page 69

... system to the Windows power meter. Save all necessary files. 3. Save all necessary files. 2. An extra fully charged battery pack is unavailable. Close all necessary files. 2. You have no spare battery pack. 1. Plug the AC adapter into the computer, and then connect to turn off the computer. Resume work . Replace the battery pack. 5. Save all applications. 3. Shut down the...
Extensa 4420 / 4120 User's Guide EN - Page 71

... longer, or if your battery is not fully charged, you may want to bring anything with you have removed all media and compact disks from your computer in Sleep mode for a period of the computer. Taking the computer home When you : • AC adapter and power cord • The printed User's Guide What to take the...
TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 8

... Troubleshooting 65 Chapter 4 65 System Check Procedures 66 External Diskette Drive Check 66 External CD-ROM Drive Check 66 Keyboard or Auxiliary Input Device Check 66 Memory Check 67 Power System Check 67 Touchpad Check 68 POST Error Indicators 69 POST Error Message 69 POST Beep Codes 72 Index of Symptom-to-FRU Error Message 77 Intermittent Problems 80 Undetermined Problems...
TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 13

... with FingerLaunch, FingerNav and PBA (Pre-Boot Authentication) support provides enhanced security Status indicators T Left edge: HDD activity, Num Lock, and Caps Lock T Front edge: power status, battery charge; T Data security t Acer Bio-Protection solution provides network and data security by letting you secure the notebook to a class driver architecture for a light-weight and reliable...
TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 31

... error code for unlock hard disk. 1. Type the following command: A\> unlock6 XXXXX 00 3. Write down the generated master password. 6. Reboot the computer. 7. In the HDD password prompt, type the master password generated in a DOS environment. 2. To clear a lost HDD password: It uses on the computer and press F2 during bootup to clear all system passwords. 8. Reinstall the memory...
TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 79

... during POST, an error message describing the problem appears onscreen. CPU BIOS Update Code Mismatch 2. Battery Critical Low In this situation BIOS will shut down the system, no message will show . Thermal Critical High In this situation BIOS will issue four short beeps, then shut down the system, no message will be replaced when servicing a computer. POST Error Indicators When POST...
TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 80

... Replace the RTC battery, then access the Setup Utility to reconfigure the system time settings. RTC battery Run the Setup Utility to reconfigure the system time setttings. Refer to the "External Diskette Drive Check" section on page 66. Unlock key switch Monitor type does not match CMOS - Hard disk drive System board Refer to the "Keyboard or Auxiliary Input Device...
TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 85

...Enter SETUP Clear Boot flag Check for errors POST done-prepare to boot operating system One short beep before boot Terminate QuietBoot (optional) Check password (optional) Prepare Boot ...recovery boot Checksum BIOS ROM Go to BIOS Set Huge Segment Initialize Multi Processor Initialize OEM special code Initialize PIC and DMA Initialize Memory type Initialize Memory size Shadow Boot Block System memory...
TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 90

... board in loop mode at least ten times. 2. If any FRU. 3. Rerun the test to do the following: 1. When analyzing an intermittent problem, do with a hardware defect, such as cosmic radiation, electrostatic discharge, or software errors. FRU replacement should be caused by a variety of reasons that have nothing to verify that there are no...
TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 129

... Specification Winbond WPC8768L 88-/89-/93-key keyboard with international language support T Embedded numeric keypad T Inverted "T" cursor keys, 12 function keys, Windows® key, independent US and Euro dollar sign keys, and hotkey controls T Acer MediaTouch keys: play/pause, stop, previous, next, and record keys T Easy-launch keys: WLAN, Internet, email, Bluetooth, Acer Empowering, and Acer...
TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 132

Hard Disk Drive Specification Provider Model Part number Formatted capacity Number of disks Number of data heads Interface Seek time (average) Rotational speed Data transfer rate Internal Buffer to Host Buffer Dimensions (mm) Height Width Depth Weight Allowable ...
TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 140

...codes 72 error messages 69 power Acer QuicCharge 3 battery pack 9 button 5 DC-in jack 8 disconnecting 28 indicator 10 power management 3 power management specification 125 power board part number 90, 99 power-on password 18 Power-On Self Test, see POST 13 processor part number 97, 106 power management 125 removing 40 socket location 85 productivity keys lock 12 presentation 12 sync 12 Q Quiet Boot...

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We have the following 2 documents available for the Acer Extensa 4120:
  • TravelMate 4520/4220, Extensa 4420/4120 Service Guide
  • Extensa 4420 / 4120 User's Guide EN

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