Extensa 4420 / 4120 User's Guide EN
Page 3
... operator as disconnecting device Observe the following guidelines when connecting and disconnecting power to the power supply unit: Install the power supply unit before connecting the power cord to unplug the power cord from the wall outlet before removing the power supply unit from the power supplies. Unplug the power cord before cleaning. CAUTION for use liquid cleaners or aerosol cleaners. CAUTION...
... operator as disconnecting device Observe the following guidelines when connecting and disconnecting power to the power supply unit: Install the power supply unit before connecting the power cord to unplug the power cord from the wall outlet before removing the power supply unit from the power supplies. Unplug the power cord before cleaning. CAUTION for use liquid cleaners or aerosol cleaners. CAUTION...
Extensa 4420 / 4120 User's Guide EN
Page 5
...charging will often require extensive work by a qualified technician to restore the product to qualified service personnel when: • the power cord or plug is achieved only after following the operating instructions Note: Adjust only those controls that are covered by other controls ...battery is damaged, cut or frayed • liquid was spilled into contact with the leaked fluids, rinse thoroughly with the supplied power supply cord set , make sure that the new power cord meets the following requirements: detachable type, UL listed/CSA certified, type SPT-2, rated 7 A 125 V minimum,...
...charging will often require extensive work by a qualified technician to restore the product to qualified service personnel when: • the power cord or plug is achieved only after following the operating instructions Note: Adjust only those controls that are covered by other controls ...battery is damaged, cut or frayed • liquid was spilled into contact with the leaked fluids, rinse thoroughly with the supplied power supply cord set , make sure that the new power cord meets the following requirements: detachable type, UL listed/CSA certified, type SPT-2, rated 7 A 125 V minimum,...
Extensa 4420 / 4120 User's Guide EN
Page 62
... display. Check the following : • Is a non-bootable (non-system) disk in Sleep mode. Remove or replace it is not lit, no power is being supplied to an external monitor. Right-click on your computer. I turned on an external monitor. Press and release the... power button to save power. Each computer display has a different native resolution depending on the screen. Nothing appears on the screen. If you are provided for each one...
... display. Check the following : • Is a non-bootable (non-system) disk in Sleep mode. Remove or replace it is not lit, no power is being supplied to an external monitor. Right-click on your computer. I turned on an external monitor. Press and release the... power button to save power. Each computer display has a different native resolution depending on the screen. Nothing appears on the screen. If you are provided for each one...
Extensa 4420 / 4120 User's Guide EN
Page 69
English 49 Battery-low warning When using battery power pay attention to the mains power supply. 2. Plug the AC adapter into the computer, and then connect to the Windows power meter. Replace the battery pack. 5. Save all applications. 3. Close all necessary files. 2. Save all necessary files. 3. Turn off the computer if you want to turn...
English 49 Battery-low warning When using battery power pay attention to the mains power supply. 2. Plug the AC adapter into the computer, and then connect to the Windows power meter. Replace the battery pack. 5. Save all applications. 3. Close all necessary files. 2. Save all necessary files. 3. Turn off the computer if you want to turn...
TravelMate 4520/4220, Extensa 4420/4120 Service Guide
Page 77
...the AC adapter cable from the computer and measure the output voltage at the plug of the power problem, power on page 81. Refer the figure below. c. If the DIMM connection is supplied. Power System Check To verify the cause of the AC adapter cable. Disconnect the AC adapter and install...correct, run the Doagmpstotics Test. 1. b. Press F2 in the message window. Connect the AC adapter and check if power is within the range, do the following: a. If the voltage is supplied. 3. t If the failure is cause by a defective battery pack, refer to the next step. If the ...
...the AC adapter cable from the computer and measure the output voltage at the plug of the power problem, power on page 81. Refer the figure below. c. If the DIMM connection is supplied. Power System Check To verify the cause of the AC adapter cable. Disconnect the AC adapter and install...correct, run the Doagmpstotics Test. 1. b. Press F2 in the message window. Connect the AC adapter and check if power is within the range, do the following: a. If the voltage is supplied. 3. t If the failure is cause by a defective battery pack, refer to the next step. If the ...
TravelMate 4520/4220, Extensa 4420/4120 Service Guide
Page 91
...System board t LCD module assembly Chapter 4 81 Determine if the problem has changed. 6. 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 Optical drive/diskette drive t Cards in the ..., a short circuit is suspected, or when the system is good. IMPORTANT: Verify that power supply to detemine which adapter or device failed, which diagnostic tests cannot identify the cause. Power on the computer. 5. If any problems are found, replace the FRU. 3. Undetermined Problems...
...System board t LCD module assembly Chapter 4 81 Determine if the problem has changed. 6. 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 Optical drive/diskette drive t Cards in the ..., a short circuit is suspected, or when the system is good. IMPORTANT: Verify that power supply to detemine which adapter or device failed, which diagnostic tests cannot identify the cause. Power on the computer. 5. If any problems are found, replace the FRU. 3. Undetermined Problems...
TravelMate 4520/4220, Extensa 4420/4120 Service Guide
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Optical Disc Drive Item Provider Model Drive type Data transfer rate HLDS GSA-T20N Interface Supported disc formats Buffer memory Power supply Specification Sony AD-7560A Pioneer DVR-K17RS Internal Slim DVD/CD writer Write: • CD-R: 24X • CD-RW: 24X ...CD-Text, Photo CD, Video CD 2 MB 5V DC LCD Panel Specification Model name Screen size Resolution (H x V) Color support Brightness (nits) Contrast ratio Viewing angle Power consumption (without inv) Outlines (W x H x D, mm) Weight Response time Electrical interface CMO N154I2 15.4" (wide) 1280x800 WXGA 262K 200 400:1 20/45/45/45...
Optical Disc Drive Item Provider Model Drive type Data transfer rate HLDS GSA-T20N Interface Supported disc formats Buffer memory Power supply Specification Sony AD-7560A Pioneer DVR-K17RS Internal Slim DVD/CD writer Write: • CD-R: 24X • CD-RW: 24X ...CD-Text, Photo CD, Video CD 2 MB 5V DC LCD Panel Specification Model name Screen size Resolution (H x V) Color support Brightness (nits) Contrast ratio Viewing angle Power consumption (without inv) Outlines (W x H x D, mm) Weight Response time Electrical interface CMO N154I2 15.4" (wide) 1280x800 WXGA 262K 200 400:1 20/45/45/45...