Acer 2420 manual Undetermined Problems, Dimm

Page 90

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 System Check” on page 67.):

1.Power-off the computer.

2.Visually check them for damage. If any problems are found, replace the FRU.

3.Remove or disconnect all of the following devices:

Non-Acer devices

Printer, mouse, and other external devices

Battery pack

Hard disk drive

DIMM

CD-ROM/Diskette drive Module

PC Cards

4.Power-on the computer.

5.Determine if the problem has changed.

6.If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.

7.If the problem remains, replace the following FRU one at a time. Do not replace a non-defective FRU: System board

LCD assembly

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Chapter 4

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Contents Aspire 3620/TravelMate 2420 Series Service Guide Date Chapter Updates Revision HistoryCopyright DisclaimerConventions Screen MessagesPreface Page Table of Contents Troubleshooting Jumper and Connector LocationsFRU Field Replaceable Unit List System Specifications FeaturesChapter Human-centric design and ergonomics System Block Diagram Intel 910GMLBoard Layout Top ViewBottom View Description Your Acer Notebook tour Aspire 3620 front ViewTravelMate 2420 front view Icon DescriptionClosed Front View CommunicationsLeft View Right ViewRear Panel Bottom PanelIndicators Aspire TravelMateEasy-Launch Buttons Icon Function DescriptionLaunch key Default application Touchpad BasicsChapter Lock Keys and embedded numeric keypad Using the KeyboardDesired Access Num Lock On Num Lock Off Lock Key DescriptionWindows Keys Hot KeysKey Icon Description Hot Key Icon Function Description Euro symbol Special KeyAcer Empowering Technology Acer eDataSecurity ManagementPage Acer eLock Management Acer ePerformance Management Acer eRecovery Management Acer eSettings Management Acer ePower Management Acer ModePage Acer ePresentation Management Processor Hardware Specifications and ConfigurationsSpecification Second Level CacheLAN Interface Bluetooth InterfaceMemory Combinations Modem InterfaceWireless Module 802.11b/g optional device Hard Disk Drive InterfaceCombo Drive Interface DVD-Dual InterfaceAudio Interface USB Port Video InterfaceVideo Memory Pcmcia PortBattery System Board Major ChipsKeyboard LCD 14.1 inch LCD InverterAC Adaptor System Power Management System Utilities Bios Setup Utility Main Security Boot ExitNavigating the Bios Utility Information Parameter DescriptionMain System TimeParameter Description Format/Option Boot Exit SecurityClear or Set Setting a PasswordRemoving a Password Parameter Description OptionChanging a Password Page Boot +Hard DriveInformation Main Security Boot ExitBios Flash Utility Machine Disassembly and Replacement General Information Before You BeginDisassembly Procedure Flowchart HDDScrew List Description Part NumberRemoving the Battery Pack Removing the Memory and the HDD Module Removing the ODD Module Removing the LCD ModuleChapter Page Disassembling the Lower Case Assembly Disassembling the Main UnitPage Disassembling the Upper Case Assembly Page Disassembling the LCD Module Page Disassembling the External Modules Disassembling the HDD ModuleDisassembling the ODD Module Troubleshooting Symptoms Verified Go ToExternal CD-ROM Drive Check System Check ProceduresExternal Diskette Drive Check Keyboard or Auxiliary Input Device CheckPower System Check Memory checkCheck the Power Adapter Check the Battery Pack Touchpad CheckPower-On Self-Test Post Error Message Error Message List Index of Error MessagesError Code List Error Codes Error MessagesCPU ID No beep Error Messages FRU/Action in Sequence Phoenix Bios Beep Codes Code Beeps Post Routine DescriptionChapter Code Beeps Post Routine Description Code Beeps Indicator-Related Symptoms Index of Symptom-to-FRU Error MessageLCD-Related Symptoms Power-Related SymptomsSpeaker-Related Symptoms PCMCIA-Related SymptomsMemory-Related Symptoms Power Management-Related SymptomsPeripheral-Related Symptoms Keyboard/Touchpad-Related SymptomsModem-Related Symptoms Intermittent Problems Undetermined Problems DimmJumper and Connector Locations Top ViewBottom View FRU Field Replaceable Unit List Aspire 3620/TravelMate 2420 Exploded Diagram Aspire 3620/TravelMate 2420 FRU ListCategory Part Name and Description Acer Part No Not contain the black mylar as Image shows Middle Cover TM Upper Case TM CPU DOTHAN740 1.73GMHZ Intel Assy HDD Bracket AG1 CPU Heatsink W/SCREW W/O FAN H3M1A Belgium Keyboard 89KEY Darfon NSK AEK1F SV Hinge Pack LEFT/RIGHT RTC Battery Scrw M2*L3 Black Chapter Index

2420 specifications

The Acer 2420 is a versatile laptop that strikes a balance between performance and affordability, making it a popular choice for users ranging from students to professionals. This model is part of Acer’s Aspire series, known for its reliable build and innovative features.

One of the standout characteristics of the Acer 2420 is its design. The laptop features a sleek, lightweight chassis that is easy to carry, making it an excellent option for users who are often on the go. With a 14-inch display, it offers a compact size without compromising screen real estate, ensuring that users can enjoy decent visuals while working or streaming media.

In terms of performance, the Acer 2420 is powered by Intel’s Core i5 or AMD equivalent processors, providing robust computing capabilities that can handle everyday tasks with ease. Accompanied by 4GB or 8GB of RAM, the device multitasks efficiently, allowing users to run several applications simultaneously without glitches. Additionally, it typically comes with a 1TB HDD or SSD option, offering ample storage for files, documents, and multimedia.

The display quality of the Acer 2420 is commendable, featuring HD resolution that brings clarity and brightness to various content types, including videos and images. The laptop also incorporates Acer’s Color Intelligence technology, which dynamically adjusts the color and brightness based on the content being displayed, enhancing the overall viewing experience.

Technologically, the Acer 2420 is equipped with essential connectivity options such as USB 3.0 ports for speedy data transfer, HDMI output for external displays, and a card reader, catering to versatile connectivity needs. The laptop supports Wi-Fi and Bluetooth for seamless internet access and connectivity with other devices.

Battery life is another important aspect of the Acer 2420, with a capacity designed to last through a workday, minimizing the need for frequent recharges. This long-lasting battery, combined with energy-efficient components, makes the Acer 2420 an excellent companion for both work and leisure.

In conclusion, the Acer 2420 melds portability, solid performance, and practical features into an attractive package. For users seeking a dependable laptop that can keep up with daily tasks while also providing multimedia capabilities, the Acer 2420 is a commendable choice.
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