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Acer Aspire 5942 Service Guide

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    							Chapter 239
    Using the ICW50/ICY70 LAN MAC Utility
    You can use the MAC.BAT utility to write the MAC.CFG file to the EEPROM under DOS mode.
    1.Use a text editor (for example: Notepad) to open the MAC.CFG file. You can see the MAC.CFG contents 
    as below:
    2.In DOS mode, run the MAC.BAT file to write MAC values to eeprom. WriteData = ‘001122334455 MAC value
    StartAddr=7A MAC address
    WriteLeng=6 MAC value length
    KeepByte=0 don’t care 
    						
    							Chapter 341
    Machine Disassembly and Replacement
    IMPORTANT: The outside housing and color may vary from the mass produced model.
    This chapter contains step-by-step procedures on how to disassemble the notebook computer for 
    maintenance and troubleshooting.
    Disassembly Requirements
    To disassemble the computer, you need the following tools:
    •Wrist grounding strap and conductive mat for preventing electrostatic discharge
    •Flat screwdriver
    •Philips screwdriver
    •Plastic flat screwdriver
    •Plastic tweezers
    NOTE: The screws for the different components vary in size. During the disassembly process, group the 
    screws with the corresponding components to avoid mismatch when putting back the components.
    IMPORTANT: Various images depict the use of a regular metal screwdriver, however, a plastic screwdriver is 
    advised when disassembling parts near or around the motherboard and to prevent scratching of the computer 
    surface.
    Chapter 3 
    						
    							42Chapter 3
    General Information
    Pre-disassembly Instructions
    Before proceeding with the disassembly procedure, make sure that you do the following:
    1.Turn off the power to the system and all peripherals.
    2.Unplug the AC adapter and all power and signal cables from the system. 
    3.Place the system on a flat, stable surface. 
    4.Remove the battery pack.
    Disassembly Process
    The disassembly process is divided into the following stages:
    •External module disassembly
    •Main unit disassembly
    •LCD module disassembly
    The flowcharts provided in the succeeding disassembly sections illustrate the entire disassembly sequence. 
    Observe the order of the sequence to avoid damage to any of the hardware components. For example, if you 
    want to remove the main board, you must first remove the keyboard, then disassemble the inside assembly 
    frame in that order.
    Main Screw List 
    ScrewQuantityPart Number
    SCREW M2.5*3 23 86.PH702.001
    SCREW M2*3 8 86.PH702.002
    SCREW M2.5*3 23 86.PH702.003
    SCREW M3*3 4 86.PH702.004
    SCREW M2.5*5 12 86.PH702.005
    SCREW M2.5*8 18 86.PH702.006 
    						
    							Chapter 343
    External Module Disassembly Process
    IMPORTANT: The outside housing and color may vary from the mass produced model.
    External Modules Disassembly Flowchart
    The flowchart below gives you a graphic representation on the entire disassembly sequence and instructs you 
    on the components that need to be removed during servicing. For example, if you want to remove the main 
    board, you must first remove the keyboard, then disassemble the inside assembly frame in that order.
    NOTE: Items enclosed with broken lines (— - - —) are optional and may not be present.
    Screw List
    StepScrewQuantityPart No.
    ODD M2.5*5 1 86.PH702.005
    M2*3 2 86.PH702.002
    HDD M3*3 4 86.PH702.004
    TV Tuner 
    (optional)M2*3 2 86.PH702.002
    WLAN Module M2*3 2 86.PH702.002
    Disconnect pow er
    and signal cables
    from system
    Rem ove
    Battery
    Turn off system
    and peripherals
    pow er
    Rem ove
    DIMMs
    Rem ove
    WLAN
    Rem ove
    HDDRem ove
    ODD
    Rem ove
    Lower CoversRem ove
    Dummy Cards
    Rem ove
    TV Tu ner 
    						
    							44Chapter 3
    Removing the Battery Pack
    1.Turn the computer over. 
    2.Slide the battery lock to the unlocked position.
    3.Slide and hold the battery release latch to the release position (1), then lift out the battery pack from the main 
    unit (2).
    12 
    						
    							Chapter 345
    Removing the Express Dummy Card
    1.Push the Express dummy card all the way in to eject it.
    2.Pull the card out from the slot. 
    						
    							46Chapter 3
    Removing the SD Dummy Card
    1.Push the SD dummy card all the way in to eject it.
    2.Pull the card out from the slot. 
    						
    							Chapter 347
    Removing the Lower Covers
    1.See “Removing the Battery Pack” on page 44.
    2.Loosen the four captive screws in the Memory/HDD and WLAN covers.
       
    3.Carefully open the Memory/HDD cover. 
    4.Carefully open the WLAN cover. 
    Memory/
    HDD 
    Cover WLAN 
    Cover 
    						
    							48Chapter 3
    Removing the Optical Drive Module
    1.See “Removing the Lower Covers” on page 47.
    2.Remove the single screw securing the ODD module.
    3.Insert a suitable object in to the Lower Cover to push the ODD Module clear of the casing.
    4.Pull the ODD Module out of the chassis.
    StepSizeQuantityScrew Type
    ODD Module M2.5*5 1 
    						
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