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Apple macbook 13 inch aluminum late 2008 User Manual

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    							MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 51 2010-06-15
    Noise / Hum / Vibration
    Unlikely cause: RAM, display assembly, top case, camera, microphone, battery
    Quick Check
    SymptomQuick Check
    Noise / Hum / Vibration
    Computer or AC adapter emits a 
    noise or vibration.
    1. Verify and reproduce the source of the noise from 
    the computer / adapter with the customer.
    2.  If the AC adapter is the source of the noise 
    disconnect and try a known-good adapter.  ( a 
    small amount of hum or vibration is normal with 
    AC adapters ).
    Deep Dive
    CheckResultActionCode
    1. Use of a known-good AC 
    adapter eliminates the noise/
    vibration.
    YesReplace AC adapter.P04
    NoGo to step 2
    2.  Verify if the noise is heard 
    through the speakers and / or 
    headphones.
    YesGo to step 3
    NoGo to step 4
    3. Disconnect any peripheral 
    devices, cards, or cables 
    attached to the unit. Verify the 
    noise is gone.
    YesCheck for possible ground 
    loop.
    NoGo to step 6
    4.  Locate the source of the noise.  
    Is the noise from an optical 
    drive?
    YesCheck with a different media 
    disc. Possible issue with disc 
    label or out of balance media. 
    If not related to media, and 
    noise is above normal level, 
    replace optical drive.
    J04
    NoGo to step 5
    5. Is the noise from the hard 
    drive?
    YesDrives normally make noise 
    when starting up or when the 
    heads move. Replace drive if 
    noise is above normal levels.
    H06
    NoGo to step 6   
    						
    							MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 52 2010-06-15
    6. Is the noise coming from the 
    fan?
    YesThe fan(s) are generally 
    running in a slow mode, 
    but may accelerated when 
    intensive processing is 
    required (calculation, 3D 
    gaming, or screen saver 
    animation). If still beyond 
    expected sound level, check 
    for interference of fan with 
    other mechanical element of 
    system (foam, bracket, shield) 
    before replacing a noisy fan.
     
     
     
     
    X03
    NoGo to step 7.P04
    7. Noise may be related to EMI 
    foam gasket shorting some 
    pads on logic board or some 
    pins from LVDS connector. 
    Follow Take Apart instructions 
    to remove EMI foam gasket 
    from LVDS cable and retest. 
    Verify if noise is gone when 
    operating without foam 
    gasket.
    YesIssue solved. Replace EMI 
    foam gasket so that it covers 
    connector frame and does 
    not touch any part of logic 
    board or connector pins. 
    NoGo to step 8
    8.  Noise may be related to 
    interference from electrical 
    devices operating near the 
    computer, or on the same AC 
    power source.  Verify if noise 
    is gone when operating in a 
    different location on a different 
    AC circuit.
    YesPerhaps operating the unit 
    with a surge suppressor will 
    eliminate or reduce the noise.  
    Change location of use or 
    limit use of other device that 
    is inducing the noise.
    NoReplace logic board.M99  
    						
    							MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 53 2010-06-15
    Burnt Smell / Odor
    Unlikely cause: Enclosure
    Quick Check
    SymptomQuick Check
    Burnt Smell / Odor
    Computer or power adapter emits 
    an odor or smell of smoke.
    1. Disconnect the battery and AC adapter from the 
    computer.
    2.  Attempt to identify the source of the odor. Visual 
    clues are component damaged like capacitor chip 
    popped or burn marks. 
    3. Check AirPort Card cable orientation.
    Deep Dive
    CheckResultActionCode
    1. Has the source of the odor 
    been identified.
    YesReplace the affected part.P08
    NoGo to step 2
    2.  Are any burn marks visible on 
    components?  
    YesReplace the affected part.P08
    NoGo to step 3
    3. Refer to Liquid Submersion 
    Indicators. Are any of the spill 
    sensors red?
    YesRefer to Knowledge Base 
    article TS2274 “MacBook 
    (Early 2008) and later: Liquid 
    submersion indicators (LSI).”
    Go to step 4  
    						
    							MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Startup and Power Issues 54 2010-06-15
    4. Is the computer operating 
    normally?
    YesThis could be related to 
    normal operation. Refer to 
    Knowledge Base: 24947 
    Odors may be present short-
    term.
    NoPlease refer to best related 
    troubleshooting section. If 
    after inspecting the unit you 
    feel there is a possible safety 
    issue with the computer or 
    AC adapter, please notify 
    Apple.  
    Battery Leaking or Swollen
    Quick Check
    SymptomQuick Check
    Battery Leaking or Swollen
    • Computer wobbles
    • Trackpad button does not work
    • Battery pack case has opened.
    • Access door will not close
    1. Check if the battery is covered under a repair 
    extension program. Reference: MacBook, 
    MacBook Pro (15-inch) or MacBook Pro (17-inch) 
    with swollen battery article (Knowledge Base 
    TS2358).
    2.  Use the “Portable Computer Battery Screening 
    Process for Apple Service Providers” (Knowledge 
    Base CP165) and use “Battery pack is visibly 
    deformed” case under section 2E. Use symptom 
    code P13.
    3. Check locking lever mechanism.
    Uncategorized Symptom
    Quick Check
    SymptomQuick Check
    Uncategorized Symptom
    Unable to locate appropriate 
    symptom code
    Verify whether existing symptom code applies 
    to  the issue reported by the customer. If not, 
    document reported symptom and send feedback 
    to [email protected] stating that a suitable 
    symptom code could not be found.  
    						
    							MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 55 2010-06-15
    Communications
    Ethernet Port/Device Issue
    Unlikely cause:  power adapter, battery, speakers, optical drive, hard drive, fan, camera, 
    microphone, top case, display assembly, AirPort card
    Quick Check
    SymptomQuick Check
    Ethernet Port/Device Issue
    • No Ethernet device present
    • Unable to access network 
    resources
    • Ethernet device shows no 
    connection
    • Ethernet device unable to get 
    an IP address
    • Slow network performance
    1. Check the network cable for damage, try a 
    known good Ethernet cable – CAT5 or better 
    recommended for 100Mbps+ connections.
    2.  Check Ethernet ports on Mac and wall/switch for 
    dust, debris, damage or bent pins. 
    3. Ensure distance from networking infrastructure is 
    less than 300 feet / 105 meters. 
    4.  Verify port, cable and network hardware with a 
    known good system. Isolate firewall, MAC address 
    filtering or hardware access control devices.
    5. Check system logs. Isolate OS by starting up from 
    original install media (10.5.x) or compatible known 
    good OS.
    Deep Dive
    CheckResultActionCode
    1. Visually inspect Ethernet 
    connector to ensure all pins 
    will make physical contact with 
    CAT5 network cable.
    YesEthernet interface contacts 
    are good. Go to step 2.
    NoPins are damaged or bent flat, 
    replace logic board. 
    M10
    2.  Isolate OS by booting from 
    original install media. Verify 
    Network Link status active by 
    using Network Utility on install 
    DVD.   If the Ethernet interface 
    (en0) Link Status is inactive, 
    recheck physical connect and 
    link activity indicator on hub/
    switch.
    YesEthernet interface (en0) Link 
    Status is active, go to step 3.
    NoIf connection is OK on known-
    good system, replace logic 
    board. 
    M10  
    						
    							MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 56 2010-06-15
    3. Verify if IP address is listed 
    for the Ethernet interface in 
    System Preferences: Network.   
    Connect computer to network 
    with known-good DHCP IP 
    allocation, ensuring static 
    DHCP maps or filtering is not 
    preventing address allocation. 
    Note: DHCP allocation may not 
    be instantaneous depending 
    on network.  Retest.
    YesGo to step 4.
    NoIf connection is OK on known-
    good system, replace logic 
    board. 
    M10
    4.  Verify connection by using 
    Network Utility to ping another 
    connected computer on the 
    same subnet.  Ensure the 
    target computer’s IP address is 
    valid, on the same subnet and 
    powered on. Ensure no MAC 
    address filtering or hardware 
    access control devices are 
    present. Use a simple hub/
    switch environment.
    YesGo to step 5
    No If the symptoms do not 
    change, replace the logic 
    board.
    M10
    5. Verify Ethernet performance 
    and reliability by starting up 
    from a known-good OS install, 
    and downloading a large file 
    from a web site or file server. 
    YesIf there is no performance or 
    connectivity issue isolated 
    solely to the system under 
    test, the problem may be the 
    network environment. No 
    repair is necessary. 
    NoIf there are connection 
    dropouts or poor 
    performance not seen on 
    a known-good test system, 
    replace the logic board.
    M10  
    						
    							MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 57 2010-06-15
    AirPort/Bluetooth: Defective Wireless Devices
    Unlikely cause:  power adapter, battery, speakers, optical drive, hard drive, fan, camera, 
    microphone, top case
    Caution: When testing an AirPort card connection, wait at least 5 seconds after shutdown 
    before touching the camera cable connection to the logic board. Waiting less than that could 
    damage the AirPort card.
    Quick Check
    SymptomQuick Check
    AirPort or Bluetooth:  Defective 
    Wireless Devices
    • Unable to join networks or pair 
    devices
    • Card not available or 
    recognized
    • Intermittent device or 
    connection dropouts
    1. Open System Preferences and make sure AirPort 
    or Bluetooth is turned on and (for AirPort) that a 
    network is selected.
    2.  Check that base station is not using unsupported 
    connection and encryption protocols.
    3. Check for nearby interference sources such as 
    microwave ovens or cordless phones (Knowledge 
    Base HT1365)
    4.  Check the number of users trying to use AirPort in 
    the area for possible network congestion.
    5. Isolate OS by booting from original install 
    media (10.5.x).  Attempt to connect to base 
    station (AirPort) or pair with wireless keyboard 
    (Bluetooth).
    6.  Reset PRAM.
    Deep Dive
    CheckResultActionCode
    1. Open System Profiler, check to 
    see if AirPort or Bluetooth is 
    recognized.  Ensure software 
    and firmware updates for 
    AirPort and Bluetooth have 
    been applied.
    Yes(AirPort) Ensure MAC address 
    filtering is not enabled on the 
    base station. 
     
    (Bluetooth) Ensure 
    target devices are set to 
    discoverable.
    NoIf card is not detected or 
    software updates do not 
    resolve issue, go to step 2.  
    						
    							MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 58 2010-06-15
    2. Run Clamshell Service 
    Diagnostic utility and check 
    for all devices presence. If not 
    found, reseat the camera cable 
    connection to the logic board. 
    YesLoose logic board connection.N04
    NoAirPort issue, go to step 3,  
    Bluetooth issue go to step 7.
    3. (AirPort) Verify the antenna 
    connections to the AirPort 
    card are not reversed or loose. 
    Reseat antenna and I/O cable 
    connections.
    YesLoose connections or crossed 
    antenna.
    N04
    NoIf the connectors are secure, 
    antenna connections not 
    reversed and show no signs 
    of damage or wear, go to step 
    4.
    4.  (AirPort) Try a known-good 
    AirPort antenna.
    YesReplace AirPort antenna.N14
    NoContinue to use known-good 
    antenna, go to step 5.
    5. (AirPort) Try a known-good 
    AirPort card.
    YesReplace AirPort card.N12
    NoGo to step 6.
    6.  (AirPort) Try a known-good 
    display assembly if available. 
    YesReplace display assembly.L16
    NoReplace logic board.M11
    7. (Bluetooth) Enable Bluetooth 
    and try a known good display 
    assembly if available. Bluetooth 
    circuitry in the clamshell is not 
    accessible.  
    YesReplace display assembly.L16
    NoReplace logic board.M11  
    						
    							MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 59 2010-06-15
    No/Poor Wireless Signal
    Unlikely cause:  power adapter, battery, speakers, optical drive, hard drive, fan, camera, 
    microphone, top case
    Caution: When testing an AirPort card connection, wait at least 5 seconds after shutdown 
    before touching the camera cable connection to the logic board. Waiting less than that could 
    damage the AirPort card.
    Quick Check
    SymptomQuick Check
    No/Poor Wireless Signal
    • Unable to find networks
    • Intermittent connection 
    dropouts
    • Slow transfer speeds
    1. Check for nearby interference sources in the 
    2.4/5GHz range such as microwave ovens and 
    cordless phones (Knowledge Base HT1365).
    2.  Check that computer is within base station range 
    – move closer to base station.
    3. Base station checks: 
    a.  Base station is not set to low-power 
    transmission mode 
    b.  Base station is not using unsupported 
    connection and encryption protocols 
    c.  Check for possible Wi-Fi channel overlap 
    (nearby base stations using adjacent channel)
    4. Isolate OS by booting from original install media 
    (10.5.x). Attempt to connect to base station.
    Deep Dive
    CheckResultActionCode
    1. Open System Profiler, check to 
    see if AirPort card is recognized 
    under Network: AirPort Card.
    YesUse Software Update to make 
    sure all AirPort software and 
    firmware updates have been 
    applied. Ensure base station 
    is not using MAC address 
    filtering or creating a hidden 
    network.
    NoIf card is not detected, go 
    to M11 - AirPort/Bluetooth - 
    Defective wireless devices.  
    						
    							MacBook (13-inch, Aluminum, Late 2008) Symptom Charts — Communications 60 2010-06-15
    2. Run Clamshell Service 
    Diagnostic utility and check 
    for all devices presence. If not 
    found, reseat the camera cable 
    connection to the logic board.
    YesLoose logic board connectionN04
    NoGo to step 3.
    3. Verify the antenna connections 
    to the AirPort card are not 
    reversed or loose. Reseat 
    antenna and I/O cable 
    connections.
    YesLoose connections or crossed 
    antenna
    N04
    NoIf the connectors are secure, 
    antenna connections not 
    reversed and show no signs 
    of damage or wear, go to step 
    4.
    4.  Try a known-good AirPort 
    antenna.
    YesReplace AirPort antenna.N14
    NoContinue to use known good 
    antenna, go to step 5.
    5. Try a known-good AirPort card.YesReplace AirPort card.N12
    NoContinue to use known-good 
    antenna & card; go to step 6.
    6.  Try a known-good display 
    assembly if available. 
    YesReplace display assembly.L16
    NoReplace logic board.M11
    Wireless Input Device Loses Connection
    Unlikely cause:  display assembly, speaker assembly, optical drive, hard drive
    Caution: When testing an AirPort card connection, wait at least 5 seconds after shutdown 
    before touching the camera cable connection to the logic board. Waiting less than that could 
    damage the AirPort card.
    Quick Check
    SymptomQuick Check
    Wireless Input Device Loses 
    Connection
    Check Bluetooth input device has fully charged 
    batteries.  
    						
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