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.