Disconnecting the Bluetooth cable | Lenovo 2756D7U, 2697 specs

1.Turn off the computer and disconnect all power cords from electrical outlets.

2.Remove the computer cover. See “Removing the computer cover” on page 34.

3.If your computer comes with a WiFi card module that supports the Bluetooth function, disconnect the Bluetooth cable from the WiFi adapter card.

Figure 65. Disconnecting the Bluetooth cable

Note: The Bluetooth cable connects the Bluetooth connector on the WiFi adapter card to the front USB connector on the system board to support the Bluetooth function.

76ThinkCentre User Guide

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Lenovo 2756D7U, 2697 manual Disconnecting the Bluetooth cable

Contents

ThinkCentre User Guide Third Edition May Copyright Lenovo Contents Recovery information Appendix A. Notices 131 Iv ThinkCentre User Guide Service and upgrades Important safety informationStatic electricity prevention Power cords and power adapters Extension cords and related devices External devices Plugs and outletsHeat and product ventilation Modem safety information Operating environment Cleaning and maintenance Power supply statementLaser compliance statement ThinkCentre User Guide Features Product overview System management features Input/Output I/O features Power supplySecurity features Expansion Preinstalled software programs Preinstalled operating system Software overview SpecificationsSoftware provided by Lenovo Product Recovery Lenovo ThinkVantage ToolsLenovo Welcome Fingerprint Software ThinkVantage Password Manager ThinkVantage Power ManagerThinkVantage Rescue and Recovery ThinkVantage System Update Lenovo Solution Center Adobe Reader Antivirus softwareLocations View Manager Front connector, control, and indicator locations Locating connectors on the rear of your computer Connector Description That use a DisplayPort connector Locating components Locating parts on the system board System board part locations System board part locations Locating internal drives Drive bay locations Machine type and model label Machine type and model label Using your computer Frequently asked questionsUsing the keyboard Using Windows shortcut keys Using the blue ThinkVantage button Using a fingerprint readerUsing the wheel mouse Adjusting audio Setting the volume from the desktop Setting the volume from Control PanelUsing CDs and DVDs Adding the volume icon to the taskbar Playing a CD or DVD Handling and storing CD and DVD mediaRecording a CD or DVD Using your computer ThinkCentre User Guide Accessibility and comfort You and your computerArranging your workspace Comfort Air circulation Glare and lightingElectrical outlets and cable lengths Registering your computer Voltage-selection switchMoving your computer to another country or region Replacement power cords Security features Security Installing a padlock Locking the computer cover Installing a cable lock Attaching a cable lock Bios passwords Using passwordsAttaching an integrated cable lock Windows passwords Configuring the fingerprint readerUsing and understanding firewalls Protecting data against viruses ThinkCentre User Guide Installing or replacing hardware Installing or replacing hardwareInstalling external options Handling static-sensitive devices Removing the computer cover Removing the computer cover Installing or replacing a PCI card Removing and reinstalling the front bezelWhat to do next Opening the PCI card latch Removing a PCI card Installing or replacing a memory module Installing a PCI card Udimm Dimm Installing or replacing the optical drive Opening the retaining clips Removing the optical drive Installing or replacing the card reader Installing the optical drive Installing the card reader Removing the card reader retainer Installing the card reader Replacing the card reader Removing the card reader Replacing the battery Replacing the power supply assembly Removing the old battery ThinkCentre User Guide Replacing the heat sink and fan assembly Removing the screws for the power supply assembly Removing the heat sink and fan assembly Replacing the microprocessor Accessing the microprocessor Installing the microprocessor Installing the solid state drive Installing the solid state drive into the storage converter Installing or replacing the mSATA solid state drive Installing the mSATA solid state drive ThinkCentre User Guide Installing the mSATA solid state drive Replacing the mSATA solid state drive Removing the mSATA solid state drive storage converter Removing the mSATA solid state drive What to do next Replacing the primary hard disk drive Removing the primary hard disk drive Installing the hard disk drive into the bracket Replacing the secondary hard disk drive Removing the secondary hard disk drive Installing the secondary hard disk drive Replacing the front fan assembly Removing the front fan assembly Replacing the rear fan assembly Installing the front fan assembly Removing the rear fan assembly Replacing the front audio and USB assembly Installing the rear fan assembly Replacing the internal speaker Removing the old internal speaker Installing a new internal speaker Replacing the thermal sensor Pull the entire thermal sensor out of the chassis Replacing the cover presence switch Installing the new thermal sensor Removing the cover presence switch Replacing the WiFi units Removing the WiFi adapter card Disconnecting the Bluetooth cable Opening the PCI card latch Removing the WiFi card module Removing the WiFi adapter card Installing the WiFi units Removing the screws that secure the WiFi card module Installing the WiFi card module Installing the WiFi antenna cables Installing the rear WiFi antenna Installing or removing the rear WiFi antennaRemoving the rear WiFi antenna Installing or removing the front WiFi antenna Installing the front WiFi antenna Connect the front antenna cable to the WiFi card module Removing the front WiFi antenna Replacing the keyboard or mouse Completing the parts replacement Connecting the USB keyboard or mouse Reinstalling the computer cover Obtaining device drivers ThinkCentre User Guide Creating and using recovery media Recovery informationCreating recovery media Performing backup and recovery operations Using recovery mediaPerforming a backup operation Using the Rescue and Recovery workspace Performing a recovery operationClick the Restore your system from a backup icon Using a rescue medium Creating and using a rescue mediumCreating a rescue medium Reinstalling preinstalled applications Reinstalling preinstalled applications and device driversReinstalling preinstalled device drivers Reinstalling device drivers Reinstalling software programsSolving recovery problems Recovery information ThinkCentre User Guide Starting the Setup Utility program Using the Setup Utility programViewing and changing settings Password considerations Power-On PasswordAdministrator Password Hard Disk Password Erasing lost or forgotten passwords clearing Cmos Enabling or disabling a device Enabling ErP compliance mode Selecting a startup deviceSelecting a temporary startup device Selecting or changing the startup device sequence Disabled ICE performance modeICE thermal alert Exiting the Setup Utility program Using system programs Updating flashing the Bios from a discUpdating system programs 103 Recovering from a POST/BIOS update failure Updating flashing the Bios from your operating systemClick Download Drivers & Software Click Use Quick Path Preventing problems Keeping your computer currentGetting the latest device drivers for your computer Updating your operating system Using System Update Basics Cleaning your computer ComputerKeyboard Optical mouse Cleaning a glass-screen surface Good maintenance practicesMoving your computer Basic troubleshooting Troubleshooting and diagnostics109 Troubleshooting procedure Troubleshooting Audio problems No audio in Windows Sound comes from one external speaker only CD problemsNo audio in DOS applications or games CD or DVD does not work DVD problemsBlack screen instead of DVD video DVD movie will not play No audio or intermittent audio while playing DVD moviePlayback is very slow or choppy Invalid disc or no disc found message Intermittent problems Keyboard, mouse, or pointing device problemsAll or some keys on the keyboard do not work Mouse or pointing device does not work Monitor problems Wireless keyboard does not workPointer on the screen does not move smoothly with the mouse Fingerprint reader does not work Wrong characters appear on the screen Image appears to be flickering Networking problems Ethernet problemsImage is discolored Your computer cannot connect to the network Click Start Control Panel Click Hardware and Sound Wake on LAN feature is not workingAdapter stops working for no apparent reason Wireless LAN problem Wireless WAN problemBluetooth problems Sound does not come from the Bluetooth headphone An option that was just installed does not work Option problemsAn option that previously worked does not work now Insufficient free hard disk drive space Performance and lockup problemsExcessive number of fragmented files Printer problems Serial port problemsInsufficient memory Click Defragment Now, then click Continue Software problems Software does not work as expected USB problems Lenovo Solution Center ThinkCentre User Guide Getting information, help, and service Help and service Using the documentation and diagnostic programCalling for service Lenovo Support Web site Using other services Purchasing additional services ThinkCentre User Guide Appendix A. Notices 131 Trademarks Appendix B. Regulatory information Export classification noticeElectronic emissions notices Federal Communications Commission Declaration of Conformity ThinkCentre User Guide Additional regulatory information ThinkCentre User Guide Appendix C. Weee and recycling information Important information for the European Directive 2002/96/ECRecycling information 137 Battery recycling information for Taiwan Recycling information for Brazil Battery recycling information for the European Union ThinkCentre User Guide Appendix D. Ek Bilgiler 141 ThinkCentre User Guide Garanti Hizmetinin Alınabileceği Merkezler Appendix E. Servis istasyonlari143 Antalya Erzİncan Iğdir İzmİr Muğla Şanliurfa ThinkCentre User Guide Index 151 Rescue and Recovery workspace 153 ThinkCentre User Guide