Pull the entire thermal sensor out of the chassis | Lenovo 2756D7U

6.From inside the chassis, pivot the upper retaining clip 1 that secures the plastic holder of the thermal sensor downward and then push the clip outward to release the clip. Then disengage the plastic holder holding the thermal sensor from the chassis.

Figure 61. Removing the thermal sensor

7. Pull the entire thermal sensor out of the chassis.

72ThinkCentre User Guide

Image 84

Lenovo 2756D7U, 2697 manual Pull the entire thermal sensor out of the chassis

Contents

ThinkCentre User Guide Third Edition May Copyright Lenovo Contents Recovery information Appendix A. Notices 131 Iv ThinkCentre User Guide Important safety information Service and upgradesStatic electricity prevention Power cords and power adapters Extension cords and related devices Plugs and outlets External devicesHeat and product ventilation Modem safety information Operating environment Power supply statement Cleaning and maintenanceLaser 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 Specifications Software overviewSoftware 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 Handling and storing CD and DVD media Playing a CD or DVDRecording a CD or DVD Using your computer ThinkCentre User Guide Accessibility and comfort You and your computerArranging your workspace Comfort Glare and lighting Air circulationElectrical outlets and cable lengths Voltage-selection switch Registering your computerMoving 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 Using passwords Bios 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 Removing and reinstalling the front bezel Installing or replacing a PCI cardWhat 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 or removing the rear WiFi antenna Installing 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 Recovery information Creating and using recovery mediaCreating recovery media Using recovery media Performing backup and recovery operationsPerforming a backup operation Performing a recovery operation Using the Rescue and Recovery workspaceClick the Restore your system from a backup icon Creating and using a rescue medium Using a rescue mediumCreating a rescue medium Reinstalling preinstalled applications and device drivers Reinstalling preinstalled applicationsReinstalling preinstalled device drivers Reinstalling software programs Reinstalling device driversSolving recovery problems Recovery information ThinkCentre User Guide Using the Setup Utility program Starting 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 ICE performance mode DisabledICE thermal alert Exiting the Setup Utility program Using system programs Updating flashing the Bios from a discUpdating system programs 103 Updating flashing the Bios from your operating system Recovering from a POST/BIOS update failureClick 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 Good maintenance practices Cleaning a glass-screen surfaceMoving your computer Troubleshooting and diagnostics Basic troubleshooting109 Troubleshooting procedure Troubleshooting Audio problems No audio in Windows CD problems Sound comes from one external speaker onlyNo audio in DOS applications or games DVD problems CD or DVD does not workBlack 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 Wake on LAN feature is not working Click Start Control Panel Click Hardware and SoundAdapter stops working for no apparent reason Wireless LAN problem Wireless WAN problemBluetooth problems Sound does not come from the Bluetooth headphone Option problems An option that was just installed does not workAn option that previously worked does not work now Performance and lockup problems Insufficient free hard disk drive spaceExcessive 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 Appendix E. Servis istasyonlari Garanti Hizmetinin Alınabileceği Merkezler143 Antalya Erzİncan Iğdir İzmİr Muğla Şanliurfa ThinkCentre User Guide Index 151 Rescue and Recovery workspace 153 ThinkCentre User Guide