Lenovo 4220, 4222, 4215, 4219, 4221 Replacing the rear fan assembly, Removing the rear fan assembly

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Replacing the rear fan assembly

Attention

Do not open your computer or attempt any repair before reading and understanding the “Important safety information” in the ThinkStation Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkStation Safety and Warranty Guide, go to: http://www.lenovo.com/support

This section provides instructions on how to replace the rear fan assembly.

To replace the rear fan assembly, do the following:

1.Remove the computer cover. See “Removing the computer cover” on page 14.

2.Locate the rear fan assembly. See “Locating components” on page 10.

3.Disconnect the rear fan assembly cable from the system fan connector on the system board. See “Locating parts on the system board” on page 11.

4.The rear fan assembly is attached to the chassis by four rubber mounts. Remove the rear fan assembly by breaking or cutting the four rubber mounts and gently pulling the rear fan assembly out of the chassis.

Figure 30. Removing the rear fan assembly

5.Install the new rear fan assembly by aligning the new rubber mounts with the corresponding holes in the chassis and push the rubber mounts through the holes.

Note: The new rear fan assembly you received will have four new rubber mounts attached.

Chapter 2. Installing or replacing hardware 37

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Contents ThinkStation User Guide Page ThinkStation User Guide First Edition February Copyright Lenovo Contents Index Important safety information Vi User Guide Product overview FeaturesSystem management features Security features Dimensions SpecificationsSoftware provided by Lenovo Software overviewAntivirus software Adobe ReaderFront connector locations Locations Locating connectors on the front of your computerRear connector locations Locating connectors on the rear of your computerConnector Description Component locations Locating componentsLocating internal drives Locating parts on the system boardDrive bay locations Installing or replacing hardware Installing or replacing hardwareHandling static-sensitive devices Removing the computer cover Installing external optionsRemoving the computer cover Removing and reinstalling the front bezelRemoving the front bezel Installing or replacing a PCI cardOpening the PCI card latch Removing a PCI card What to do next Installing or replacing a memory moduleOpening the retaining clips Installing a memory module Installing or replacing the optical driveRemoving the optical drive Installing the optical drive Removing the screws for the power supply assembly Replacing the power supply assemblyReplacing the heat sink and fan assembly Removing the heat sink and fan assembly Removing the primary hard disk drive Replacing the primary hard disk driveInstalling the hard disk drive into the bracket Replacing the secondary hard disk drive Installing the primary hard disk driveRemoving the secondary hard disk drive Installing the hard disk drive into the bracket Replacing the card reader Installing the secondary hard disk driveRemoving the card reader Replacing the front fan assembly Removing the front fan assembly Installing the front fan assembly Removing the rear fan assembly Replacing the rear fan assemblyReplacing the keyboard Installing the rear fan assemblyReplacing the mouse Keyboard connectorsMouse connectors Completing the parts replacementReinstalling the computer cover Installing security featuresIntegrated cable lock Installing an integrated cable lockPassword protection Erasing lost or forgotten passwords clearing CmosPadlock User Guide Recovery information Creating and using recovery mediaCreating recovery media Using recovery media Performing backup and recovery operations Performing a backup operationPerforming a recovery operation Using the Rescue and Recovery workspace Creating rescue media Creating and using rescue mediaCreating and using a recovery repair diskette Using rescue mediaCreating a recovery repair diskette Using a recovery repair disketteInstalling or reinstalling device drivers Solving recovery problems Setting a rescue device in the startup sequenceStarting the Setup Utility program Using the Setup Utility programViewing and changing settings Using passwordsPower-On Password Password considerationsAdministrator Password Hard Disk PasswordEnabling or disabling a device Selecting a startup deviceSelecting a temporary startup device Advanced settings Exiting from the Setup Utility programSelecting or changing the startup device sequence Configuring RAID Creating RAID volumesRAID Level Deleting RAID volumes Using system programs Updating flashing Bios from a discUpdating system programs Recovering from a POST/BIOS update failure Updating flashing Bios from your operating systemUpdating system programs User Guide Basic troubleshooting Troubleshooting and diagnosticsDiagnostic programs Lenovo ThinkVantage ToolboxLenovo System Toolbox PC-Doctor for DOS PC-Doctor for Rescue and RecoveryOptical mouse Cleaning the mouseNon-optical mouse User Guide Information resources Getting information, help, and serviceOnline Books folder Lenovo ThinkVantage ToolsSafety and Warranty Help and serviceUsing the documentation and diagnostic programs Using other services Calling for servicePurchasing additional services Appendix. Notices European conformance CE mark Trademarks Television output noticeCRU IndexPage Page User Guide Page Part Number 71Y8009
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