Lenovo 3109, 4743 K430 manual Replacing hardware, General information, Pre-disassembly instructions

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Mini PCI-E slot

 

Power connector

eSATA connector

 

Power fan header

 

SSD power connector (Optional)

 

LPC debug connector

 

SATA connectors (4)

 

Serial (COM2) connector

 

Front panel connector

 

SPI debug connector

Mode switch connector

 

Front USB connector (2)

ROM socket

 

Clear CMOS jumper

Front USB header

 

PCI express X 1 adapter slots (3)

Front audio connector

 

PCI express X 16 adapter slot

System fan header

 

 

4.2 Replacing hardware

Attention: Do not remove the computer cover or attempt any repair before reading the “Important safety information” in the Safety and Warranty Guide that was included with your computer or in the Hardware Maintenance Manual (HMM) for the computer. To obtain copies of the Safety and Warranty Guide or HMM, go to the Support Web site at http://consumersupport.lenovo.com.

4.2.1 General information

Pre-disassembly instructions

Before proceeding with the disassembly procedure, make sure that you do the following:

1.Turn off the power to the system and all peripherals.

2.Unplug all power and signal cables from the computer.

3.Place the system on a flat, stable surface.

User Guide 37

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Contents IdeaCentre K4 Series Important Safety Information Page Contents Hardware Replacement Guide Chapter Using the Computer Hardware This chapter contains the following topicsFront view of the chassis Rear view of the chassis User Guide User Guide Connecting your computer Basic connector instructionsLine-in connector on a stereo system or other 7.1 Audio configuration instructions Sound configuration is as follows5.1 Audio configuration instructions Configurations are as followingsDVI-HDMI Wired keyboard selected models only Hot-swappable hard disk selected models onlyUser Guide User Guide Power Control Switch selected models only User Guide Auto Turbo User Guide Chapter Using the Rescue System OneKey Recovery Driver and Application InstallationMethod 2 Manual Installation System SetupMethod 1 Automatic Installation Network SettingsCreate Recovery Disc System BackupSystem Recovery Password ManagementTroubleshooting and Chapter Confirming Setup Solving Problems Troubleshooting Display ProblemsTroubleshooting Audio Problems Troubleshooting Software ProblemsTroubleshooting Problems with Optical Drives and Hard Disks Special considerations for troubleshooting Windows Performing Daily Maintenance Tasks Chapter Hardware Replacement Guide Safety information for replacing CRUs OverviewAdditional information resources Tools requiredHandling static-sensitive devices Locations Identifying internal componentsIdentifying parts on the system board PCI express X 16 adapter slotsMicroprocessor fan header 12V power connector Battery Microprocessor and heat sink Pre-disassembly instructions Replacing hardwareGeneral information Removing the computer cover To remove the computer coverRemoving the front bezel To remove the front bezelReplacing a memory module To replace a memory moduleReplacing a hard disk drive To replace a hard disk driveReplacing an optical drive To replace an optical driveReplacing a graphics card To replace a graphics cardUser Guide User Guide Replacing the TV-Tuner card To replace the TV-Tuner cardUser Guide Replacing the keyboard and mouse To replace the keyboardAppendix DeclarationEnergy Star Statement TrademarksUser Guide User Guide