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Lenovo TC A55-9636, 9638, 9643, 9644, 9645, 9640 manual Identifying parts on the system board

Models: TC A55-9636 9640 9645 9644 9643 9638

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Identifying parts on the system board

Identifying parts on the system board

The system board (sometimes called the planar or motherboard) is the main circuit board in your computer. It provides basic computer functions and supports a variety of devices that are factory-installed or that you can install later.

The following illustration shows the locations of parts on the system board.

1	Memory connector 1	10	Internal speaker connector
2	Memory connector 2	11	Diskette drive connector
3	SATA IDE connectors (2)	12	Front panel connector
4	BIOS WP	13	Power supply connector
5	Cover presence switch (Tamper	14	12v power connector
	SW) connector
6	PCI riser connector	15	Microprocessor
7	Battery	16	Fan connector 2
8	Clear CMOS/Recovery jumper	17	Fan connector 1
9	Temperature sensor connector

Chapter 3. Installing options 23

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Lenovo TC A55-9636, 9638, 9643, 9644, 9645, 9640 manual Identifying parts on the system board

Contents

Types 9641, 9642, 9643, 9644, User Guide Types 9300, 9301, 9636, 9638,Page Types 9641, 9642, 9643, 9644, User Guide Types 9300, 9301, 9636, 9638,Fourth Edition April Copyright Lenovo 2005, Contents Appendix A. Manual modem Conditions that require immediate action Important safety informationService and upgrades General safety guidelinesStatic electricity prevention viiiUser Guide Power cords and power adaptersVoltage-selectionswitch Plugs and outlets Extension cords and related devicesExternal devices BatteriesxUser Guide Heat and product ventilationOperating environment Electrical current safety informationDo not Lithium battery noticeModem safety information Laser compliance statement Power supply statementCleaning and maintenance Data safetyAdditional safety information xivUser GuideIntroduction xviUser Guide Glare and lighting Chapter 1. Arranging your workspaceComfort Electrical outlets and cable lengths Air circulationConnecting your computer Chapter 2. Setting up your computer4User Guide LINE Chapter 2. Setting up your computerPHONE LINE b.Connect the ac adapter cable to the speaker b. Connect the speakers to the computer Finishing the software installation Turning on powerCompleting important tasks 8User GuideUpdating your operating system Installing other operating systemsUpdating your antivirus software Shutting down the computer10User Guide Features Chapter 3. Installing optionsInput/output features System management featuresMemory Internal drivesSecurity features PowerPreinstalled software Operating systems, preinstalled varies by modelAvailable options Dimensions SpecificationsWeight EnvironmentHandling static-sensitivedevices Supported operating positionsTools required Installing external options Locating connectors on the rear of your computer Description Obtaining device driversConnector Opening the cover Locating components Accessing system board components and drives Identifying parts on the system board Installing memory What to do next Installing PCI adaptersInstalling internal drives Drive specifications Installing a drive in bay Connecting a serial ATA drive 30User Guide Installing a diskette drive in bay4.Lower the drive bay assembly 32User Guide Security featuresIntegrated cable lock Password protectionChanging the battery To change the battery Closing the cover and connecting the cables 36User Guide Creating and using the Product Recovery disc Chapter 4. Recovering softwarePerforming backup and recovery operations Using the Rescue and Recovery workspace Notes Creating and using rescue mediaTo use rescue media, do one of the following Creating and using a Recovery Repair disketteTo create rescue media, do the following Recovering or installing device drivers Solving recovery problems Setting a rescue device in the startup sequence44User Guide Starting the Setup Utility program Chapter 5. Using the Setup UtilityViewing and changing settings Using passwordsAdministrator Password User PasswordSetting, changing, and deleting a password Using Security Profile by DeviceSelecting a temporary startup device Selecting a startup deviceChanging the startup device sequence 3.Select Security Profile by Device48User Guide Advanced settingsExiting from the Setup Utility program Chapter 6. Updating system programs Using system programsUpdating flashing BIOS from a diskette or CD-ROM b.Click Continue c.Click Downloads and drivers Updating flashing BIOS from your operating systemRecovering from a POST/BIOS update failure Chapter 6. Updating system programs 52User Guide Basic troubleshooting Chapter 7. Troubleshooting and diagnosticsDiagnostic programs PC-Doctorfor DOS Creating a diagnostic CD imagePC-Doctorfor Windows Running diagnostics from the CD or diskettes Creating diagnostic diskettesOptical mouse Cleaning the mousePC-Doctorfor Windows PE Non-opticalmouse 11.Reconnect the mouse cable to the computer 60User Guide Information resources Chapter 8. Getting information, help, and serviceOnline Books folder ThinkVantage Productivity CenterHelp and service Access HelpSafety and Warranty Calling for service Using the documentation and diagnostic programsPurchasing additional services Using other servicesBasic AT commands Appendix A. Manual modem commandsCommand Extended AT commands MNP/V.42/V.42bis/V.44 commands Fax Class 2 commands Fax Class 1 commandsVoice commands PTT Art. Bakom 93.0291.Z.N Attention Switzerland UserTelekom PTT SCR-BE Taximpulssperrfilter-12kHz 72User Guide Lenovo United States, Inc Appendix B. Notices500 Park Offices Drive, Hwy. Research Triangle Park, NC U.S.ATrademarks Television output noticeIndex A Page Page 1P P/N: 42Y4610 Part Number: 42Y4610 Printed in USA