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IBM 6646, 6645, 6644 manual System Board

Models: 6644 6646 6645

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System Board

•Remove the six screws as shown then remove the system board from the chassis.

Repair Information 99

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IBM 6646, 6645, 6644 manual System Board

Contents

6644/6645/6646 Hardware Maintenance Service for Service Level aPage Contents Parts/Test Point Locations Check ProceduresDiagnostic Aids Repair InformationAppendix A. FRU Number List 133 Index 137 Safety Inspection Guide 119Parts Catalog 121 Page Voltage Supply Range Voltage Switch Setting Voltage Supply Switch SettingsTo Connect To Disconnect Safety InformationDo not Para Desconectar Para ConectarCuidado XII Page XIV Page XVI Connexion Déconnexion Xviii Vorsicht Kabel anschließen Kabel lösen AchtungVorsicht Pericolo Per collegare Per scollegare AttenzioneXxiv Page Xxvi Instrucciones de Conexión Desconexión PeligroXxviii Page Laser Compliance Statement HelpCenter TrademarksPreface Introduction Product Overview General InformationIntroduction Memory Product OverviewProcessors Machine Type Processors Machine Type 6645/6646Multimedia External PortsHard Disk Drive CD-ROM DriveKeyboard Power ManagementPower Supply Internal CablingInterface Hardware InterfacesCmos Reset Power-On Password Flash Bios Update Procedure Press Y, then press Enter IBM Desktop System HMM BIOS-contained Model Number and Serial NumberPress Y, then press Enter. When the screen shows When the screen shows Starting the Configuration/Setup Utility Bios Configuration/Setup UtilityWorking with the Setup Menus Keys Function Changing Parameter SettingsLoading Default Settings Save SettingsRestore Settings Viewing System Information, and Product Data Exiting SetupDevices and I/O ports USB Boot deviceVideo Setup IDE Hard Disk Drive IDE Drive SetupPalette Snooping Video InterruptAudio Support Audio SetupIDE CD-ROM Drive Startup Sequence Network SetupStartup Options Error Startup Sequence Power-On Self TestPower-On Logos Automatics Power-on Startup SequenceSystem Security Security Profile by Device Remote AdministrationPower-On password Delete Power-On Password Changing the Power-On PasswordEnter Setup Key in your current password when prompted Asset ID Advanced SetupAdministrator Password Adapter ROM SecurityWake on LAN PCI ControlPlug and Play Control Plug and Play Operating System Processor ControlAcpi Bios IRQ Environment SpecificationsDimension width x depth x height WeightOperating Requirements Check Procedures Introduction Start Important The drives in the system you are Check ProceduresRead the Following Page 007 005009 Index of Symptoms, Messages, Error Codes, or Beeps Page Bios Error Codes Action/FRU Messages Post Error Codes and Messages ListBios ROM Post Error Codes and Messages List Dimm ROM Post Error Codes and Messages List Post Error Codes and Messages List Bios Error Beeps Action/FRU Bios Error Beeps ListDimm Bios Error Beeps List System Board and Memory Error Symptoms ListError Symptoms Action/FRU Processor / Processor Fan Hard Disk Drive Error Symptoms Action/FRUCD-ROM Drive CNN1Error Symptoms List USB Ports Error Symptoms Action/FRU Real-Time ClockVideo and Monitor Some or all keys on Keyboard on Keyboard do not work Other Problems Factory-Installed Storage Devices TroubleshootingSelect Utility from the menu 003005 Page 004 Audio Not Supported by Diagnostics ProgramEnsure that Windows 2000 is properly installed End Perform the following under Windows Check Procedures006 Select Settings, then select Control Panel008 Replace system board IBM Desktop System HMM CD-ROM DriveTry reading the CD with a known good CD-ROM drive Replace CD-ROM drive End Check Procedures Follow the screen instructions to run the Memory test Memory002 KeyboardMouse is functioned normally End MouseTest right left button and check if right left button works Test mouse cursor movement011 Try with a known good mouse010 Replace the mouse EndDisconnect the power cord from the back of the system unit Power SupplyReplace the power supply End Check Procedures Pin power connector IDE power connectorReplace the on/off switch cable assembly Is the Screen READABLE? YES, Read AHEAD. NO, GO to Step MonitorIs the Screen Still not READABLE? Dimm Undetermined ProblemsPage IBM Desktop System HMM Diagnostic Aids Introduction Power-On Self Test Page Using the Diagnostic CD Diagnostic CDUsing Diagnostic Program from Recovery CD Main Menu Selections Submenu Selections Diagnostics Program FeaturesDiagnostic Program Main Menu Selections Repair Information System Board System Backup BatteryRemovals and Replacements Cover Processor and Fansink Page IBM Desktop System HMM Memory Dimm Adapter Card Internal Speaker USB Port CD-ROM Drive Page Hard Disk Drive Page Power Supply Power Button/Indicator LED and Cable System Board System Backup Battery Handling ESD-Sensitive Parts Software Recovery Procedure Introduction 104 Parts/Test Point LocationsIntroduction Jumper/Settings Function System Board Jumpers ConnectorsSystem Board Jumper Settings Connector Function Connect to System Board Connector FunctionsPin Voltage Cable Color Power Supply Connectors and VoltagesPower supply Pin Power Connector Pin-hole side view Power Supply Output Pin Assignment+5Vdc Green Ground Black No connect Red Network Cards In. Hard Disk Drive Jumper Settings J50 Description Maxtor Hard Disk Maxtor Hard Disk Drive Jumper SettingsPage BTC Lite-onCD-ROM Front Panel Introduction Function Connect to CD-ROM Drive Rear Panel Connectors and JumpersCD-ROM Drive Rear Panel Connectors and Jumpers Dimm Configurations Pin Signal Name System Board Connector Pin SignalsMonitor Port Signals IDE Cable Connector SignalsIBM Desktop System HMM General Guidelines 120 Safety Inspection Guide Safety Inspection GuideGeneral Guidelines Parts Catalog Country Language Version AbbreviationsAssembly 1a System Unit- Interior System AssemblyIndex Number 6644 6645 6646 Bezel Blank Assembly 1b System Unit Exterior Assembly 2 Hard Drive Assembly 3 CD-ROM Drive Assembly 4 Power Cord ANZ US/CAN/ANZ Assembly 5 Keyboard and MouseIBM Desktop System HMM FRU Number Asm-Index FRU Number List1a-2 123 FRU Number List IBM Desktop System HMM Index Audio Check Procedure Audio SetupPbsram Page