+5Vdc Green Ground Black No connect Red | IBM 6646, 6645, 6644

Power Supply Output Pin Assignment (Continued)

Pin	Voltage	Cable Color

14	+5Vdc	Green

15	Ground	Black

16	Ground	Black

17	Ground	Black

18	no connect	no connect

19	+5Vdc	Red

20	+5Vdc	Red

108 IBM Desktop System HMM

Image 140

IBM 6646, 6645, 6644 manual +5Vdc Green Ground Black No connect Red

Contents

Hardware Maintenance Service for Service Level a 6644/6645/6646Page Contents Check Procedures Diagnostic AidsRepair Information Parts/Test Point Locations Appendix A. FRU Number List 133 Index 137 Safety Inspection Guide 119Parts Catalog 121 Page Voltage Supply Switch Settings Voltage Supply Range Voltage Switch Setting Safety Information To Connect To Disconnect Do not Para Conectar Para Desconectar Cuidado XII Page XIV Page XVI Connexion Déconnexion Xviii Vorsicht Achtung Kabel anschließen Kabel lösen Vorsicht Pericolo Attenzione Per collegare Per scollegare Xxiv Page Xxvi Peligro Instrucciones de Conexión Desconexión Xxviii Page Laser Compliance Statement Trademarks HelpCenter Preface General Information Introduction Product Overview Introduction Product Overview Processors Machine TypeProcessors Machine Type 6645/6646 Memory External Ports Hard Disk DriveCD-ROM Drive Multimedia Power Management Power SupplyInternal Cabling Keyboard Hardware Interfaces Interface Cmos 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 Changing Parameter Settings Keys Function Loading Default Settings Save SettingsRestore Settings Exiting Setup Viewing System Information, and Product Data Devices and I/O ports USB Boot deviceVideo Setup IDE Drive Setup Palette SnoopingVideo Interrupt IDE Hard Disk Drive Audio Support Audio SetupIDE CD-ROM Drive Startup Sequence Network SetupStartup Options Power-On Self Test Power-On LogosAutomatics Power-on Startup Sequence Error Startup Sequence System 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 Advanced Setup Administrator PasswordAdapter ROM Security Asset ID PCI Control Plug and Play Control Plug and Play Operating SystemProcessor Control Wake on LAN Acpi Bios IRQ Specifications Dimension width x depth x heightWeight Environment Operating Requirements Check Procedures Introduction Important The drives in the system you are Check Procedures Start Read the Following Page 005 007 009 Index of Symptoms, Messages, Error Codes, or Beeps Page Post Error Codes and Messages List Bios Error Codes Action/FRU Messages Bios ROM Post Error Codes and Messages List Dimm ROM Post Error Codes and Messages List Post Error Codes and Messages List Bios Error Beeps List Bios Error Beeps Action/FRU Dimm Bios Error Beeps List System Board and Memory Error Symptoms ListError Symptoms Action/FRU Processor / Processor Fan Error Symptoms Action/FRU Hard Disk Drive CNN1 CD-ROM Drive Error 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 Troubleshooting Factory-Installed Storage Devices 003 Select Utility from the menu 005 Page Audio Not Supported by Diagnostics Program Ensure that Windows 2000 is properly installed EndPerform the following under Windows Check Procedures 004 Select Settings, then select Control Panel 006 008 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 Memory Follow the screen instructions to run the Memory test Keyboard 002 Mouse Test right left button and check if right left button worksTest mouse cursor movement Mouse is functioned normally End Try with a known good mouse 010Replace the mouse End 011 Power Supply Disconnect the power cord from the back of the system unit Replace the power supply End Check Procedures Pin power connector IDE power connectorReplace the on/off switch cable assembly Monitor Is the Screen READABLE? YES, Read AHEAD. NO, GO to Step Is the Screen Still not READABLE? Undetermined Problems DimmPage IBM Desktop System HMM Diagnostic Aids Introduction Power-On Self Test Page Diagnostic CD Using the Diagnostic CD Using Diagnostic Program from Recovery CD Diagnostics Program Features Main Menu Selections Submenu Selections Diagnostic Program Main Menu Selections System Board System Backup Battery Repair Information Removals 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 Parts/Test Point Locations Introduction 104 Introduction Jumper/Settings Function System Board Jumpers ConnectorsSystem Board Jumper Settings System Board Connector Functions Connector Function Connect to Power Supply Connectors and Voltages Power supply Pin Power Connector Pin-hole side viewPower Supply Output Pin Assignment Pin Voltage Cable Color +5Vdc Green Ground Black No connect Red Network Cards In. Hard Disk Drive Jumper Settings Maxtor Hard Disk Maxtor Hard Disk Drive Jumper Settings J50 DescriptionPage Lite-on BTC CD-ROM Front Panel Introduction Function Connect to CD-ROM Drive Rear Panel Connectors and JumpersCD-ROM Drive Rear Panel Connectors and Jumpers Dimm Configurations System Board Connector Pin Signals Monitor Port SignalsIDE Cable Connector Signals Pin Signal Name IBM Desktop System HMM Safety Inspection Guide General Guidelines 120 Safety Inspection Guide General Guidelines Parts Catalog Abbreviations Country Language Version System Assembly Assembly 1a System Unit- Interior Index 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 Assembly 5 Keyboard and Mouse US/CAN/ANZ IBM Desktop System HMM FRU Number List FRU Number Asm-Index 1a-2 123 FRU Number List IBM Desktop System HMM Audio Check Procedure Audio Setup Index Pbsram Page