Power Supply Connectors and Voltages | IBM 6644, 6645, 6646 guide

Power Supply Connectors and Voltages

Refer to the following figures when checking for voltages on power supply cable connectors.

When checking voltages, the power supply fan must be running. To power-on the power supply without using the on/off switch, use a screwdriver or other tool to short the connector CN 3 (pin13-14) (with the switch cable disconnected from the connector on the system board), or use a connection (jumper) to short the black and green wires of the 20-pin connector on

power supply..

20-pin Power Connector

Pin-hole side view		Cable side view
Power Supply Output Pin Assignment

Pin	Voltage	Cable Color

1	+3.3Vdc	Orange

2	+3.3Vdc	Orange

3	Ground	Black

4	+5Vdc	Red

5	Ground	Black

6	+5Vdc	Red

7	Ground	Black

8	Power Good	Gray

9	+5Vdc	Purple

10	+12Vdc	Yellow

11	+3.3Vdc	Orange

12	-12Vdc	Blue

13	Ground	Black

Parts/Test Point Locations 107

Image 139

IBM 6644, 6645, 6646 manual Power Supply Connectors and Voltages, Power supply Pin Power Connector Pin-hole side view

Contents

6644/6645/6646 Hardware Maintenance Service for Service Level aPage Contents Parts/Test Point Locations Check ProceduresDiagnostic Aids Repair Information Parts Catalog 121 Safety Inspection Guide 119Appendix A. FRU Number List 133 Index 137 Page Voltage Supply Range Voltage Switch Setting Voltage Supply Switch Settings To Connect To Disconnect Safety Information Do not Para Desconectar Para Conectar Cuidado XII Page XIV Page XVI Connexion Déconnexion Xviii Vorsicht Kabel anschließen Kabel lösen Achtung Vorsicht Pericolo Per collegare Per scollegare Attenzione Xxiv Page Xxvi Instrucciones de Conexión Desconexión Peligro Xxviii Page Laser Compliance Statement HelpCenter Trademarks Preface Introduction Product Overview General Information Introduction Memory Product OverviewProcessors Machine Type Processors Machine Type 6645/6646 Multimedia External PortsHard Disk Drive CD-ROM Drive Keyboard Power ManagementPower Supply Internal Cabling Interface Hardware Interfaces Cmos Reset Power-On Password Flash Bios Update Procedure Press Y, then press Enter. When the screen shows BIOS-contained Model Number and Serial NumberPress Y, then press Enter IBM Desktop System HMM When the screen shows Working with the Setup Menus Bios Configuration/Setup UtilityStarting the Configuration/Setup Utility Keys Function Changing Parameter Settings Restore Settings Save SettingsLoading Default Settings Viewing System Information, and Product Data Exiting Setup Video Setup USB Boot deviceDevices and I/O ports IDE Hard Disk Drive IDE Drive SetupPalette Snooping Video Interrupt IDE CD-ROM Drive Audio SetupAudio Support Startup Options Network SetupStartup Sequence Error Startup Sequence Power-On Self TestPower-On Logos Automatics Power-on Startup Sequence System Security Power-On password Remote AdministrationSecurity Profile by Device Enter Setup Key in your current password when prompted Changing the Power-On PasswordDelete Power-On Password Asset ID Advanced SetupAdministrator Password Adapter ROM Security Wake on LAN PCI ControlPlug and Play Control Plug and Play Operating System Processor Control Acpi Bios IRQ Environment SpecificationsDimension width x depth x height Weight Operating Requirements Check Procedures Introduction Start Important The drives in the system you are Check Procedures Read the Following Page 007 005 009 Index of Symptoms, Messages, Error Codes, or Beeps Page Bios Error Codes Action/FRU Messages Post Error Codes and Messages List 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 Action/FRU Bios Error Beeps List Dimm Bios Error Beeps List Error Symptoms Action/FRU Processor / Processor Fan Error Symptoms ListSystem Board and Memory Hard Disk Drive Error Symptoms Action/FRU CD-ROM Drive CNN1 Error Symptoms List Video and Monitor Error Symptoms Action/FRU Real-Time ClockUSB Ports Some or all keys on Keyboard on Keyboard do not work Other Problems Factory-Installed Storage Devices Troubleshooting Select Utility from the menu 003 005 Page 004 Audio Not Supported by Diagnostics ProgramEnsure that Windows 2000 is properly installed End Perform the following under Windows Check Procedures 006 Select Settings, then select Control Panel 008 Try reading the CD with a known good CD-ROM drive CD-ROM DriveReplace system board IBM Desktop System HMM Replace CD-ROM drive End Check Procedures Follow the screen instructions to run the Memory test Memory 002 Keyboard Mouse is functioned normally End MouseTest right left button and check if right left button works Test mouse cursor movement 011 Try with a known good mouse010 Replace the mouse End Disconnect the power cord from the back of the system unit Power Supply Replace the on/off switch cable assembly Pin power connector IDE power connectorReplace the power supply End Check Procedures Is the Screen READABLE? YES, Read AHEAD. NO, GO to Step Monitor Is 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 CD Using Diagnostic Program from Recovery CD Main Menu Selections Submenu Selections Diagnostics Program Features Diagnostic Program Main Menu Selections Repair Information System Board System Backup Battery 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 Introduction 104 Parts/Test Point Locations Introduction System Board Jumper Settings System Board Jumpers ConnectorsJumper/Settings Function Connector Function Connect to System Board Connector Functions Pin 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-on CD-ROM Front Panel Introduction CD-ROM Drive Rear Panel Connectors and Jumpers CD-ROM Drive Rear Panel Connectors and JumpersFunction Connect to Dimm Configurations Pin Signal Name System Board Connector Pin SignalsMonitor Port Signals IDE Cable Connector Signals IBM Desktop System HMM General Guidelines 120 Safety Inspection Guide Safety Inspection Guide General Guidelines Parts Catalog Country Language Version Abbreviations Assembly 1a System Unit- Interior System Assembly 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 US/CAN/ANZ Assembly 5 Keyboard and Mouse IBM Desktop System HMM FRU Number Asm-Index FRU Number List 1a-2 123 FRU Number List IBM Desktop System HMM Index Audio Check Procedure Audio Setup Pbsram Page