Tyan Computer B2881 manual Replacing Motherboard Components, Disconnecting All Motherboard Cables

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3.4Replacing Motherboard Components

Follow these instructions to replace motherboard compo- nents, including the motherboard.

3.4.1Disconnecting All Motherboard Cables

Before replacing the motherboard or certain components, remove cables connected to the motherboard. Follow these instructions to remove all motherboard cabling.

1.Disconnect ATX power cables

Main Power		EPS 12V Power

2.Disconnect CD-ROM drive cable and SATA (or SCSI) hard drive cables.

3.Disconnect the front panel, USB, and two LAN connec- tors. Refer to the mainboard layout for the locations.

Chapter 3: Replacing Pre-Installed Components

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Contents Transport GT24 B2881 Service Engineer’s Manual Page Preface Federal Communications Commission FCC Conventions Safety Information Table of Contents Technical Support About the Transport GT24 B2881 OverviewSupport Backplane Product ModelsB2881G24S4H B2881G24U4H B2881G24S4-LC Model HDD Bays Hot-SwapFeatures Power Supply Environment TemperatureRegulatory FDD Kit UnpackingRail Kit CD-ROM Accessory Kit for B2881G24S4-LC only About the Product System Front View B2881G24S4-LCB2881G24IU4H/B2881G24S4H LED Definition Front Panel System Rear ViewRear I/O LED FAN1 System Internal View B2881G24S4-LCB2881G24S4H 109B2881G24U4H 109 Motherboard Layout Jumpers & Connectors Function Motherboard Block Diagram Before You Begin Work AreaTools Precautions Installing the Server in a Rack Rack MountingRack mounting kit Installing Outer Rails to the Rack Installing the Inner Rails to ChassisLocate the front and rear brackets Remember to add washer Front Side Rear Side Rackmounting the Server Setting Up Removing the Chassis Cover Installing Motherboard ComponentsInstalling the CPU, Heatsink and Air Duct Setting Up Installing the Memory Installing a PCI-X Card Setting Up Installing the Hard Drive for B2881G24S4-LC Setting Up Installing the Hard Drive for B2881G24S4H/U4H Setting Up Installing the Slim FDD Option Connect the other side to the connector on motherboard Installing the CD-ROM or DVD-ROM for B2881G24S4-LC only Power Cable Data Cable Introduction Replacing Pre-Installed ComponentsPrecautions Following flowchart outlines the disassembly procedure Disassembly FlowchartRemoving the Cover Disconnecting All Motherboard Cables Main Power EPS 12V PowerReplacing Motherboard Components Disconnect all fan power cables Removing the Motherboard Replacing the LED Control Board Replacing Pre-Installed Components Replacing the M1012 Adapter Board J3 LAN/ID LED 1 M1012 Adapter Board Features2 M1012 Adapter Board Connector Pin Definition FAN Signal Related Connector Pin Definition GND FAN1TACH FAN2TACH FAN3TACH KEY PIN FAN312VPWM FAN3TACH GND FAN4TACH FAN412VPWM FAN912VPWM FAN9TACH GND FAN10TACH System Fan Layout System Fan Monitoring Signal System Fan Speed Control SignalReplacing the Sata or Scsi Backplane Replacing Pre-Installed Components ATA Backplane M1204 Features Replacing Pre-Installed Components M1204 HDD Access LED Connector Pin Definition Scsi Backplane M1205 Features Replacing Pre-Installed Components Tion M1205 HDD Start-Mode & ID Selection SwitchCase Motor Spin FuncLeft to right in front view ID SequenceReplacing the Power Supply S2881 Advanced/Hardware Health Information B2881 Advanced/Hardware Health InformationTable of Differences S2881 B2881 Appendix II Cable Connection Tables Power Supply Cable FDD Related Cable Option Help Resources Technical SupportReturning Merchandise for Service