Tyan Computer B2881 manual Replacing the LED Control Board

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3.5Replacing the LED Control Board

Follow these instructions to remove the LED control board.

1.Remove the 2 screws securing the LED control board to the chassis.

2.Pull the LED control board free from the chassis as shown below.

3. Unplug the front panel ribbon cable from the connector.

46	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 Overview About the Transport GT24 B2881Model HDD Bays Hot-Swap Product ModelsB2881G24S4H B2881G24U4H B2881G24S4-LC Support BackplaneFeatures Power Supply Environment TemperatureRegulatory Unpacking FDD KitRail Kit CD-ROM Accessory Kit for B2881G24S4-LC only About the Product System Front View B2881G24S4-LCB2881G24IU4H/B2881G24S4H System Rear View LED Definition Front PanelRear I/O LED System Internal View B2881G24S4-LC FAN1109 B2881G24S4HB2881G24U4H 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 the Inner Rails to Chassis Installing Outer Rails to the RackLocate the front and rear brackets Remember to add washer Front Side Rear Side Rackmounting the Server Setting Up Installing Motherboard Components Removing the Chassis CoverInstalling 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 Replacing Pre-Installed Components IntroductionPrecautions Disassembly Flowchart Following flowchart outlines the disassembly procedureRemoving 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 1 M1012 Adapter Board Features J3 LAN/ID LED2 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 Speed Control Signal System Fan Monitoring 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 Motor Spin Func M1205 HDD Start-Mode & ID Selection SwitchCase TionID Sequence Left to right in front viewReplacing the Power Supply B2881 Advanced/Hardware Health Information S2881 Advanced/Hardware Health InformationTable of Differences S2881 B2881 Appendix II Cable Connection Tables Power Supply Cable FDD Related Cable Option Technical Support Help ResourcesReturning Merchandise for Service