Tyan Computer B2735 user manual Replacing the cooling fans

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3.8Replacing the cooling fans

6.Remove the four screws securing each fan to the fan bracket to remove them from the fan bracket.

Note: The Transport GX21 (B2735) uses two different types of cooling fans which operate at different speeds. The two fans installed nearest the power supply have a peak speed of 15,000 rpm. The remaining 3 fans have a peak speed of 11,500 rpm. The two fans nearest the power supply should be connected to the speed-controllable pin headers (CPU1_FAN and CPU2_FAN) on the mother board. See 3.8.1 Cooling fan con- nections.

58	Chapter 3: Replacing pre-installed components

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Contents Transport GX21 B2735 Copyright DisclaimerTrademark recognition Federal Communications Commission About this manual ChapterAppendix Safety information Table of Contents Appendix Page About the Transport GX21 B2735 Product models Transport GX21 B2735 modelsFeatures Features1 B2735G21S2 specifications 2 B2735G21S4H specifications Features 3 B2735G21U4H specifications Box contents Component Description UnpackingUnpacking Unpacking Box contents Component Description Unpacking Accessories ICH5R S-ATA RAID driver CDUnpacking Opening the box System front view and front panel B2735G21S2 About the productAbout the product B2735G21S4HAbout the product B2735G21U4H System rear viewAbout the product System internal views B2735G21S2 About the product B2735G21S4H About the product B2735G21U4H About the product Block diagram VRMWork area Before you beginBefore you begin ToolsBefore you begin Precautions Installing motherboard components Installing motherboard componentsRemoving the chassis cover Installing motherboard components Installing CPUs Pin Installing motherboard components Installing memory Installing a PCI card Installing motherboard components Reinsert the PCI card clamp Insert the screw to secure the PCI card to the chassis Installing internal hard drives B2735G21S2 Installing a hard driveInstalling a hard drive Installing an IDE hard driveInstalling a hard drive Installing an internal S-ATA hard drive Installing a hard drive Installing a hard drive Slide the drive bay out Installing an external Scsi hard drive B2735G21U4H Insert a Scsi hard drive in the drive bay Installing a hard drive Rack mounting Rack mountingRack mounting Rack mounting Rack mounting Rack mounting Replacing motherboard components Disconnecting all motherboard cablesIntroduction IntroductionReplacing motherboard components Disconnect front panel LED and USB connectors Replacing motherboard components Replacing the motherboard Replacing the CD-ROM drive Replacing the CD-ROM driveReplacing the slim CD-ROM drive B2735G21S2 Replacing the CD-ROM drive Replacing pre-installed components Replacing the CD-ROM drive Replacing the floppy disk drive Replacing the floppy disk driveReplacing the floppy disk drive B2735G21S2 Replacing pre-installed components Replacing the LED control board Replacing the LED control boardReplacing the storage backplane Replacing the storage backplaneReplacing the storage backplane Replacing the storage backplane ATA backplane features Replacing pre-installed components Replacing the storage backplane Replacing the storage backplane Scsi backplane features U14 MPUReplacing the power supply Replacing the power supplyReplacing the cooling fans Replacing the cooling fansReplacing the cooling fans Replacing the cooling fans Cooling fan connections Replacing the cooling fans Bios setup utility AppendixBios setup utility To select an itemBios menu bar Main To configure basic system setupsMenu bar selections Bios legend bar Bios legend barKey Function Feature Option Description Bios main menuBios main menu MainBios advanced menu Bios advanced menuCPU configuration submenu Bios advanced menu Features Option DescriptionMenu Item Unlocked CPU configuration submenuEnabled 255IDE configuration submenu IDE configuration submenuIDE configuration submenu Feature Option Description ATA Port/Primary IDE/Secondary IDE config- uration submenu ATA Port/Primary IDE/Secondary IDE Configuration submenuHost and Device Floppy configuration submenu Floppy configuration submenuSuper I/O configuration submenu Super I/O configuration submenuFloppy configuration submenu Features Option Description MB 3 1/23F8/IRQ4 Acpi settings submenuSuper I/O configuration submenu Feature Option Description NormalAcpi settings submenu YesAlways Off Advanced Acpi configuration submenu Advanced Acpi configuration submenuAdvanced Acpi configuration Feature Option Description DMI event logging submenu DMI event logging submenuRemote access configuration submenu Remote access configurationUSB configuration menu USB configuration menuUSB configuration submenu Feature Option Description USB portsHiSpeed USB mass storage device configuration sub- menu USB mass storage device configuration20 Sec Onboard devices configuration submenu Onboard devices configuration submenuHardware monitor submenu Hardware monitor submenuHardware monitor submenu Feature Option Description Advanced PCI/PnP menu Advanced PCI/PnP MenuAdvanced PCI/PnP Menu Feature Option Description AvailableBios boot settings menu Bios boot settings menuBoot Settings configuration submenu Boot settings configuration submenuForce Bios Boot device priority submenu Boot device priority submenuIBA FE Slot 0108 Boot device priority submenu Feature Option Description1st Floppy Drive IBA GE Slot 0409Hard disk submenu Hard disk drives submenuXx,xxx-xxxxxxx Removable drives submenu Removable drives submenuXx,xxx-xxxxxxxx Disabled Atapi CD-ROM drives submenuAtapi CD-ROM drives submenu Bios security menu Bios security menuBios security menu Feature Option Description Not InstalledBios chipset settings Bios chipset settingsNorthbridge chipset configuration submenu Northbridge chipset configuration menuSouthbridge chipset configuration submenu Southbridge chipset configuration menuIntel PCI-64 Hub 2 configuration submenu Intel PCI-64 Hub 2 configuration submenuChipset Exit Bios exit menu Bios exit menuBios exit menu Feature Option Description CmosScsi and S-ATA controller cards Controller card location M7902 Ultra 320 Scsi controller card features Key FeaturesM8110 S-ATA RAID controller card features Returning merchandise for service Technical supportHelp resources 108