Arkon AIMB-258 user manual Uninstalling the CPU Heatsink and Fan

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1.12.3Uninstalling the CPU Heatsink and Fan

1.Disconnect the CPU fan cable

from the connector on the motherboard.

2.Rotate each screw counter- clock- wise.

3.Carefully remove the heatsink and fan assembly from the mother- board.

Note! Refer to the documentation in the boxed or stand-alone CPU fan pack- age for detailed information on CPU fan installation.

AIMB-258 User Manual

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Contents AIMB-258 Safety Information Electrical safetyCertifications Technical Support Packing ListContents Bios Operation Appendix BTable B.3 DVI Connector VGA1B Viii Chapter Placement Direction Before You ProceedMotherboard Overview Product Introduction Screw HolesMotherboard Layout Motherboard LayoutSpecifications PCIOperating System support list Operation System AIMB-258Board Diagram ChapterBracket View Accessories Ordering InformationRiser Card Layout Content List Jumper Setting ListJSETCOM2 COM2 RS232/422/485 Mode Selection JSETCOM1 COM1/+5 V/+12 V SelectionJ1LCD Power 3.3 V/5.5 V Selection PSON1 ATX, AT Mode SelectionCMOS1 Clear Cmos JWDT1 Watchdog Timer Output Option Central Processing Unit CPU for AIMB-258Jobs HW monitor Installing the CPU Product Introduction Installing the CPU Heatsink and Fan Motherboard HoleProduct Introduction Uninstalling the CPU Heatsink and Fan System Memory Dimm Sockets LocationSystem Memory Memory Support List Sodimm DDR3Connectors Rear Panel Connectors10 Rear Panel Connectors 11 LEDsCPU Fan Connector CPUFAN1 System Fan Connector SYSFAN1, SYSFAN2 Page Front Panel Connector JFP1/JFP2/JFP3 ATX soft power switch JFP1 / PwrswReset JFP1 / Reset HDD LED JFP2 / HddledPower LED and keyboard lock connector JFP3 USB 2.0 Connector USB56, USB7812 ATX power supply LED status No support for AT power ATX Power Connector ATX1 Important notes on the Motherboard Power RequirementsLCD Inverter Connector VP1 Lvds Connector LVDS1 SATA1 SATA2 PCIe x 16 Slot Pcie X SPI Flash ConnectorSPICN1 Product Introduction CF connector Bios Operation Bios Introduction Bios SetupMain Menu Standard Cmos Features Advanced Bios Features Advanced Chipset Features Integrated Peripherals Onboard Device Super IO DeviceUSE Device Setting Power Management Setup Power Management User Defined Suspend Mode DisabledHDD Power Down Mode Disabled PowerOn by LAN Enabled8 PnP/PCI Configurations PC Health StatusLoad Setup Defaults Set Password CPU Warning TemperatureCurrent System Temperature Current CPU TemperatureTo Establish Password To Change PasswordTo Disable Password Chipset Software Install Utility Before you Begin IntroductionWindows Vista/XP Driver Setup Page VGA Setup Introduction LAN Configuration Features InstallationWindows Vista/XP Driver Setup Realtek RTL8111C LAN Configuration Page Appendix a Programming the Watchdog Timer Watchdog timer overviewProgramming the Watchdog Timer Appendix a Programming the Watchdog Timer Table A.1 Watchdog Timer Registers Example Program Page Appendix a Programming the Watchdog Timer Page Appendix B USB Connector USB56,USB78 VGA Connector VGA1ADVI Connector VGA1B RS-232 Serial Port COM1~COM2 Table B.4 RS-232 Serial Port COM1~COM2RS-232 Serial Port COM3 ~ COM6 Table B.5 RS-232 Serial Port COM23PS/2 Keyboard/ Mouse Connector KBMS1 CPU Fan Power Connector CPUFAN1Table B.6 PS/2 Keyboard/ Mouse Connector KBMS1 Table B.7 CPU Fan Power Connector CPUFAN1Power LED & Keyboard Lock Connector JFP3 Table B.8 Power LED and Keylock Connector JFP3Table B.9 External Speaker Connector JFP2/SPEAKER Audio Front Panel Connector FPAUD1 Table B.10 Audio Front Panel Connector JFP1/ ResetTable B.11 Audio front panel connector FPAUD1 Gpio Pin Header GPIO1 Table B.12 Gpio Pin Header GPIO1Lvds Connector LVDS1 Table B.13 Lvds Connector LVDS1Lvds Power Jumper J1 Table B.14 Lvds Power Jumper J1Lvds Invert VP1 Table B.15 Lvds Invert VP1System I/O Ports DMA Channel AssignmentsTable B.16 System I/O Ports Table B.17 DMA Channel AssignmentsInterrupt Assignments 19 1st MB Memory MapTable B.18 Interrupt Assignments Table B.19 1st MB Memory MapAppendix B Pin Assignments