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Celestron AP8000 • 4-13.Circulation System, Fan Module, Fan, Fans, Replacement, Control Board Release Handle

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IV. Hardware Setup

• 4-13. Circulation System

Fans

Setup Hardware .IV

System Circulation

Control Board Release Handle

Fan Module

The server’s fan module is comprised of five 3-inch (8 cm) fans. The circulation system cools the hard disk drives by bringing fresh air in from the front and forcing the hot air out through the back. If an individual fan fails, the corresponding LED on the front of the server lights.

Fan

Replacement

The fan module can be removed by pulling the handle out. The handle must be in the out position to insert the fan module. The individual fans are secured by two clips and two hooks. To release these clips, use a screw driver to push these clips in and then slide the fan out. If an individual fan fails, remove the fan and send it back to the vendor for replace- ment. If all five fans fail, it may be that the fan control board needs replacing. Remove the control board and send it back to your vendor for replacement.

IMPORTANT

When replacing fans, be sure that the fan rotations are in the same di- rection. Use the manufacturer’s sticker on one side of the fan as a reference as to the correct side. Air should flow from the front of the server to the rear.

34	AP8000 Hardware Reference Guide

Contents

Page AP8000 Hardware Reference Guide ASUSTeK COMPUTER INC. (Asia-Pacific) Marketing Technical Support ASUS COMPUTER INTERNATIONAL (America) ASUS COMPUTER GmbH (Europe) I. Introduction II. Components III. Basic Operation IV. Hardware Setup Page Federal Communications Commission Statement Canadian Department of Communications Statement •1-1.How this Manual is Organized Symbols •1-2.Component Checklist Standard components Optional components •1-3.Features •1-4.Safeguards Operation Safety Tools Required •1-5.Electrical Safety Static-SensitiveDevices (This page was intentionally left blank.) •2-1.Server Front Side •2-2.Server Back Side •2-3.Server Left Side •3-1.Starting the Server • 3-2.LED Indicators • 3-3.BIOS Setup • 4-1.Opening the Chassis Chassis Panels Opening the Left Panel Fan • 4-2.Motherboard Spacers Install the Baseboard Screws Device Cables Cable Connections • 4-3.Central Processing Unit (CPU) Install Retention Mechanisms Mechanism Brace Bars Install Cartridge Lifters Mechanism Cap Frame • 4-4.Chassis Intrusion Switch Chassis Intrusion Connector • 4-5.Expansion Cards • 4-8.Fixed Storage Devices Fixed Storage Device Tray Fixed Device Bay Cover Clips • 4-7.Floppy Disk Drive and CD-ROM Floppy Disk Drive CD-ROMDrive • 4-8. Hot-SwapTrays Removing Hot Swap Trays Hot-SwapTray Usage Hot-SwapTray Front Connections Hot-SwapTray Interface • 4-9. Hot-SwapTray Connector Board Hot-SwapTray Rear Connections • 4-10.SCSI Backplane • 4-11.SCSI ID Setting Using the SCSI Backplane Boards Separately Using Cascaded SCSI Backplane Boards • 4-12.SCSI Backplane Board Placement Installing & Removing SCSI Backplane Boards SCSI Hard Disk Connections • 4-13.Circulation System Fan Module • 4-14.Power Supply Redundant Power Supply Mounting Removing Removing the Entire Power Supply Unit Power Module Rating Power Module Failure Power Supply Information Power Supply Requirement Page i.SCSI Cable Limits ii. Glossary PCI Bus (Peripheral Component Interconnect Local Bus) Peripherals POST (Power On Self Test) PS/2 Port RAID (Redundant Array of Inexpensive Disks)