Megaplex II 4U Chassis Guide MAN-782-CH4 1/28/00
© Copyright 2000 American Megatrends, Inc All rights reserved All rights reserved. American Megatrends, Inc. 6145F Northbelt Parkway Norcross, GA 30071 This publication contains proprietary information which is protected by copyright. No part of this publication can be reproduced, transcribed, stored in a retrieval system, translated into any language or computer language, or transmitted in any form whatsoever without the prior written consent of the publisher, American Megatrends, Inc.
Table of Contents Safety Summary...................................................................... vi 1 General Information..................................... 1 General Description of Chassis..............................................1 Front of Chassis ........................................................................2 Back of Chassis.........................................................................2 Specifications .....................................................................
Preface Limited Warranty The buyer agrees if this product proves to be defective, that American Megatrends is obligated only to repair or replace this product at American Megatrends’ discretion according to the terms and conditions of the warranty registration card that accompanies this product. American Megatrends shall not be liable in tort or contract for any loss or damage, direct, incidental or consequential resulting from the use of this product.
Preface, Continued Disclaimer This manual describes the operation of the American Megatrends Megaplex II 4U chassis.
Safety Summary The following text describes the WARNINGS, CAUTIONS, and NOTES used throughout this document. Each description is followed by an example. You should become familiar with these procedures and always observe standard safety practices. Warning Used to describe potential hazards to personnel. Follow directions carefully to avoid injury. Warning High voltage used in this equipment. To avoid injury or electrical shock, do not remove cover or reach into the unit when the power cord is connected.
1 General Information This manual provides general installation and maintenance information, including drive installation and power supply replacement for the Megaplex II 4U chassis. General Description of Chassis The Megaplex II rack-mount chassis supports up to three 3.50" SCA (Single Connector Attachment) Low Voltage Differential (LVD) 16-bit SCSI drives. SCA drives provide simple installation via pluggable canisters.
Front of Chassis Back of Chassis 2 Megaplex II 4U Chassis Guide
Specifications This chassis is designed to be used in 19” rack configurations. This chassis has been designed to hold the Megaplex II motherboard configured with up to 2 GB of memory. The specifications of the chassis are: Dimensions Height: 7”, Width: 19”, Depth: 28” Weight: Approximately 50 pounds. Controller I/O Seven expansion slots in the rear of the chassis. Power Supplies This chassis supports three 440W power supplies arranged in N+1 redundant configuration.
Specifications, Continued SCSI Drives The 4U chassis supports three hot plug 3.5” 16-bit single-ended SCA LVD SCSI drives. • • • • Cooling These drives are accessible from the front. Each drive bay can take a 1” SCSI LVD drive. The three drives are arranged on one back plane. The back plane supports three drives. The default IDs of these drives are 1, 2, and 3. Access to the back plane is through one Wide SCSI cable. This cable can be connected, for example, to one channel on a RAID controller.
Specifications, Continued LEDs and Switches There are fan failure LEDs for both fans. There is an IDE Activity LED, a power-on LED, a reset switch, and a power-on switch. There are four CPU Activity LEDs. There are three SCSI LEDs. There is an Alarm Mute switch.
Cooling Fans There are three fans in the front of the of the Megaplex II chassis. They are located on the right side of the front grill. There are two fans in the middle of the of the Megaplex II chassis. They slide down into the slot in the middle of the chassis.
Connectors on Back of Chassis The back of the chassis has connectors for the keyboard, mouse, serial ports (1 and 2), parallel port, and VGA port. The Megaplex II has two sets of keyboard and mouse ports. The primary keyboard and mouse ports are located on the front of the chassis, to the left of the floppy disk drive. The keyboard and mouse ports on the back of the Megaplex II are maintenance ports.
Drive Bays on Front of Chassis There are three drive bays on the front of the chassis. The drive bays are located beneath the floppy disk drive on the left side of the chassis.
2 Installation Unpacking and Inspection Unpack the Megaplex II chassis and visually inspect it for damage that might have occurred during shipment. Retain the shipping carton in case reshipment is necessary. Remove the top cover of the chassis and inspect for component damage. If any damage has occurred, notify American Megatrends immediately. See page ii of this manual for details.
Drive Installation Before installing drives make sure that the chassis is powered down. Step 1 Unscrew the thumbscrews on the front cover to access the drive bays. Step 2 Unscrew the thumbscrew at the top of the mounting bracket where the new drive is to be installed. Step 3 Flip the black latch at the bottom of the bracket down.
Drive Installation, Continued Step 4 Slide the bracket out. Step 5 Mount the disk drive on the front side of the mounting bracket.
Drive Installation, Continued Step 6 Line up the holes in the brackets and the screw holes in the back of the drive. The back of the bracket is shown below. Step 7 Insert the screws through the screw holes and the brackets and tighten all four screws. Step 8 After the drive is securely attached to the bracket, slide the bracket into the slot in the drive bay. Step 9 Tighten the thumbscrew and flip the black latch up into a vertical position.
Rack-Mount Installation Before the unit is installed into a rack the following items should be taken into consideration: • • • • The maximum ambient temperature of this unit is 40°C. Internal temperatures of the rack assembly should be considered for safe operation. Do not block power supply vents or otherwise restrict airflow when installing the unit into the rack. Mechanical loading of the rack should be considered so that the rack remains stable and unlikely to tip.
Rack-Mount Installation, Continued Step 3 Position the outer rails in the rack, adjusting the claw brackets and marking the intended position of the mounting holes both on the front and rear of the rack. Tighten the screws on the claw brackets. Step 4 Bolt the front of the slides into place using 10-32 x 1/2" pan head screws. Flat head screws are also provided for racks with countersunk holes. Step 5 Bolt the rear of the slides to the rack side rails using four 10-32 x 3/8" screws.
3 Field Replaceable Units The field replaceable subassemblies within the Megaplex II chassis are described below. The subassemblies in this section are: • the power supply assemblies and • the fan module assemblies. These assemblies can be ordered as spares from AMI. Warning The 4U chassis has three power inlets; each one must be removed to completely disconnect the power supply. The 4U chassis contains a 5x20mm 250V 5A slow fuse in the power supply.
Replacing a Power Supply The power supply module is hot pluggable. You do not have to shut down the system to replace a power supply. Step 1 Unplug the AC power cord connected to the failed power supply module. Step 2 Loosen the thumbscrews that secure the power supply module. Step 3 Using the handle, remove the power supply module from the chassis. Step 4 Replace the failed power supply module with a new power supply module and tighten the thumbscrews. Step 5 Plug in the AC power cord.
Replacing a Fan Module The chassis mounted fan assembly is easily removed and replaced. Should the fan assembly need replacement use the following procedure. The fan assembly is hot pluggable. You do not have to shut down the system to replace a fan. Step 1 Open the top cover. Step 2 Disconnect the wires and remove the fan assembly. Step 3 Unscrew the fan to be replaced. Step 4 Insert the new fan assembly into place and reconnect the wires. Step 5 Install the top cover.
18 Megaplex II 4U Chassis Guide
Index A L AC Input, 3 Alarm Mute switch, 4 Altitude, 5 LEDs and Switches, 5 B outer rails, 14 Back of Chassis, 2 P C pan head screws, 14 Peripheral Drives, 1 Power Supplies, 1, 3 Power Supply Modules, 15 Chassis Alarm Indication, 4 Chassis Intrusion, 4 chassis slides, 14 claw brac, 14 claw brackets, 13 Connectors on Back of Chassis, 7 Controller I/O, 3 Cooling, 1, 4 Cooling Fans, 6 CPU Activity LEDs, 5 D DC Output, 3 Dimensions, 3 Drive Bays on Front of Chassis, 8 Drive Installation, 10 O R rac
U W Unpacking, 9 Web Site, iv Weight, 3 20 Megaplex II 4U Chassis Guide
